Po-Hsuan (Jason) Hsieh is a Hands-on Software Engineer and Technical Program Manager with a strong software engineering background and an AI-powered, LLM-driven mindset, delivering platform-scale and distributed systems across cloud DevOps and enterprise environments at AdTech, FinTech.

Experience

2024 — NowViant TechnologySoftware Engineer

2024 — Now

California, United States

Owned and architected the end-to-end Ads Creative Approval platform, serving as the gating system for Google, Xandr, and Comcast FreeWheel (10K+ creatives/day) on DSP; cut campaign launch time and creatives approval time by driving phased delivery and rollout and building a scalable event-driven AWS architecture (API Gateway, SQS, Lambda) that processed 1K+ batch events per call and reduced manual operations

Led end-to-end delivery of 3+ cross-functional infrastructure programs in AdTech platform (structured logging, foreign exchange API automation, third-party segment) with Java, Go, AI, LLM, Agentic, write functional, technical specifications, coordinating scope and milestones with Security, Product, RD, QA, Cloud stakeholders

2020 — 2023IBMApplication Consultant

2020 — 2023

Taipei City, Taiwan

Technical Program managed delivery of 2+ cloud-native solutions for Fortune 500 fintech, aligning engineers, architects, PM and client stakeholders across business and technical teams; proposed and implemented platform architecture on Azure with microservices and DevOps CI/CD best practices

Led from design through release development and architecture of a high-availability Short Message Service platform on Azure Agent and RedHat OpenShift, utilizing Java (Spring Boot), JavaScript (React), HTML and SQL Server; supporting 100K+ daily ETL transactions with strong reliability and quality

Managed release lifecycle and XFN alignment for 30+ production-grade APIs powering a national railway reservation platform (160K+ daily users), driving delivery against 99.5% SLA target with stable rollouts

Executed 3+ client rollouts, training sessions, mitigating delivery risks, enabled successful adoption

2019 — 2020MicrosoftTechnical Program Intern

2019 — 2020

Taipei City, Taiwan

Drove the development and data pipeline of Asia Pacific’s largest Health Information System program across 5+ engineering teams, designing 10+ data migration and reporting procedures; collaborated with enterprise clients to ensure system integration, regulatory compliance, and 100% data integrity, accuracy leveraging C#, ASP.NET, Azure DevOps, SQL

Directed a 10-person team and hosted technical workshops (Azure Custom Vision, Power BI) for 300+ participants, representing Microsoft at Cybersecurity Conference, Intel Workshop