Hybrid job
Hybrid(Senior) Self Sovereign Identity and Wallets Engineer (m/f/x)
Cofinity-X GmbH
Source: PersonioLocation: Köln · GermanyPublished: Oct 07, 2026Confirmed active: Oct 09, 2026
Full-timeTechnology
Key points from the posting
- Tech stack
- JavaC# .NETDockerKubernetesCI/CDSSIDIDsVerifiable credentialsDigital walletsGaia-XCatena-XW3C DID/VC
- Seniority:
- Senior
- Benefits
- Hybrid working model
- Flexible working hours
- Free choice of hardware
- Deutschland Ticket and Job Bike
Automatically extracted
Our assessment
- The posting states no salary. Comparable roles in our index (95 postings): median 5,750 euros per month, middle range 4,250 to 6,875 euros.
- 5 more open roles from this employer in our index.
Automated assessment by nomado24, not an employer statement.
Job description
Our vision - your future
Cofinity-X is a joint venture founded in 2023 by BASF, BMW Group, Henkel, Mercedes-Benz, SAP, Schaeffler, Siemens, T-Systems, Volkswagen, and ZF. Established by industry experts, our company is primed for growth and is intended to be further led by professionals like yourself.
Your mission
- 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
- Collaborate with architects and product teams to translate technical and regulatory requirements (e.g. self-sovereign identity, decentralized identifiers, verifiable credentials) into robust implementations
- 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.
Your profile
- 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
- Strong programming skills in (preferably) Java, or C# .NET
- Solid understanding of cryptography fundamentals, secure API design, and data protection principles
- Experience with cloud-native architectures, containerization (Docker/Kubernetes), and CI/CD pipelines
- 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
Why us?
- Hybrid working model
- Work-life balance with flexible working hours
- Annual training budget for continuous professional and personal development (1.500 EUR)
- Free choice of hardware
- Monthly lunch subsidy (up to 115 EUR)
- Deutschland Ticket and Job Bike for environmentally friendly mobility options
- Workation to work remotely from different locations within the EU
- We offer every employee a pensions 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
EngineeringFestangestellte (IT)permanent
This role is provided by an external source. Applications are handled on the source website.