Open to opportunities

Gary Chang

@garychang

Message

I’m a senior software engineer building scalable TypeScript/Node systems and operational platforms.

United States

Message

What I'm looking for

I’m looking to build and own scalable microservices and backend APIs, while shipping reliable full-stack operational tools. I want a fast-moving team where I can improve system design, reduce technical debt, and strengthen production reliability end-to-end.

I’m a Senior Software Engineer with 10+ years of experience building scalable production systems and full-stack platforms using TypeScript, Node.js, and modern cloud architectures. I own systems end-to-end—from architecture and development through deployment and production reliability.

I design microservices, backend APIs, and asynchronous data workflows, and I build operational interfaces that help teams manage complex workflows. At System1, I architected RESTful APIs and microservices, implemented Redis queue processing with BullMQ, optimized PostgreSQL and Redis-based performance, and delivered internal dashboards with React and Next.js.

I’m known for improving system design, reducing technical debt, and strengthening engineering standards through architecture reviews and code reviews. I bring a collaborative mindset—translating complex product requirements into reliable, maintainable solutions and mentoring engineers as I go.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

System1

Jun 2019 - Present (6 years 10 months)

Designed and developed TypeScript/Node.js backend services using NestJS to support scalable production systems and internal operational tools. Built React/Next.js dashboards, RESTful microservices, and asynchronous processing pipelines (Redis queues and BullMQ), and led architecture/code review practices to improve reliability and maintainability.

TypeScript Node NestJS Microservices REST APIs React Next.js PostgreSQL Redis BullMQ

Senior Software Engineer

1FanAI Inc.

May 2018 - May 2019 (1 year)

Built backend services and distributed integrations using Node.js and TypeScript to support high-volume analytics platforms. Designed APIs and data workflows with PostgreSQL and Redis caching, and implemented automated CI/CD pipelines and containerized deployment workflows.

Node TypeScript REST APIs Distributed Systems PostgreSQL Redis CI CD Docker Workflows

Software Engineer

Blackwood Seven US, Inc.

May 2017 - Dec 2017 (7 months)

Developed backend services and REST APIs for analytics optimization platforms. Designed relational and NoSQL data models for large-scale processing workflows and contributed to debugging, refactoring, and reliability improvements.

JavaScript REST APIs Data Modeling Relational Databases NoSQL Debugging Refactoring Reliability Analytics

Software Engineer

ACTV8me

Apr 2016 - Apr 2017 (1 year)

Built backend services and integrations supporting content distribution platforms. Implemented API endpoints and data workflows for user-facing applications while collaborating with cross-functional teams in Agile development cycles.

Backend Services API Development Workflows Integration Agile Scrum Cross Functional Collaboration

Software Engineer

Tradesy

Jul 2015 - Mar 2016 (8 months)

Developed backend services for an e-commerce platform using JavaScript and relational databases. Implemented APIs and transactional backend logic, and participated in code reviews and Agile development processes.

JavaScript Backend Development REST APIs Relational Databases Code Review Agile Scrum