Ivan Drinchev
Senior AI Application Engineer
at CHAPTR
Working on Reedy an AI-based metadata optimisation tool for books. As CHAPTR is the AI innovation hub of Holtzbrinck Publishing group, I’ve contributed to multiple AI-driven PoCs, hackathons and workshops.
Tech stack
Google Cloud, Langfuse, Langchain, OpenAI, Anthropic, Elastic Search, Firebase and others.
Senior Full-stack Engineer ( Freelance )
at Nexamind
Creating tailor‑made AI solutions with measurable ROI for enterprise clients. My work includes building various RAG systems for customers as well as a B2B, AI‑powered chatbot platform.
Tech stack
NextJS, Tailwind, React Server Components, Langfuse, Langchain, Langgraph, OpenAI, Azure
Senior Full-stack React/Node Engineer ( Freelance )
at Yahoo!
Modernizing and maintaining Yahoo! Mail, used by over 200 million users. I led a team of six developers to redesign Yahoo Mail, including mentoring, driving technical decisions, reviewing pull requests and contributing hands‑on code.
Tech stack
ReactJS, NodeJS and others
Full-Stack Web Developer ( Freelance )
Building an IoT Platform from scratch in a cross-functional teams, including development of applications, UI Library, E2E Tests, NodeJS Backend services with GraphQL
Tech stack
ReactJS, Azure DevOps, Azure Platform, GraphQL, oAuth, Material UI, NodeJS, JEST, Cypress, Terraform, Storybook, Apollo GraphQL
Front-end Web Developer ( Freelance )
at Hey Car
Building and maintaining Hey Car, as well as closed-source UI library and internal applications. Participating in Architectural Decision Recommendations and front-end best practices workshops.
Tech stack
ReactJS, Redux, SSR, GitHub, CircleCI, Kubernetes, Styled Components, NodeJS, React Router, Storybook, Cypress
Full-Stack Web Developer & team lead ( Freelance )
at OSRAM
Building and maintaining React SPA, Open Source Stylesheet styleguide, React UI Library as well as an open source SDK for OSRAM's IoT platform
Tech stack
ReactJS, BitBucket, Kubernetes, JIRA, ReactJS, CSS Modules, NodeJS, React Router, Styleguidist, JEST, Cypress, OpenAPI, PostCSS
Freelance Web Developer
More than 20+ years of experience in developing web sites and scalable web applications ( frontend and backend ), deploying them on various clouds and delivering maintainable code. Also, I have done consultancy on development architectures, talent seeking and tech infrastructure and tutoring.
Notable Clients