Senior Mobile Developer

Overview

Experienced developer to lead technical initiatives, mentor junior team members, and drive architectural decisions. Will take ownership of complex features and serve as technical authority. Works with Product Owners to translate business requirements into scalable, secure mobile solutions.

Experienced developer to lead technical initiatives, mentor junior team members, and drive architectural decisions. Will take ownership of complex features and serve as technical authority. Works with Product Owners to translate business requirements into scalable, secure mobile solutions.

• Design and implement scalable, secure, cloud-native mobile solutions
• Drive architectural decisions and evaluate technology trade-offs
• Establish coding standards and best practices for cross-platform and native development
• Conduct code reviews and ensure quality adherence
• Lead technical discussions on complex problems

• Mentor Professional and Junior developers
• Document technical decisions and architectural approaches
• Share knowledge through technical talks or pair programming
• Guide team on security and cloud-native best practices
• Teach both React Native and native development considerations

• Take ownership of complex features from design through production
• Work with Product Owner to refine requirements
• Estimate and execute deliverables reliably
• Identify technical risks early and propose mitigation
• Ensure features meet security, performance, and scalability requirements
• Manage app store release processes

• Identify opportunities for technical optimization and refactoring
• Evaluate new tools, frameworks, and approaches
• Propose improvements to development processes
• Stay current with iOS and Android platform updates

• Minimum 7+ years of professional software development
• Minimum 4+ years with React Native + Native iOS/Android development
• Proven experience designing scalable mobile systems
• Strong track record shipping production apps reliably
• Experience mentoring or leading other developers
• Familiarity with app store deployment processes

• Expert-level React Native with deep understanding of native bridge and platform-specific considerations
• Strong iOS development:
  Swift, native APIs, performance optimization, App Store deployment
• Strong Android development:
  Kotlin/Java, native APIs, performance optimization, Google Play deployment
• State management expertise (MobX or Redux patterns)
• Mobile-specific skills: offline-first design, performance optimization, memory management, battery efficiency
• Firebase proficiency: authentication, real-time databases, cloud functions, analytics
• HTTP/REST clients (Axios), local data persistence (Realm)
• Understanding of app store processes and mobile-specific security
• Native iOS/Android build processes and CI/CD for mobile

• Expert REST API design and best practices
• Strong security knowledge: authentication, authorization, encryption, mobile security threats
• Cloud-native architecture patterns: microservices, distributed systems, resilience
• CI/CD pipelines for mobile, automated testing strategies (unit, integration, E2E)
• Basic understanding of AI/ML concepts (ideal)

• Experience with Python, PHP, Node.js, Java, or other backends
• Ability to understand backend architecture implications

• Excellent communication in English and German
• Ability to articulate complex technical concepts clearly
• Strong problem-solving and analytical thinking
• Mentoring and coaching capabilities
• Proactive, self-directed, takes ownership
• Comfortable with ambiguity and rapid change