Frontend Platform Engineer

Join our innovative team as a Frontend Platform Engineer at Toss, where we revolutionize the way people manage their finances through cutting-edge technology and seamless user experiences.

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!

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 dynamic team at Daangn as a Frontend Software Engineer dedicated to building engaging community platforms. You will be responsible for developing user-friendly web applications that enhance user experiences and foster community interaction. Collaborate with cross-functional teams to design and implement innovative solutions that meet the needs of our users.

Welcome to the Daangn Team Journey!At Daangn, we are committed to creating an environment where individuals can grow alongside the company's success.Our recruitment team is here to help you engage in meaningful discussions with wonderful colleagues. Introducing the Notifications TeamThe Notifications Team plays a crucial role in shaping the user notification experience at Daangn. Notifications serve as the most powerful channel to reconnect users with the app outside of it. This direct interaction on the user’s phone lock screen can influence the behavior of our 20 million monthly active users. We are not just a team that sends notifications; we design the moments that bring users back to Daangn and guide them to their next actions.The notification experience goes beyond a single push notification. It can lead users directly to chatrooms or posts, and help them rediscover missed interactions within the app's notification center. While push notifications initiate actions, the notification center serves as a space to reconnect relationships and context. Our team collaborates to design these two experiences, fostering connections both inside and outside of Daangn.Daangn encompasses more than 15 services at different stages of growth, including second-hand trading, part-time jobs, real estate, and community forums. The Notifications Team develops a comprehensive experience that ensures notifications reach users meaningfully and translate seamlessly into actions.We are currently moving beyond traditional formulas to discover new strategies for Daangn's next growth phase. In our small team, engineers contribute to defining problems, proposing directions, and designing experiments that shape the future of our products.Your ResponsibilitiesRedesign the notification center to enable users to quickly grasp and act on notifications from over 15 services, focusing on list structure, grouping, read/unread status, personalization, and filtering.Implement seamless entry experiences for users who tap on push notifications, guiding them to appropriate contexts like chatrooms, posts, or specific service pages.Develop the frontend for tools that precisely target and manage notifications based on user segments, banners, and event flows, creating a foundation for faster experimentation.Collaboratively build an experimental environment to measure click-through rates, conversion rates, and incremental effects, enabling rapid A/B testing.Work closely with PMs and designers to provide input on product direction based on technical feasibility and constraints.We Are Looking ForIndividuals with over 3 years of frontend development experience.Experience in developing mobile webview applications.A strong commitment to delivering high-quality user experiences.Ability to understand product goals and context, and to collaboratively explore better solutions beyond just implementation.Flexibility to adapt in a fast-paced environment requiring rapid experimentation and iteration.Additional Preferred QualificationsExperience developing frontends for user communication channels such as push notifications, in-app messages, and notification centers.Familiarity with building A/B testing infrastructure or experience in experimental development cycles.Experience utilizing design systems or component design.Experience building platform frontends that integrate with various services.Experience in performance optimization, loading strategies, and list rendering in large-scale user environments.Additional InformationFor full-time positions, there is a 3-month probation period.We prioritize the hiring of individuals with disabilities and veterans as per the 'Act on the Promotion of Employment of Persons with Disabilities' and 'Act on the Honorable Treatment and Support of Veterans'.Application Process1. Document screening → 2. Video interview (live coding test) → 3. Job interview → 4. Culture fit interview and reference check → 5. Negotiation → 6. Final acceptance and onboarding

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.

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 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.

Join Daangn as a Frontend Software Engineer Intern and contribute to creating exceptional user experiences for our platform. This is an exciting opportunity to work under the guidance of seasoned professionals in a dynamic environment.

Role Overview Tosscareers is hiring an AIOps Platform Engineer in Seoul. This role focuses on building and improving AIOps platforms that support IT operations. The work centers on integrating AI with operations to improve performance and reliability. What You Will Do Work with teams from different disciplines to design and develop AIOps solutions Implement platforms that help automate and optimize IT operations Contribute technical expertise to projects that connect AI tools with operational workflows Support the stability and efficiency of IT systems through AI-driven approaches Location This position is based in Seoul.

# Join Our Team- The AI Platform team is on a mission to create a platform that enables everyone to use AI technology quickly and reliably. We technically support the use of AI across Toss.- We are developing the necessary tools and platforms for new AI systems such as Retrieval-Augmented Generation, Agents, and Assistants to be rapidly experimented with and reliably operated.- The platform we create is not just a simple toolkit; it is designed with scalability in mind, allowing AI technology to be implemented by more teams effectively.- Addressing unresolved problems means that collaboratively defining and structuring technical directions is crucial.- **Want to learn more about Toss’s data organization?** [→ *Toss Data Division Wiki*](https://recruit-data-division.oopy.io/)# Responsibilities- Integrate LLM-based components such as Retrieval, Generation, and Vector Search into a platform that various teams can reuse.- Provide features that integrate both SaaS and self-hosted LLMs and ensure stable operations.- Design the foundation for creating and experimenting with Agent systems more easily, including prompts, tools, and context configurations.- After experiments, ensure stable operation in the service by systematizing and tooling the serving and operational flow of RAG and Agents.- Develop a foundation to quantitatively evaluate the performance and quality of Agents and provide it as a platform.- Design a common environment and experience to enable rapid experimentation and application of AI systems not only within the team but also across other teams.- Structure unformatted technical elements and create directions that can expand into broader problems.# We Are Looking For- Individuals with experience applying technologies such as LLM, RAG, and Agents to real-world problems.- Those who can technically define unstructured problems and systematically solve them.- Candidates who have collaborated with multiple teams to develop and operate technology as if it were a product.- Those who can quickly adapt to new technological trends and integrate them naturally within the team.- Individuals interested in simplifying complex AI systems into a consistent and straightforward user experience.# Preferred Qualifications- Experience designing RAG components such as Retrieval, Generation, and Vector Search independently and integrating them at the system level.- Experience selecting and operating various LLM serving structures (OpenAI API, HuggingFace, vLLM) tailored to service situations.- Experience structuring various purpose-driven Agents and applying them in service operations is highly welcomed.- Experience proactively designing experimental environments or tools based on the requirements of platform users (internal developers, model engineers, etc.).- Experience creating and operating common platforms or RAG-based systems that can be extended across multiple projects or domains is especially desirable.# Resume Tips- If your past projects had significant impacts on the organization, please detail them.- Rather than just listing languages, platforms, frameworks, or technologies used, provide context about the project's objectives, the methods you employed, and how you solved the problems.- Include experiences where you resolved critical issues during platform operations or optimized performance/resources.- If you have contributed to open source by fixing bugs or enhancing functionalities, please share those experiences.# The Journey to Join Toss- Application submission > Job interview > Cultural fit interview > Reference check > Compensation negotiation > Final acceptance- The job interview will feature in-depth technical interviews focused on ML system design.# A Message for Future Colleagues“We don’t just serve rapidly evolving AI models; we build systems that ensure these models operate stably and are continuously improved.”- The AI Platform team is responsible for the serving, experimenting, and operating infrastructure of various AI technologies such as LLM-based services, RAG systems, and search infrastructure to ensure smooth operation in production environments.- We efficiently manage GPU resources and clusters, utilizing vLLM, Triton, Model Registry, etc., to automate experiments and deployments.

Daangn is seeking a Frontend Software Engineer Intern to join its real estate platform team in Seoul. This internship offers the chance to work alongside experienced developers and contribute to projects that influence how people interact with real estate online. What you will do Work closely with the engineering team to build and refine frontend features for the real estate platform. Write, review, and maintain code with guidance from seasoned developers. Support efforts to enhance user experiences related to property search and discovery. Location This position is based in Seoul.

Join Our Dynamic Team!The Data Engineer for Workflow Platform is an integral member of Toss Bank's Data Division, specifically within the Data Platform team.This team comprises three key areas: Data Infrastructure & Hadoop, Streaming Platform, and Workflow Platform.We operate various Data Platforms, including Hadoop, Kafka, CDC, and Airflow.Our mission is to ensure the reliability and scalability of the enterprise data infrastructure, ensuring all data is securely collected and processed.Your Responsibilities:Design and operate a large-scale data workflow execution platform in an on-premise Kubernetes environment.Optimize resources to ensure the stable execution of large workflows across various data organizations, enhancing platform performance and reliability.Collaborate with enterprise data engineers to improve the execution quality of the overall data pipeline and enhance developer experience.Monitor workflow execution status, design and improve systems for automated fault detection, alerts, and recovery procedures.Safely manage workflow executions in accordance with internal control standards of the financial sector, advancing a systematic history management system.Continuously review and implement new technologies and open-source solutions to enhance the performance and scalability of the workflow platform.We Are Looking For:Experience operating an Airflow-based workflow orchestration system with proven improvements in stability, scalability, and execution efficiency.Background in developing Python-based data workflows and platform services.Understanding of container technologies (Docker, Kubernetes, etc.) and experience in automating service deployment and configuration using tools like Helm.Ability to understand company environments and communicate effectively with various teams during service development.A keen interest in improving operational efficiency and optimization in large-scale workflow environments.Desire to enhance platform user experience to facilitate easier and safer pipeline development and operations for in-house data engineers.A proactive approach to analyzing, modifying, and improving open-source solutions at the code level to solve issues.Resume Submission Tips:Clearly outline impactful projects you have worked on in your career.Focus on experiences related to data platforms, particularly with Airflow, Kubernetes, and Python.

Join Us and Engage in Exciting Work! After completing a comprehensive onboarding process to familiarize yourself with the Toss data environment, you will be part of the Data Warehouse Team, undertaking the following responsibilities: Develop a data quality platform that enhances table consistency, advances DQ rules, and establishes health check metrics. We aim to create a reliability management platform allowing all data users to work without questioning, 'Can I trust this data?'.Enhance the GraphRAG pipeline. Build a knowledge graph construction pipeline that extracts entities by parsing ontology YAML, SQL, and code, followed by vector embedding for indexing in Elasticsearch, making Toss's data assets easily navigable for everyone.Design and operate MSA architectures. Split necessary services for the ontology platform into microservices, ensuring each is designed, implemented, and operated reliably.Develop AI agent infrastructure. Create a multi-agent workflow execution environment based on open-source agent frameworks like CrewAI. Establish an MCP Tool Registry and develop integration infrastructure with external MCP servers.Build an early warning platform. Create a monitoring system that detects anomalies in data lineage, code, and trends, automatically performing alerts and analyses to identify issues before they escalate.Develop a lineage tracking engine. Create a system that automatically analyzes the extent of impacts by parsing SQL to extract column-wise influence relationships, determining how far changes propagate.

Join our dynamic team as a Data Engineer specializing in log platforms. In this role, you will work with cutting-edge technologies to design, build, and maintain robust data pipelines. Your expertise will help us manage and analyze extensive log data, enabling improved decision-making and operational efficiency.

Role overview Airwallex is seeking an Engineering Manager for the GTPN Platform in Seoul. This position leads a group of engineers dedicated to improving the platform’s features and reliability. The role involves close collaboration with teams throughout the company to achieve technical goals and support ongoing enhancements. What you will do Guide and mentor engineers working on the GTPN Platform Oversee projects that expand and strengthen the platform’s capabilities Collaborate with cross-functional teams to meet project objectives Promote a culture that prioritizes technical quality and creative problem-solving Location This role is based in Seoul, South Korea.

About the Team You'll Join The ML Engineer (Platform) at Toss Securities is part of the ML Platform Team within the Product Division. The mission of the ML Platform Team is to create an optimal machine learning platform that enables efficient and stable development and operation of various AI/ML services at Toss Securities. Your Responsibilities Upon Joining Develop and enhance the Gateway system, the gateway for ML services. Develop and operate a Gateway system based on FastAPI that handles enterprise-level LLM API requests. Design and implement authentication, routing, traffic control, fault isolation (Circuit Breaker, Fallback), large-scale TPS processing, and load balancing strategies from both application and infrastructure perspectives in the FastAPI-based Gateway application. Manage and serve ML services. Directly operate a machine learning model serving system in a Kubernetes environment. Design and improve the LLM serving architecture to operate stably under large traffic conditions. Monitor latency, error rates, resource usage, and analyze and resolve operational issues for the models in service. Identify root causes of failures and implement structural improvements, including operational policies and architecture. Develop and manage a common ML platform for the company. Develop and manage a common platform for efficiently operating the training and serving of internal ML/LLM models based on Kubeflow. Continuously monitor and optimize the performance and resources of workloads executed on the platform. Build infrastructure for LLM-based services. Operate LLM services using various serving frameworks such as vLLM, SGLang, and Triton. Manage the environment to ensure stable operation of training and serving workloads on high-performance GPU clusters like H100/B300. Build and operate a large-scale data training environment for finance domain-specific LLMs. We Are Looking for Candidates Who: Are proficient in one or more programming languages such as Python, Go, Java, or Kotlin, and have experience designing and developing API servers in production environments. Have experience developing or operating API Gateways (Nginx, Kong, etc.) or LLM Routers (LiteLLM, Envoy AI Gateway, etc.), with a background in handling high-volume traffic and incident response. Have experience operating serving logs and event pipelines integrated with Kafka, Elasticsearch, and Kibana. Have experience defining monitoring metrics for model serving and configuring and operating dashboards using Prometheus and Grafana. Have experience operating ML/LLM model serving using KServe, BentoML, vLLM, SGLang, etc. Have experience directly managing MLOps components (Kubeflow, KServe, Airflow, Argo CD, MLflow, etc.) in Kubernetes environments and debugging and resolving issues. Can design and apply long-term improvement plans through root cause analysis beyond short-term responses to issues that arise during service operations. Additional Preferred Experience: Experience in related fields or technologies will be a plus.

# 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.

Join Our Team at AirwallexAt Airwallex, we are redefining the financial landscape for global businesses through our integrated payment and financial solutions. With a unique blend of proprietary technology and infrastructure, we empower over 200,000 businesses—including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN—to seamlessly manage their accounts, payments, and treasury on a global scale.Founded in Melbourne, Airwallex boasts a dynamic team of over 2,000 innovative tech professionals across 26 offices worldwide. Valued at $8 billion and backed by prestigious investors such as T. Rowe Price, Visa, and Mastercard, we are at the forefront of developing the future of global payments. If you’re ready to embark on the most ambitious journey of your career, we invite you to join us.What We Are Looking ForWe value ambitious creators with a founder-like spirit who seek to make a real impact while accelerating their learning and taking ownership of their work. If you possess strong skills in software engineering, a sharp analytical mindset, and are driven by our mission and operating principles, we want you on our team. You thrive in a fast-paced environment, have a curious mindset, and make judicious decisions backed by thorough analysis.As a humble and collaborative individual, you have the ability to turn innovative ideas into tangible products and are proficient in using AI to enhance productivity. Here, you’ll face complex challenges alongside exceptional teammates while advancing your career in the evolving landscape of global banking. If this resonates with you, let’s create the future together.About the GTPN TeamThe Global Treasury and Payment Network (GTPN) team is central to Airwallex’s payment infrastructure. As our inaugural product and the largest revenue generator, GTPN plays a crucial role in enhancing customer experiences. Operating at the crossroads of traditional and modern finance, we are committed to expanding and fortifying our global treasury and payment network, while delivering innovative financial products on a solid financial foundation.We are a truly global and cross-functional engineering team, with talented engineers located in established and emerging tech hubs including the US, Singapore, Hong Kong, and Shanghai. As we scale our operations, we are on the lookout for passionate Senior Software Engineers to join our ranks. Collaborate with us to tackle exciting challenges and drive innovation in our industry.

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