Application Developer – IAM & API

We are looking for an Application Developer with strong experience in Identity & Access Management (IAM), API development and identity integrations.

You will join a team responsible for building and improving identity lifecycle and access management solutions, developing APIs and automating identity-related processes across enterprise systems.

Location: Kraków – hybrid, 6 days per month from the Kraków office
Contract: B2B via Antal (outsourcing)

Your responsibilities

Develop and maintain APIs and backend services supporting identity and access management.
Build identity lifecycle workflows covering provisioning, deprovisioning and access changes.
Integrate identity platforms with enterprise applications and services.
Work with authentication, authorization and identity federation.
Implement and integrate solutions based on OAuth 2.0, OIDC, JWT and SAML.
Develop event-driven integrations using Pub/Sub and asynchronous processing.
Build secure, scalable and reliable services, with a strong focus on API security.
Automate infrastructure and IAM configuration using Terraform.
Troubleshoot issues across APIs, identity services and distributed systems.
Work closely with Security, DevOps and Engineering teams on technical solutions and integrations.

What we are looking for

3+ years of experience in software development.
Strong programming skills in Python, Go or Node.js.
Solid hands-on experience with REST API development and backend services.
Practical experience in IAM / Identity Management / Identity Orchestration.
Experience with identity platforms such as Auth0, Okta, WorkOS, SlashID or similar.
Good understanding of OAuth 2.0, OIDC, JWT, SAML and identity federation.
Experience with event-driven architectures and messaging platforms.
Experience with Terraform or another Infrastructure as Code tool.
Understanding of API security, authentication and authorization.
Good troubleshooting and problem-solving skills.
English – B2/C1.