Senior Java Backend Engineer

We are hiring Senior Java Backend Engineer for Sweden.

Job Summary:

We are seeking a Senior Java Backend Engineer to develop IAM capabilities for a platform providing secure product access for millions of users. The role centres on identity services that must be reliable and scalable, with security treated as a core principle throughout. It combines hands-on backend engineering with operational responsibility for the services in production.

Educational Qualification: Bachelor’s or Master’s degree in Computer Science, Engineering, or a related discipline.

Key Responsibilities:

• Build, customize and operate identity services.
• Implement and maintain authentication and authorization flows.
• Drive security best practices.
• Handle observability and incident response for the services in production.

Technical Skills & Expertise:

• Strong experience in Java backend development, including developing microservices and running them in production, and demonstrated experience in the design and production operation of distributed systems.
• Demonstrated hands-on experience deploying Keycloak in real-world environments, including customizations using SPIs and providers.
• In-depth understanding of JWT, SAML, OAuth 2.0 and OpenID Connect, alongside a security-first approach and experience supporting audits and compliance requirements.
• Experience with Kubernetes, Docker, CI/CD pipelines and at least one major cloud platform, either AWS or Azure.
• Solid database skills, for example in PostgreSQL.
• Familiarity with caching used in Keycloak deployments, such as Infinispan or Redis.
• Experience with CIAM at scale, covering customer identity, identity resolution or account deduplication (Advantage).
• Experience with WebAuthn/FIDO2/passkeys, Zero Trust architectures or PKI (Advantage).
• Experience with event-driven architectures, such as Kafka, and observability tools such as Prometheus, Grafana and OpenTelemetry (Advantage).

Soft Skills:

• Ownership of services from design through deployment.
• Collaboration with product, security and platform teams.