Andrii Petsera

Summary

I build turnkey web systems that automate how companies work — CRMs, internal tools, integrations, AI features and Telegram bots — from discovery and design to production and support. Designing since 2008, in IT since 2010, full-stack web since late 2014, 6+ years leading frontend teams. With AI in the loop, the stack is a means, not a limit: I pick what ships the outcome fastest.

Expertise

• Business process automation — CRMs, internal tools and workflow systems that replace spreadsheets and manual routine.
• AI integration — LLM features, chat assistants, RAG over your documents, AI agents and MCP servers.
• Telegram bots & mini apps — Bots for orders, notifications and payments; Telegram Mini Apps.
• Web apps & SaaS — Full-stack products, dashboards and admin panels on Next.js and React.
• Websites & landing pages — Fast, SEO-ready sites with a headless CMS; WordPress → Next.js migrations.
• Dev tooling & extensions — Chrome extensions, IDE plugins, CLI tools and CI/CD pipelines.
• UI/UX design — From Figma to production; design systems. Designing since 2008.

Experience

1. MGear · Full-stack developer · frontend focus

   Aug 2025 → present

   Revenue-intelligence platform for US hospital systems. Web app and admin UI end to end, UI/UX design, motion-design presentations for clients, training guides; NestJS backend support.

   React · TypeScript · Redux Toolkit · Ant Design · NestJS · PostgreSQL · Remotion

2. BOOSTA · Full-stack developer

   Feb 2026 – Jun 2026

   Built the HanimaX web app from the first commit — catalogue, series and episode pages, paywall and subscriptions, i18n — and helped the backend developer on the NestJS API.

   Next.js · TypeScript · HeroUI · Tailwind CSS · next-intl · NestJS · TypeORM · Redis

3. Freelance · Turnkey web development

   2022 → present

   Turnkey projects for direct clients, in parallel with company work: business automation, Czech culture portals rebuilt from WordPress to Next.js, studio sites, Telegram bots.

   Next.js · Vercel · Telegram Bot API

4. Raise.Band · Frontend developer, Head of department

   Jan 2019 – Jan 2024 · Kyiv

   Led a team of 4 frontend developers building SPA web apps — CRM platforms and internal tooling — from architecture and UI/UX to deployment.

   • Built a CRM for automating website promotion and a Chrome extension for the SEO team — the team’s productivity grew by 1000%
   • Head of the design department (2020–2021, part-time): mentored 3 designers, led the UI kit
   • Introduced CI/CD, code review, conventions and architecture/API documentation

   TypeScript · React · Redux Toolkit · Next.js · Strapi · Chrome extensions

5. Learnify.co · Frontend developer & web designer

   Aug 2016 – Jan 2019 · Rivne

   80+ turnkey websites — design, layout, CMS integration, SEO and support. Automated the frontend workflow (Gulp, bash, CI/CD), wrote conventions, mentored newcomers.

   JavaScript · SCSS · Jinja2 · Gulp · CI/CD · Photoshop

6. Freelance · Web master: design, frontend, backend

   May 2014 – Jul 2016

   Turnkey websites for clients: design in Photoshop/Illustrator, HTML5/CSS3/jQuery layout, WordPress integration and support.

   HTML5 · CSS3 · jQuery · WordPress

7. RTE Ukraine · Software & web developer, IT administrator

   Jun 2010 – Mar 2014

   Software that automated the company’s business processes, plus corporate websites and infrastructure. Where the love for automation started.

   Delphi · WordPress · Linux

8. Web design · Freelance web designer (UI/UX, Flash)

   Aug 2008 – 2011

   Interfaces and website layouts in Photoshop for turnkey sites. The UI/UX eye comes from here.

Selected work

• MGear — revenue intelligence for healthcare · MGear · US hospital systems — One workspace for hospital case managers and medical directors: payor authorizations, peer-to-peer reviews, clinical oversight and a unified patient census.
• HanimaX · BOOSTA · streaming — Short-drama streaming platform: catalogue, series and episode pages, paywall with subscriptions, multilingual.
• SEO automation: CRM + Chrome extension · Raise.Band — A CRM that automates website promotion and a browser extension that brings it into the SEO team’s daily work.
• Czech culture portals · nasekultura.cz · kulturnipropagace.cz — Culture listing portals rebuilt from WordPress to Next.js with an editor, auth and multilingual content.