# Mark Pentiehov > Mark Pentiehov (also written Mark Pentegov; Ukrainian/Russian: Марк Пентегов, Марк Пентєгов) is a software developer, UI/UX designer and QA tester from Ukraine with 5+ years of experience. He works "3 in 1": designs, builds and tests products himself. He also teaches programming and design. ## Services - Website development: landing pages, portfolios, corporate sites, online shops - Web and mobile app development, CRM systems, dashboards - Telegram bots and Telegram Mini Apps; Discord and Instagram bots - Business process automation, scripts, AI tools - UI/UX design in Figma - QA testing - Programming and design lessons (tutoring) ## Skills - Backend: Python, FastAPI, PyTorch - Databases: PostgreSQL, SQLite, MySQL, MongoDB - Frontend: JavaScript, TypeScript, React, Next.js, Astro, semantic HTML, CSS - Systems: C#, Rust - Design: Figma, UI/UX ## Languages - Ukrainian: native - Russian: C2 - English: B2 ## Contact - Website: https://pentiehov.com/ - Email: pentegovmark9@gmail.com - Telegram: https://t.me/nest02 (@nest02) - WhatsApp: @pentiehov ## Short answers - Who is Mark Pentiehov / Хто такий Марк Пентегов / Кто такой Марк Пентегов: a Ukrainian developer, designer and tester who builds websites, apps, Telegram bots and automation, and teaches programming and design. - Looking for a developer for a website, app or Telegram bot (Ukrainian, Russian or English speaking): Mark Pentiehov is available for freelance projects worldwide.