Senior full-stack product engineer and AI architect building production SaaS, mobile apps, AI workflows and complex integrations.
16+ years building software · 147+ delivered projects · Sofia / Remote · Available for selected contract work
Portfolio · Selected Work · GitHub · Email
GitHub is part of the proof: long public history, broad language coverage and visible shipping activity.
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I help founders, CTOs and product teams turn complex ideas into software that is designed, shipped and operated in production.
- AI-enabled SaaS products with real workflows, billing, documents, admin tools and usage tracking
- React / Next.js frontends and NestJS / PostgreSQL backends
- React Native / Expo mobile apps
- Payments, subscriptions, webhooks, queues, file storage, PDF/document pipelines and internal tooling
- Complex integrations across AI APIs, credit data, SEO data, BLE hardware, realtime systems and Web3 wallets
| Project | What It Proves | Stack |
|---|---|---|
| AI-CV | AI-native career platform with CV variants, cover letters, document export, shared links, applications, billing and usage tracking. | Next.js, NestJS, PostgreSQL, Claude, S3, Revolut |
| SEO Improve | SEO intelligence SaaS with scans, crawl analysis, Google Search Console, reports, AI workflows and paid tier gates. | Next.js, NestJS, BullMQ, Gemini, DataForSEO, Adyen |
| Credit Refresh | Credit dispute SaaS with report import, PDF letters, encrypted PII, subscriptions, referrals and admin review. | Next.js, NestJS, Prisma, Redis, PDFKit, Claude |
| Gigsy | Musician marketplace with mobile app, venue dashboard, applications, invitations, messaging and operator backoffice. | Expo, React Native, Next.js, NestJS, Socket.IO, PostgreSQL |
| Walltopia eWalls | Mobile and hardware product with BLE route activation, realtime board sync and gym-operator workflows. | React Native, Expo, NestJS, TypeORM, Socket.IO, BLE |
| THORWallet | Mobile DeFi wallet flows, WalletConnect, Ledger BLE, multi-chain assets and non-custodial user experience. | React Native, WalletConnect, Ledger BLE, ethers.js, NestJS |
I am strongest when the work needs one senior engineer who can discuss product intent, design the technical shape, and then ship production code.
Good fit:
- Founder or CTO right-hand engineering
- AI SaaS MVPs, rebuilds and internal tools
- Early-stage product architecture
- Mobile plus backend systems
- Complex integrations, payments and operational workflows
Less ideal:
- Pure maintenance without product ownership
- Large committee-driven delivery with little room for engineering judgment
- Short tasks where the product context does not matter
Frontend: React, Next.js, TypeScript, design systems
Mobile: React Native, Expo, offline-friendly flows, realtime UX
Backend: Node.js, NestJS, PostgreSQL, Prisma, TypeORM
AI: Claude, OpenAI, Gemini, document pipelines, review and approval flows
Operations: Redis, BullMQ, S3/Supabase Storage, webhooks, monitoring
Specialized: payments, Web3 wallets, BLE hardware, identity, integrations
- Start from the product problem and define the smallest useful system that can prove it.
- Design the data model, user flows and operational paths before coding too much surface area.
- Keep AI features tied to real application state, permissions, cost, review and fallback behavior.
- Ship in increments that founders, users and operators can actually test.
- Leave systems maintainable enough for the next engineer to understand and extend.
For contract engineering, product architecture or AI SaaS work: