Senior/Mid React Native Engineer – Tieto Tech Consulting (m/f/d)

A part of global technology organization Tieto, MentorMate creates durable technical solutions that deliver digital transformation at scale by blending strategic insights and thoughtful design with brilliant engineering. With mature and established practices in enterprise web and mobile development, quality engineering, technical architecture, human-centered design, cloud, DevOps, data, and analytics, the company provides its people with the opportunity to work on impactful, global projects for recognizable brands. We value every team member and share our success through flexible working models, competitive pay and benefits, and advancement opportunities in a team of thousands of experts located around the globe.

About the role

We are looking to hire a React Native Engineer to join our growing team and lead the development of high-quality mobile applications. You will play a key role in designing and implementing scalable, performant, and user-friendly mobile solutions using React Native, with a strong emphasis on modern JavaScript (ES6+), state management, and clean architecture. This role is ideal for someone who thrives in a collaborative environment, enjoys solving complex problems, and is passionate about delivering impactful solutions.

Responsibilities

• Architect, develop, and maintain mobile applications using React Native
• Collaborate with cross-functional teams including product, design, and backend engineers
• Implement and manage state management using Redux and Redux Toolkit
• Ensure code quality through unit testing, code reviews, and adherence to best practices
• Optimize application performance and responsiveness across platforms
• Stay up-to-date with the latest mobile development trends and technologies
• Mentor junior developers and contribute to team growth

Requirements

• 5+ years of professional experience in JavaScript/TypeScript
• 3+ years of hands-on experience with React Native
• Strong understanding of ES6+ features and modern JavaScript practices
• Deep knowledge of Redux, Redux Toolkit, and application state management
• Experience with RESTful APIs, mobile UI/UX patterns, and performance optimization
• Familiarity with CI/CD pipelines and mobile app deployment (App Store / Google Play)
• Excellent problem-solving skills and attention to detail
• Strong communication and collaboration skills

A significant advantage would be

• Hands-on experience with Bluetooth integrations (e.g., BLE devices, wearable tech)
  Familiarity with native modules and bridging between React Native and native code (iOS/Android)
• Knowledge of accessibility standards and inclusive design practices
• Experience with analytics, crash reporting, and monitoring tools

Additional Information

At Tieto, we believe in the power of diversity, equity, and inclusion. We encourage applicants of all backgrounds, genders (m/f/d), and walks of life to join our team, as we believe that this fosters an inspiring workplace and fuels innovation. Our commitment to openness, trust, and diversity is at the heart of our mission to create digital futures that benefit businesses, societies, and humanity.

Diversity, equity and inclusion (tietoevry.com)

We are Tieto – A leading software and technology consulting company

We provide customers across different industries with mission-critical solutions through our specialized software businesses Tieto Caretech, Tieto Banktech and Tieto Indtech as well as Tieto Tech Consulting business.

Our around 14 000 talented vertical software, design, cloud and AI experts are dedicated to empowering our customers to succeed and innovate with latest technology.

Tieto’s annual revenue is approximately EUR 2 billion. The company’s shares are listed on the NASDAQ exchange in Helsinki and Stockholm, as well as on Oslo Børs.