Senior Backend Software Engineer (m/f/d)

Codesphere
Karlsruhe, DEOn-site

About the Role

About CodesphereCodesphere 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 πŸš€What you'll driveYou 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 fitYour ProfileSeveral years of professional experience in software development, ideally in web or distributed systemsStrong proficiency in TypeScript and/or GoSolid 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 qualificationStrong foundations in Computer Science fundamentalsProfessional proficiency in English, written and spokenStrong communication skills and a collaborative mindsetOpenness to feedback and a genuine drive to keep learningStructured approach to problem-solving and a curiosity for technologyWhat sets you apartExperience in building and/or operating cloud infrastructure components, ideally in a cloud-native environment e.g. message queues, SQL / NoSQL DBsFamiliarity with ReactExperience building and/or operating monitoring and logging systemsDevSecOps mindset and hands-on experienceWhat's in it for you32 days of paid time off – 30 regular vacation days plus Christmas Eve and New Year's Eve offMeal allowance – up to 15 digital vouchers per month, adding up to over €100 net for youFlexibility – hybrid work setup with mobile work options and flexibility around core hoursSteep learning curve – fast-moving environment, real ownership, and a front-row seat to scaling a companyJob-Rad – lease a bike through us, tax-freeGym access – stay active on site (Karlsruhe office only)Employee events – from team offsites to regular get-togethersCompany pension scheme – company-supported pension to set you up for laterGreat public transport links – both offices are within walking distance of tram and metro stopsFind more English Speaking Jobs in Germany on Arbeitnow

Job Overview

100% EnglishNo German required
CodesphereHiring Company
Sep 22, 2026Date Posted