Himalayas logo
EZ
Open to opportunities

Ethan Zhou

@ethanzhou

Senior software engineer specializing in scalable systems and AI-enabled products.

United States
Message

What I'm looking for

I am looking for a role building scalable systems and AI-driven products where I can lead engineering efforts, mentor teams, and improve reliability and delivery velocity.

I am a senior software engineer with deep experience building scalable, production-grade systems and AI-enabled products. I designed and led full-stack development of a Copilot product using React, TypeScript, and Java microservices, engineered RAG pipelines with GPT-4 and Qdrant, and integrated OpenAI and Gemini models into marketing tools to accelerate personalized content generation.

Previously, I built real-time market data systems in C++ and Redis that handled millions of updates per second with sub-5 ms latency, migrated serialization to FlatBuffers to cut message size and parsing time significantly, and implemented Kafka-based publish/subscribe middleware to support massive fan-out. I also containerized and automated microservice deployments with Docker and Kubernetes and created monitoring dashboards that improved incident response and uptime.

I consistently focus on performance, reliability, and developer productivity: I drove CI/CD standardization, mentored engineers, rolled out platform improvements across teams, and co-launched marketplaces and libraries that reduced feature delivery time and increased adoption. I seek opportunities to deliver high-impact systems and AI-driven products at scale.

Experience

Work history, roles, and key accomplishments

HubSpot logoHU
Current

Senior Software Engineer

Jan 2024 - Present (1 year 10 months)

Led full-stack development of HubSpot Breeze Copilot using React, TypeScript, and Java microservices, streamlining CRM workflows for 250K+ users and reducing hallucination rates by 40% via RAG pipelines with GPT-4 and Qdrant.

Bloomberg logoBL

Software Engineer

Aug 2018 - Nov 2023 (5 years 3 months)

Built real-time market data systems in C++ and Redis handling millions of updates/sec with <5ms latency and zero data loss; migrated serialization to FlatBuffers reducing message size 70% and improving parsing 10×.

Education

Degrees, certifications, and relevant coursework

Bowdoin College logoBC

Bowdoin College

Bachelor of Arts, Computer Science

2014 - 2018

Completed a Bachelor of Arts in Computer Science with coursework and projects focused on systems programming, distributed systems, and performance optimization.

Tech stack

Software and tools used professionally

Find your dream job

Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!

Sign up
Himalayas profile for an example user named Frankie Sullivan
Ethan Zhou - Senior Software Engineer - HubSpot | Himalayas