(Senior) Self Sovereign Identity and Wallets Engineer (m/f/x)

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