Posted 14 days ago
Middle/Senior Frontend Developer (React + TypeScript)
AI Summary
Middle/Senior Frontend Developer building and maintaining responsive web applications for a large European GameTech company, collaborating with designers and backend developers on a modern mobile gambling platform.
About this role
Middle/Senior Frontend Developer (React + TypeScript)
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 quality. We also take full responsibility for the operational condition of what we deliver.
As an individual, you’re expected to take ownership, drive initiatives forward, suggest, and incorporate improvements across all areas.
Does this sound like you? Take your chance and grow with us.
CUSTOMER
Our client is one of Europe’s biggest GameTech companies and owns of one of the largest mobile gambling platforms, with millions of users. It is a big company that follows a startup approach. The technology stack is modern and up-to-date.
- Develop and maintain responsive web applications using React and TypeScript
- Collaborate with designers and Back-end developers to deliver seamless user experiences
- Work with GraphQL for data fetching and manipulation
- Build modern and accessible UI components using Material UI or similar libraries
- Participate in code reviews, sprint planning, and product discussions
- Contribute to continuous improvements in performance and code quality
Qualifications
- At least 3 years of experience as a Front-end Developer
- Hands-on experience with JavaScript and TypeScript
- Experience with React
- Good knowledge of GraphQL
- Experience with Material UI
- Experience with GitHub and/or other version control systems
- Upper-Intermediate level of English
Skills
Explore related jobs
More jobs at Sigma Software
Similar GitHub jobs
Jobs in Warsaw
Kosztorysant budowlanyInfrafly · Warsaw, Poland
HR Operations LeadTickmill · Warsaw, Warsaw- DPU Datapath Engineer, Validation & AutomationCoreWeave Europe · Warsaw, Poland
- C# Developer (Veeam Backup for Hypervisors)Veeam Software · Warsaw, Poland
Customer Support Associate - Warsaw (hybrid) - Fluent in Polish and EnglishConvera · Warsaw- Cash Management AnalystNielseniq · Warsaw, 30
Browse these categories
Market data for frontend engineer roles
All reports →- SeriesRole reportsOne role family at a time: how many openings, what changed this week, who is hiring, what it pays.
- SeriesSalary reportsWhat employers publish in job postings, by level and workplace. Not self-reported pay.
- Market overviewState of tech hiring, September 2026: up 4.8%Tech hiring rose 4.8% month over month in September 2026, with 411,122 new listings. Customer support and account executive roles led the growth.