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Hi, I’m Ted Youngsoon Lee, a staff-level Go backend engineer with 20+ years building billing, payments, and platform services at scale. I’m Go-first, Kubernetes-native, and comfortable with on-call ownership for critical production services. I’ve led a service-by-service migration from legacy Java to Go with rollback strategies and guided platform teams through four A+ product launches. Most recently I’ve designed backend microservices for gaming platforms, built serverless data pipelines on AWS, and implemented gRPC inter-service communication alongside RESTful endpoints. I thrive on building scalable, observable systems and collaborating across teams to drive data-driven product decisions.…Hi, I’m Ted Youngsoon Lee, a staff-level Go backend engineer with 20+ years building billing, payments, and platform services at scale. I’m Go-first, Kubernetes-native, and comfortable with on-call ownership for critical production services. I’ve led a service-by-service migration from legacy Java to Go with rollback strategies and guided platform teams through four A+ product launches. Most recently I’ve designed backend microservices for gaming platforms, built serverless data pipelines on AWS, and implemented gRPC inter-service communication alongside RESTful endpoints. I thrive on building scalable, observable systems and collaborating across teams to drive data-driven product decisions.

Ted Youngsoon Lee

Back-End Developer, Web Developer, Programmer, +1

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Hi, I’m Ted Youngsoon Lee, a staff-level Go backend engineer with 20+ years building billing, payments, and platform services at scale. I’m Go-first, Kubernetes-native, and comfortable with on-call ownership for critical production services. I’ve led a service-by-service migration from legacy Java to Go with rollback strategies and guided platform teams through four A+ product launches. Most recently I’ve designed backend microservices for gaming platforms, built serverless data pipelines on AWS, and implemented gRPC inter-service communication alongside RESTful endpoints. I thrive on building scalable, observable systems and collaborating across teams to drive data-driven product decisions.…Hi, I’m Ted Youngsoon Lee, a staff-level Go backend engineer with 20+ years building billing, payments, and platform services at scale. I’m Go-first, Kubernetes-native, and comfortable with on-call ownership for critical production services. I’ve led a service-by-service migration from legacy Java to Go with rollback strategies and guided platform teams through four A+ product launches. Most recently I’ve designed backend microservices for gaming platforms, built serverless data pipelines on AWS, and implemented gRPC inter-service communication alongside RESTful endpoints. I thrive on building scalable, observable systems and collaborating across teams to drive data-driven product decisions.

Available to hire

Hi, I’m Ted Youngsoon Lee, a staff-level Go backend engineer with 20+ years building billing, payments, and platform services at scale. I’m Go-first, Kubernetes-native, and comfortable with on-call ownership for critical production services. I’ve led a service-by-service migration from legacy Java to Go with rollback strategies and guided platform teams through four A+ product launches.

Most recently I’ve designed backend microservices for gaming platforms, built serverless data pipelines on AWS, and implemented gRPC inter-service communication alongside RESTful endpoints. I thrive on building scalable, observable systems and collaborating across teams to drive data-driven product decisions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Japanese

Advanced

Korean

Advanced

Work Experience

Senior Software Engineer at ZTX Foundation

November 1, 2022 - Present

Designed and built 6+ backend microservices (avatar, item, land, inventory, trade) for a global metaverse game platform communicating with web3 and blockchain. Architected event-driven serverless backend using API Gateway, Lambda, SQS, and DynamoDB — reduced operational overhead and scaled automatically with player demand. Built data pipeline platform for game log analysis using DynamoDB, Redshift, and AWS serverless components, enabling data-driven product decisions. Implemented gRPC inter-service communication for low-latency internal APIs alongside RESTful public endpoints.

Senior Software Engineer at Naddic Games

September 1, 2018 - November 1, 2022

Built and owned Billing Service end-to-end for a global game platform — handled real-money transactions, refunds, reconciliation, and fraud checks with idempotency and retry semantics. Built backend microservices stack in Go alongside Billing: Game Service, Auth Service, Chat Service, Item Service — REST + gRPC inter-service APIs. Operated production systems on AWS EKS (Kubernetes) with serverless components (Lambda, SQS), on-call for live global game services. Designed and operated data pipeline platform for player behavior and business metrics at scale.

Senior Software Engineer at OGPlanet

July 1, 2013 - January 1, 2018

Led legacy Java-to-Go migration — service-by-service, with rollback strategies, feature flags, and incremental cutover to keep the game publishing stack live throughout. Improved development velocity and system performance post-migration; designed API versioning and backward-compatible contracts for consumer services. Built advanced management website that accelerated user claim resolution and generated business data reports, directly contributing to increased sales. Designed DB schemas and managed MSSQL, PostgreSQL, and Redis for the game microservice platform.

Senior Software Engineer / Platform Team Lead at NCSoft

January 1, 2005 - November 1, 2012

Designed and shipped an integrated payment platform for game transactions — integrated third-party payment providers, eliminated purchase-flow friction, and drove the company's top sales year. Led the platform team at the Japan branch — mentored engineers, drove architecture decisions, and coordinated cross-team delivery. Successfully launched A+ titles: Guild Wars, AION, Blade & Soul, Perfect World — owned billing, item shop, and platform services for each launch.