Data Engineer at Toss Payments | Seoul

Join our innovative team at Toss Payments as a Data Engineer, where you'll play a crucial role in building and optimizing our data infrastructure. You will work with cutting-edge technologies, collaborating with cross-functional teams to drive data-driven insights and solutions. Your expertise will help us enhance our payment systems and improve user experie…

# Company Overview - The Toss Payments team aims to revolutionize the electronic payment market in South Korea. With the expansion of online and mobile commerce, Toss Payments seeks to provide innovative payment solutions that benefit both businesses and consumers through technological and business model advancements. # Key Responsibilities - Continuously enhance the Stability, Scalability, Availability, and Latency of our systems.- Build effective monitoring systems to proactively detect issues and respond swiftly.- Resolve incidents and design preventative solutions for future occurrences.- Establish and execute performance testing environments to support service growth.- Experiment with and evaluate the adoption of open-source products. # Qualifications - Expertise in Java-based technologies.- Solid understanding of software engineering principles.- Deep knowledge of Linux and network systems.- Comprehensive understanding of Microservices Architecture (MSA).- Enjoy working in mission-critical service environments with a strong sense of responsibility to build robust services.- Adapt quickly to new technologies and embrace change for continuous personal and professional growth. # Technologies at Toss Payments - Java Spring Framework, JPA/Hibernate, GradleJenkins, Git, Docker, Kubernetes + IstioKafka, Elastic, InfluxData, Grafana, MemcachedEJB, Pro C, AnyLink, Control M, Weblogic, Oracle # Journey to Join Toss Payments- Application Submission > Technical Interview > Cultural Fit Interview > Salary Negotiation > Final Acceptance and Onboarding # Industry Insights- The Future of the Payment Industry, Created Anew by Toss

Join Toss Payments! Toss Payments strives to understand business challenges and inefficiencies, aiming to provide comprehensive solutions from technology to operations. We are committed to delivering an effortless and convenient service experience for consumers while ensuring a focused environment for merchants. We operate under the principles of autonomy and responsibility, with a strong culture of mutual trust, all aimed at innovating the electronic payment market. We are looking for colleagues who are eager to help shape the future of the payment industry! About Your Future Team The Legal Counsel position is part of the Legal & Compliance team at Toss Payments. This team guides the organization in navigating legal risks, ensuring that we safely reach our goals by identifying, mitigating, or circumventing these risks. Our team comprises members with diverse backgrounds from financial holding companies, securities firms, IT companies, and major law firms, fostering positive synergy. Rather than joining a fully formed team, you will have the opportunity to play a pivotal role in shaping the team from its early stages. We are looking for an individual to take on responsibilities following our recruitment in 2023. Your Responsibilities Review contractual structures related to transactions between financial institutions and merchants, such as banks and credit card companies. Support responses to various lawsuits, disputes, and complaints that may arise during business operations. Assess compliance risks related to electronic payment businesses, electronic financial operations, and new business initiatives, conducting legal reviews and monitoring compliance with laws and internal regulations. Respond to data requests and inquiries from regulatory bodies such as the Financial Supervisory Service, facilitating smooth communication with supervisory agencies and handling reporting obligations as required by relevant laws. Contribute to Toss Payments' growth by examining payment business models (PG, VAN) and collaborating with team members to ensure compliance with requirements. Provide legal advisory services for new businesses and the overall operation of services, understanding Toss Payments' business structure. Draft and review contracts necessary for various operations to support achieving business objectives. Who We’re Looking For A qualified candidate who has at least 3 years of experience as a corporate lawyer or in-house counsel. Experience reviewing fintech and financial regulations, such as the Electronic Financial Transactions Act, Specialized Credit Finance Business Act, and related laws. Background as in-house counsel at IT/fintech firms or experience in corporate legal advisory work at law firms specializing in financial companies. Experience dealing with regulatory agencies and engaging in public relations with authorities like the Financial Supervisory Service and Financial Services Commission is preferred. Desirable qualifications include expertise in IT, information processing systems, information security, or related academic backgrounds. Experience with new business evaluations, such as regulatory sandboxes or acquiring new licenses, is a plus.

Join Our Data Platform Team!As a Data Engineer at Toss, you will be part of our Data Platform Team.The team consists of Data Engineers and Data Analytics Engineers.We are responsible for building platforms and data pipelines essential for analyzing the services provided by Toss.Your ResponsibilitiesDevelop and operate OLAP (Online Analytical Processing) based data pipelines.Design and optimize systems for reliable operation of large-scale data analysis and real-time/batch data pipelines.Develop and manage batch and streaming pipelines to load various types of data generated at Toss.Continuously improve data models and processing logic based on service requirements.We Are Looking For Candidates Who HaveExperience operating services in a Kubernetes (K8s) based environment.Experience in designing and operating data streaming pipelines using Kafka and Kafka Connect.Experience in processing large volumes of data using Apache Spark (Batch/Structured Streaming).Additional Skills That Would Be a PlusExperience in operating and tuning MPP/OLAP engines like StarRocks or ClickHouse.Experience in building Data Lakehouses using Open Table Formats such as Apache Iceberg, Hudi, or Delta Lake.Experience in real-time data processing using streaming frameworks like Kafka Streams or Apache Flink.Experience in designing and operating ETL pipelines based on Airflow.Your Journey to Join TossApplication Submission > Job Interview > Cultural Fit Interview > Reference Check > Compensation Negotiation > Final Offer

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.

Join Toss Payments as a Marketing Manager and play a pivotal role in shaping our marketing strategies. You will collaborate with cross-functional teams to design and implement comprehensive marketing campaigns aimed at expanding our market presence. Your creativity and analytical skills will drive innovative solutions that resonate with our target audience.

Join our dynamic team at Toss Payments as a TCP Server Developer. We are looking for a skilled developer who is passionate about building high-performance server applications. You will be working with cutting-edge technologies to ensure seamless communication across our platforms.

# Introducing Toss Payments Toss Payments is dedicated to innovating the electronic payment market, providing merchants with comprehensive solutions from technology to operations, while offering consumers a seamless and user-friendly payment experience. Visit our introduction page: https://introducetosspayments.oopy.io/ # About the Team You'll Join The Account Manager role is part of the Key Account Growth Team within the Toss Payments Sales Tribe. This team is responsible for sales and partnerships related to Toss Payments' electronic payment services, focusing on existing clients, partners, and international payment companies. We aim to grow Toss Payments' business by introducing core payment products, discovering and expanding partnership channels, and enhancing integration of international payment products. # Your Role and Responsibilities Lead, manage, and take responsibility for the entire sales process, including introduction, negotiation, and onboarding of core payment products for existing clients. Engage directly with key decision-makers, from operational staff to executives, during the sales process, driving proposals and decision-making for payment product integration. # Who We Want to Join Us 5+ years of experience in cross-selling and upselling to large and small clients, preferably in a payment gateway (PG) company. Strong problem-definition skills to address various challenges that arise during the client sales process, coupled with flexible thinking to find solutions. Ability to comprehend and clearly explain complex products, policies, and processes. Proven persuasive communication skills, with a history of successful negotiations with clients and internal stakeholders. Experience in technology-based B2B sales is a plus, but not mandatory. # Application Tips Detail your experiences leading client sales and the quantifiable results achieved during that process. If you have experience creating proposals and negotiating with clients, please elaborate on those experiences. # Journey to Join Toss Payments Application submission > Job interview > Cultural fit interview > Reference check > Offer negotiation > Final acceptance and onboarding. A Message for Future Colleagues “Finding growth opportunities through sales and achieving significant success through negotiation and problem-solving is incredibly rewarding.” Having transitioned from a global company to Toss Payments, I now have the autonomy to define my sales deals and tackle challenges without waiting for approvals. If you're looking to find growth opportunities through sales and create significant successes through negotiation and problem-solving, apply for the Account Manager position now!

# Join Our Team- As a KYC Operations Assistant at Toss Payments, you will be part of the Anti-Money Laundering Team.- Our goal is to operate AML processes that reflect the Toss ethos: simple yet highly trusted. We continuously seek ways to enhance the effectiveness and reliability of our processes.# Responsibilities- Review documentation required for customer verification (KYC).- Identify parties that may exploit Toss Payments services for money laundering.- Devise strategies to enhance the effectiveness and reliability of the KYC processes.# We Are Looking For- Individuals with high concentration and perseverance.- Those aspiring to kickstart their careers as AML specialists.- Experience in KYC-related tasks, such as documentation review, is a plus.- Candidates who can commit to at least 6 months are preferred.# Resume Tips- Clearly state your motivation for applying to Toss Payments and the KYC Operations Assistant role.- If you have not handled AML tasks, provide detailed descriptions of your relevant work experience.- If you have experience in AML tasks, please elaborate on your specific responsibilities and achievements.# Important Information- Employment type is on a fixed-term contract basis for 6 months from the start date.- The contract may be extended upon mutual agreement.- Working hours are Monday to Friday, from 10 AM to 7 PM (including a 1-hour break).- Monthly salary is 2,400,000 KRW, which includes weekly allowances and meal expenses.- Employees who complete a contract of more than one month will receive a certificate of completion.# Join Us at Toss- Application Process: Document submission > Job interview > Final acceptance- Application Period: Ongoing recruitment (until positions are filled).

Join Our Dynamic TeamThe Data Engineer (AI) position is part of the AI Data Platform Team at Toss Securities.The AI Data Platform Team comprises Data Engineers, Machine Learning Engineers, Server Engineers, and Product Operation Managers, fostering collaboration across various roles.Our mission is to develop a unique data moat for Toss Securities through the integration of diverse securities domain data and AI technologies, providing essential insights for investors.We utilize external LLMs and conduct training and evaluation of our internally developed models while leveraging various data platform technologies.Your ResponsibilitiesProactively identify and lead projects to solve business challenges at Toss Securities, overseeing the entire process from data architecture design to development and operation.Build and manage a securities data platform that integrates, processes, and serves global market data.Establish and maintain a knowledge graph platform for real-time domain data.Create and operate data pipelines that underpin AI service products.Develop and manage a feature store for personalized recommendation services in real-time.Ensure data integrity by designing, developing, and operating data quality verification and monitoring systems.We Seek Candidates WhoHave over 5 years of experience in data engineering.Can comprehend requirements and analyze technical trade-offs to determine the optimal data architecture in a given environment.Possess a solid understanding and experience in large-scale distributed processing and data platforms.Have experience sharing knowledge with peers and junior engineers, contributing to the technical growth of the entire team.Are interested in leveraging AI beyond mere tools, understanding its principles to innovate engineering productivity.Can coordinate with colleagues across various functions and provide constructive feedback.Are eager to take on new challenges and proactively learn and grow.Preferred ExperiencesExperience with Kafka-based stream processing and large-scale distributed data processing (Hadoop/ClickHouse/ElasticSearch).Experience building and operating data pipelines using Airflow, Docker, and Kubernetes.Experience in monitoring and managing data integrity and quality.Stay up-to-date with the latest trends in AI/data technologies and have an interest in automation and productivity enhancement.

About the Team You Will Join The Data Engineer (Search) at Toss Securities is part of the AI Tribe within the AI Intelligence Silo. This Silo is a collaborative team consisting of Data Engineers, Machine Learning Engineers, Server Engineers, Frontend Engineers, Product Owners, and Product Designers, all working towards creating AI-driven information services leveraging securities domain data. Our focus is not just on presenting information but on rapidly experimenting with how to process and present data in a way that assists investors effectively. Search acts as the primary entry point connecting various securities data and AI services, with the Data Engineer (Search) being responsible for search/indexing functionalities that can be utilized across AI-based data services. The role centers around designing and operating the data and indexing aspects that constitute our search services, concentrating on stably designing and managing the data flow and infrastructure for search indexing rather than just enhancing algorithms or ranking models as seen in larger portals or e-commerce. Key Responsibilities Design and manage the indexing pipeline for Toss Securities search services, including stocks, autocomplete, news, and community features. Architect and reliably operate real-time/big data pipelines for search indexing. Gain insights into Elasticsearch-based search indexes and enhance the indexing structure and performance from a data perspective. Collaborate on data integrity management and re-indexing strategies to ensure stable data delivery for search. Gradually expand your responsibilities into areas beyond search, such as Graph search and ingestion of new data sources. Who We Are Looking For A candidate with over 3 years of experience in Data Engineering. Strong programming skills are preferred. Experience in designing or operating real-time or batch-based data pipelines is a plus. Experience in collecting and processing diverse data sources for service utilization is beneficial. Familiarity with big data processing platforms such as Spark, Hadoop, Impala is an advantage. A passion and curiosity for learning new domains and technologies are highly valued. A preference for collaborative environments where feedback and growth are encouraged is ideal. Additional Preferred Experience Experience using or managing search service infrastructures like Elasticsearch, Lucene, or Solr is advantageous. A genuine interest or experience in search domains such as search engines, recommendations, or ranking systems is a plus. Resume Tips Please detail your experience in designing/developing/operating data pipelines, ETL, streaming, etc. Highlight your role in projects and what you learned and improved through those experiences. If you have experience with search or Elasticsearch, even on a smaller scale, please describe the problems you solved. Your Journey to Joining Toss Securities Application submission > Job interview > Cultural fit interview > Reference check > Compensation discussion > Final acceptance and onboarding

# Join Our Team- As part of the Toss Payments team, you will navigate legal risks in the payment industry, providing guidance to ensure safe and secure achievement of our team's objectives by identifying and mitigating these risks.- You will address various legal matters related to corporate restructuring and other legal issues within the company, ensuring ongoing growth by reviewing and resolving necessary legal concerns.- In the innovative journey of Toss Payments, where we venture into uncharted territories and offer unique services, you will have the opportunity to engage in forward-thinking and groundbreaking legal reviews that are not typically encountered elsewhere.- We strive for a proactive legal team that collaborates from the outset with service organizations, allowing you to experience the growth and development of the company firsthand, unlike traditional risk management roles.- Our legal team comprises members with diverse backgrounds from financial holdings, securities firms, IT companies, law firms, and government bodies, fostering synergy through varied experiences. As Toss Payments is a relatively new organization, you can contribute to building the legal team from its inception rather than merely joining an established one.

Join Our Team!The Data Engineer (DataOps) at Toss Securities is part of the Data Infra Team within the Data Division.The Data Infra Team manages a big data infrastructure based on the Hadoop ecosystem and operates a log/search platform (Elasticsearch). We provide technical support for Kubernetes, which is widely used for data acquisition and various data operations. Additionally, we are developing a data analysis platform aimed at enhancing the company's data literacy. Curious About the Data Division?The Toss Securities Data Division strives to become the world's leading securities firm in data management by contributing to data technology, services, and data-driven decision making.A diverse range of data professionals collaborate closely and enjoy their work.We regularly host Tech Weekly sessions to share expertise. If you are interested and willing, you can learn from various roles and their methodologies. Your Responsibilities Include:Operating and Improving a Stable Log PlatformThe log platform (Elasticsearch) at Toss Securities stores logs generated from various services, making it a key tool for securities service operations.You will innovate to ensure real-time data acquisition and fast search capabilities, handling millions of records per second.Managing the Toss Securities Search PlatformWe utilize an Elasticsearch-based search platform to provide a variety of search services for stocks, news, and content.You will collaborate with search engineers to create an environment for accurate and rapid searches without delays.Operating and Supporting Data KubernetesVarious engineers (Data Engineers, ML Engineers, DW Engineers, Search Engineers) in the Data Division use dedicated data Kubernetes for data acquisition, serving, and internal operations.The Data Engineer (DataOps) will address issues arising from the Data Kubernetes infrastructure and continuously develop the system from a long-term perspective.You will also analyze the experiences of data engineers, focusing on process development, operation, and enhancement tasks. We Are Looking For Candidates Who:Have over 5 years of experience as a Data Engineer.Have experience using or operating search engines like Elasticsearch or Solr.Have worked with or managed distributed databases.Have experience operating Kubernetes + Istio-based infrastructure.Understand or have experience with the Hadoop ecosystem.Have built and managed metric systems in large-scale distributed environments.Have experience operating container orchestration services and CI/CD servers.Can automate engineering experiences within their current organization and improve processes or tools.Possess the ability to eliminate poor funnels in engineering experiences, as our organization focuses on collaborative achievement rather than direct supervision. Technologies We Use at Toss Securities:Python, Kotlin, Java, Spring Boot, Spring Cloud ConfigElasticsearch stack, Opensearch stack, Vector

Join Our Dynamic TeamAs a Data Engineer at Toss, you will be part of the Data Platform team.The Data Platform team operates within the Data Division, supporting and managing the data and platforms necessary for all Toss services.Our team comprises members with 2 to 18 years of experience from diverse backgrounds, including portals, banking, gaming, and startups.We encourage team members to pursue various interests and collaborate freely on skills and knowledge sharing.Your ResponsibilitiesDevelop and maintain stable and efficient data pipelines (ingestion, loading, streaming).Contribute to data-driven Toss services through real-time distributed processing of large datasets.Create and manage tools to ensure a reliable and efficient data experimentation and analysis environment for your colleagues.Develop various data service applications for data analysis and platform operation.Who You AreYou have experience in developing data pipelines for large-scale data processing (collection, processing, analysis).You are familiar with large-scale distributed systems (Hadoop, HBase, Kafka, Spark, Flink, etc.).You possess software development skills for data application development (Java, Scala, Python, etc.).You have intermediate or advanced programming skills (web/client/server programming).Experience in developing services related to recommendations/advertising/machine learning is a plus.Please Highlight These Experiences in Your ResumeDetail the projects you worked on, the technologies you used, and how you solved challenges, rather than just listing languages or frameworks.Experience using platforms similar to Toss is beneficial, but we prioritize growth potential and problem-solving abilities over specific technologies.Include any experience resolving critical failures while operating platforms or optimizing for performance and resource usage.Share experiences where you identified and resolved bugs in open-source software or contributed enhancements.Your Journey to Joining TossApplication submission > Technical interview > Cultural fit interview > Reference check > Compensation discussion > Final offer

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 You will be part of the DataOps Engineering Team under the Data Division at Toss Bank. Utilize the Hadoop Ecosystem and various open-source technologies to manage enterprise data reliably and efficiently. Establish standards for data workflows and develop and optimize data pipelines. Responsible for performance and stability optimization of open-source-based analytical platforms. Your Responsibilities Upon Joining Develop, operate, and automate the enterprise data pipelines. Efficiently process and optimize large data using open-source tools. Manage a large-scale Airflow cluster in an on-premises Kubernetes environment. Evaluate and implement new technologies like Iceberg and Trino for data platform enhancement. Ideal Candidate Profile Proficient in development within a Hadoop Ecosystem environment. Extensive experience with open-source pipeline tools such as Airflow, Nifi, Kafka, and Flink, along with strong problem-solving skills. Experience in developing data pipelines for large-scale data collection, processing, and analysis. Experience in analyzing, tuning, and optimizing execution plans for distributed processing engines like Spark is a plus. Beyond just using open-source tools, it would be great if you have experience in analyzing source code and contributing through patches and backporting. Resume Recommendations Please specify impactful projects you have worked on, particularly those involving the design and construction of ETL/streaming pipelines. If you have applied improvements in actual services, please quantify the results (omit sensitive information if necessary). Share experiences that go beyond mere development and construction to include troubleshooting, operations, and achieved results. Joining Toss Bank Application Submission > Job Interview > Cultural Fit Interview > Reference Check > Compensation Negotiation > Final Acceptance and Onboarding Important Notices If any false information is found in your resume or if disciplinary issues are confirmed during your employment history, hiring may be canceled. Hiring may be canceled for applicants who fall under the disqualifications specified in Toss Bank's employment regulations.

# About the Team- The Data Mart Platform Team is dedicated to building a standardized Data Warehouse for various Toss products, aiming to prevent data silos and enhance overall data maturity across the organization.- Responsibilities include enhancing centralized DW quality management processes, standard monitoring, integrating product data with the enterprise data mart, designing efficient pipelines, and creating standardized marts.- **Interested in learning more about Toss's Data Organization?** [→ *Toss Data Division Wiki*](https://recruit-data-division.oopy.io/) # Responsibilities- After completing an onboarding process to familiarize yourself with Toss's DW standards, you will work as part of the Data Mart Platform Team.- Maintain and manage an agile and manageable enterprise DW standard, taking responsibility for DW quality management from an enterprise perspective in collaboration with DAEs (Domain Analytics Engineers) from various product domains (development and execution of standard management monitoring).- Plan and execute systems and processes to enhance data reliability, improving table consistency, advancing DQ rules, and establishing health check metrics.- Develop enterprise-level marts, managing the integration of standard marts from different domains and ensuring efficient data pipeline improvements.- Identify and execute tasks to enhance data discoverability across the organization.- Develop a platform to measure data maturity across various Toss domains and initiate projects to enhance the productivity of DAEs.- The data development environment is based on Hadoop, Airflow, Python, and SQL (Impala). # Desired Qualifications- Understanding of database normalization and the fundamental characteristics of Data Warehouses (Subject-Oriented, Integrated, Non-Volatile, Time-Variant).- Ability to clearly define key concepts as a DW data modeler and propose efficient data structures based on diverse data perspectives.- High-level understanding of DW standard management and the capability to propose and lead improvement initiatives at the enterprise level.- Strong comprehension of data governance aspects, including data quality and compliance, with the ability to suggest actionable plans.- Proficient in SQL, capable of writing efficient and readable queries.- Basic Python skills (enough to work with Airflow) are acceptable, but understanding modules and PySpark code written by others is preferred.- Experience with large-scale data processing and designing metrics from an AARRR perspective is a plus. # Application Tips- Please specify any relevant experience with DW construction projects and mart design, detailing your contributions.- Mention specific challenges you have addressed regarding data maturity.- Outline your contributions and lessons learned while solving data-related issues. # Joining Toss - Application Submission > Job Interview > Cultural Fit Interview > Reference Check > Compensation Discussion > Final Acceptance and Onboarding # A Note to Future Colleagues > "Our team strives for better service every day." - I was drawn to the thrilling risks associated with financial data and saw that my growth could contribute to the company's success, which is why I joined Toss. - The most stressful aspect of my previous company was being led by predetermined objectives, but Toss offers more autonomy than I expected, along with a dedicated and ambitious team focusing on "better service every day."

About the Team You'll Join The Data Analyst at Toss Bank is integrated into both the squad and DA chapter, functioning within a matrix structure. At Toss Bank, teams are organized into squads, consisting of 6-8 professionals including Product Owners, Designers, Developers, and Analysts, working autonomously like a startup. Data Analysts in the Toss community belong to the DA chapter, which meets every Wednesday to share insights on data analysis topics. The DA chapter comprises team members with 1 to 12 years of experience from diverse backgrounds, including finance, corporate, gaming, and e-commerce. Key Responsibilities You'll Undertake As a Data Analyst at Toss Bank, you will define business problems through data and identify optimal solutions to effect real change. Drive Data-Driven Decision Making: Go beyond merely extracting requested data by defining the 'real problems' behind business needs and formulating hypotheses. Validate hypotheses using appropriate methodologies, such as causal inference and A/B testing, to derive actionable insights. Create Reliable and Efficient Analytical Environments: Focus on developing reusable data structures that team members can utilize repeatedly, moving beyond one-time analyses. Establish data standards through data mart design and consistency validation that everyone can trust. Work Smart with Technology: Utilize cutting-edge technologies (AI, LLM, etc.) to enhance efficiency in repetitive tasks, allowing for a focus on more significant problem-solving. Proactively adopt new analytical methods and tools that can elevate productivity without being constrained by past practices. We Seek a Candidate Who: Can discern the essence of problems and proactively propose solutions that consider the impact on our team, company strategy, and business objectives. Understands complex business logic and can translate this into coherent SQL queries for structured data. Is adept in deep data analysis using tools like Python/R, capable of accurately interpreting experimental results based on statistical knowledge. Can communicate complex analytical findings in simple terms that non-experts can understand and persuade. Preferred Experience: Experience in constructing dashboards and analytical environments using tools such as Tableau or Amplitude is a plus. Prior involvement in service planning and log design stages is advantageous. Experience in leveraging new technologies (like AI) to enhance work processes is preferred. Resume Tips: Detail impactful projects you have worked on. Showcase the process of problem definition, hypothesis formulation, experimental design, validation, and results. Mention any experiences that led to deep user understanding through data analysis and actionable insights. Check if you have extensively utilized mobile service data analysis methods (LTV, AARRR, Cohort, Funnel, etc.).

Join our dynamic team at Toss Payments as an Inbound Sales Assistant! In this role, you will be the first point of contact for our customers, providing exceptional service and support. You will be responsible for assisting customers with their inquiries, guiding them through our services, and ensuring a seamless experience. If you are passionate about sales and customer service, we want to hear from you!

About the Team You'll Join* As a Cloud Engineer (Cloud Platform Development) at Toss, you will be part of the Cloud Engineering Team, responsible for addressing and resolving issues within the Toss service infrastructure through a Cloud Native approach.* Joining this position means becoming a vital member of the Cloud Engineering Team.* Our goal is to optimize the infrastructure for Toss team members, ensuring a resilient system capable of handling large-scale traffic and preparing for potential failures.Your Responsibilities* Beyond utilizing cloud services, you will design, operate, and enhance them directly.* Analyze the infrastructure from a Cloud Engineer's perspective, providing solutions based on Kubernetes and OpenStack.* Implement features for performance optimization and operational automation of virtual infrastructure.* Develop monitoring, metering, and alerting systems to support the stability and efficiency of services at the virtual infrastructure level.* Adapt and improve open-source software for an in-house environment.* Build technical trust in cloud adoption and provide training and guidance to development and operations teams for seamless cloud utilization.We Want to Work With Someone Who* Is proficient in at least one programming language: Python, Golang, or C.* Understands REST APIs and database transactions.* Has knowledge and experience with OS, network, and storage technologies.* Is passionate about learning new technologies and actively applying them in operational environments.* Has a deep understanding of key OpenStack components such as Nova, Neutron, Cinder, Keystone, and experience in performance optimization.* Has experience in service operation and deployment using Kubernetes.A Note for Potential Colleagues"You will have the opportunity to experience cloud platform serving based on the latest trends of CI/CD and TDD."* Our team does not just 'write code.' We lead from problem recognition to infrastructure architecting, allowing you to experience the entire process of feature development, operation, and deployment automation. We constantly experiment with and apply new technologies, aiming for the highest level of operational automation and testing environments.* If you want to experience everything about cloud-native, discover a new career as an infrastructure developer, or are eager to learn more about infrastructure technology, we welcome you!