Junior Frontend Developer (React.js & Next.js) - open source

At Blazity, we are a team of React.js and Next.js enthusiasts focused on building API-first products and contributing to the open-source ecosystem. We work closely with clients as long-term technology partners, and we invest heavily in our internal OSS initiatives.

Looking for your next adventure? As it’s often said, you must gather your party before venturing forth – why not join ours? 😊

We’re looking for a Junior Frontend Developer passionate about React, Next.js, and open source. This is an exciting opportunity to start your career in a supportive environment, contribute to OSS, and grow alongside experienced developers.

Our requirements

  • min. 0.5+ years of commercial experience in frontend development.
  • Excellent English (minimum C1).
  • Knowledge of Next.js (pages router or app router), React, TypeScript, and GIT.
  • Experience with Databases, APIs, CMS, or personal side projects is a plus.
  • GitHub contributions, participation in JavaScript communities, blogs, or side projects are highly appreciated.
  • Communication skills: someone who enjoys sharing knowledge, participating in events, tech talks, or podcasts.


Nice to have

  • Tailwind CSS
  • Advanced CSS

Soft skills

  • Strong communication skills.
  • Adaptability to a dynamic environment.
  • Flexibility and willingness to learn.
  • Ambition and eagerness to grow quickly in your career.
  • Resilience under client pressure and tight deadlines.
  • Ability to maintain focus and flow state.
  • Collaboration mindset (team player, open to feedback and cross-project discussions).
  • Positive energy and attitude.
  • Discipline and responsibility.

Motivators

  • Passion for technology
  • Entrepreneurial mindset: desire to create and improve things that impact others

Scope of responsibilities

  • Contribute to Blazity’s internal OSS initiatives.
  • Build new features, improve documentation, fix issues.
  • Collaborate with other OSS contributors and maintainers.
  • Develop and maintain high-performance frontend solutions in Next.js and TypeScript.
  • Collaborate with internal team members (Junior/Mid Developer, PM, Analyst).

What we offer

  • Development opportunities with hands-on experience across different projects.
  • Work alongside many Next.js developers and contribute to open-source projects.
  • Partnerships with companies like Vercel, participation in podcasts and community events.
  • Clean code practices and strong mentorship through a buddy system.
  • Exciting projects with open sharing of knowledge.
  • Focus on personal branding, tech talks, and regular frontend challenges.

 

Benefits:

  • 29 paid days off
  • Private health care (Medicover)
  • Multisport card
  • Hybrid work in Warsaw (flexible hours)

Salary ranges

B2B / UZ: 40–70 PLN net/h

Location

Modern office in Warsaw City Centre – just a short walk from Metro Centrum
Hybrid work model – enjoy flexibility between office and remote

ID: 46 job_post.published_on: 25/11/2025
announcement.apply