Senior .NET / Mobile Technical Lead

Senior .NET / Mobile Technical Lead (WARSAW)

Location: Warsaw, Poland
Employment Type: Full-time, In-House (On-Site Only)
Salary: Up to $6,500/month equivalent, depending on experience, plus performance-based bonuses

Note: Potential residency and visa work permit sponsorship for Ukrainian or other candidates.

About the Role

One of the largest logistics and storage companies in the region is building a modern technology platform to replace dependency on legacy operational software.

We are looking for a senior mobile technical lead to work directly with the CEO and leadership team, define the architecture, build the platform foundation, and deliver a mobile application integrated with core business systems.

The platform will connect customer-facing and operational services, including the website, customer portal, mobile app, access control systems, payments, reporting, and notifications through a modern API-driven architecture.

Responsibilities

• Own mobile technical architecture and technology decisions
• Build the core platform foundation and integration layer
• Design and implement APIs between business-critical systems
• Lead development of the mobile application, including:
  • Secure authentication
  • Biometrics
  • Device-level security
  • Push notifications
  • Bluetooth Low Energy (BLE) integrations
• Establish development standards and technical documentation
• Evaluate and select appropriate technologies, platforms, and integrations

Requirements

• Strong commercial experience with .NET and C#
• Proven experience delivering mobile applications in a commercial environment
• Hands-on knowledge of security, biometrics, permissions, push notifications, and BLE
• Experience designing and integrating APIs
• Experience building or leading business-critical software platforms
• Understanding of CRM, CMS, ERP, or operational systems
• Recent experience with CMS/CRM-style platforms, preferably Umbraco
• Strong knowledge of databases and cloud infrastructure
• Ability to work independently and take ownership of delivery
• Comfortable working directly with senior stakeholders

Nice to Have

• Experience with access control systems or hardware integrations
• Experience with payment systems, customer portals, reporting, or notification platforms
• Team leadership, mentoring, or hiring experience
• Experience creating architecture standards and delivery processes

What We Offer

• Modern office environment in Warsaw
• Direct access to decision-makers
• Long-term strategic project with visible business impact
• Full ownership of technical direction
• Opportunity to build and lead a development team