Codesphere is hiring a Senior 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 virtual cloud provider platform, working on features that improve the overall platform experience – including Deployment-Technology, ManagedService, AuthN/AuthZ, Developer-Experience, .. 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 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 in building and/or operating cloud infrastructure components, ideally in a cloud-native environment e.g. message queues, SQL / NoSQL DBs • Familiarity with React • Experience building and/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