Senior Software Engineer – Java (f/m/d)

At IDnow, we believe innovation is finding solutions to problems that don't yet exist but are sure to impact our future. Making the connected world a safer place is and has been our vision from the very beginning.

Our identity verification SaaS solutions enable businesses to make reliable, informed decisions in an instant. We offer robust, secure and seamless solutions to protect against player fraud, identity theft or forging signatures. It is not only mandatory and reduces business loss, but it also becomes a highly competitive advantage, as customer experience and retention rates improve substantially. We help our clients to increase security, improve customer conversion, and streamline their onboarding process.

We understand that regulation and our clients’ requirements are constantly evolving, so we evolve with them. Thanks to our close relationships with industry regulators, our solutions comply with multi-jurisdictional KYC ("Know Your Customer") regulations, allowing customers to process a wide variety of identity documents, and onboard and service consumers from all around the world in different markets and countries.

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.
• Strong analytical and problem-solving skills with a collaborative, proactive mindset.

Bonus skills:

• Familiarity with Kubernetes, AWS, or microservices architectures.
• Experience in security-conscious or compliance-heavy environments (e.g., FinTech, Identity, KYC).
• Knowledge of message brokers (Kafka, RabbitMQ) or event-driven systems.

Perks & Benefits

• Health & Wellbeing: Use your full access to the mental health platform nilo, including 1on1 sessions.
• We value personal and professional development: make full use of Udemy, our training platform with 24/7 access and unlimited content/course consumption incl. certification.
• We make your remote work comfy: we provide support on equipment and offer flexible working hours.
• We value collaboration & love to come together: regular onsite gatherings, internal initiatives and summer parties to connect outside of work.
• May your family require your attention or other reasons apply: use the benefit of our paid special leave days.
• Enjoy the possibility to combine work with a longer stay at your holiday destination or extend a weekend with our Workcation possibilities.
• In addition to the perks & benefits above, we offer specific benefits that differ between our locations.

IDnow applies the principles of non-discrimination and equality: We strive to establish, maintain, and promote an open and inclusive recruitment process and working environment by respecting the principles of equal opportunities. Including but not limited to: sex, race or ethnic origin, religion or convictions, gender identity, citizenship, marital status, disability, age, or sexual orientation.

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