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Yaroslav Z
@yqroslavz
FullStack Engineer
Poland
Russian, Ukrainian, English
About me
I'm a Full-Stack Engineer with 3 years of production experience in TypeScript, Node.js/NestJS, and React. I specialise in third-party API and AI/LLM integrations — connecting external services, payment/CRM/ad APIs, and AI providers (OpenAI, Claude, Gemini) into real applications.
I spent 3 years building an ad-tech SaaS product with 8+ API integrations, and recently shipped two open-source full-stack AI tools end-to-end. I focus on clean, reliable integration work that holds up in production.
Skills
Yaroslav Z
Offline •
Average response time: 1 hour
See my services
API & Integrations
I will integrate any third party API into your node js backend
AI Integrations
I will add an ai chatbot or content generator to your web app
