Senior Front End Developer for Sport FE

4 dni temu


Warszawa, Mazovia, Polska GR8 Tech Pełny etat 60 000 zł - 120 000 zł rocznie

GR8 Tech is a leading B2B provider of iGaming solutions that empowers operators to grow, lead, and win.
We deliver high-impact, full-cycle tech solutions designed to scale. From seamless integration and expert consulting to long-term operational support, our platform powers millions of active players and drives real business growth. It's more than just a product — it's the iGaming Platform for Champions, built for those who play to lead.

We know the game and how to take it to the next level. With 1000+ talented professionals on board, we don't just build tech — we build success stories for iGaming operators all over the world.

Our ambition drives us, our people make it real. Join us and be part of building champion-level success
What You'll Be Driving:

  • Designing and implementing scalable and efficient software architectures;
  • Writing, testing, and debugging complex code for new and existing software applications;
  • Providing guidance and mentorship to junior engineers and team members;
  • Conducting thorough code reviews to ensure code quality, security, and adherence to best practices;
  • Creating and maintaining comprehensive technical documentation for software development and system design;
  • Leading and managing software development projects (shared responsibility with the Delivery Manager) to ensure timely delivery and quality;
  • Collaborating with cross-functional teams, including product management, design, and operations, to align development efforts with business goals;
  • Researching and implementing new technologies and methodologies to enhance software performance and streamline development processes;
  • Identifying and resolving complex software issues and technical challenges;
  • Developing and enforcing testing protocols to ensure software reliability and performance;
  • Driving continuous improvement in software development practices and processes;
  • Communicating effectively with stakeholders, including presenting technical concepts and project updates;
  • Delivering code to production in a timely manner according to business expectations.

What Makes You a GR8 Fit:

  • 3+ years of experience in automation testing;
  • Expertise in React and TypeScript — strong understanding of component architecture, hooks, and type safety;
  • Experience building scalable front-end solutions (multi-brand or modular architecture, shared component libraries);
  • Proficiency in front-end performance optimization — bundle analysis, caching, code-splitting, and rendering efficiency;
  • Practical experience with testing frameworks (Jest, React Testing Library);
  • Strong collaboration skills — ability to work closely with QA, backend, and product teams in Agile environments;
  • Ability to take ownership of complex features or domains and deliver end-to-end solutions;
  • Fluent in Ukrainian;
  • Intermediate level of English.

Why You'll Love Working Here:
Benefits Cafeteria
An annual fixed budget that you can use based on your needs and lifestyle. You decide how to allocate it:

  • Sports – gym, yoga, or any activity to keep you active;
  • Medical – insurance and wellness services;
  • Mental health– therapy or coaching support;
  • Home office – ergonomic furniture, gadgets, and tools;
  • Languages – courses to improve or learn new skills.

Work-life

  • Parental support with paid maternity/paternity leave and monthly childcare allowance;
  • 20+ vacation days, unlimited sick leave, and emergency time off;
  • Remote-first setup with full tech support and coworking compensation;
  • Regular team events – online, offline, and offsite;
  • Learning culture with internal courses, career development programs, and real growth opportunities.

Our Culture & Core Values
GR8 Tech culture is how we win. Behind every bold idea and breakthrough is a foundation of trust, ownership, and a growth mindset. We move fast, stay curious, and always keep it real, with open feedback, room to experiment, and a team that's got your back.

  • FUELLED BY TRUST: we're open, honest, and have each other's backs;
  • OWN YOUR GAME: we take initiative and own what we do;
  • ACCELER8: we move fast, focus smart, and keep it simple;
  • CHALLENGE ACCEPTED: we grow through challenges and stay curious;
  • BULLETPROOF: we're resilient, ready, and always have a plan.

To keep things efficient, please apply only for roles that closely match your experience.



  • Warszawa, Mazovia, Polska Sigma Software Pełny etat 60 000 zł - 80 000 zł rocznie

    Company Description We are looking for a Middle/Senior Front-end Developer to join our team and help us develop the best solutions for our clients.Working as a Front-end Developer on this project requires a mindset where we plan, build, and deliver together as a team. As a group, we take shared responsibility for delivery, including speed, efficiency, and...


  • Warszawa, Mazovia, Polska Kidsview - Developer View Concept Pełny etat 40 000 zł - 60 000 zł rocznie

    O stanowiskuJakoLead Front-End Developerbędziesz:Samodzielnie budował interfejs produktu typu EdTech - aplikacji i dziennika elektronicznego dla edukacji przedszkolnej i szkółDecydować o kierunkach rozwoju architektury front-endowejWspółpracował z zespołem UX/UI i backend, aby dostarczać produkt na najwyższym poziomieWspółpracował z zespołem...


  • Warszawa, Mazovia, Polska Tango Pełny etat 80 000 zł - 120 000 zł rocznie

    DescriptionTango is a successful, market leader, a live-streaming Platform with 450+ Million registered users, in an industry projected to reach $240 BILLION in the next couple of years.The B2C platform, based on the best-quality global video technology, allows millions of talented people around the world to create their own live content, engage with their...


  • Warszawa, Mazovia, Polska SIX Pełny etat 60 000 zł - 120 000 zł rocznie

    What sets us apart drives us ahead: between local roots and global relevance, we are a unique blend of tradition and future, of foundation and growth. We value bright minds and inspire them to grow with their ideas. Come and shape the future of finance with us. Senior Front-End Developer Warsaw | Working from home up to 40% possible | Reference 7441The SIX...

  • Front End Developer

    2 dni temu


    Warszawa, Mazovia, Polska fusionSpan Pełny etat 40 000 zł - 80 000 zł rocznie

    fusionSpan is a fast-growing US based multinational information technology services company, and we are seeking a front end Developer to join the team.We are looking for a Front-end Developer with strong expertise in Angular 17+ to build and maintain high-performance, scalable web applications.This is a long term contract role and can be an hourly or...

  • Front End Developer

    4 dni temu


    Warszawa, Mazovia, Polska Duett Pełny etat 40 000 zł - 60 000 zł rocznie

    About the department The development team in Traede ApS is currently based in Denmark and Poland, with our headquarters in Copenhagen. We work with high autonomy and tight collaboration across teams, ensuring we never sit in silos. Developers work side by side with onboarding, support, and sales to deliver a seamless product.Role ObjectiveAs a Front End...

  • Front-end Developer

    4 dni temu


    Warszawa, Mazovia, Polska Sensor Tower Pełny etat 40 000 zł - 80 000 zł rocznie

    Fraud warning: It's common for scammers to create positions that look legitimate on other sites.  To ensure your submission is considered, only apply for positions at Sensor Tower through our company website or through posts directly associated with Sensor Tower company profiles on sites such as LinkedIn, Indeed, BuiltIn or Hackajob. At no point will...

  • Front-End Developer

    2 tygodni temu


    Warszawa, Mazovia, Polska Brightstar Lottery Pełny etat 40 000 zł - 60 000 zł rocznie

    Location:Warsaw, PL, 00-807Requisition ID: 18142Brightstar is an innovative, forward-thinking global leader in lottery that builds on our renowned expertise in delivering secure technology and producing reliable, comprehensive solutions for our customers. As a premier pure play global lottery company, our best-in-class lottery operations, retail and digital...

  • Front-End Developer

    4 dni temu


    Warszawa, Mazovia, Polska Brightstar Lottery Pełny etat 40 000 zł - 80 000 zł rocznie

    Location:Warsaw, PL, 00-807Requisition ID: 18142Brightstar is an innovative, forward-thinking global leader in lottery that builds on our renowned expertise in delivering secure technology and producing reliable, comprehensive solutions for our customers. As a premier pure play global lottery company, our best-in-class lottery operations, retail and digital...

  • Front-end Developer

    4 dni temu


    Warszawa, Mazovia, Polska ALGOTEQUE Innovation Hub Pełny etat 40 000 zł - 60 000 zł rocznie

    ALGOTEQUE is an IT consultancy firm that helps startups, mid-sized and large corporations to create and deliver innovative technologies. Our team has a successful track record in designing, developing, implementing, and integrating software solutions (AI, ML, BI, Web, Automation) for Telecom, Energy, Bank, Insurance, Pharma, Automotive, Industry, e-commerce....