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 you’re passionate about joining a growing and dynamic team with a company with a positive culture and team spirit, we’d 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.