Open to opportunities

Harry Zhang

@harryzhang

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Senior Full Stack Developer specializing in scalable backend systems and high-performance frontends.

United States

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What I'm looking for

I seek senior engineering roles building scalable, low-latency systems with strong DevOps practices, cross-functional collaboration, and opportunities to apply ML/AI for product impact.

I am a Senior Full Stack Developer with extensive experience building scalable backend services and high-performance UIs using Node.js, NestJS, React, and Next.js. I design and optimize cloud-native systems on AWS/Azure, implement event-driven microservices, and deliver measurable improvements in latency, throughput, and conversion rates.

My work includes architecting Kubernetes/EKS deployments, automating infrastructure with Terraform, integrating observability with Datadog/Sentry/Prometheus, and applying ML/AI solutions for real-time transcription and meeting summarization. I mentor engineers, lead cross-functional teams, and drive CI/CD and test automation to achieve resilient, low-latency production systems.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Zoom

Sep 2021 - Oct 2025 (4 years 1 month)

Developed low-latency video/audio streaming and refactored Node/NestJS APIs to reduce global latency by 25% and median API latency from 300ms to 120ms; architected Kubernetes-based microservices and automated Terraform CI/CD to support 50K+ concurrent users.

Node NestJS WebRTC Kubernetes Terraform Redis Kafka Datadog

Senior Software Engineer

FactSet

Apr 2017 - Sep 2021 (4 years 5 months)

Modernized high-performance web apps and headless e-commerce using Next.js and Django REST, reducing API response times by 35% and page load times by 40% while achieving 99.99% uptime with Terraform-managed AWS infrastructure.

Next.js React Django Python PostgreSQL AWS Terraform GitHub Actions Redis

Software Engineer

JPMorgan Chase

Jun 2013 - Mar 2017 (3 years 9 months)

Delivered a React/Node marketplace generating $50K+ monthly and modernized TypeScript/NestJS backends with AWS serverless and Kubernetes autoscaling to reduce API latency by 60% and support 10x traffic spikes.