Middle/Senior React Native Developer
Back to Jobs
Sigma SoftwareGet Smart Job AI Coach in the appFree on iOS and Android

Middle/Senior React Native Developer
Location
Warsaw, Masovian Voivodeship, Poland
Experience
Mid
Posted
Jul 28, 2026
Apply by
August 27, 2026
Applicants
0
Early applicantEasy applyFull-timeWork from Office
Job 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
Key Responsibilities
- 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
Skills Required
React NativeReactTypeScriptGraphQLGitHubiOSAndroidOwnership mindsetTeam-oriented approachProactive communicationAttention to detailAbility to drive initiatives independentlyUnit testingNative mobile developmentCI/CD practicesProduct-oriented mindsetWillingness to learnKnowledge sharing
App exclusive · Free
Smart Job AI Coach
Your personal interview coach on every job — readiness tips, profile improvements, and role-specific prep. Available only in the Pulse Job app.
Interview readiness
See how prepared you are and what to improve for each role.
Personalized tips
Actionable suggestions based on your profile and the job.
After you apply
Keep coaching momentum from job detail through application success.