Senior Mobile Developer
Senior Mobile Developer — B2B Contract | Warsaw | Start Immediately
The Opportunity
This is a senior-level position. Candidates must have a proven track record of building and shipping production mobile applications for iOS and Android. You should be able to demonstrate live applications in the App Store or Google Play, or provide clear evidence of equivalent commercial applications where public links are unavailable.
We are looking for a hands-on Senior Mobile Developer to take ownership of our mobile application, deliver production-ready features, and work directly with the CEO alongside an experienced .NET backend team.
The role starts as a B2B contract, with genuine long-term potential to grow into mobile architecture ownership, technical leadership, and team management as the product and engineering team expand.
What You Bring
- Proven track record: Live mobile applications currently in production with App Store, Google Play, or portfolio links
- Strong level commercial mobile development experience
- Experience integrating APIs into production mobile applications
- Knowledge of authentication, permissions, push notifications, mobile security, and Bluetooth Low Energy (BLE)
- Ability to work independently and deliver high-quality software
What's In It for You
- $6,000/month (B2B Contract)
- + Relocation bonus for candidates moving to Warsaw
- + Rewarding Milestone bonuses for product deliveries
- OnSite New Modern office in Warsaw
- Direct access to the CEO
- Fast-moving environment with minimal bureaucracy
- Long-term career growth as the engineering team expands
Applications without proof of shipped production apps will not be considered.
Start immediately.
- What You Bring
- Proven track record: Live apps you've shipped that are currently in production, with a portfolio or App Store/Google Play links to prove it.
- Strong senior-level commercial experience—this is not an entry-level role.
- Comfortable working with APIs and collaborating with a backend team (bonus if you know .NET/C#).
- Working knowledge of mobile security fundamentals: authentication, permissions, push notifications, and BLE.
- Independent, clear communicator who delivers.
- Based in Warsaw or willing to relocate, and available to start immediately.