(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

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