Senior Backend Engineer (Identity & Access Management)

Andersen Lab • Poland

Remote

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AI Summary

Design and develop high-throughput, low-latency identity services including SSO, MFA, and federation using Go and gRPC. Own end-to-end feature delivery, implementing modern authentication protocols like OAuth 2.0 and OpenID Connect within a scalable distributed platform. Requires 7+ years of backend experience, 5+ years with Go, and deep expertise in IAM, web security, and cloud infrastructure.

Key Highlights

Build and evolve a high-performance, scalable distributed platform for a financial services client.

Act as subject matter expert on authentication and identity, owning security reviews and threat modeling.

Mentor engineers and contribute to the team's technical roadmap and security posture.

Key Responsibilities

Design, develop, and operate high-throughput, low-latency identity services including SSO, MFA, session management, and federation.

Own features end-to-end from design through production and support.

Implement and scale modern authentication and authorization protocols (OAuth 2.0, OpenID Connect, JWTs) including secure token issuance, rotation, and revocation.

Write clean, concurrent, and highly performant backend services primarily in Go.

Design idiomatic, testable code and clear API contracts using gRPC and HTTP.

Deploy, manage, and automate identity infrastructure using DevOps practices, CI/CD, monitoring, and incident response.

Serve as subject matter expert on authentication and identity, owning internal security reviews and threat modeling.

Integrate and maintain solutions with custom and standard identity providers such as Keycloak and AWS Cognito.

Mentor engineers, conduct design reviews, and contribute to the team's technical roadmap and security posture.

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Technical Skills Required

Go Identity and Access Management gRPC

Benefits & Perks

Fully remote, hybrid, or office work options

Up to 1,000 EUR monthly bonus based on expertise

Private health insurance and sports compensation

Certification compensation (AWS, PMP, etc.)

Access to corporate training portal

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Nice to Have

Experience with SAML, SCIM, PKI, JWKs/JWKS endpoints, key management (KMS/HSM), and token introspection.

Working knowledge of identity platforms, rate limiting, abuse mitigation, and adaptive authentication.

Job Description

Andersen is hiring a Senior Backend Engineer (Identity & Access Management) for a project building a scalable distributed platform and delivering reliable backend solutions.

Our customer is an international organization operating in the financial and protection services domain. The company provides a diverse portfolio of customer-oriented solutions across multiple business areas and markets. With a strong focus on digital capabilities, operational excellence, and long-term development, the organization continuously invests in technology, process improvement, and service innovation to support evolving customer and business needs.

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