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Hi, I’m Guozhong Wu, a Senior Software Engineer with a track record of building scalable backend systems and high-availability SaaS platforms. I’ve architected Node.js RESTful APIs, designed robust data pipelines with PostgreSQL, MongoDB, and Redis, and led CI/CD deployments on AWS to deliver reliable, secure software for tens of thousands of users. I enjoy collaborating with cross-functional teams to turn complex requirements into maintainable, production-ready solutions. I thrive in fast-paced environments and prioritize performance, security, and reliability. I’m passionate about mentoring teammates, improving engineering practices, and delivering value quickly while maintaining code quality and system resilience.…Hi, I’m Guozhong Wu, a Senior Software Engineer with a track record of building scalable backend systems and high-availability SaaS platforms. I’ve architected Node.js RESTful APIs, designed robust data pipelines with PostgreSQL, MongoDB, and Redis, and led CI/CD deployments on AWS to deliver reliable, secure software for tens of thousands of users. I enjoy collaborating with cross-functional teams to turn complex requirements into maintainable, production-ready solutions. I thrive in fast-paced environments and prioritize performance, security, and reliability. I’m passionate about mentoring teammates, improving engineering practices, and delivering value quickly while maintaining code quality and system resilience.

Guozhong Wu

Back-End Developer, Full Stack Developer, App Developer, +1

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Hi, I’m Guozhong Wu, a Senior Software Engineer with a track record of building scalable backend systems and high-availability SaaS platforms. I’ve architected Node.js RESTful APIs, designed robust data pipelines with PostgreSQL, MongoDB, and Redis, and led CI/CD deployments on AWS to deliver reliable, secure software for tens of thousands of users. I enjoy collaborating with cross-functional teams to turn complex requirements into maintainable, production-ready solutions. I thrive in fast-paced environments and prioritize performance, security, and reliability. I’m passionate about mentoring teammates, improving engineering practices, and delivering value quickly while maintaining code quality and system resilience.…Hi, I’m Guozhong Wu, a Senior Software Engineer with a track record of building scalable backend systems and high-availability SaaS platforms. I’ve architected Node.js RESTful APIs, designed robust data pipelines with PostgreSQL, MongoDB, and Redis, and led CI/CD deployments on AWS to deliver reliable, secure software for tens of thousands of users. I enjoy collaborating with cross-functional teams to turn complex requirements into maintainable, production-ready solutions. I thrive in fast-paced environments and prioritize performance, security, and reliability. I’m passionate about mentoring teammates, improving engineering practices, and delivering value quickly while maintaining code quality and system resilience.

Available to hire

Hi, I’m Guozhong Wu, a Senior Software Engineer with a track record of building scalable backend systems and high-availability SaaS platforms. I’ve architected Node.js RESTful APIs, designed robust data pipelines with PostgreSQL, MongoDB, and Redis, and led CI/CD deployments on AWS to deliver reliable, secure software for tens of thousands of users. I enjoy collaborating with cross-functional teams to turn complex requirements into maintainable, production-ready solutions.

I thrive in fast-paced environments and prioritize performance, security, and reliability. I’m passionate about mentoring teammates, improving engineering practices, and delivering value quickly while maintaining code quality and system resilience.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Chinese

Fluent

Work Experience

Senior Software Engineer at AVROX SOLUTIONS

March 1, 2024 - Present

Architected and delivered scalable RESTful APIs using Node.js and PostgreSQL, supporting multi-tenant SaaS platforms with 50k+ monthly active users. Optimized query performance and introduced Redis caching, reducing API response time by 40% and lowering database load by 35%. Implemented JWT-based authentication, RBAC authorization, and strict request validation, eliminating critical security vulnerabilities. Designed CI/CD pipelines on AWS, enabling zero-downtime deployments and reducing release cycles by 60%. Refactored legacy services into modular, testable backend components, improving maintainability and deployment frequency.

Senior Software Engineer at Canteen Hub

December 1, 2021 - Present

Directed backend architecture using Node.js, achieving improved API throughput to support ongoing expansion and integration across distributed systems. Structured scalable API design and data handling to support growth, with emphasis on reliability and maintainability.

Senior Software Engineer at Bolt Tech

August 1, 2019 - December 1, 2021

Built high-availability Node.js APIs powering dynamic e-commerce integrations across distributed production environments. Structured PostgreSQL schemas supporting transactional data with strict consistency guarantees. Streamlined API performance through endpoint profiling and query optimization, improving response stability under peak traffic. Introduced Redis caching and data validation layers, ensuring PCI-aligned data handling. Collaborated with frontend teams during overlap hours to deliver production-ready APIs aligned with product requirements.

Senior Software Engineer at VSKsoft

September 1, 2017 - August 1, 2019

Delivered Node.js backend services supporting distributed system utilities and performance optimization tools. Designed MongoDB data persistence with optimized indexing and aggregation pipelines. Strengthened API integrity through structured validation middleware and secure access controls. Delivered robust ETL pipelines for reporting. Implemented role-based access controls and secure authentication practices.