Backend Software Engineer (m/f/d)

About Codesphere

Codesphere is a Virtual Cloud Provider from Germany building the future of sovereign cloud infrastructure. Our platform gives enterprises and governments full sovereignty without giving up modern cloud capability - a vision recently validated by a series of multi-million European government tenders.

Since our founding in Karlsruhe in 2020, we've expanded into an international team of 60+ experts. Based in Karlsruhe and Munich and backed by top-tier investors, we are chasing a bold vision.

We're scaling fast and would love for you to join us and grow alongside us

What you'll drive

• You own complex features end to end - from product discovery and planning through technical design, implementation, testing, and maintenance.
• You conduct code and technical design reviews, raising the bar for quality across the team.
• You mentor junior engineers and actively contribute to a culture of learning and growth.
• You shape the capabilities of our collaborative developer cloud, working on features that improve the overall platform experience - including Public API, Usage History, IAM & Permission Management, Secrets Management, external CI integrations, Web IDE, deployment technology, monitoring, managed services, and the core internals of customer application deployment.

What makes you a great fit

Your Profile

• Several years of professional experience in software development, ideally in web or distributed systems
• Strong proficiency in JavaScript/TypeScript and/or Go
• Solid understanding of SQL databases, distributed systems, and the design of APIs and microservices architectures, containerization e.g. Docker, Kubernetes
• Degree in a relevant field or comparable qualification
• Strong foundations in Computer Science fundamentals
• Professional proficiency in English, written and spoken
• Strong communication skills and a collaborative mindset
• Openness to feedback and a genuine drive to keep learning
• Structured approach to problem-solving and a curiosity for technology

What sets you apart

• Experience with cloud infrastructure, ideally in a cloud-native environment
• Familiarity with React
• Experience building or operating monitoring and logging systems
• DevSecOps mindset and hands-on experience

What's in it for you

• 32 days of paid time off - 30 regular vacation days plus Christmas Eve and New Year's Eve off
• Meal allowance - up to 15 digital vouchers per month, adding up to over €100 net for you
• Flexibility - hybrid work setup with mobile work options and flexibility around core hours
• Steep learning curve - fast-moving environment, real ownership, and a front-row seat to scaling a company
• Job-Rad - lease a bike through us, tax-free
• Gym access - stay active on site (Karlsruhe office only)
• Employee events - from team offsites to regular get-togethers
• Company pension scheme - company-supported pension to set you up for later
• Great public transport links - both offices are within walking distance of tram and metro stops