Senior Security Software Engineer - Azure, .NET & IAM

STATE STREET CORPORATION; Kraków; On-site; PLN 164,000 - 200,000; Full time

Benefits offered by this job

Permanent contract from day one

Birthday holidays

Gold medical package for employees and

Private pension & life insurance

Training & development programs

Volunteer days

Well-being programs

Job summary

State Street Corporation in Kraków is seeking a Senior Software Engineer to join Platform Security Solutions within Technology Platform Engineering & Operations. You will help maintain and expand security-focused products, build new services, and scale enterprise systems used by thousands of IT users.

The role emphasizes cross-disciplinary collaboration with security engineers, architects, and data teams, with opportunities to apply AI-assisted development and modern cloud-based tooling.

Qualifications

• Modern C# and .NET (8/9/10) development.
• Experience with Blazor applications or ASP.NET Core.
• Working with Relational Databases (ideally MSSQL).
• Good understanding of cybersecurity concepts including IAM and least privilege, secret management.
• Good understanding of Performance/Scale concepts including asynchronous code, batch processing, locking and concurrency.
• Experience designing, building, maintaining and complex distributed systems.
• Preference for and skill writing robust and correct code.
• Good understanding and proficiency working with SDLC tooling such as GIT, CI/CD pipelines, Jira.
• Experience with Windows Server, Active Directory.
• Strong experience on working with APIs.

Responsibilities

• Maintain and expand existing security-focused products and to develop new services.
• Develop and operate enterprise-scale distributed systems and data warehouses used by thousands of IT users.
• Collaborate with Security Software Engineers and Architects to shape future platform capabilities.
• Apply AI-assisted development techniques such as spec-driven development.
• Partner with cross-functional teams to deliver secure, scalable software at enterprise scale.

Skills

C#/.NET

Blazor/ASP.NET Core

SQL Server (MSSQL)

IAM/least privilege

Performance & scalability

Distributed systems

APIs

Git CI/CD Jira

Windows Server

Active Directory

Job description

State Street Corporation in Kraków is seeking a Senior Software Engineer to join Platform Security Solutions within Technology Platform Engineering & Operations. You will help maintain and expand security-focused products, build new services, and scale enterprise systems used by thousands of IT users.

The role emphasizes cross-disciplinary collaboration with security engineers, architects, and data teams, with opportunities to apply AI-assisted development and modern cloud-based tooling.