Senior Software Engineer w Warszawa, Polska

What will be your tasks?

• Designing and evolving the architecture of our IAM services.
• Developing backend components responsible for authentication, authorisation, identity management and access control. Designing APIs and integrations between IAM services and other parts of the CloudFerro platform.
• Designing solutions for multi-tenant environments and systems operating at scale.
• Working closely with the Product Manager to translate business needs into effective technical solutions.
• Building prototypes and proofs of concept for new ideas and technologies.
• Extending existing codebases and implementing new services and components.
• Making architectural decisions with security, scalability, reliability and maintainability in mind.
• Maintaining high engineering standards through code reviews, automated testing, refactoring and solid software development practices.
• Diagnosing complex issues at the intersection of applications, IAM and cloud infrastructure.
• Collaborating with other technical teams across the organisation.
• Creating and evolving technical documentation and architectural standards.

We are looking for developers who:

• At least 6 years of professional software engineering experience, including hands-on experience designing system architecture.
• Strong proficiency in Python and experience building production-grade backend services.
• Experience designing distributed systems and microservice architectures.
• Practical knowledge of identity and authentication standards and protocols such as OAuth 2.0, OpenID Connect, SAML 2.0 and JWT.
• Experience designing and integrating REST APIs.
• Good knowledge of Linux, Kubernetes and cloud environments.
• Experience working with relational databases, particularly PostgreSQL.
• The ability to analyse requirements and translate them into well-designed technical solutions.
• The ability to make informed architectural decisions and clearly explain the trade-offs behind them.
• A strong sense of ownership — from initial idea and technical design through implementation and production operation.
• English proficiency that allows you to work comfortably with technical documentation and collaborate in an international environment.

Nice to have

• Experience with other programming languages such as Java or Go.
• Familiarity with AWS, Azure or GCP.
• Knowledge of RBAC, ABAC, policy engines and fine-grained authorisation models.
• Experience with MFA, SSO, service accounts, token management and secrets management.
• Familiarity with RabbitMQ, Redis and Prometheus/Grafana.
• Experience designing IAM solutions for multi-cloud environments or large SaaS, PaaS or IaaS platforms.
• Practical knowledge of application security and cloud security.
• Experience with OpenStack, particularly Keystone.

What do we offer?

• Real influence over the technology architecture and engineering direction across the organisation.
• Complex engineering challenges connected with the European space sector.
• A high degree of autonomy and the opportunity to work alongside experienced engineers and domain experts.
• An informal and friendly working environment in our office by the Vistula River in Warsaw.
• Competitive compensation, stable employment and a comprehensive benefits package, including private healthcare, MultiSport, insurance and language classes.