Middle/Senior React Native Developer
Sigma Software · Warsaw, Masovian Voivodeship, Poland
Software Development · 1,001-5,000 employees
About the role
Develop and maintain high-performance React Native applications for iOS and Android within the iGaming domain. Collaborate with cross-functional teams to launch new brands and ensure a high-quality mobile user experience.
What they look for
Requirements
Requires over 3 years of commercial experience with React Native, TypeScript, and GraphQL. Candidates should have a strong understanding of mobile-first principles and an upper-intermediate level of English.
Full description
Company Description
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.
Job Description
- 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
Qualifications
- 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
Additional Information
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
