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
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(Senior) Self Sovereign Identity and Wallets Engineer (m/f/x) in Köln Arbeitgeber: Personio
Personio ist ein hervorragender Arbeitgeber, der eine integrative Kultur fördert, in der Vielfalt geschätzt wird und jeder Mitarbeiter die Möglichkeit hat, sich weiterzuentwickeln. Mit einem flexiblen Arbeitsmodell, das 3 Tage Büropräsenz in München, Dublin oder Berlin erfordert, sowie zusätzlichen Vorteilen wie 28 Tagen bezahltem Urlaub und einem jährlichen Impact Day, bietet Personio nicht nur ein wettbewerbsfähiges Vergütungspaket, sondern auch ein unterstützendes und dynamisches Arbeitsumfeld, das Teamarbeit und persönliche Entwicklung in den Vordergrund stellt.
