Senior Backend Engineer (f/m/x) - Single Sign-On (SSO) Services Engineering

Overview

Senior Backend Engineer (f/m/x) – Single Sign-On Services Engineering to join our team in Frankfurt or Berlin. This role combines strong backend engineering expertise with advanced production support and domain ownership. You will work on highly scalable, security‑critical backend services supporting enterprise authentication and federated identity platforms. In addition to hands‑on development and deep debugging, you will act as a senior technical escalation point and a Subject Matter Expert (SME) for critical components of the SSO ecosystem. This is a hands‑on role requiring strong backend development skills, excellent troubleshooting capability, and a proactive mindset to improve system reliability, resilience, and operational excellence.

Position overview – German version (for locale reference): Senior Backend Engineer (d/m/w) for the Single Sign On Services Engineering Team in Frankfurt or Berlin; combines backend engineering with production support and domain ownership; works on scalable, security‑critical backend services for enterprise authentication and federation platforms; acts as escalation point and SME for SSO components; hands‑on role focused on reliability, resilience, and operational excellence.

Your Key Responsibilities

• Design, develop, and maintain robust backend services supporting large‑scale SSO and identity platforms
• Lead investigation and resolution of complex production incidents, ensuring rapid recovery and minimal business impact
• Act as a technical escalation point (SL3) for SL1 and SL2 support teams
• Perform deep dive debugging of Java services, SAML/OAuth2/OpenID Connect flows, and federation issues
• Resolve complex issues across Java‑based services, APIs, and distributed systems
• Work extensively with authentication and federation flows (OAuth2, OpenID Connect, SAML)
• Collaborate with Engineering, DevOps, and Product teams to improve system reliability, observability, and performance
• Analyse logs, metrics, and traces using monitoring and logging platforms (e.g. Splunk, Grafana, Prometheus, ELK)
• Support release activities and validate production readiness of new features and deployments
• Maintain and enhance runbooks, knowledge articles, and operational documentation

Your Skills And Experiences

• Strong hands‑on experience in backend development using Java (Python or similar languages is an advantage)
• Proven experience troubleshooting and supporting distributed, high‑availability systems in production
• Solid understanding of cloud platforms (AWS, Azure, or GCP)
• Hands‑on experience with Kubernetes, Docker, and containerised workloads
• Functional understanding of Identity & Access Management (IAM) tools like PingAM, PingIDM, PingDS and Keycloak
• Strong Linux knowledge with experience in shell scripting (Bash) and infrastructure‑level debugging
• Experience with monitoring, logging, and observability tools (Splunk, Prometheus, Grafana, Datadog, ELK, etc.)
• Excellent problem‑solving skills and ability to work effectively under pressure
• Strong communication skills with the ability to collaborate across global teams
• Fluent in English

What We Offer

• We provide a comprehensive portfolio of benefits and offerings to support both private and professional needs.
• Emotional and mental well‑being: consultation in difficult life situations and mental health awareness trainings.
• Physically healthy: health check‑ups, vaccination drives, and guidance on healthy living and nutrition.
• Socially connected: networking opportunities, PME family service, FitnessCenter Job, flexible working models, and a culture of diversity and inclusion.
• Financial security: pension plans, banking services, company bicycle, and Deutschlandticket.

Note: Benefits may vary by location. Please contact your recruiter with location‑specific questions.

This job is available in full and part‑time. For recruitment questions, please contact Luisa Moderzinski at .

We are committed to an inclusive culture where every day we strive to do our best through responsible action, economic thinking, initiative, and targeted collaboration. We celebrate and share the successes of our employees. We welcome applications from all people and foster a fair and inclusive work environment.