# Senior Backend Software Engineer (m/f/d)

**Company:** [Codesphere](https://zerogtalent.com/frontier-companies/codesphere)
**Location:** Karlsruhe
**Work mode:** Hybrid
**Seniority:** Senior
**Employment type:** Full Time
**Category:** Engineering
**Department:** Product & Engineering
**Listed:** 2026-06-26

[View and apply on Zero G Talent](https://zerogtalent.com/frontier-jobs/codesphere/senior-virtual-cloud-platform-engineer-m-f-d-ed0a0ae4-5b76-4bfa-8957-a4825978da81)

## 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, ..
    

  

### 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_
    
-   EGYM Wellpass & on-site gym – _get access to thousands of sports and wellness facilities nationwide, plus our free in-house gym in Karlsruhe_
    
-   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_

## Other open roles at Codesphere

- [Working Student CEO Office (m/f/d)](https://zerogtalent.com/frontier-jobs/codesphere/working-student-ceo-office-m-f-d-5ec12349-27ed-420e-97e4-e792743e2d9e) — Karlsruhe
- [Technical Bid Manager (m/f/d)](https://zerogtalent.com/frontier-jobs/codesphere/technical-bid-manager-m-f-d-d3ae9e13-8c04-4cd8-ab9c-384cb752e2af) — Karlsruhe
- [Software Engineer Working Student (m/f/d)](https://zerogtalent.com/frontier-jobs/codesphere/software-engineer-working-student-m-f-d-982ada68-c85b-4b56-b344-52e656210260) — Karlsruhe
- [Senior Security and Compliance Engineer (m/f/d)](https://zerogtalent.com/frontier-jobs/codesphere/senior-security-and-compliance-engineer-m-f-d-5dcd771d-656d-438d-bae8-0b00fb805b36) — Munich
- [Senior Account Executive (m/f/d)](https://zerogtalent.com/frontier-jobs/codesphere/senior-account-executive-m-f-d-9e100207-3659-43b4-9cd1-3d44f303e57b) — Karlsruhe

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*Source: [Zero G Talent](https://zerogtalent.com), the job board for space, defense, AI, robotics and frontier-tech companies.*