「Hi」, my name is
Terris Zhao
Full-Stack Engineer
About Me
Full-Stack Engineer with 8+ years building scalable backend services and modern web interfaces for high-traffic, business-critical systems.
Delivers end-to-end features from architecture and API design through deployment, monitoring, and production support.
Skills & Technologies
Work Experience
Full-Stack Engineer
Beijing Xinyuan Lab Technology Co., Ltd. · Beijing, China
Led architecture and delivery for an LLM-powered SaaS interview platform (RAG + evaluation).
- Owned end-to-end delivery from requirements → design → test → deploy across key features
- Designed RAG architecture to automate evaluation and generate contextual feedback
- Built full-stack features: Next.js + HeroUI; Java/Spring Cloud + Redis/PostgreSQL
- Ran prod/staging: CI/CD, security hardening, backups, centralized monitoring/logging
merge: Apr 2023 - Jun 2024
Full-Stack Engineer
Beijing Xinyuan Lab Technology Co., Ltd. · Beijing, China
Led architecture and delivery for an LLM-powered SaaS interview platform (RAG + evaluation).
- Owned end-to-end delivery from requirements → design → test → deploy across key features
- Designed RAG architecture to automate evaluation and generate contextual feedback
- Built full-stack features: Next.js + HeroUI; Java/Spring Cloud + Redis/PostgreSQL
- Ran prod/staging: CI/CD, security hardening, backups, centralized monitoring/logging
merge: Sep 2019 - Feb 2023
Senior Java Developer
Beijing Sirius Technology Co., Ltd. · Beijing, China
Led core module optimization for an interview platform supporting 1,000+ concurrent users.
- Contributed to system/service architecture for modularity and long-term scalability
- Optimized core Interview System for 1,000+ concurrency; improved peak stability/throughput
- Maintained Spring Cloud infra (discovery/monitoring/circuit breaking); -27% prod failures
- Fixed critical perf/stability issues (GC, locks, restarts) via async & concurrency designs
- Delivered key tooling/features incl. risk isolation & Tencent Meeting (2.3M+ sessions); awards
Senior Java Developer
Beijing Sirius Technology Co., Ltd. · Beijing, China
Led core module optimization for an interview platform supporting 1,000+ concurrent users.
- Contributed to system/service architecture for modularity and long-term scalability
- Optimized core Interview System for 1,000+ concurrency; improved peak stability/throughput
- Maintained Spring Cloud infra (discovery/monitoring/circuit breaking); -27% prod failures
- Fixed critical perf/stability issues (GC, locks, restarts) via async & concurrency designs
- Delivered key tooling/features incl. risk isolation & Tencent Meeting (2.3M+ sessions); awards
Java Backend Engineer
Tongcheng Travel Holdings Limited · Beijing, China
Owned core order + dispatch flows for a ride-hailing platform from creation to fulfillment.
- Owned order/dispatch flows and production stability for critical business paths
- Built full order lifecycle: quotation, dispatch, completion, settlement; improved traceability
- Rebuilt invoicing to support batch ops and auto settlement; improved efficiency/accuracy
merge: Aug 2017 - Jul 2019
Java Backend Engineer
Tongcheng Travel Holdings Limited · Beijing, China
Owned core order + dispatch flows for a ride-hailing platform from creation to fulfillment.
- Owned order/dispatch flows and production stability for critical business paths
- Built full order lifecycle: quotation, dispatch, completion, settlement; improved traceability
- Rebuilt invoicing to support batch ops and auto settlement; improved efficiency/accuracy
Featured Projects
Get In Touch
I am currently open to new opportunities and would love to hear from you. Whether you have a question, want to discuss a project, or just want to say hi — feel free to reach out!