Senior React Native Engineer with Node.js - Tieto Tech Consulting

Senior React Native Engineer with Node.js - Tieto Tech Consulting

MentorMate

Veliko Tarnovo, Bulgaria

Job Description

We are looking to hire a Senior React Native Engineer to join our growing team and contribute to the development of high-quality mobile applications for an AI-based healthcare platform that supports the optimization of clinical trials and improves the patient experience. This role is ideal for someone who thrives in a collaborative environment, enjoys solving complex problems, and is passionate about delivering impactful, meaningful solutions.

Responsibilities

• Architect, develop, and maintain scalable mobile applications using React Native;
• Design and implement responsive, user-friendly interfaces with a strong focus on performance, usability, and accessibility;
• Collaborate with product, design, and backend teams to deliver end-to-end features aligned with business requirements;
• Develop and maintain backend services and REST APIs using Node.js;
• Develop and deliver features for platforms that enable patients to measure, monitor, and track their health status, including integration with medical devices;
• Use modern, agentic coding practices to efficiently develop features and diagnose/debug complex issues;
• Implement and manage state using Redux and Redux Toolkit for scalable and predictable data flow;
• Apply modern JavaScript (ES6+) and clean architecture principles to build maintainable and reusable codebases;
• Optimize application performance, responsiveness, and stability across devices and network conditions;
• Ensure code quality through unit testing, code reviews, and adherence to best practices;
• Debug and resolve production issues to maintain application reliability;
• Stay updated with emerging trends and best practices in React Native and mobile development;
• Use agentic coding practices to develop and debug issues;
• Develop features for platforms that allow patients to measure and track their health status and read data from medical devices.

Requirements

• 5+ years of professional experience in JavaScript/TypeScript development;
• 3+ years of hands-on experience building mobile applications with React Native;
• Strong experience with Node.js and developing scalable backend services and RESTful APIs;
• Solid understanding of modern JavaScript (ES6+) and TypeScript best practices;
• Proven expertise in state management using Redux and Redux Toolkit;
• Experience designing, integrating, and consuming RESTful APIs;
• Familiarity with CI/CD pipelines and mobile app deployment processes (App Store and Google Play);
• Experience working with AI-assisted development tools and coding agents (e.g., Claude Code or similar);
• Strong problem-solving skills with a keen attention to detail;
• Excellent communication and collaboration skills, with the ability to work effectively in cross-functional teams;
• Excellent spoken and written English language skills.

A significant advantage would be

• Experience integrating Bluetooth technologies (e.g., BLE devices, wearable tech) into mobile applications;
• Familiarity with native module development and bridging between React Native and native iOS/Android code;
• Knowledge of accessibility standards and inclusive design best practices;
• Experience with analytics, crash reporting, and monitoring tools (e.g., Firebase, Sentry);
• Familiarity with Node.js frameworks such as Express or NestJS.