Senior Backend Engineer

Enjoy solving complex backend challenges, working with distributed systems, and having a real say in technical decisions?

Join our Email Security team as a Senior Backend Engineer and help build, improve, and evolve the backend services powering our cybersecurity products.

You'll work in a technically demanding environment where performance, scalability, reliability, and security matter. From improving existing systems to designing new services, you'll have the opportunity to take ownership of meaningful engineering challenges and influence how our products evolve.

Full-time hybrid in Hanover.

Your Job

• Take technical ownership of existing and new applications or services within our cybersecurity product ecosystem.
• Design, develop, and maintain high-quality, scalable, and maintainable software solutions.
• Lead and contribute to architectural decisions and help shape long-term technical direction.
• Collaborate cross-functionally with other developers, product management, system engineers, UX/UI, and QA teams to deliver end-to-end solutions.
• Mentor and support Junior Developers , fostering best practices and continuous improvement.
• Work across multiple products , contributing to new features, improvements, and long-term maintenance.

Your Profile

• 5+ years of professional experience as a Software Developer, with a strong focus on backend development.
• Strong Python experience, experience with Java or Go is a plus.
• Experience designing, operating, and optimizing relational or non-relational databases. Experience with Elasticsearch, SQL databases, or Redis is especially relevant.
• Comfortable working in UNIX-based environments, especially Linux .
• Strong experience building and maintaining scalable, high-quality software within complex, distributed systems.
• Strong analytical skills, structured thinking, and a high sense of ownership.
• Fluent in spoken and written English.

Nice-to-haves

Experience in any of the following areas would be useful, but you don't need to tick every box.

• Experience with designing and maintaining systems hosted on-premises.
• Basic DevOps skills and experience with Ansible.
• Experience in cybersecurity or email software.
• Familiarity with AI-assisted or agent-based development workflows.
• Basic Angular knowledge.

Your Benefits

• Room for innovation and autonomy in a fast-growing international company.
• Temporary Employee Exchange Program – we provide the ability for you to work at our global office locations and explore the world (e.g. Berlin, Madrid, Malta, Montréal, Washington D.C.).
• Flexible working hours and the option to work from home.
• Permanent contracts – we’re in it for the long haul and hope you are too!
• Team events like Laser Tag, Office Movie Nights, Foodie Fridays and much more – let yourself be surprised!
• FitKit subscription and private insurance for your health!
• Referral Bonus: we pay 1500€ for each referral who is successfully hired by us!

Plus

• A focus on work-life balance and sustainable performance.
• A daily stand-up at around 14:00.
• No Friday deployments.
• No on-call shifts.
• Support for long-term learning and development.