Description

I'm Daniel — an independent product engineer based in Sofia.

I ship AI features into SaaS products as fixed-price 3-4 week sprints.

One feature, production-quality, documented, handed off to your team.

WHEN I'M MOST USEFUL

- Your team agrees AI should be in the product, but it keeps slipping

- You've seen demos but nothing is running with real users

- You want one feature shipped, not a six-month engagement

- You need a senior engineer who can own the whole stack

- You're a SaaS at €1M+ ARR wanting AI in production fast

WHAT I BRING

Ten years building products end-to-end. Same brain across:

- Backend: TypeScript (Fastify, Next.js), Python, PostgreSQL, Prisma

- Mobile: Swift / SwiftUI (iOS + macOS), Kotlin (Android)

- Frontend: React, Next.js, Astro, SvelteKit

- AI: OpenAI, Anthropic Claude, RAG, vector search (pgvector), agents, eval harnesses, open-source models

- Infra: Docker blue-green on Hetzner, Cloudflare Pages, GitHub Actions, Tailscale

PROOF OF WORK

Live production AI apps I built and run:

- GarageHub — vehicle maintenance app on iOS, Android, Web. Includes Rev AI: Claude agent with 30+ tools, RAG, photo diagnosis via Gemini, 10 languages.

- SpecBot — AI proposal generator with voice-to-proposal, multi-model routing, reusable blocks.

- Blockway — capacity and revenue planning for solopreneurs.

CLIENT TRACK RECORD

- HappyPetNet.com - 18+ months embedded technical partner

- Healthyco ( ) - 5-year technical lead

- ImproveWell.com - 5-year cross-platform engineering, acquired

- SportPoint.bg - multi-year platform build, scheduling + payments

LANGUAGES & AVAILABILITY

- English (fluent), Bulgarian (native)

- EU timezone (CET / EET), remote

- Currently: one sprint slot open

Send a Malt message describing your product and the AI feature you're considering. I reply within a business day.

Industry field of expertise

Languages

English
Native or bilingual
Bulgarian
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

GarageHub
GarageHub — Vehicle maintenance app + Rev AI
January 2026 - Today (7 months)
Built end-to-end: iOS app (SwiftUI), Android (Kotlin), Web (Next.js), and
Fastify backend on Hetzner. Includes Rev AI — a Claude-powered mechanic
assistant with 30+ agentic tools, RAG over the user's garage data,
photo-based diagnosis via Gemini, and 10-language support.

Tech: TypeScript / Fastify / Prisma / PostgreSQL / Swift / Kotlin /
Anthropic API / pgvector.

Live: getgaragehub.com
Typescript Swift Kotlin RAG Business development
HappyPetNet
Embedded technical partner — pet care SaaS
November 2024 - Today (1 year and 9 months)
Stabilised a fast-growing pet care booking platform. Took ownership of
the workflows that caused the most operational noise — letting the
team focus on customers instead of fires.

Key wins: more stable booking operations under growth pressure, faster
internal handling of daily customer tasks, predictable releases with
fewer regressions.
React.js Next.js MongoDB Node.js Typescript
Healthyco
Technical lead — healthcare workflow platform
February 2020 - March 2026 (6 years and 1 month)
Five years working on a healthcare workflow platform where bugs cost
patient trust, not just engineering time. Improved critical patient
workflows, reduced hidden failure points, and maintained a disciplined
release model for sensitive operations.

Quote from the team: "We never had to worry about a release breaking
something for patients."
React.js React Native Laravel JavaScript WebRTC