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JW
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John Wang

@johnwang

Senior software engineer specializing in scalable, AI-driven full-stack systems.

United States
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What I'm looking for

I seek senior engineering roles where I can build scalable, secure cloud-native systems, integrate AI/ML, mentor teams, and drive reliability and performance improvements.

I am a senior software engineer with deep experience building full-stack, cloud-native, and AI-driven applications for platform-scale environments. I design and operate distributed systems, real-time services, and high-performance web applications used by millions, with strong ownership and mentorship focus.

At Bilberrry I led development of multiple AI-enabled, multi-tenant web platforms, built backend services in Node.js and Python, and integrated ML/AI pipelines for content generation and semantic search while maintaining low latency and high availability. Previously at Uber and Microsoft I designed Kafka-powered event pipelines, global cloud services, and robust REST/gRPC APIs, improving performance, reliability, and observability across large-scale systems.

I excel at combining backend and frontend expertise (Java, Python, Go, React, TypeScript) with cloud and DevOps practices (AWS, Azure, Terraform, CI/CD) to deliver secure, maintainable, and performant products. I seek roles where I can drive technical strategy, mentor teams, and deliver impactful, customer-focused systems.

Experience

Work history, roles, and key accomplishments

BI
Current

Senior Software Engineer

Bilberrry

Sep 2023 - Present (2 years 9 months)

Led development of 8+ AI-enabled, multi-tenant web platforms supporting 100K–180K MAU with strict data isolation and RBAC, achieving 99.9% uptime and reducing release time by 40%. Built backend services (Node.js, Python) handling 120K–200K requests/day and AI pipelines with p95 latency <400ms under peak load.

Uber logoUB

Senior Software Engineer

Uber

Feb 2019 - Aug 2023 (4 years 6 months)

Designed and operated real-time, event-driven backend systems supporting 5M+ daily sessions and Kafka pipelines processing 10M+ events/day, improving p95 latency ~20% and reducing duplicate processing/billing errors by 40%. Implemented WebSockets for sub-500ms end-to-end trip updates and participated in on-call rotations for high-availability services.

Microsoft logoMI

Senior Software Development Engineer

Feb 2011 - Feb 2019 (8 years)

Designed and operated globally distributed cloud services across Azure regions serving millions of users, improving throughput by 30% and reducing incident detection time by 40% through observability and CI/CD improvements. Led protobuf/gRPC versioning and migrated legacy workloads to modern Azure services, cutting operational costs by 25%.

Education

Degrees, certifications, and relevant coursework

University of Pennsylvania logoUP

University of Pennsylvania

Bachelor of Science, Computer Science

2010 - 2014

Completed a Bachelor of Science program at the University of Pennsylvania from 2010 to 2014.

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