About

Marin Cholakov

Senior Front-end Developer @ A1 Bulgaria

Open to select freelance projects

Senior Front-end Developer at A1 Bulgaria with 5+ years building and modernizing web applications in React, Next.js and TypeScript. I've been the sole front-end developer on a production platform, rebuilt legacy interfaces from the ground up, and shipped work across telecom, healthtech and e-commerce. Currently expanding toward full-stack with Node.js, Express, PostgreSQL and Prisma — the best front-end decisions come from understanding the whole system. I work with AI coding assistants daily and am deliberate about where they help and where they don't.

5+
years shipping
6
teams
16
technologies
10
certifications

Experience

Where I've worked

  1. 2025 — Present · Full-time

    Senior Front-end Developer

    A1 Bulgaria

    Building and maintaining customer-facing web applications for one of Bulgaria's largest telecom operators. Working in an agile team across front-end architecture, code review and performance optimization.

    • React
    • TypeScript
    • JavaScript
    • HTML
    • CSS

  2. 2022 — 2025 · Full-time

    Frontend Developer

    Codery Teams

    Front-end developer at an EU software company providing dedicated product teams. Built key pages of the company platform with Next.js for better performance and SEO, owned styling with Tailwind CSS, and delivered client-facing front-end work alongside cross-functional teams.

    • React
    • Next.js
    • TypeScript
    • Tailwind CSS
    • MongoDB
    • Internationalization

  3. 2022 — 2025 · Contract

    React Developer

    Printt · via Codery Teams

    Led the complete redesign and modernization of the front-end application as the sole front-end developer. Integrated Framer Motion for UI animation and RTK Query for data fetching and state management, and drove bug triage and stability work.

    • React
    • Next.js
    • TypeScript
    • Redux Toolkit
    • RTK Query
    • Framer Motion

  4. 2022 — 2023 · Contract

    React Developer

    Kranus Health

    Front-end development for a digital healthcare platform — building clinician- and patient-facing interfaces with a focus on usability, accessibility and performance.

    • React
    • TypeScript
    • JavaScript
    • HTML
    • CSS

  5. 2022 — 2022 · Full-time

    React Developer

    Develop Soft

    Built a phone-diagnostics mobile application with React Native and contributed to a shoppable-video e-commerce feature that let users purchase directly from short clips.

    • React
    • React Native
    • TypeScript
    • Material UI
    • MobX
    • SCSS

  6. 2021 — 2021 · Full-time

    React Developer

    Devasoft

    Designed and implemented dynamic front-end components in React and integrated REST APIs with the back-end team, contributing to a ~20% improvement in application performance through code and component optimization.

    • React
    • JavaScript
    • REST APIs
    • Cypress
    • Git

Toolkit

What I work with

Front-end

  • HTML
  • CSS
  • JavaScript
  • TypeScript
  • React
  • Next.js
  • Redux Toolkit
  • Tailwind CSS
  • Material UI
  • Framer Motion

Back-end & data

  • Node.js
  • Express.js
  • PostgreSQL
  • Prisma ORM
  • MongoDB
  • REST APIs

Practice

  • AI-assisted development
  • Code review
  • Agile delivery
  • Performance profiling
  • Accessibility

Learning

Courses & certificates

Working on something interesting?

I take on a small number of freelance builds alongside my role at A1 Bulgaria. Happy to talk about it either way.

Get in touchMarin Cholakov signature