Senior Backend Software Engineer (m/f/d) at Codesphere (Karlsruhe, Germany)
Codesphere· Karlsruhe, Germany·
Role details
Employee Equity Participation · 30+ Vacation Days · Meal Allowance · Hybrid Work Setup · Job-Rad Bike Lease · Gym Access · Employee Events · Company Pension Scheme
Summary
Join Codesphere as a Senior Virtual Cloud Platform Engineer to own complex features end-to-end, mentor junior staff, and shape the platform's capabilities. The role involves technical design, implementation, and maintenance within a fast-growing sovereign cloud infrastructure team.
Job description
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, ..
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
Why work at Codesphere
- Culture & Mission: Purpose-driven work focused on solving infrastructure dependency and digital sovereignty — a high-impact, meaningful challenge in European tech.
- Growth Trajectory: Rapidly scaling company (23% YoY headcount growth, 900% increase in job postings) offering career acceleration and ownership.
- Engineering Excellence: Strong engineering pedigree rooted in Baden-Württemberg, Germany's high-tech hub. Technical team makes up 31% of headcount. Focus on patented, novel technology (not just "cloud wrapping").
- International & Diverse: Team of 60+ people from 10+ nationalities across 9 countries. Offices in Karlsruhe (HQ), Munich, and New York.
- Hybrid/Remote: Multiple office locations with flexibility; strong German engineering culture with global reach.
- Notable Perks: Work on a patented deployment technology that genuinely differentiates in the market; opportunity to shape a product used by 50k+ users and large enterprises.