Bluegeko

Senior Mobile Developer — B2B Contract | Warsaw | Start Immediately

$6,000/month · Full-time · In-office · Relocation Bonus · Milestone Bonuses

The Opportunity

We're building a modern mobile application that connects to real-world access control and operational systems—secure authentication, biometrics, Bluetooth Low Energy (BLE), payments, and reporting.
 

We're looking for a hands-on Senior Mobile Developer to own the mobile application, ship features quickly, and work directly with our CEO alongside an experienced .NET backend team.

This starts as a B2B contract with genuine long-term potential to grow into architecture, technical leadership, and team management as the product expands.

This is a senior-level role only. We require someone with a proven history of shipping production mobile applications. Applicants must be able to demonstrate live apps currently available in the App Store or Google Play. Junior and mid-level candidates will not be considered.

What You'll Build

• Mobile applications (iOS, Android, or cross-platform) built for production
• Work on Authentication, biometrics, push notifications, and BLE functionality
• API integrations with our .NET/C# backend team
• Customer portal, payments, and reporting integrations
• Work directly with the CEO and core engineering team with fast decision-making and minimal bureaucracy

What You Bring

• Proven track record: Live mobile applications currently in production with App Store, Google Play, or portfolio links
• Strong senior-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
• Based in Warsaw or willing to relocate
• Available to start immediately

Nice to Have (Not must)

• .NET / C# basic experience
• CRM/CMS basic experience (e.g. Umbraco)
• Access control or IoT integration experience
• Bluetooth Low Energy (BLE) hardware basic experience
• Interest in growing into a technical leadership position

What's In It for You

• $6,000/month (B2B Contract)
• Relocation bonus for candidates moving to Warsaw
• Milestone bonuses for major product deliveries
• 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.

Interview process takes days, not weeks.