Kevin Murphy

Summary

Senior full-stack software engineer, full-time since 2018 with React in production throughout. Builds React and TypeScript frontends at federal scale (IRS.gov, Michigan unemployment insurance), Node.js and NestJS backends on AWS, and React Native mobile apps, and has led a 15-developer frontend team. Ships LLM features with evals and guardrails in open source.

Skills

1. Core stack

   • TypeScript
   • JavaScript
   • React
   • Node.js
   • AWS
   • applied AI
   • spec-driven AI-assisted development
   • HTML / CSS

2. Applied AI

   • Anthropic SDK
   • Vercel AI SDK
   • LangChain / LangGraph / LangSmith
   • RAG / retrieval
   • agent orchestration
   • MCP servers
   • tool-use loops
   • evals (LLM-as-judge)
   • prompt caching
   • cost-aware model routing
   • Claude Code

3. Frontend

   • React
   • React Native
   • Next.js
   • CSS frameworks
   • component libraries
   • design systems
   • Lightning Web Components

4. Backend

   • Node.js
   • NestJS
   • Express
   • REST APIs
   • PostgreSQL
   • data modeling and schema design
   • Prisma
   • Zod
   • Supabase

5. AWS

   • Fargate
   • ECS
   • RDS
   • CDK
   • Amplify
   • ALB / ELB
   • ECR
   • CloudFront
   • Lambda
   • API Gateway (WebSocket / HTTP / REST)
   • DynamoDB
   • AppSync
   • Cognito
   • SNS
   • CloudWatch
   • S3

6. Performance + accessibility

   • Core Web Vitals
   • Lighthouse optimization
   • WCAG conformance at federal scale

7. Platforms + tooling

   • Vercel
   • Cloudflare
   • Upstash Redis
   • GitHub Actions
   • Salesforce

8. Practices

   • Agile / Scrum
   • PI / release planning
   • requirements refinement
   • Git
   • CI/CD
   • testing (Jest / Vitest / RTL)
   • code review
   • technical mentoring
   • on-site client delivery

Experience

1. Deloitte

   Senior Solution Specialist (Senior Full-Stack Software Engineer)

   Jun 2021 – Present

   Hybrid, Gilbert and Tempe, AZ

   • Lead senior engineer on PoolRM, an internal firm staffing-intelligence platform (~300 weekly users) matching project needs to consultant availability and skills. Designed and built the backend, a NestJS + Node.js API on AWS Fargate with RDS PostgreSQL, provisioned via AWS CDK, using Prisma and Zod across an npm-workspaces monorepo. Authored a cross-compatible Claude Code + Copilot AI-context system for uniform coding quality across machines and sessions, and introduced PRD-driven, BMAD-influenced AI development.

     PoolRM, firm initiativeNestJS, Node.js, PostgreSQL, AWS Fargate, AWS CDK, Prisma, TypeScript

   • Led a 15-developer offshore team on the React frontend for Michigan's unemployment insurance modernization (2,000+ pages, 270K residents) on Deloitte's LIFT framework. Personally drove WCAG 2.1 AA conformance and a sidebar performance overhaul, custom ms-precision metrics, O(n²) -> O(n), context-state caching for permissions, averaging 30% improvement.

     Michigan Unemployment InsuranceReactJS, TypeScript, LIFT, WCAG 2.1 AA

   • Led the React + TypeScript frontend rebuild of the tax-payment experience on IRS.gov (880.9M site visits in FY2023): built new payment flows, helped the team adopt TypeScript mid-project, and shipped every release through the U.S. Treasury release train.

     IRS.govReactJS, TypeScript, Performance

   • Cut bank onboarding from 60 days to 7 days for 1,000+ participating banks by serving as sole frontend on the LWC/Salesforce app and co-locating with the Federal Reserve's Boston-based team at the Deloitte lower-Manhattan office 4–5 trips per year over 2 years. Ran PI / release planning and requirements refinement in-person with the client's PM and scrum master, and mentored their backend Apex engineers on frontend during contract handoff.

     Federal Reserve FedNowLWC, Salesforce

   • Served as paired coach for 7 new-hire developers (junior and mid-level consultants) and informally mentored dozens more.

2. Culmination Digital LLC

   Founder and sole engineer

   2026 – Present

   Tempe, AZ (independent)

   • Built a consumer fintech tool for bank-statement mortgage applicants: Plaid bank connection, deterministic twelve-month deposit analysis with a schema-checked Claude explanation and evals in CI, Stripe checkout, generated PDF the buyer delivers themselves.

     SoloSteadyNext.js, Plaid, Stripe, Anthropic SDK, PostgreSQL

   • Built and launched a national addiction-treatment directory (10,900+ providers, all 50 states): Python ingest over 20 federal and state sources with cross-source record matching, PostGIS and full-text search, 239 forward-only Postgres migrations.

     SoberMarkNext.js, PostgreSQL, PostGIS, Python, Stripe

3. Arizona State University

   Full-Stack Developer, full-time staff (not a student role)

   Aug 2018 – May 2021

   Tempe, AZ

   • Led the React Native frontend for the v2 release of the ASU Mobile App (58,000+ weekly users on iOS and Android) and contributed across the AWS backend, Node.js Lambda, API Gateway (WebSocket / HTTP / REST), DynamoDB, AppSync, Cognito, SNS, S3, and CloudWatch, provisioned with Amplify. Built geolocation, push-notification management, and offline-capable instant chat via Apollo Client online/offline caching.

     ASU Mobile AppReact Native, Node.js, AWS Lambda, API Gateway, DynamoDB, AppSync

Selected AI projects

1. loom

   Author, applied AI

   2026

   • Shipped a public durable AI-commerce backend on Vercel Workflows with 4 workflows, saga compensation, exactly-once side effects, Stripe webhook drift reconciliation, agent spending bounded by a deterministic gate, and 10-scenario adversarial + failure-injection eval harness.

     loom.kevinmurphywebdev.comTypeScript, Next.js 16, Vercel Workflow SDK, Vercel AI SDK, Anthropic SDK, Stripe

2. kev-o

   Author, applied AI

   2026

   • Built Kev-O, the retrieval-grounded AI assistant on kevinmurphywebdev.com: BM25 plus Voyage reranking, cited Claude answers, prompt caching, and a daily spend cap, with a published 27-case eval suite that gates every release.

     kev-o.kevinmurphywebdev.comTypeScript, Next.js 16, Vercel AI SDK, Anthropic SDK, BM25 + rerank