Senior .Net Developer (Mobile)

Full-time in-house role in Warsaw
Salary up to $7,000/month
Relocation / Visa Assistance (If need)

A leading logistics and storage company is seeking a Senior Mobile Developer / .NET Technical Lead to own and deliver a major mobile-first technology platform. This hands-on leadership role will drive the development of a secure customer mobile app integrated with operational systems, access control, payments, reporting, and a .NET-based backend platform.

Key Responsibilities

• Lead the design and delivery of the mobile application
• Build secure features including authentication, biometrics, permissions, push notifications, and Bluetooth Low Energy (BLE)
• Integrate mobile, web, CRM/CMS, payment, reporting, and operational systems
• Design APIs and help shape .NET/C# backend architecture
• Define technical standards, documentation, and delivery processes
• Work directly with the CEO and leadership team
• Help build and lead the engineering team as the platform grows

Requirements

• Mobile Experience (Important)
• Strong commercial experience developing and shipping mobile applications
• Experience with mobile security, biometrics, push notifications, BLE, and API-driven architectures
• Solid .NET/C# backend understanding
• Experience integrating third-party systems and operational platforms
• Knowledge of CRM, CMS, ERP, payments, reporting, and cloud infrastructure
• Strong ownership, documentation, and security mindset
• English or Polish Language Spoken

Nice to Have

• Umbraco or similar CRM/CMS platforms
• Access control or hardware integrations
• Logistics, storage, facilities, or operational technology experience
• Previous technical leadership or architecture ownership

What We Offer

• Full-time in-house role in Warsaw
• Salary up to $7,000/month
• Relocation Assistant
• Modern office environment
• Direct access to senior leadership
• Long-term strategic technology project
• Real ownership of product and platform direction
• Opportunity to build and lead a team
• Performance-based bonuses
• Possible visa/work permit sponsorship for Ukrainian or other EU candidates

Role Summary

You will lead the development of the company's core mobile platform, integrating customer-facing applications with backend systems, access control, and operational infrastructure while helping shape the future technology strategy of a growing logistics business.