Senior Full Stack Developer (React.js Node.js)

About The Job

As a specialist in electronics and software for the past 20 years, in-tech is a dynamic, fast-growing engineering company headquartered in Munich, Germany employing around 2350 employees globally across 20 project locations in 8 countries.

in-tech develops innovative engineering solutions for the automotive, rail, aerospace, defence, and industrial sectors.

We are committed to a flexible, modern work culture and work-life balance. Our colour orange stands for liveliness, warmth, and dynamism. We value a strong team spirit, fresh ideas and a positive work culture. We call it the Orange Spirit!

Since 2024, in-tech became a subsidiary of Infosys Ltd. This strategic partnership enables us to offer our customers even more comprehensive development and digitalisation services and a greater offshore capability.We are seeking a Senior Full Stack Developer with recent, hands-on experience building and scaling modern web applications. You will own features end-to-end—from React/TypeScript UI development to Node.js services—with a strong focus on performance, reliability, and efficient processing of large volumes of data. If youre passionate about joining a growing and dynamic team with a company with a positive culture and team spirit, wed love to connect with you!

Responsibilities

• Build and maintain scalable web applications (frontend & backend).
• Develop responsive, high-performance UIs using React.js, JavaScript (ES6+), and TypeScript.
• Create secure and performant APIs/services in Node.js.
• Design and optimize MongoDB schemas, queries, and indexes.
• Implement solutions for large-scale data handling (pagination, caching, memory-efficient processing).
• Drive code quality through reviews, testing, and documentation.
• Mentor and support team members in best practices.
• Collaborate with cross-functional teams to deliver features.
• Troubleshoot and resolve production issues efficiently.
• Continuously improve development workflows and processes.

Requirements

• Recent experience with React.js + TypeScript and modern state/data patterns (Redux/React Query or similar).
• Strong proficiency in Node.js (Express/Nest or similar), REST APIs, and async programming.
• Expertise in MongoDB (aggregation, indexing, query optimization).
• Proven track record working with large datasets/high-volume data systems.
• Solid understanding of performance tuning and scalable architecture.
• Experience with code reviews, testing, and documentation.
• Ability to mentor and guide junior developers.
• Excellent problem-solving and troubleshooting skills.
• Strong communication and teamwork abilities.
• (Nice to Have) Experience with Cloud (AWS/Azure/GCP), Docker/CI-CD, Redis, queues/streaming, microservices/event-driven architecture.

Apply with us

If you have experience and team spirit and are looking for a great place to work, then start your job with us.

As part of our dedication to the diversity of our workforce, in-tech is committed to equal employment opportunity without regard for age, race, colour, national origin, ethnicity, gender, protected veteran status, disability, sexual orientation, gender identity, or religion.

We develop technologies that make the future possible: As an engineering and digitalization partner, we support our customers in developing intelligent, connected, and software-based systems. Through engineering excellence, innovative technologies, and global collaboration, we create sustainable value and accelerate innovation. At the same time, we foster an environment where people take pride in helping to shape the technologies of tomorrow.