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Hi, I’m Hao Tian Zhang, a Senior Software Engineer at Amazon who thrives on taming the chaos of large-scale systems. I live for turning unclear requirements into solid, reliable software and empowering teams to ship fast while keeping quality high. I’m hands-on, collaborative, and driven by the joy of turning tough problems into elegant solutions that scale. Curiosity guides my work, especially around AI integrations in production environments. I enjoy exploring new tech, balancing speed and robustness, and mentoring peers to improve maintainability and resilience across systems.…Hi, I’m Hao Tian Zhang, a Senior Software Engineer at Amazon who thrives on taming the chaos of large-scale systems. I live for turning unclear requirements into solid, reliable software and empowering teams to ship fast while keeping quality high. I’m hands-on, collaborative, and driven by the joy of turning tough problems into elegant solutions that scale. Curiosity guides my work, especially around AI integrations in production environments. I enjoy exploring new tech, balancing speed and robustness, and mentoring peers to improve maintainability and resilience across systems.

Hao Tian Zhang

Full Stack Developer, AI Engineer, DevOps Developer, +6

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Hi, I’m Hao Tian Zhang, a Senior Software Engineer at Amazon who thrives on taming the chaos of large-scale systems. I live for turning unclear requirements into solid, reliable software and empowering teams to ship fast while keeping quality high. I’m hands-on, collaborative, and driven by the joy of turning tough problems into elegant solutions that scale. Curiosity guides my work, especially around AI integrations in production environments. I enjoy exploring new tech, balancing speed and robustness, and mentoring peers to improve maintainability and resilience across systems.…Hi, I’m Hao Tian Zhang, a Senior Software Engineer at Amazon who thrives on taming the chaos of large-scale systems. I live for turning unclear requirements into solid, reliable software and empowering teams to ship fast while keeping quality high. I’m hands-on, collaborative, and driven by the joy of turning tough problems into elegant solutions that scale. Curiosity guides my work, especially around AI integrations in production environments. I enjoy exploring new tech, balancing speed and robustness, and mentoring peers to improve maintainability and resilience across systems.

Available to hire

Hi, I’m Hao Tian Zhang, a Senior Software Engineer at Amazon who thrives on taming the chaos of large-scale systems. I live for turning unclear requirements into solid, reliable software and empowering teams to ship fast while keeping quality high. I’m hands-on, collaborative, and driven by the joy of turning tough problems into elegant solutions that scale.

Curiosity guides my work, especially around AI integrations in production environments. I enjoy exploring new tech, balancing speed and robustness, and mentoring peers to improve maintainability and resilience across systems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

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Expert

Expert

Expert

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Expert

Expert

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Expert

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Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at Amazon

April 1, 2021 - Present

Led production incidents and post-mortems, reducing downtime by 22% through automated failover mechanisms in AWS Lambda; refactored legacy payment orchestration to improve reliability; integrated AI-based fraud detection models without disrupting live traffic; migrated monolithic services to microservices to enable scalable, fault-tolerant systems; optimized Postgres SQL queries for order lifecycle and inventory workflows.

Senior Development Engineer II at Amazon

October 1, 2018 - March 1, 2021

Developed real-time inventory routing algorithms in Java, reducing warehousing inefficiencies by 13% across fulfillment centers; fixed operational optimization bugs in high-traffic environments with deep dives into Spring Boot services; collaborated with product managers to clarify AI-driven demand forecasting specs and iterated prototypes quickly; implemented stability frameworks for warehouse orchestration using Docker containers and Kubernetes clusters to handle variable loads; cleaned legacy code and added unit tests to improve reliability; integrated machine learning models for route prediction balancing accuracy with response time.

Senior Development Engineer I at Amazon

November 1, 2015 - September 1, 2018

Built dynamic pricing engines using Python and SQL, supporting promotion calculations for millions of products; debugged discount eligibility logic during promo campaigns, resolving issues that impacted revenue; refactored pricing modules to handle scaling, improving throughput by 25%; partnered with support teams to address unclear catalog integration requirements; optimized DynamoDB schemas for high-read scenarios and improved price updates.