Open to opportunities

Sachula Chen

@sachulachen

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Backend engineer specializing in Java, cloud infrastructure, and platform reliability.

China

Message

What I'm looking for

I seek a backend/platform role where I can lead infrastructure reliability, automate workflows, drive cross-team improvements, and grow in cloud-native systems.

I am a backend engineer with seven years of experience focused on Java development and AWS cloud infrastructure, delivering platform work for business services, data governance, and CI/CD optimization. I lead large-scale migrations, rapid infrastructure rollouts, and reliability improvements that reduced onboarding time and cleared billions of historical rows while maintaining service stability.

I automate workflows to boost engineering efficiency, build standardized solutions and tooling, and drive cross-team technical support. My work emphasizes meticulous processes, security compliance, and measurable results—such as migrating 100+ services, enabling 150+ services onboarding in new regions, and fixing coverage detection for 80+ services.

Experience

Work history, roles, and key accomplishments

Staff Backend Engineer

Coupang

Apr 2021 - Oct 2025 (4 years 6 months)

Led migration and infrastructure rollout for Eats platform, migrating 100+ services to new AWS accounts and enabling 150+ services to onboard a new region within two weeks; implemented data governance clearing ~4 billion rows and improved service stability via thread-pool isolation and HA Jenkins upgrades.

Java Spring Boot AWS Terraform Kubernetes Kafka MySQL Redis CI CD Automation

Java Development Engineer

Meituan

Nov 2019 - Jan 2021 (1 year 2 months)

Developed and optimized core dispatch and idle-driver guide systems, improving order assignment efficiency via city-wide driver-passenger matrix processing and enhancing stability with circuit breakers and stress testing.

Java Spring Boot Distributed Systems Message Queues Elasticsearch Performance Optimization Monitoring Debugging

Java Development Engineer

Ziroom

Apr 2018 - Nov 2019 (1 year 7 months)

Contributed to an Accounting Platform and financial system integrations, delivering core modules (settlement, invoices) and improving performance via async processing and local caching; also implemented frontend pages for financial tools.