Senior Software Engineer - Java - Idnow

IDnow is a leader in digital identity and fraud prevention in Europe with a mission to transform trust into the most powerful asset in the digital world, empowering enterprises with AI-driven, SaaS-based identity solutions that deliver scalable security, adaptive compliance, and real-time fraud prevention . Through its broad portfolio of digital identity and fraud prevention solutions, IDnow establishes, maintains and enriches trust throughout the customer journey, ensuring businesses can confidently and securely operate while leveraging digital identity to drive growth, security and scalability.

The company has offices in Germany, United Kingdom, Romania and France , and is backed by renowned institutional investors, including Corsair Capital and Seventure Partners. Its portfolio of international clients spans a wide range of end markets including financial services, telecommunications, travel & mobility, gaming, and other industries.

This position is based in Germany, preferably Munich / Berlin (Hybrid office also available).

As a Senior Software Engineer – Java , you will play a key role in designing, building, and maintaining scalable, secure, and high-performance backend systems for our identity verification platform. Working in a cross-functional team, you will contribute to architecture decisions, mentor team members, and help shape the technical direction of our products that serve millions of users globally.

Key Responsibilities

• Design, develop, and maintain robust Java applications and microservices powering IDnow’s identity verification platform.
• Contribute to architectural decisions and system design for scalable, secure, and maintainable solutions.
• Write clean, efficient, and well-documented code following best practices and engineering standards.
• Collaborate closely with product managers, UX designers, DevOps, and QA engineers in a cross-functional setup.
• Identify performance bottlenecks, debug complex issues, and optimize applications for high-volume transactions.
• Stay updated with the latest technologies and contribute to technical innovation and continuous improvement.
• Guide and mentor junior developers, conduct code reviews, and share knowledge within the team.

Preferred Experience

• 5+ years of professional software development experience with a strong focus on Java.
• Expertise in Java EE and Spring / Spring Boot (or Play Framework).
• Solid understanding of JVM performance tuning and optimization.
• Proficiency with relational databases (MySQL, PostgreSQL).
• Strong experience in RESTful API design and development.
• Experience with unit testing frameworks (JUnit, Mockito) and test-driven development (TDD).
• Familiarity with CI/CD pipelines, Git, Maven, and Docker.
• Experience working in Agile/Scrum environments.