Full-Stack Mobile Engineer (React Native)

🚀 Full-Stack Mobile Engineer (React Native)

 Location: Poland (Hybrid)

Contract Type: Full-Time, B2B

Join the Future of Digital Tech with Kolomolo

At Kolomolo, we don’t just follow trends - we set them. As a global supplier of IT services and digital modernization solutions, we help businesses embrace cutting-edge technology to optimize their operations. Now, we are growing and looking for fresh talent to grow with us.

Are you proactive, tech-savvy, and eager to build your career in IT? This role could be your perfect fit.

About the Role

We are seeking a highly experienced Full-Stack Mobile Engineer (React Native) to join our team and take ownership of building and scaling mobile applications from end to end. This role blends deep expertise in mobile app development with strong backend engineering skills, ensuring seamless integration, high performance, and exceptional user experience across platforms. The ideal candidate is a hands-on engineer with a proven track record of delivering production-grade applications, thriving in agile environments, and collaborating closely with cross-functional teams. This is a key position for someone who is passionate about designing robust architectures, writing clean and maintainable code, and driving full lifecycle delivery: from concept to deployment and beyond.

What You’ll Be Doing

• Architect, build, and maintain mobile applications using React Native, ensuring high-quality UX for both iOS and Android.

• Develop and extend backend services (e.g., RESTful APIs, Node.js or similar).

• Integrate mobile app with backend systems, including databases, authentication, and third-party APIs.

• Write maintainable, performant, and modular code across frontend and backend.

• Own end-to-end delivery: from UI/UX behavior to backend architecture, deployment, QA, and performance.

• Participate in code reviews, triage bugs, and optimize both features and performance.

• Collaborate with product, design, and QA teams using agile methodologies (e.g., Scrum, Kanban).

  
  

 What We Are Looking For

• 8+ years of professional experience in software development, with a strong focus on full-stack work.

• Deep proficiency with React Native, including native modules, debugging, performance tuning, and cross-platform nuances.

• Solid backend experience, preferably in Node.js or a similar ecosystem.

• Strong knowledge of TypeScript for building scalable and maintainable applications.

• Familiarity with building and consuming RESTful APIs, and handling data synchronization, offline use, and push notifications.

• Strong understanding of database systems (e.g., PostgreSQL, MongoDB, or equivalent).

• Experience with typical mobile app features: local storage, background sync, device integration, and state management patterns (e.g., Redux, Context API, MobX).

• Demonstrated ability to bring mobile apps to production, including CI/CD pipelines, testing frameworks (e.g., Jest, Detox, Mocha), and deployment workflows.

• Hands-on experience with Docker/containers for development and deployment.

• Excellent problem-solving, communication, and collaboration skills.

What is in It for You

•  Competitive salary and benefits.

•  Career development opportunities in a growing tech company.

•  Continuous learning culture: mentorship, internal training, and certifications.

•  Flexible, agile work environment (remote, hybrid, or on-site in Kraków.

•  Office perks: great coffee, tea, fresh fruit, snacks, and a fun atmosphere.

•  Flat management structure, where your voice matters.

•  Regular team events and a social, supportive work culture.

•  B2B contract or Contract of Mandate (Umowa Zlecenie).

🌟 Why Join Kolomolo?

At Kolomolo, we prioritize innovation, agility, and autonomy. Our teams have the freedom to own their work, share ideas, and make meaningful contributions. Inspired by Scandinavian values, we believe in work-life harmony and creating an inclusive culture where everyone thrives.

You will be part of a passionate, skilled, and friendly team that works hard and celebrates together. Here, you can build your career on your own terms, with opportunities to grow, learn, and make a real impact.

Our Flat Structure & The Culture of Inclusion 

At Kolomolo, we break the corporate mold. We offer:

• Agile Teams & Autonomy: No micromanagement. You’ll own your projects and enjoy the freedom to innovate.

• Work-Life Harmony: Inspired by Scandinavian values, we prioritize balance and flexibility, where remote work and asynchronous collaboration are in our DNA.

• Learning & Growth: Continuous learning is at our core. We reward hard work, value smart ideas, and foster an environment of mutual respect and trust.

• Inclusive Culture: We believe in DEI: diversity, equity and inclusion. We are committed to creating an environment where every individual, regardless of background, identity, or experience feels valued, respected, and empowered to thrive.