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I'm Kevin Liu, a Senior Full Stack Engineer based in the San Ramon area, with 7+ years building consumer-scale web apps in local search, marketplaces, and advertising. My focus is the end-to-end delivery of features using ASP.NET Core, C#, React, and Azure, from frontend interfaces and REST APIs to cloud deployment and observability. I'm driven by performance, scalability, and reliability, and I enjoy modernizing legacy stacks into maintainable .NET microservices. I communicate clearly with stakeholders and plan for long-term growth, while delivering high-quality software with a proactive and independent working style.…I'm Kevin Liu, a Senior Full Stack Engineer based in the San Ramon area, with 7+ years building consumer-scale web apps in local search, marketplaces, and advertising. My focus is the end-to-end delivery of features using ASP.NET Core, C#, React, and Azure, from frontend interfaces and REST APIs to cloud deployment and observability. I'm driven by performance, scalability, and reliability, and I enjoy modernizing legacy stacks into maintainable .NET microservices. I communicate clearly with stakeholders and plan for long-term growth, while delivering high-quality software with a proactive and independent working style.

Kevin Liu

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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I'm Kevin Liu, a Senior Full Stack Engineer based in the San Ramon area, with 7+ years building consumer-scale web apps in local search, marketplaces, and advertising. My focus is the end-to-end delivery of features using ASP.NET Core, C#, React, and Azure, from frontend interfaces and REST APIs to cloud deployment and observability. I'm driven by performance, scalability, and reliability, and I enjoy modernizing legacy stacks into maintainable .NET microservices. I communicate clearly with stakeholders and plan for long-term growth, while delivering high-quality software with a proactive and independent working style.…I'm Kevin Liu, a Senior Full Stack Engineer based in the San Ramon area, with 7+ years building consumer-scale web apps in local search, marketplaces, and advertising. My focus is the end-to-end delivery of features using ASP.NET Core, C#, React, and Azure, from frontend interfaces and REST APIs to cloud deployment and observability. I'm driven by performance, scalability, and reliability, and I enjoy modernizing legacy stacks into maintainable .NET microservices. I communicate clearly with stakeholders and plan for long-term growth, while delivering high-quality software with a proactive and independent working style.

Available to hire

I’m Kevin Liu, a Senior Full Stack Engineer based in the San Ramon area, with 7+ years building consumer-scale web apps in local search, marketplaces, and advertising. My focus is the end-to-end delivery of features using ASP.NET Core, C#, React, and Azure, from frontend interfaces and REST APIs to cloud deployment and observability.

I’m driven by performance, scalability, and reliability, and I enjoy modernizing legacy stacks into maintainable .NET microservices. I communicate clearly with stakeholders and plan for long-term growth, while delivering high-quality software with a proactive and independent working style.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at Yelp

November 1, 2022 - Present

Architected ASP.NET Core Web APIs and React admin tools for the Request-a-Quote (RAQ) platform; refactored synchronous job-matching into async C# workers with Kafka and PostgreSQL, reducing latency from 2.4s to under 500ms at peak load. Led migration of merchant-facing workflows from legacy MVC modules to .NET 8 microservices with EF Core and containerized deployments on Kubernetes, reducing release cycles from 4 hours to under 90 minutes via canary pipelines in GitHub Actions. Built a React + TypeScript merchant onboarding portal integrated with identity-verification APIs (Persona, Stripe Identity), rules-based escalation, and SOC 2-compliant audit logging, reducing manual review queue volume by 40%. Designed reusable React component libraries and ASP.NET Core API contracts for consumer engagement (notifications, experiment flags, and profile settings), standardizing auth, validation, and error handling across 8+ product surfaces. Implemented platform security for OAuth 2.0/JWT, RBAC,

Software Engineer at Yelp

June 1, 2019 - October 1, 2022

Developed event-driven ingestion services in C# that normalized data from 15+ third-party local business sources into Yelp’s canonical business schema, improving new-listing quality and reducing editorial correction tickets. Delivered full-stack features for the services marketplace onboarding pipeline, React forms, ASP.NET Core validation, and PostgreSQL persistence, including automated escalation for common rejection patterns. Engineered REST and SignalR-backed notification flows on Kafka with engagement scoring hooks tied to Yelp’s internal experimentation framework. Contributed to Kubernetes migration of internal .NET tooling from EC2: Helm charts, HPA policies, health probes, and on-call runbooks for merchant platform services. Collaborated with product, design, QA on cross-browser React testing (Playwright), API contract tests (xUnit), and release checklists for consumer and business experiences.