Junior Frontend Developer (React.js)

MasterBorn; United States; Remote; USD 65,000 - 95,000; Full time

Benefits offered by this job

B2B/UZL

Paid days off

Remote work (100% or hybrid)

Polish time zone

Flexible hours

Full-time position

Long-term contract

Scrum Teams

Multisport

Luxmed

Learning Sessions

Education Budget

Job summary

MasterBorn is seeking a Web Frontend Developer to join a US-focused client team. The role centers on crafting modern React applications using TypeScript, with opportunities to explore backend tasks as the project evolves.

The position emphasizes collaboration across design, QA, and product teams, ensuring high-quality user experiences. You will work in the Polish time zone, enjoy flexible hours, and have the option for 100% remote work or hybrid/onsite as preferred.

Qualifications

• 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

Responsibilities

• 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 - grow 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

Skills

JavaScript fundamentals

TypeScript

React.js

REST API integration

AI coding assistants usage

Web development experience (1y)

Tools

Apple MacBook Pro

Slack

GSuite

GitHub

Jira

Coda

FigJam

Job description

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 workplace