Application Developer – IAM & API

Antal Sp. z o.o.; Kraków; Hybrid; PLN 120,000 - 180,000; Full time

Job summary

Antal Sp. z o.o. in Kraków seeks an Application Developer focusing on IAM and API. You will build and improve identity lifecycle, develop APIs and automate identity-related processes across enterprise systems.

You will join a hybrid Kraków team, collaborating with Security, DevOps and Engineering to deliver secure, scalable identity solutions and integrations with Google Cloud and enterprise apps.

Qualifications

• 3+ years of software development experience.
• Strong programming skills in Python, Go or Node.js.
• Proven experience with REST API development and backend services.
• Practical IAM/Identity Management experience.
• Experience with identity platforms such as Auth0, Okta, WorkOS, SlashID or similar.
• Solid understanding of OAuth 2.0, OIDC, JWT, SAML and identity federation.
• Experience with event-driven architectures and messaging platforms.
• Experience with Terraform or similar IaC tools.
• Understanding of API security, authentication and authorization.
• English proficiency at B2/C1 level.

Responsibilities

• Develop and maintain APIs and backend services supporting IAM.
• Build identity lifecycle workflows including provisioning/deprovisioning and access changes.
• Integrate identity platforms with enterprise applications and services.
• Work with authentication, authorization and identity federation.
• Implement and integrate solutions using 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 focus on API security.
• Automate IAM configuration using Terraform.
• Troubleshoot issues across APIs, identity services and distributed systems.
• Collaborate with Security, DevOps and Engineering teams on solutions.

Skills

Python

Go

Node.js

REST API development

IAM / Identity Management

English (B2/C1)

Tools

Auth0

Okta

WorkOS

SlashID

Terraform

Pub/Sub

Job description

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.

Nice to have

• Experience with Google Cloud, Cloud Run, Cloud Functions or GKE.
• Knowledge of OPA / policy-based authorization.
• Experience with Microsoft Entra ID, Okta or Ping Identity.
• Kubernetes / GKE experience.
• Secret Manager, HashiCorp Vault or similar.
• React / Full Stack experience.
• Experience in enterprise or regulated environments.
• Knowledge of ISO 27001, SOC 2, PCI DSS or HIPAA.

What we offer

• Opportunity to work on enterprise IAM and identity solutions.
• Strong focus on API development, identity automation and security.
• Modern cloud-native environment.
• Collaboration with experienced Security, Engineering and DevOps teams.