(Senior) Mobile Developer (React Native) – OneRail Technology Hub - Krakow, Poland

OneRail; Kraków; Hybrid; PLN 240,000 - 320,000; Full time

Job summary

A tech company specializing in logistics is seeking a (Senior) Mobile Developer to design and develop cutting-edge applications using React Native. Candidates with strong React Native experience, an understanding of mobile application lifecycle, and excellent communication skills are encouraged to apply. The role offers a competitive salary and the option for a flexible hybrid work style in Kraków, Poland.

Benefits

Flexible hybrid work style

Career growth opportunities

Competitive compensation package

Qualifications

• Strong commercial experience with React Native and the React ecosystem.
• Experience integrating APIs (REST, GraphQL) and handling offline data.
• Advanced proficiency in English, both written and spoken (B2+).

Responsibilities

• Design and develop advanced mobile applications using React Native.
• Identify and resolve performance bottlenecks, memory leaks, and UI glitches.
• Participate in code reviews, testing, and debugging to ensure high code quality.

Skills

React Native

State management (Redux, MobX, Zustand)

API integration

Agile methodologies

Problem-solving skills

Communication skills

Education

4+ years in mobile apps development

Tools

AsyncStorage

SQLite

Job description

Overview

(Senior) Mobile Developer (React Native) – OneRail Technology Hub - Kraków, Poland

OneRail is a technology company innovating solutions for multi-modal delivery. We have built and continue to develop a delivery orchestration platform that connects shippers to an extensive courier ecosystem to automate, optimize, and control the entire delivery supply chain, from the demand signal to the proof of delivery. Our OmniPoint SaaS platform uses proprietary algorithms and artificial intelligence to power efficient same-day delivery programs for major companies like Lowe’s, Pepsi, American Tire Distributors, and Advance Auto Parts. In this role, you will work closely with product owners, designers, and other developers to build and maintain high-performance applications that run on iOS and Android platforms. If you have a passion for single code base development, a strong background in React Native, and enjoy working in a team-oriented environment, we encourage you to apply.

Key Responsibilities

• Design and develop advanced mobile applications using React Native.
• Integrate APIs.
• Implement modern UI/UX designs with pixel-perfect precision across iOS and Android.
• Write clean, modular, well-tested code following architecture patterns and best practices typical for mobile apps development.
• Identify and resolve performance bottlenecks, memory leaks, and UI glitches.
• Implement native modules and platform-specific integrations (camera, geolocation, push notifications, local storage).
• Participate in code reviews, testing, and debugging to ensure high code quality and reliability.
• Assist in automating deployment processes and improving CI/CD pipelines.
• Stay updated with industry trends and emerging technologies to continuously improve our platform.

Qualifications

• 4+ years (8+ years for senior position) of experience in mobile apps development, with a focus on efficiency optimization and code reuse.
• Strong commercial experience with React Native and the React ecosystem.
• Experience with state management (Redux, MobX, Zustand, or similar).
• Familiarity with React Navigation and deep linking.
• Experience integrating APIs (REST, GraphQL) and handling offline data (e.g., AsyncStorage, SQLite, Realm).
• Understanding of app lifecycle management, background tasks, and push notifications.
• Experience with platform-specific integrations (e.g., camera, geolocation, local storage).
• Understanding of mobile security best practices.
• Familiarity with mobile app design principles and UI/UX best practices.
• Familiarity with publishing to App Store and Google Play.
• Understanding of cloud services (AWS, GCP, or Azure).
• Experience with data persistence.
• Experience with Agile methodologies and CI/CD practices.
• Strong problem-solving skills and ability to work in a fast-paced environment.
• Excellent communication and collaboration skills.
• Advanced proficiency in English, both written and spoken (B2+).

Why Join OneRail Poland?

• Innovation at its Core: Work on industry-leading technology that is shaping the future of logistics.
• Career Growth: Opportunities for professional development and career advancement.
• Collaborative Culture: Join a team of talented engineers and industry experts.
• Exciting Challenges: Solve complex problems and contribute to impactful projects.
• Flexibility: We offer a flexible hybrid work style and flexible employment types to suit your needs, ensuring a work-life balance that works for you.
• Competitive Compensation: Attractive salary and benefits package.

Office location

Kraków, Poland

Work Style

Hybrid (2-3 days from the office per week preferred). We are open to a more flexible arrangement for candidates located outside the Krakow area.

Salary levels

18 000 – 22 000 PLN/month (regular), 20 000 – 28 000 PLN/month (senior)

Job details

• Seniority level: Mid-Senior level
• Employment type: Full-time
• Job function: Engineering and Information Technology
• Industries: Transportation, Logistics, Supply Chain and Storage

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