Software Engineer (C, Authentication & Identity) – Remote

Stack

Responsibilities

• ▹Develop, maintain and enhance TrustBroker functionality across authentication and identity management components
• ▹Implement fixes and enhancements for Kerberos, OpenID Connect (OIDC), RADIUS and multi-factor authentication integrations
• ▹Contribute to the expansion of OIDC-based authentication capabilities
• ▹Design, implement and maintain automated unit and integration tests for all delivered functionality
• ▹Validate integrations against real identity providers and MFA vendors, including Microsoft Entra ID, Okta, Ping Identity and Duo
• ▹Troubleshoot complex authentication, connectivity and protocol issues across customer environments
• ▹Maintain and improve customer-facing documentation, configuration references and troubleshooting guides
• ▹Collaborate with Product, Support and Engineering teams
• ▹Participate in design discussions and architectural decisions for security-critical functionality
• ▹Use modern development tools, including AI-assisted workflows, to improve productivity and code quality

Requirements

• ▹3–5+ years of professional software development experience in C
• ▹Strong understanding of memory management, multithreading, error handling and cross-platform development
• ▹Hands-on experience with at least one authentication or identity protocol: Kerberos, OIDC, OAuth 2.0, SAML or RADIUS
• ▹Solid understanding of TLS, PKI, X.509 certificates and modern authentication concepts
• ▹Experience developing software for Windows and Linux
• ▹Strong troubleshooting and debugging skills, including protocol analysis and log-based root-cause investigation
• ▹Experience writing automated tests as part of development
• ▹Ability to work independently in a remote, international team
• ▹Strong written and verbal communication skills in English
• ▹Openness to modern practices, including AI-assisted coding and iterative delivery

Nice to have

• ▹Experience with Kerberos and Active Directory
• ▹Experience implementing or supporting OIDC solutions
• ▹Experience integrating with MFA providers such as Microsoft Entra ID, Okta, Ping Identity, Duo, RSA or RADIUS-based solutions
• ▹Familiarity with SAP technologies: NetWeaver, SNC, SAP Crypto, RFC SDK or SAP BTP
• ▹Experience with OpenSSL and security-focused development
• ▹Knowledge of DNS, certificate management and enterprise authentication architectures
• ▹Experience creating technical documentation
• ▹Customer-facing experience, with willingness to grow toward pre-sales

Soft skills

What we offer

• ▹Work on a security-critical authentication product used by enterprises worldwide
• ▹Exposure to modern identity, authentication and SAP security technologies
• ▹Collaborative, international engineering team focused on quality and innovation
• ▹Flexible working hours and results-oriented culture
• ▹Professional development and continuous learning
• ▹Competitive salary and benefits
• ▹Flat hierarchies; ideas count from day one

About the company

SecurityBridge is a fast-growing global software company building solutions that secure enterprise SAP environments. The position is remote worldwide; visa sponsorship and relocation support are not available, and valid work authorization in the country of residence is required.