Senior Mobile Application Developer / Technical Lead (iOS & Android)TelcoVillage GmbH • Berlin, Berlin, Germany
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Senior Mobile Application Developer / Technical Lead (iOS & Android)
TelcoVillage GmbH
- Berlin, Berlin, Germany
- Berlin, Berlin, Germany
About
We are seeking an experienced *Senior Mobile Application Developer / Technical Lead* to join our team in Berlin. You will be responsible for the technical design, development, and delivery of mobile applications for *iOS and Android*, while also leading and coordinating other developers involved in the projects.
The role combines hands-on development, technical leadership, and close collaboration with designers and testers. As we operate in the *telecommunications sector*, experience or a strong interest in telecom-related technologies is a significant advantage.
*Key ResponsibilitiesMobile Application Development*
* Design, develop, and maintain high-quality iOS and Android applications
* Build applications with network connectivity, user authentication, and backend integration
* Integrate internal and external APIs, including:
* User accounts and authentication services
* Statistics and analytics platforms
* License servers
* Webshop and payment providers
* Device- and OS-specific phone functions
* Ensure performance, reliability, security, and scalability
*Technical Leadership & Team Coordination*
* Take ownership of technical execution
* Plan, structure, and distribute development tasks
* Review and evaluate code from other developers
* Ensure efficient workflows and timely delivery
* Apply and enforce development standards
*AI-Assisted Development*
* Use AI-powered tools to:
* Accelerate coding and prototyping
* Support debugging and troubleshooting
* Improve documentation and code quality
* Apply AI tools responsibly and securely
*UI / UX Collaboration*
* Work closely with UI/UX designers
* Communicate effectively to integrate designs
* Deliver polished user interfaces and experiences
*Quality Assurance & Troubleshooting*
* Debug and troubleshoot on physical iOS and Android devices
* Coordinate beta testing activities
* Identify, document, and resolve issues
* Maintain structured testing protocols
*Documentation & Best Practices*
* Write clean, maintainable, and well-documented code
* Maintain technical documentation
* Follow best practices in architecture, version control, security, testing, and deployment
*Telecommunications Knowledge (Advantageous)*
* Voice over Wi-Fi (VoWiFi)
* Telephony Manager and Android telephony APIs
* OMAPI
* eSIM and SIM-related technologies
* SIP
* Mobile core network concepts such as HLR and HSS
*Required Skills & Experience*
* Strong experience in mobile development for iOS and Android
* Experience with APIs and backend integration
* Experience reviewing and managing other developers’ code
* Strong troubleshooting skills
* Experience using AI tools for software development
* Excellent communication and documentation skills
* Willingness to work on-site in Berlin during onboarding
*Nice to Have*
* Experience as a technical or team lead
* Telecommunications background
* App Store and Google Play release experience
* CI/CD experience
* Beta testing and release management experience
*What We Offer*
* Permanent employment in Berlin, Germany
* On-site collaborative working environment
* Opportunity to influence technical decisions
* Close cooperation with designers and developers
* Option for home office after onboarding
* Long-term projects in the telecommunications sector
Job Type: Full-time
Experience:
* Software Development: 5 years (Required)
Work Location: In person
Languages
- English
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