Valentyn Yakovliev
Full-Stack Product Engineer & Founder — I lead and build complete digital products end-to-end (web, mobile, desktop) from idea to launch, and I build the AI agents that help me move faster.
I'm a full-stack engineer who leads products end-to-end — from a blank page to real, paying users — building the backend (Node.js, Python/FastAPI), the frontend (Vue.js, React, Next.js), and apps that run on web, phone and desktop from a single project. Along the way I've built a small fleet of AI agents that do real production work: one adapts and translates content for search engines, one drafts marketing creatives and articles, one tests every feature and writes its own documentation, and one runs social media on its own using browser automation.
Based in Kharkiv, Ukraine (GMT+2) · Open to remote Senior/Lead Full-Stack and AI Engineering roles.
What I can do for a team
- Lead a product end-to-end, not just write code. I take initiative — spotting what needs to be built before I'm asked, owning the architecture and the decisions, and driving things from idea to a shipped feature.
- Build a product from scratch and ship it. Give me an idea or a design — I write the backend (Node.js or Python/FastAPI), build the screens, set up payments, put it online, and keep it running. No handoffs, no gaps.
- Make one app work everywhere. Web browser, iPhone, Android and desktop — all from one shared project, using tools like Capacitor and Ionic, so it's cheaper and faster to maintain.
- Build AI agents that do real work. Not just chatbots — agents that adapt and translate content for SEO, draft creatives and articles, test features and write their own documentation, or run social media on their own.
- Speak business, not jargon. I translate complicated technical limits into plain language and turn rough feedback into working features.
Skills & technologies
Framework-agnostic — the underlying patterns are the same, so I move between React, Vue, Angular and Svelte easily.
What I've actually built
A consumer AI SaaS product, built solo end-to-end
Designed, built and shipped a full product on my own — web app, native Android app, payments, and AI features — and grew it to 1,500 paying users in 4 months, without a team.
speckit-product-forge
My own open-source Spec-Driven Development framework, built on top of GitHub's Spec Kit. It forces every feature through a short, structured spec first, then drives AI coding agents — Claude Code, Codex, Windsurf, Devin — through TDD/BDD-style scaffolding, tests and a first pass of code against that spec.
github.com/VaiYav/speckit-product-forge →AI agent fleet doing real production work
Built a set of AI agents now running in production: one adapts and translates content for search engines, one drafts marketing creatives and articles, one tests every feature and writes deep-wiki-style documentation automatically, and one runs social media on its own using stealth-browser automation.
AI Integration Consultant & Full-Stack Engineer
Currently helping product teams add AI without the hype — designing AI adoption roadmaps and agent architecture — while building AI agent workflows, RAG-powered features and native mobile apps (Capacitor) for a consumer AI platform.