Sigma Software
Middle/Senior React Native Developer
Skills
1 month ago
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Important information
Contract type:
Permanent
Location:
Warsaw, Poland
Work mode:
Onsite
Published on:
11 September 2026
What they need
Join a fast-growing international project where your work will impact mobile products used by millions of users worldwide. We are looking for a Middle/Senior React Native Developer with strong mobile expertise and a product-oriented mindset to strengthen our distributed team.
At Sigma Software, you will collaborate with experienced engineers to build scalable and high-performing applications for the iGaming domain.
Why join us? We offer the opportunity to work with modern technologies, influence product development decisions, and grow professionally in a collaborative engineering culture.
CUSTOMER
Our Customer is one of Europe’s largest GameTech companies and the owner of one of the biggest mobile gambling platforms with millions of active users worldwide. The company combines enterprise-scale products with a startup-like approach to innovation and product delivery.
PROJECT
You will join a team developing modern mobile applications for globally recognized iGaming brands. The project focuses on delivering high-quality user experiences, supporting new product launches, and expanding existing brands into new international markets. The team follows a mobile-first approach and values ownership, collaboration, and engineering excellence.
Develop and maintain React Native applications for iOS and Android platforms
Ensure smooth and engaging mobile user experiences
Collaborate with cross-functional teams to deliver high-quality solutions
Improve and maintain existing applications with a product-oriented mindset
Contribute to launching new brands and expanding products into new markets
Participate in technical discussions and suggest improvements across the development process
Take ownership of application quality, performance, and stability
3+ years of commercial experience with React Native development
Strong knowledge of React and React Native
Experience with TypeScript
Knowledge of GraphQL
Experience with GitHub or other version control systems
Understanding of mobile-first development principles
Experience working with iOS and Android applications
Upper-Intermediate level of English
WILL BE A PLUS
- Experience writing unit tests
- Understanding of native mobile development
- Experience working in product-oriented teams
- Knowledge of CI/CD practices for mobile applications
PERSONAL PROFILE
- Strong ownership mindset
- Team-oriented approach to development
- Proactive communication skills
- Attention to detail and quality
- Ability to drive initiatives independently
- Willingness to learn and share knowledge
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