Design and teach practical courses on AI-assisted software engineering.

- Agentic coding with Claude Code / Cursor / Codex, lead & sub-agent orchestration, repo context (CLAUDE.md / AGENTS.md) and guardrails.

- Integrating LLMs into production products: tool use, streaming, cost & quota control, evaluation.

- Safe automation of code review, testing and release workflows.

AI travel planner with freemium credits & Pro subscriptions. Own the product end to end: architecture, frontend, backend, DB, testing, CI/CD, security, release.

- Built payments platform with 4 providers: cards (lava.top), Stripe, crypto (NOWPayments), RevenueCat (mobile in-app subscriptions).

- HMAC-signed webhooks (SHA-256/SHA-512), idempotent processing and event de-duplication - no double charges or double grants.

- Append-only payments ledger with multi-currency to USD normalisation for revenue, cohort and ROAS reporting.

- Refunds & chargebacks: server-side eligibility engine, DB-level guarantees, admin back-office, Telegram alerts.

- Usage-based credit ledger (reserve - settle - refund), AI quota and rate limiting.

- Backend on Cloudflare Workers + D1 SQL (50+ migrations), KV, cron, Google OAuth, CSP.

- 370+ test files (Vitest, RTL), Playwright E2E, GitHub Actions CI with secret scanning.

- Production LLM features on Anthropic Claude API; AI-native multi-agent workflow, 800+ commits.

Stack: React, TypeScript, Vite, Cloudflare, D1, Firebase Auth, Claude API.

Radio streaming service (live stations, on-demand shows, podcasts), Batumi, Georgia.

- Developed the web client with React, Next.js and TypeScript.

- Built a persistent cross-page audio player (HLS, Web Audio API, Media Session API) with recovery from network drops.

- Real-time "now playing" metadata over WebSocket; SSR, code-splitting, lazy loading, Core Web Vitals, SEO.

- Premium subscription / paywall UI and entitlement checks integrated with billing APIs.

- Accessibility (WCAG 2.1 AA), i18n; unit, integration and E2E tests (Jest, RTL, Playwright) in CI/CD.

- Introduced AI-assisted development (Claude Code, Copilot) for test generation and code review.

Compliance & Quality Management SaaS for regulated industries (remote).

- Led a cross-functional frontend team of 8 engineers: React / Next.js SSR platform and a paired React Native app (audit trails, e-signatures, access control).

- Migrated legacy pages to Next.js App Router with React Server Components: TTFB -35%, bundle size -22%.

- Architected a shared Storybook design system across web and mobile: UI inconsistencies -40%.

- Integrated Datadog RUM (-40% time to detect UI regressions); SonarQube quality gates (-30% production defects).

- Introduced team-wide AI-assisted multi-agent development: feature throughput +30%.

- Delivered a critical 2024 MVP 2 weeks ahead of schedule; mentored 5 engineers, 2 promoted.

Clinical trial & patient engagement platform, HIPAA-compliant (remote).

- Built and maintained a HIPAA-compliant patient portal used across 40+ clinical trials, serving 200,000+ patients.

- Integrated end-to-end encryption and role-based access control for PHI data (HIPAA, 21 CFR Part 11).

- Prepared release documentation and audit-trail reports with compliance and QA teams.

- Led migration of a legacy jQuery dashboard to React / Next.js SSR: Lighthouse performance 48 -> 91.

- Implemented a configurable ePRO form engine (12 question types, conditional branching, multi-language).

Stack: React, Next.js, TypeScript, GraphQL, AWS.

Large-scale real estate platform KW Command (50+ engineers).

- Owned web dashboard architecture for KW Command, used by 180,000+ real estate agents globally.

- Migrated class components to React Hooks: bundle size -18%, test coverage 42% -> 71%; SonarQube gates cut production bugs by 35%.

- Managed task breakdown, estimations and sprint planning for the frontend track; mentored 4 engineers (2 promoted).

Stack: React, React Native, GraphQL, AWS, TypeScript.

Warehouse operations cross-platform app (25 engineers).

- Defined frontend architecture for a warehouse operations app adopted across 12 grocery chains.

- Delivered Inventory Adjustment MVP in 3 months, chosen as proof-of-concept for a $50M global rollout.

Stack: React Native, React, GraphQL, AWS.

Real-time communication app.

- Built real-time chat and video calls over WebSocket and WebRTC with <200ms latency under load.

Stack: React Native, WebSocket, WebRTC, Twilio.

Indonesian fintech mobile app DIMO (React Native) and EU gamification web app MillionMind (React, Redux).

- Developed the DIMO fintech React Native app from scratch through App Store & Google Play launch in 8 months.

- Built core React/Redux frontend for MillionMind, a gamified quiz platform serving 100k+ users.