Job
- Level
- Senior
- Location
- Cologne
- Working Model
- Hybrid, Onsite
- Job Field
- Back End
- Employment Type
- Full Time
- Contract Type
- Permanent employment
Job Summary
In this role, you will design and develop backend services focused on digital identity and wallet functionalities, implementing secure, scalable solutions according to modern standards and regulations.
Job Technologies
Your role in the team
- Design, develop, and maintain core backend services, with a focus on digital identity and wallet-related components.
- Implement and operate secure, standards-compliant wallet functionality (e.g., credential issuance, verification, and storage) within our platform.
- Ensure the reliability, scalability, and security of core services that other product components depend on.
- Zusammenarbeit mit Architekten und Produktteams, um technische und regulatorische Anforderungen (z. B. self-sovereign identity, decentralized identifiers, verifiable credentials) in robuste Implementierungen zu übersetzen.
- Contribute to API design and integration patterns for wallet and identity-related services.
- Participate in code reviews, technical design discussions, and continuous improvement of engineering practices.
- Monitor, troubleshoot, and resolve issues in core services, ensuring high availability and data integrity.
- Stay current with relevant standards and specifications (e.g. Gaia-X, Catena-X, W3C DID/VC) and help shape their implementation through participation in working groups, expert groups and committees as required.
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Our expectations of you
Qualifications
- Strong programming skills in (preferably) Java, or C# .NET.
- Solid understanding of cryptography fundamentals, secure API design, and data protection principles.
- Familiarity with relevant standards bodies and specifications (e.g., Gaia-X, Catena-X) is beneficial.
- Analytical and structured working style with strong problem-solving skills and a collaborative, team-oriented mindset.
Experience
- Several years of experience as a backend or software engineer in an agile development environment.
- Hands-on experience with identity and credential technologies such as SSI, DIDs, verifiable credentials, or digital wallets is a strong plus.
- Experience with cloud-native architectures, containerization (Docker/Kubernetes), and CI/CD pipelines.
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What we offer
- Hybrid working model.
- Work-life balance with flexible working hours.
- Annual training budget for continuous professional and personal development (€1,500).
- Freie Wahl der Hardware.
- Monthly lunch subsidy (up to 115 EUR).
- Germany Ticket and Job Bike for environmentally friendly mobility options.
- Workation to work remotely from different locations within the EU.
- We offer every employee a pension scheme (bAV) with company sponsorship.
- Regular team events to strengthen cohesion and foster a positive working atmosphere.
- A modern office with an impressive view of the Cologne Cathedral.
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Benefits
Work-Life-Integration
Health, Fitness & Fun
Topics You Will Work On
Job Locations
About Your Employer
Cofinity X GmbH
Cofinity-X GmbH, a joint venture based in Cologne, was established by leading companies in the automotive industry. The company focuses on data exchange and the development of digital platforms for small and medium-sized enterprises in the automotive sector. Cofinity-X provides innovative solutions within the Catena-X data ecosystem.
Description
- Company Type
- Startup
- Working Model
- Hybrid, Onsite
- Industry
- Vehicle Manufacturing, Supplier
Senior Software Engineer
- Location
- Cologne
- Working Model
- Hybrid, Onsite
- Diversity
- Open for all genders
- English Only
- English only required
