Mobile Developer (all genders)

F24

Zagreb / HR permanent

Posted: March 23, 2026

Required Skills

Job Description

About the job:
Experienced Mobile Developer who will take ownership of complex features and serve as technical authority. Works with Product Owners to translate business requirements into scalable, secure mobile solutions.

You:
Key Responsibilities
Feature Ownership & Delivery
• 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

Continuous Improvement
• 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

Required Qualifications
Experience
• Minimum 3+ years of professional software development
• Minimum 3+ 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

Technical Expertise – Mobile Stack
• 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

Cross-Stack Competencies
• 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)

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

Soft Skills
• 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

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