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Owns fintech products at Toss, setting goals, defining metrics, and driving experiments to improve user growth, retention, and monetization.
Leads technical product development for offline payment innovation, collaborating with engineers and designers to define and execute strategies for POS, terminal, and customer-facing solutions in retail. Focuses on scaling infrastructure, optimizing operations, and driving growth through data-driven decisions and cross-functional problem-solving.
A Technical Product Owner at Toss Commerce drives the design and execution of AI-driven search, recommendation, and ad systems within a fintech super-app, optimizing customer discovery and seller performance while balancing business metrics like CTR, CVR, and system latency.
UX Researcher at Toss Place studies offline retail pain points, designs research to shape product strategy, and collaborates with teams to turn user insights into tangible improvements for POS, payment terminals, and table-ordering systems.
UX Researcher at Toss designs and conducts user research to improve digital banking products, using methods like interviews and usability tests to inform product strategy.
Financial Systems Engineer responsible for managing and processing large-scale transaction data, developing and maintaining systems for data collection, aggregation, and processing, and ensuring data integrity and compliance.
HR Business Partner for Toss Securities, supporting global expansion by designing and implementing HR policies for overseas subsidiaries and collaborating with leadership.
Designs intuitive global financial apps and experiences for Toss, from UX research to pixel-perfect UI, across payments, remittances, and shopping.
Performs regular and ad-hoc security assessments, penetration testing, and vulnerability analysis for a digital bank’s infrastructure, systems, and applications using Python, Django, and cloud-native tools.
Oversee global information security policies, compliance, and risk management for a fintech company expanding into new markets, ensuring regulatory adherence and secure operations across jurisdictions.
Designs, builds, and operates scalable data pipelines for AI/ML products in banking, ensuring reliable batch processing, feature engineering, and model inference workflows using distributed systems like Spark and Airflow.
Build and maintain Toss Securities' data warehouse and ETL pipelines using Hadoop, Spark, and Airflow to enable efficient data processing and analytics for a growing fintech platform.
Financial Analyst at Toss analyzes mobile user financial behavior data to generate insights, create reports, and optimize business metrics for data-driven decision-making.
Designs high-quality visuals for Toss’s banking and fintech products, from brand identity to mobile UI, using prototyping and creative tools to elevate user experience.
Design Staff at Toss shapes the user experience for Korea’s leading fintech app, setting design strategy and standards across financial services like payments and banking.
Builds and maintains Toss’s enterprise data warehouse, automating pipelines and data marts with Hadoop and open-source tools while collaborating with analysts and ML teams.
Builds and maintains a global financial data platform for securities, processing real-time market data with AI/ML pipelines using Kafka, Spark, and Iceberg.
Designs, builds, and maintains network infrastructure for a leading fintech company, ensuring secure and high-performance systems for payments and financial services.
Designs and maintains UI systems and components for Toss’s POS, payment terminals, and multi-platform products, ensuring visual consistency and high usability across devices.
Build and maintain server-side systems powering Toss’s fintech platform, handling payments, banking, and user transactions at scale.
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