Senior Backend Software Engineer (m/f/d)
Confirmed on the employer's own hiring board on Nov 7, 2026. First seen by Alion on Jun 26, 2026. Code Sphere scores D on the Alion truth index.
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