CW

Looking for a job

Chris Wang

@chriswang

Senior Software Engineer building scalable, AI-powered web platforms with a focus on performance, cost, and great UX.

What I'm looking for

I’m looking for a team where I can own end-to-end delivery of AI-powered, user-facing systems—designing scalable services, optimizing performance and cost, and collaborating across product and research to ship reliably at speed.

I’m a Senior Software Engineer with 8+ years building scalable, high-impact web and AI-powered applications across Perplexity, Meta, and Robinhood. I take strong end-to-end ownership, collaborating cross-functionally to turn complex requirements into production-ready solutions.

At Perplexity, I led development of an AI Answer Engine platform using RAG pipelines with LangChain and OpenAI APIs, improving answer accuracy by ~30% and reducing latency by ~25%. I also designed and productionized an LLM orchestration layer (prompting, response post-processing, and structured output validation), reducing hallucination rates by ~40% while improving response consistency across edge cases.

Earlier at Meta and Robinhood, I built high-throughput backend services and APIs for large-scale event processing, reducing p99 latency by 40% and improving deployment velocity by 3x after migrating to microservices. I pair solid distributed-systems and API architecture skills with practical full-stack delivery—React/TypeScript, cloud-native AWS infrastructure, and performance/cost optimization—so teams can ship reliable user-facing products at scale.

Experience

Work history, roles, and key accomplishments

PE

Current

Senior Software Engineer

Current

Jun 2023 - Present (2 years 10 months)

Led end-to-end development of Perplexity’s AI Answer Engine platform, improving answer accuracy ~30% and reducing latency ~25% using RAG with LangChain/OpenAI APIs. Built scalable retrieval/ranking and orchestration services, delivered React/Next.js UI, and deployed AWS (EKS/Lambda) infrastructure, reducing infrastructure costs ~20–25%.

React TypeScript Python fastAPI Lang Chain OpenAI API PostgreSQL Redis Terraform

ME

Senior Software Engineer

Aug 2020 - Jun 2023 (2 years 10 months)

Built backend services for Meta’s Ads Delivery Optimization platform processing billions of events/day, reducing p99 latency by 40%. Designed high-throughput APIs and real-time analytics pipelines on AWS, migrated legacy systems to microservices (3x faster deployments), and improved release reliability via CI/CD and automated testing (50% fewer rollbacks).

Java Spring Boot Kafka Presto Microservices React CI CD Automated Testing API Design

RO

Software Engineer

Oct 2017 - Aug 2020 (2 years 10 months)

Shipped core trading interface features for Robinhood’s retail investing platform, improving UI responsiveness and boosting engagement across high-traffic workflows. Developed reusable React/TypeScript component libraries and design system patterns, and supported backend APIs with Python/Django using unit and integration testing to reduce regressions.

React TypeScript Redux Design Systems Python Django Unit Testing Integration Testing Component Libraries

Education

Degrees, certifications, and relevant coursework

UB

University of California, Berkeley

Bachelor of Science, Computer Science

2013 - 2017

Bachelor of Science in Computer Science at the University of California, Berkeley from 2013 to 2017.

Tech stack

Software and tools used professionally

Kubernetes

PostgreSQL

Gmail

Node.js

Terraform

React

Python

GraphQL

TypeScript

Docker

LiteLLM

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