Frontend Developer at Tossplace | Seoul

Join Our Team! At Toss Bank, we are dedicated to developing a wide range of frontend products, while also designing and building internal banking systems for operational efficiency. Our squads, which consist of 4 to 15 members, operate autonomously like small startups, focused on creating exceptional services and products. The Toss Bank Frontend Chapter collaborates seamlessly, conducting weekly meetings to address technical debt and sharing insights on new technologies and development practices through 'Lightning Talks'. Your Responsibilities Include: Developing products aimed at revolutionizing the banking system in South Korea and enhancing team productivity. Identifying and automating repetitive, manual operational tasks such as ID verification, seizure and collection processes, certificate issuance, and financial transaction information provision to maximize efficiency. Participating in the design process by understanding business requirements and crafting user interfaces. Optimizing admin UX/UI by platforming internal operational tools, thereby enhancing development productivity. We Are Looking For: A candidate with a strong understanding and experience in React. Proficiency in TypeScript to develop reliable and testable applications. A passion for understanding user perspectives and building systems that enhance operational efficiency beyond basic feature implementation. Proactive problem-solving skills and the ability to articulate ideas effectively. Experience in building admin products is a plus. Experience in developing dashboards and reporting functionalities for service operations is a plus. A background in enhancing operational efficiency and automation beyond basic CRUD operations is a plus. Technologies We Use: Core: React, TypeScript, Next.js State Management: React-Query, Jotai, Zustand Styling: Emotion, Panda CSS Package Manager: Yarn Berry, Bun Build: Webpack, Rollup, ESBuild, SWC, Babel CI/CD: GitHub Actions, GoCD Your Journey to Joining Toss Bank: Application submission > Pre-assignment > Job Interview > Cultural Fit Interview > Reference Check > Compensation Discussion > Final Acceptance and Onboarding Important Notes: This position is a contract role with a duration of 1 year. If any false information is found in the resume or if disciplinary issues are confirmed in the work history, the employment offer may be revoked.

About the Team You Will Join The Frontend Developer position at Toss is part of both a silo and the frontend chapter in a matrix structure. At Toss, products and services are developed within silo teams consisting of 6-8 professionals, including Product Owners, Designers, Server Developers, Frontend Developers, and Data Analysts, allowing for a startup-like autonomy. The frontend chapter collaborates closely like a single team! We conduct weekly chapter meetings to share new technology topics and development insights through 'Tech Talks', as well as engage in library development and code reviews for UI components and asynchronous processes. This year, the frontend chapter aims to scale its resources to ensure Toss's increasingly demanding business operations run smoothly. Your Responsibilities You will play a key role in identifying the market potential of Toss products and nurturing them into mature services. Toss implements various web pages within its app, collaborating with partners to continuously update services much like a native app. We are enhancing our frontend development environment to ensure web services can be built and deployed in just one minute, maximizing user experience. The Ideal Candidate Proficiency in SPA frameworks like React, Vue, or Angular is preferred. We seek individuals who can proactively identify problems and propose solutions rather than merely executing assigned tasks. Experience with static type analysis in JavaScript using TypeScript or Flow is a plus. Resume Tips Instead of simply listing experiences, please describe your impact and learning points from your past roles. We value candidates who attempt to solve problems independently as we rapidly iterate on product completeness based on customer feedback. If you have experience with server-side rendering (SSR) or web app development within mobile apps, please highlight this. Detail any experience you have in gradually migrating existing source code to a new codebase. For military personnel, please include detailed information regarding your service status in your resume, as industrial personnel can transition and research personnel can change roles. Technologies Used at Toss Core: React, TypeScript, Next.js State Management: React-Query, Recoil Styling: Emotion Package Managers: Yarn Berry, PNPM Build Tools: Webpack, ESBuild, SWC, Babel

Introducing Toss Income Toss Income is a newly launched subsidiary of the Toss community, focused on providing services related to 'income', the starting point of financial management. Our primary emphasis is on the taxation domain. Although tax services may not be daily necessities, they are an integral part of financial life that everyone encounters. We strive to alleviate the difficulties individuals face in managing their taxes. Just as Toss has revolutionized the financial landscape with innovative services, Toss Income aims to deliver new value through offerings such as 'Finding Hidden Refunds'. As one of the earliest members of Toss Income, you will have the opportunity to help shape the team and contribute to our growth. Your Responsibilities You will play a key role in identifying market opportunities for Toss Income's products and driving them towards maturity. Our applications feature a variety of web pages that are continuously updated in collaboration with partner companies, ensuring a native app-like experience. We are committed to enhancing the frontend development environment, enabling the build and deployment of frontend web services within just one minute to ensure the best user experience. We Are Looking For Proficiency in SPA frameworks like React, Vue, or Angular is highly desirable. We seek individuals who can proactively identify problems, analyze them, and propose effective solutions, rather than simply executing assigned tasks. Experience with static type checking in JavaScript using TypeScript or Flow is a plus. Resume Writing Tips Rather than listing your experiences, describe the impact and learning points from your past roles. As we prioritize customer feedback in improving product quality, we look for candidates who demonstrate initiative in problem-solving. If you have experience in server-side rendering (SSR) or web app development within mobile apps, please include that in your resume. Highlight any experience transitioning existing code to a new codebase. For military service personnel, please detail your service status in your resume, as we accommodate transitions for industrial function personnel. Technologies We Use Core: React, TypeScript, Next.js State Management: React-Query, Recoil Styling: Emotion Package Managers: Yarn Berry, PNPM Build Tools: Webpack, ESBuild, SWC, Babel CI/CD: GitHub Actions

# About the Team You Will Join- As a Frontend Developer at Toss Bank, you will be part of a purpose-driven team/squad and simultaneously belong to the Frontend Chapter, a functional organization. Frontend Developer in the Product Organization- At Toss Bank, product and service development occurs within team/squad units, where various roles such as PO/PMs, designers, frontend/server developers, and data analysts collaborate with high levels of autonomy and accountability, akin to a startup. Frontend Developer Lead in the Chapter- With the growth of the chapter, the F-Lead (Frontend Lead) role has emerged to effectively manage smaller groups. Each group comprises 4-5 Frontend Developers handling similar products, with the F-Lead guiding these teams.- By fostering a deep understanding and empathy for the product, you will lead high-quality engineering discussions to set technical goals and explore directions.- Interested in learning more about the Toss Bank Frontend Chapter? [→ *We are building a bank on the web*](https://toss.im/career/article/tossbank-frontend-interview)- Curious about the growth opportunities post-joining? [→ *A week in the life of a Toss Bank Frontend Developer*](https://toss.im/career/article/tossbank-frontend-oneweek) # Role of the Frontend Developer LeadThe F-Lead plays a pivotal role in providing engineering leadership within the Frontend Chapter. This position involves leading a group, managing development discussions and issues, and outlining technical directions. It extends beyond simple feature development to encompass continuous service improvements.The ideal candidate will possess practical technical skills and be capable of engaging in various activities that promote team growth.- Execute frontend operations promptly based on technical excellence, achieving product growth through appropriate direction.- Manage technical debt and establish a clear vision, leading the group’s engineering meetings to drive discussions.- Foster connections among fellow developers, inspiring growth, career development, and motivation for tangible changes.- Monitor project status, provide input for resource allocation, and enhance the development environment and processes.- As a Frontend Developer in a team/squad organization, you will collaborate with other roles such as planning, design, and data analysis to create and develop products aimed at user growth. # We Are Looking For- A leader who aspires to support and empower colleagues to work more effectively rather than merely managing them.- Someone who proactively identifies problems and collaborates with teammates to find solutions, beyond just completing assigned tasks.- A person with the ambition and goals to create a significant business impact through development.- An individual who prioritizes user experience and aims to maximize service accessibility and performance. # Technologies Used at Toss Bank- Core: React, TypeScript, Next.js- State Management: React-Query, Jotai, Zustand- Styling: Emotion, Panda CSS- Package Managers: Yarn Berry, Bun- Build Tools: Webpack, Rollup, ESBuild, SWC, Babel- CI/CD: GitHub Actions, GoCD # Joining Toss Bank Journey- Application Submission > Preliminary Task > Job Interview > Cultural Fit Interview > Reference Check > Compensation Negotiation > Final Acceptance and Onboarding # Important Notice- If false information is found in your resume or documents, or if disciplinary actions during your employment history are confirmed, recruitment may be canceled.- According to Toss Bank's employment regulations, candidates with disqualifying factors may also have their recruitment canceled.- Individuals with disabilities and those eligible for national veterans' benefits will be favored during the application process.

#LI-DNI Join the Frontend Chapter at Toss Securities, We are developing modern web solutions for mobile products running on Android and iOS app web views, desktop products for PC browsers, and back-office systems for operations. Our mission is to simplify complex investment products into an elegant experience that is accessible to everyone. We leverage cutting-edge engineering techniques to seamlessly present real-time data and facilitate transactions. We use the following technologies: React, Next.js, Typescript: Building efficient UI with component-based architecture and minimizing bugs through static type checking. React-Query, Recoil, Jotai: Utilizing state management for server and client as per requirement. Emotion, Vanilla-extract: Implementing emotion for mobile product styling and vanilla-extract for desktop product styling. TDS (Toss Design System): Enhancing development productivity through our robust design system and contributing from bug reporting to component creation. WebSockets, SSE: Efficiently managing real-time data processing and optimizing server requests. YarnBerry, PNPM: Adapting package managers to fit our needs. Webpack, SWC, Babel: Accelerating development productivity with rapid build and deployment speeds. Github, Github Action: Managing source code via Github and conducting code reviews with automated assignment of at least two reviewers, supported by various Github Bots for static analysis and testing reports. What you can expect in the Toss Securities FE Chapter: If you're a developer passionate about investing, you'll enhance both your development skills and investment knowledge. Experience diverse data visualizations such as charts, graphs, and tables, and learn how to optimize the performance of visualized real-time data. Handle real-time traffic of up to 1400 TPS through sockets. Gain experience in creating a design system specifically for securities products. Participate in bi-weekly Engineering Days to share knowledge and discuss technology topics or development tips in Tech Talks. Even outside of Engineering Days, we actively share productivity-enhancing insights, newfound knowledge, and lessons learned from mistakes. Engage in a culture of communication and sharing with frontend chapters from other affiliates. We are looking for someone who: Has experience in operating web-based services. Even if you only have an interest in investing, we welcome passionate developers eager to grow. Values the importance of predictable code and actively implements it.

Join our innovative team as a Frontend Developer where you will play a crucial role in developing and enhancing our platform. You will work closely with designers and backend developers to create seamless user experiences. Your expertise in frontend technologies will help us deliver high-quality software solutions that meet our users' needs.

About Toss Insurance- Toss Insurance specializes in managing and selling insurance, focusing on reducing financial risks for customers and providing tailored coverage through a trust-based approach to insurance design aimed at achieving maximum customer satisfaction.- We strive to create a virtuous cycle where designers who provide excellent service from the customer's perspective can achieve greater results by building a consultation environment that focuses solely on customer satisfaction, without excessive sales pressure, and fostering a healthy insurance ecosystem.- Our goal is to develop an insurance management platform where agents, employees, and the company can grow together by providing an optimal IT infrastructure that allows everyone to fully utilize their expertise.About Your Future Team- As a Frontend Developer at Toss Insurance, you will collaborate with various colleagues to develop mobile products that are integrated into the Toss app, as well as an admin panel for managing user data.- Toss Insurance adopts an agile approach to product improvement, with teams engaging in product planning and brainstorming sessions roughly every 1-2 weeks. We rapidly formulate hypotheses, deploy products, gather feedback from customers, and refine our hypotheses based on that feedback.- The chapter of frontend developers collaborates organically across all Toss affiliates. Regular chapter meetings, including 'Tech Talks,' facilitate knowledge sharing on new technology topics and development know-how, as well as the development of common libraries for UI components and asynchronous processing.- You will be joining a team that includes another frontend developer. For insights into a day in the life of a Toss Insurance frontend developer, check out the article [How Does a Toss Insurance Frontend Developer Spend Their Day?](https://toss.im/career/article/insu_dailylog_Frontend_Developer).- For more on the Toss frontend chapter, see [All About Toss Frontend Chapter](https://tosspublic.notion.site/cc9367e44ff6424181899f3cf250f5d2).Your Responsibilities- You will create various screens within the Toss Insurance section of the Toss app, enabling customers to experience the best insurance coverage at the right price.- You will enhance the insurance consultation and customer management systems of Toss Insurance, allowing agents to consult effectively with clients. This role will provide you with extensive technical experience, from infrastructure to the customer-facing screens.- We are improving our frontend development environment to ensure that our web services are built and deployed in just one minute, all while providing the best user experience.Who We Want- We are looking for someone who can confidently develop stable services using React and TypeScript.- It’s important that you can define problems based on provided design guidelines and implement solutions swiftly.- We need someone who is proactive in identifying and analyzing problems to suggest effective solutions, rather than just completing assigned tasks.- Experience in improving legacy code to fit modern development environments or rapidly learning new tech stacks is a plus.Resume Tips- Instead of merely listing your experiences, please highlight the impact and learning points from your past work.- As we prioritize improving product quality based on customer feedback, we are looking for candidates who actively attempt to solve given problems.- If you have experience implementing complex services or demanding requirements, especially abstracting complicated or repetitive issues into simpler forms, please share.- Please mention any experience in gradually transitioning existing source code to a new codebase.Technologies We Use at Toss Insurance- Core: React, TypeScript, Next.js- State Management: React-Query, Recoil- Styling: Emotion- Package Managers: Yarn Berry, PNPM- Build: Webpack, ESBuild, SWC, Babel- CI/CD: GitHub Actions, CircleCI

Welcome to Toss PaymentsToss Payments is committed to understanding the challenges and inefficiencies businesses face, aiming to provide comprehensive solutions across technology and operations. Our goal is to deliver a seamless and convenient service experience for consumers while creating an environment where merchants can focus solely on their business.We work under the principle of 'innovating the electronic payment market', fostering a culture of mutual trust and collaboration. We are looking for colleagues who are eager to help shape the future of the payment industry!About the Team You Will JoinThe Frontend Developer position at Toss Payments is part of both the product team and the frontend chapter. Within the product team, you will collaborate with Product Managers, Product Designers, Server Developers, and fellow Frontend Developers to tackle complex projects in the payment domain, creating sustainable and high-quality services over time. You will have the opportunity to refine and specify the products that leverage your strengths during the interview process.The frontend chapter operates like a cohesive team! We hold regular chapter meetings and share new technology topics or development insights during 'Lightning Talks.' Participate in mob programming, interface design reviews, and various challenges that encourage continuous growth!This year, the frontend chapter aims to scale significantly to support the smooth operation of Toss's growing business.What We Have Accomplished So FarWe developed the payment widget to enable anyone to easily create their desired payment experience after thorough consideration.We designed and applied an intuitive and scalable payment SDK architecture that meets numerous requirements.We are enhancing dashboards and admin products to effectively address the complex policies and management elements from merchant contracts to payments and settlements.Beyond product development, we take the lead in reducing various inefficiencies within the company through the establishment of testing automation platforms, design standardization, and sharing development capabilities.Future Challenges We Want to Tackle TogetherWe look forward to crafting products that flexibly accommodate complex requirements. We are already applying technical challenges to effectively manage complexity in the payment domain while maintaining scalability. However, to drive these goals forward, we need more teammates to support us.We aim to completely eliminate accumulated legacy.The long-standing electronic payment market has not been without its technical debt. We are seeking individuals who can analyze areas that are hard to control or manage, rapidly reconfigure them with new technologies, and help create an environment where the business can grow swiftly.Who We Want to Work WithIndividuals who place high value on developer experience.Those who understand and practice the importance of automated testing.Enthusiasts of new technologies and various platforms.Individuals keenly interested in programming languages.Those who find joy in simplifying complex business challenges.Experience We ValueExperience with static type analysis using TypeScript or Flow is a plus.Experience in server-side rendering (SSR) and web app development within mobile applications is a plus.Experience in UI development considering responsive design, web accessibility, and web standards is a plus.Experience in test and deployment automation is a plus.Experience in configuring the operational infrastructure of web services or creating product monitoring systems is a plus.

About the Role Toss is looking for a Frontend Developer in Seoul to help build and improve web applications. This role works closely with designers and backend engineers to deliver smooth, effective user experiences. The team values modern frontend development and keeps up with current technologies. What You Will Do Develop and maintain web applications for Toss products Work with designers to translate UI/UX designs into functional interfaces Collaborate with backend developers to integrate APIs and data Use current frontend tools and frameworks as part of daily work Location This position is based in Seoul.

Join Our Dynamic Team! At Toss Bank, we focus on evaluating potential through the quality of your experiences and the expected growth in your career, rather than just years of service. About the Team You Will Join Our squads consist of 1-3 Frontend Developers collaborating closely to foster both service development and personal growth. As a service-oriented squad, we operate with autonomy, with teams ranging from 4 to 15 members, akin to small startups. The Frontend chapter at Toss Bank collaborates like a cohesive unit, sharing new technologies and development expertise through weekly meetings. Want to learn more about our Frontend chapter?→ *We are building a bank on the web*(https://toss.im/career/article/tossbank-frontend-interview) Curious about the growth opportunities after joining?→ *A week in the life of a Toss Bank Frontend Developer*(https://toss.im/career/article/tossbank-frontend-oneweek) Your Responsibilities You will develop a wide range of services, from internal operating systems to customer-facing financial services like account creation, card applications, savings, and loans. Enhance productivity by building libraries and automation tools, continuously improving the frontend development environment for optimal user experience. You will also work on common services like the Toss Bank homepage and corporate user services. Who We Are Looking For Individuals with experience in server-side rendering (SSR) and developing web applications within mobile apps. Passionate developers who enjoy understanding user flows deeply and enhancing user experiences for greater convenience and efficiency. Proactive problem solvers who can articulate and share their ideas logically. Those interested in automating and improving Frontend Operation systems (CI, CD, etc.). The Services You Will Manage You will create financial services such as savings, loans, credit cards, funds, and asset management that users directly engage with, including innovative products like 'Group Savings' and 'Grow Savings'. Take responsibility for the entire process from credit evaluation to card issuance and user experience, while driving growth through data-driven experiments that enhance MAU, profitability, and customer satisfaction.

Join the Frontend Chapter at Toss Securities! We create cutting-edge mobile products that operate in web views for Android and iOS apps, as well as desktop products for PC browsers and back-office operations, leveraging modern web technologies. Our goal is to simplify complex investment products, providing a sleek investment experience that is accessible to everyone. We utilize optimal engineering techniques to continuously display and trade vast amounts of real-time data seamlessly. Technologies We Use: React, Next.js, TypeScript: Building efficient UIs with component-based architecture and reducing bugs through static type checking. React-Query, Recoil, Jotai: Utilizing appropriate state management for server and client. Emotion, Vanilla-extract: Styling mobile products with emotion and desktop products with vanilla-extract. TDS (Toss Design System): Enhancing development productivity using our robust design system, contributing from bug reporting to component creation. WebSockets, SSE: Efficiently managing real-time data and optimizing server requests. YarnBerry, PNPM: Using package managers to their full advantage. Webpack, SWC, Babel: Improving development productivity with rapid build and deployment speeds. GitHub, GitHub Actions: Managing source code on GitHub with automated reviews by a minimum of two reviewers, supported by various GitHub bots performing static analysis and tests. Why Join Toss Securities Frontend Chapter? If you're a developer with a keen interest in investing, you can enhance both your development skills and investment knowledge simultaneously. Gain experience with various data visualizations such as charts, graphs, and tables while exploring how to optimize the performance of visualized real-time data. Experience handling real-time price traffic of up to 1400 TPS through sockets. Contribute to creating a design system exclusively for securities products. Participate in Engineering Days held every two weeks, where we share learning and insights on technology topics and development know-how through Tech Talks. We actively share knowledge and best practices to enhance productivity, even outside of Engineering Days. Engage with other frontend teams across different affiliates, fostering a culture of collaboration and knowledge exchange. We Are Looking For: Individuals with experience in operating web-based services. A passion for development and a strong desire for growth, even if only interested in investing. Understanding the importance of predictable code and executing it effectively.

Join Toss Payments as a Frontend Developer and be part of a dynamic team that builds user-friendly payment solutions. While we primarily seek candidates with over 4 years of experience, we also welcome passionate developers with at least 3 years of experience to apply for other positions listed in our job postings!About the Team:The Frontend Developer role at Toss functions within a matrix structure, collaborating closely with Product Owners, Designers, Server Developers, and Data Analysts to deliver innovative services and products.The Frontend Chapter operates as a cohesive team, sharing knowledge through regular 'Tech Talk' sessions and engaging in collaborative library development and code reviews.This year, our goal is to scale the Frontend Chapter to meet the growing demands of Toss's business, ensuring smooth operations across our platforms.Your Responsibilities:Develop safe and user-friendly payment interfaces.Create various B2B SaaS products to support merchant businesses.Enhance the frontend development environment with a focus on delivering exceptional user experiences and contribute to the creation of shared libraries like TDS.What We Are Looking For:Proficiency in SPA frameworks such as React, Vue, or Angular.Strong understanding of HTML, CSS, and JavaScript.A keen appreciation for UI/UX principles.Experience with distributed version control systems like Git.Please Highlight These Experiences on Your Resume:Experience with static type analysis in JavaScript using TypeScript or Flow.Familiarity with server-side rendering (SSR) and development of web apps within mobile applications.Experience in UI development considering responsive design, web accessibility, and web standards.Experience with testing and deployment automation.Proficiency in using module bundlers like Webpack.Technologies We Use:Core: React, TypeScript, Next.jsState Management: React-QueryStyling: EmotionPackage Manager: Yarn Berry

About the Team You'll Join As a Frontend Developer at Toss, you will be part of a matrix structure within the silo and frontend chapters. The development of services/products at Toss is executed through siloed organizational units, where a team of 6-8 members, including Product Owners, Designers, Server Developers, Frontend Developers, and Data Analysts, operates autonomously like a small startup. During the interview process, you will have the opportunity to refine and specify the product that showcases your strengths. The frontend chapter collaborates as a cohesive team! We conduct weekly chapter meetings where we share insights on new technical topics and development know-how through 'Tech Talks', and engage in library development and code reviews focusing on UI components and asynchronous processing. This year, the frontend chapter aims to scale up to ensure that Toss's business, which demands more resources than ever, runs smoothly. Your Responsibilities You will be responsible for identifying the roles our products can play in the market and facilitating their growth into mature services. Toss implements various web pages within the app, collaborating with partner companies to update services regularly, akin to a native app experience. We are enhancing our frontend development environment to ensure a seamless user experience, with web services built and deployed in just one minute. We Are Looking For Proficiency in SPA frameworks such as React, Vue, or Angular is highly desirable. We need individuals who can proactively identify issues, analyze them, and propose solutions rather than just completing assigned development tasks. Experience with static type analysis using TypeScript or Flow is advantageous. How to Write Your Resume Instead of merely listing your experiences, please describe the impact and learning points from your experiences. We value those who attempt to solve problems on their own, as we rapidly enhance product quality based on customer feedback. If you have experience with server-side rendering (SSR) and web app development within mobile apps, please highlight this in your resume. Please mention any experience you have with gradually transitioning existing source code to a new code base. Industrial Technical Personnel can apply for transfer/replacement and Research Personnel can apply for transfer only. Please provide detailed information about your military service in your resume. Technologies Used at Toss Core: React, TypeScript, Next.js State Management: React-Query, Recoil Styling: Emotion Package Managers: Yarn Berry, PNPM Build Tools: Webpack, ESBuild, SWC, Babel

주요 업무개발 및 개선: 토스신용카드, 내 보험 조회, 행운퀴즈 등 토스 앱의 웹 서비스.PC 웹 서비스: 토스 홈페이지 등 다양한 웹 서비스 개발.사용자 경험: 완벽한 사용자 경험을 위한 프론트엔드 개발 및 배포 환경 개선 참여.UI 라이브러리: 사내 프론트엔드 공통 UI 라이브러리(TDS) 개발.

CLO Virtual Fashion is at the forefront of the digital fashion revolution, leveraging advanced 3D garment simulation algorithms to provide a comprehensive suite of services encompassing design, manufacturing, marketing, fitting, and styling.Since our inception in 2009, we have been dedicated to creating a new ecosystem for digital fashion. Our software solutions, including CLO, Marvelous Designer, and Jinny, along with platforms like CLO-SET and CONNECT, empower professionals to streamline workflows in the fashion industry efficiently and sustainably.With a global presence in 16 offices across 13 countries in Asia, North America, Europe, and South America, CLO Virtual Fashion continues to expand its influence, serving a diverse range of clients worldwide.

Join the Toss Securities Frontend Chapter!At Toss Securities, we are dedicated to creating innovative mobile products that seamlessly integrate native Android and iOS applications with web views using modern web technologies. Our mission is to simplify complex investment products, ensuring that everyone can enjoy a user-friendly and sleek investment experience.We leverage cutting-edge engineering techniques to showcase real-time data without interruptions, optimizing performance for our users.Your Responsibilities:- Optimize performance across various domains including browser, CDN, and network to provide the best user experience for over 2.5 million daily active users and 90,000 concurrent users.- Provide guidance and modules to product developers for easy performance optimization.- Actively manage a redundant deployment infrastructure utilizing cloud services such as AWS and Cloudflare.- Develop monitoring and error response tools tailored for real-time traffic.- Build a self-service MFA development framework that allows independent development across teams.- Provide a client log SDK operated by Toss Securities.- Create a development environment that facilitates a smooth transition between native and web view screens, free from compatibility issues.What We've Achieved:- Our mobile products at Toss Securities operate as a unified service, employing a Micro Frontend Architecture (MFA) to reduce complexity in product development.- Implemented a SharedWorker-based module to optimize WebSocket communication for our PC platform.- Established a deployment pipeline that supports rapid and reliable FE platform releases multiple times a day.What We're Looking For:- A deep understanding of frontend development and deployment environments.- Proven experience in identifying and improving issues within these environments.- Experience in accurately analyzing and resolving root causes beyond merely solving problems.- A background in automating frequent tasks to a high degree.- A keen interest in testing within frontend environments.Resume Tips:- Highlight the impact and learning points from your experiences, rather than just listing them.- Share your understanding of web browser mechanics and any experiences that improved web service performance.- Provide details on your understanding of transpiling and bundling, especially in supporting a wide range of browsers efficiently.- Mention any experience managing multiple packages within a single monorepo.- Discuss your proactive approach to researching and adopting new technologies.Technologies We Use:- Core: React, TypeScript- Package Managers: PNPM, Yarn- Build Tools: ESBuild, Vite, Webpack, SWC, Babel- Infrastructure: AWS, CloudFlare, Terraform- Monitoring: Sentry, Grafana- CI/CD: GitHub Actions, GoCDYour Journey with Toss Securities:- Application submission > Pre-assessment task > Technical interview > Cultural fit interview > Reference check > Offer negotiation > Final acceptance and onboarding.Please Note:- Any false information in your resume or disciplinary issues during your employment history may result in cancellation of recruitment.- Candidates subject to hiring restrictions according to Toss Securities regulations may also be disqualified.- Individuals with disabilities and veterans will be given preferential consideration in accordance with relevant laws.- The job title upon joining will be 'Frontend Developer'.A Message to Future Colleagues:"We support our best colleagues to achieve exceptional performance."

Join our innovative team as a Frontend Platform Engineer, where you will play a pivotal role in developing and enhancing our cutting-edge frontend technologies. You'll collaborate closely with cross-functional teams to design, implement, and maintain high-quality user interfaces that elevate our platform's performance and user experience. If you're passionate about creating seamless web applications and have a knack for problem-solving, we want to hear from you!

Welcome to Your Journey with Daangn Team!At Daangn, we strive to create an environment where individuals can grow alongside the company. Our hiring team is here to assist you in achieving those joyful moments with wonderful colleagues. Introducing the Commerce TeamThe Commerce Team is dedicated to creating a new shopping experience within Daangn. We aim to redefine local commerce in our unique way, moving beyond just an online shopping mall. Our platform connects seamlessly with various Daangn services such as second-hand trading, community engagement, and local maps, allowing our 20 million users to enjoy shopping in a familiar environment.Our commerce platform embodies Daangn's DNA of community engagement, fostering group purchases with neighbors and offering exclusive local merchandise that provides new values not found in traditional e-commerce. We envision a commerce experience that makes shopping special through neighborly connections.The Commerce Team operates like an early-stage startup. Everyone acts as a project manager and researcher, obsessively focusing on customer problems. We encourage cross-functional collaboration, where anyone can propose ideas, experiment, and learn from outcomes. Quick execution and a learning attitude from failures are essential to us.Your RoleCurrently, we are focused on solidifying the fundamental functions of commerce such as product management, payment, delivery, and exhibitions. However, we plan to gradually introduce innovative commerce features infused with Daangn's unique character. Your ideas and execution will play a crucial role in shaping the direction of our services.Create an Engaging Commerce User ExperienceDesign and implement intuitive interfaces from product exploration to purchase completion.Ensure a consistent shopping experience across web views and websites while rapidly deploying event/exhibition pages.Experiment and Learn QuicklyQuickly implement and test various experimental features that go beyond traditional commerce functionalities.Regularly conduct A/B testing and continuously improve user experience based on data.Develop Efficient Management Tools for SellersBuild seller pages for product registration, order/inventory management, and settlements.Provide dashboards that visualize sales performance at a glance through data visualization.Maximize Development Speed with AIRapidly implement UI components and prototypes using tools like Claude Code and Cursor.Automate repetitive tasks with AI, investing saved time into user experience innovations.Ideal Candidate Profile4+ years of experience in frontend development.Obsessive about solving customer problems and committed to seeing projects through to completion.Quickly adapt to new tech stacks and balance rapid execution with scalability considerations.Collaborate openly with diverse teams and maintain a learning attitude from failures.Make autonomous engineering judgments and executions even before business decisions.Actively utilize AI tools (e.g., Claude Code, Cursor) to enhance productivity and focus on business impact.Preferred QualificationsExperience with TypeScript and React.Understanding and experience in the e-commerce domain.Handled complex state management (e.g., Recoil, Zustand).Familiarity with GraphQL architecture and experience using Relay.Understanding of execution environments (e.g., web browsers, in-app web views) and their policies.Additional NotesThis is a full-time position with competitive compensation and benefits.

Join the Frontend Chapter at Toss Securities!We are developing mobile and desktop products using modern web technologies, including services for Android and iOS app web views and back-office operations.Our goal is to provide a sleek investment experience that makes complex investment products accessible to everyone while leveraging optimal engineering techniques to display real-time data seamlessly.About the TeamCollaborate with Platform Designers to define what constitutes an excellent UX for Toss Securities services.Assist designers in creating high-quality UX designs and develop tools that simplify implementation for developers.Your ResponsibilitiesDevelop and maintain the design system utilized in Toss Securities services.Establish principles and structures that ensure the design system provides consistent and scalable interfaces.Define UX rules such as responsive design, keyboard usability, and loading experiences to ensure comfortable use across all environments.Create a “Design Linter” that allows designers to receive suggestions for improved UX directly in design editor tools.