Lead React Native Developer

Overview
Technical Lead, Mobile Engineering is a hands-on technical leadership role responsible for shaping and scaling OneRail’s mobile application ecosystem that powers real-time last mile orchestration, driver workflows, and enterprise delivery visibility. This role exists to ensure our mobile solutions are reliable, performant, and resilient in real-world logistics environments where connectivity may fluctuate and operational precision is critical.

Responsibilities
• Own and evolve the architecture of OneRail’s mobile applications built in React Native with native iOS and Android integrations.
• Lead the design and implementation of scalable, high-performance mobile solutions supporting real-time logistics workflows.
• Partner closely with Product and Design teams to translate business requirements into intuitive, reliable mobile experiences for drivers and operational users.
• Ensure application performance, responsiveness, quality, and stability in production environments.
• Establish and enforce engineering standards for code quality, testing, observability, security, and CI/CD pipelines.
• Conduct and contribute to regular code reviews to maintain high engineering standards.
• Build and maintain reusable software components, shared libraries, and mobile infrastructure that integrate with backend.
• Analyze, benchmark, and optimize mobile applications for performance, scalability, and efficiency.
• Balance feature development with technical debt reduction and long-term platform sustainability.
• Improve developer experience through tooling enhancements, workflow automation, and release process optimization.
• Mentor and develop mobile engineers, supporting skill growth and career progression.
• Support hiring, onboarding, and retention of top mobile engineering talent.

Qualifications
• 8+ years of professional software engineering experience, including significant hands-on mobile development.
• 2+ years of experience in technical leadership or team lead capacity.
• Strong experience building and scaling React Native applications in production environments.
• Solid understanding of native mobile platforms (iOS and Android) and their integration with cross-platform frameworks.
• Proficiency in React Native, TypeScript
• Experience designing and consuming RESTful APIs and real-time service integrations.
• Strong problem-solving skills with the ability to balance business priorities and technical excellence.
• Excellent communication and collaboration skills (Polish B2+ & English B2+)

Office location: Kraków, Poland
Work Style: hybrid (2-3 days from the office / week).
Salary level: 28 000 – 32 000 PLN/ month