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MasterBorn

Open 46d

Junior Frontend Developer (React.js)

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Summary

Junior frontend developer building and maintaining React.js + TypeScript applications for MasterBorn's US clients across industries like fintech, sports and medtech. 100% remote (Polish time zone), full-time, with mentor support and a path toward full-stack work.

We are looking for a skillful Web Frontend Developer to join one of our teams working with US clients - referrals from the high-end American IT market.Our tech stack is built around React, Node.js, and TypeScript. We are working with well-established companies and sometimes startups in their early stages (MVPs), which makes the job full of diversity and exciting challenges while crafting cutting-edge solutions.Enjoy the flexibility of working within the Polish time zone and collaborate with clients from diverse industries such as FinTech, SportsTech, MedTech, and many others.

Offer summary:

  • Required skills: 1 year of commercial experience within web development, understanding of basic JS concepts, TypeScript, basic experience with React.js, knowledge hungry
  • Offer: B2B/UZL, paid days off, 100% remote (or hybrid/onsite - as you prefer), Polish time zone, flexible hours, full-time position, long-term contract, Scrum Teams
  • Perks and Benefits: Multisport, Luxmed, Learning Sessions, Education Budget & more
  • Tools you'll use: Apple MacBook Pro, Slack, GSuite, GitHub, Jira, Coda, FigJam

Your future tasks:

  • Develop and maintain React.js applications
  • Implement responsive interfaces with attention to design details and user experience
  • Write clean, maintainable code following team standards
  • Participate in code reviews - giving and receiving feedback constructively
  • Expand beyond frontend into backend work - in the AI era, we're growing frontend engineers into full-stack generalists
  • Collaborate with designers, developers, QA, and product owners to deliver features
  • Document your work and contribute to team knowledge base
  • Continuously expand technical skills with mentor support

About you - Tech skills & Experience:

  • 1 year of commercial experience in web development
  • Strong JavaScript fundamentals and TypeScript knowledge
  • Hands-on experience with React.js ecosystem (hooks, state management)
  • REST API integration and basic build tools configuration
  • Uses AI coding assistants for learning, exploration, and productivity while critically evaluating outputs

About you - Soft skills:

  • Genuine interest in understanding user needs and the business value of your work
  • Proactive in communication - shares progress and asks for help when needed
  • Embraces feedback as learning opportunities and comfortable admitting knowledge gaps
  • Open-minded about learning new frameworks and technologies
  • Interest in backend technologies and aspiration towards fullstack development
  • Comfortable working in Agile/Scrum environments
  • English B2+ for international collaboration
  • Polish C1 for daily team communication
  • Ready to work closely with mentors while gradually building independence

Nice to have:

  • Modern meta-frameworks (for example: TanStack Start, Next.js, Remix, SvelteKit)
  • Cloud services understanding (AWS, serverless)
  • Docker basics, CI/CD pipelines
  • Testing frameworks (Jest, React Testing Library)

Recruitment Process:

  • CV Review
  • Phone call with our Recruiter (15min)
  • Technical task (4h)
  • Soft-skills interview with our Recruiter (1h)
  • Technical interview with our Specialists (2h)
  • Decision and feedback 🥳
Meaningful projects, top-notch experts and value-driven workplaceSound good?Apply now!

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