# Sage S. > Product Manager | Payments & Platform | MBA · CFA Level I Location: Los Angeles, California, United States Profile: https://flows.cv/sages Product Manager with 6+ years of experience, including 3+ years of product ownership across SaaS and platform products. I work at the intersection of system complexity and user-facing product decisions, taking features from ideation through ship by defining specs, running structured experiments, and iterating with engineering and cross-functional teams. My experience spans cross-border payments, API-driven platform integrations, pricing and monetization, and 0-to-1 mobile app development, often working on system-level problems such as async flows, reconciliation, and multi-market expansion. Leveraging an MBA and CFA Level I, I bring financial rigor and technical fluency to product decisions across fintech, SaaS, and platform environments. ## Work Experience ### Associate Product Manager II @ Epson America Inc. Jan 2024 – Present | Los Alamitos, CA I own product across the full stack, shipping customer-facing web and app features while leading backend system integrations and internal tooling. I define requirements, run structured experiments to validate and iterate on new capabilities, and lead API-driven integrations across external and internal systems. Working cross-functionally with engineering, sales, and operations, I focus on driving attach rate, pricing optimization, and service revenue growth. ### Product Manager @ Era Jan 2023 – Jan 2024 | Los Angeles, California, United States • Owned the 0-to-1 roadmap for a companion app by balancing rapid MVP delivery with long-term scalability; defined MVP scope and led cross-functional alignment to drive seamless ecosystem integration and retention growth. • Validated product-market fit through 100+ interviews, applying strong user empathy to synthesize qualitative insights into key user needs; shaped findings into PRDs and delivered MVP ahead of schedule, saving ~$100k in runway. ### Product Management MBA Intern @ Epson America Inc. Jan 2023 – Jan 2023 | Los Alamitos, California, United States • Defined product vision for a SaaS solution, translating user needs into AI-driven features, validating feasibility via POC, and outlining a prioritized roadmap; synthesized findings into strategic narratives that secured executive buy-in. • Built a financial model with scenario analyses to quantify revenue impact and cost efficiency for proposed SaaS features; aligned inputs with Product and Finance to drive informed prioritization and guide MVP resource allocation. ### Product Manager @ Echo Marketing Jan 2021 – Jan 2022 | Seoul • Drove cross-border payment rollout for the US and Japan, localizing checkout, payment methods, and integrating FX display in line with regulations; enabled scalable financial operations, robust settlement, and clean reconciliation. • Led data-driven personalization initiatives by partnering with engineering and data science to develop recommendation and ranking logic; leveraged segment-specific user behavior analytics to drive a double-digit CTR lift. • Spearheaded a 0-to-1 mobile app launch by owning MVP scope, migration strategy, and end-to-end onboarding; drove 12% growth in DAU and early retention by streamlining the web-to-app transition and simplifying onboarding flows. • Scaled e-commerce platform from the US to Japan, leading market research, go-to-market strategy and localization across customer experience; accelerated padoption and surpassed the market penetration target by 30%. ### Overseas Sales @ Shinsegae Intercos Korea Jan 2019 – Jan 2021 | Gyeonggi, South Korea • Owned GTM and sales strategy for European and Asian markets; conducted segment research, shaped proposals and pricing, and secured B2B programs driving multi-million-dollar revenue and 10%+ YoY overseas sales growth. • Spearheaded end-to-end product development by translating customer needs and legal requirements into specifications and prioritizing them within technical and budget constraints; delivered 20+ products across concurrent projects. ### Overseas Sales Intern @ Shinsegae Intercos Korea Jan 2019 – Jan 2019 | Pangyo ## Education ### Master of Business Administration - MBA UCLA Anderson School of Management ### Bachelor of Business Administration - BBA in Hospitality Administration/Management Kyung Hee University ## Contact & Social - LinkedIn: https://linkedin.com/in/sage-seo - Portfolio: https://sageseopm.com/ - Portfolio: https://sageseopm.com --- Source: https://flows.cv/sages JSON Resume: https://flows.cv/sages/resume.json Last updated: 2026-04-18