Isaac K.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Jul 17, 2026.

🎓 UCLA Grad | 8+ Years of Expertise I build production-grade web apps that feel fast, look clean, and actually move metrics. I’m a React-first full-stack engineer (8+ years) and founder/lead at Astranote.ai, where I’ve led product from zero to thousands of users: shipping a Next.js + Node stack with AI features (RAG, function calling) and a crisp, accessible UI. I’m the person you bring in when you need a dependable builder who can think like a product owner, communicate like a PM, and deliver like a senior engineer. I work best embedded with founders and cross-functional teams, scoping work clearly, shaping priorities, and keeping a steady drumbeat of progress with written updates and weekly demos. My default is proactive, transparent communication: no surprises, no vanishing acts, and thoughtful trade-offs documented in plain English. What I Do & How I Build • MVPs that scale: React/Next.js, TypeScript, Tailwind, shadcn/ui, React Query/Redux. • AI & agents: RAG, function calling, agentic loops; OpenAI/Claude; Pinecone; LangChain. • Backend & data: Node/Nest/Express or FastAPI; GraphQL/REST; WebSockets; Postgres/MySQL/Mongo/Firebase/Supabase; Redis; BullMQ; pgvector; S3. • Mobile: React Native apps with store-ready delivery. • Quality: Jest/Vitest + Playwright/Cypress. • Cloud & ops: Vercel/AWS/GCP; Docker; CI/CD with GitHub Actions; Storybook; • Tooling & dev management: GitHub/GitLab/Bitbucket; Linear/Jira/Asana/Trello; Notion/Confluence; Slack/Loom; NX/Turborepo; Figma→code (builder.io/Anima/locofy). Selected Results • Astranote.ai (web) – First value 75s (from 6m); LLM spend −38% via hybrid RAG; core pages <1.2s median. • BlazeBlueprint.com (RN template + site) – RN MVP to TestFlight ~70% faster; Next.js site converts ~4%. • Greek Chapter (React Native) – Admin time 6× lower; compliance +28%; rating 4.8/5. • Cadenza AI (agents + RAG) – 500+ nonprofits; $50M+ grants; ~80% drafting time saved. • Neuroute.ai – Site selection +24%; enrollment forecast error −30%; sub-second dashboards. • uProductive.ai (exec copilot) – Weekly prep time −50% via calendar/email/doc tools with strict org boundaries. How I Work & Communicate • Plan simply, deliver predictably: milestones and success metrics, shipped in small, reviewable increments. • Make progress visible: daily async updates, weekly demos, feature-flagged releases, clear notes on trade-offs. • Be team-first: clear ownership, fast feedback, no surprises. Common Engagements • SaaS MVP (3–4 wks): Next.js + Node, Postgres, auth, Stripe, analytics, CI/CD, first AI agent. • AI Layer (1–2 wks): GPT/Claude chat + RAG + agents. • React Native App (3–4 wks): Store-ready RN app. If you want a React/Next engineer who ships quickly, integrates agents responsibly, and keeps you informed the whole way, let’s talk.