About the project

• We are looking for a Security Engineer to join our banking client’s team. In this role, you will collaborate closely with software and infrastructure engineers to protect large-scale distributed systems and critical infrastructure. This is a unique opportunity to apply penetration testing and security consulting expertise in a dynamic, high-impact environment within the financial services industry. You will be expected to work on-site in the Warsaw office at least three days a week.

Your responsibilities

• Conduct penetration tests and vulnerability assessments on distributed systems built in C++, Python, and Go
• Analyse and exploit vulnerabilities in containerized environments (Docker, Kubernetes, etc.)
• Build and maintain tools to automate security testing and vulnerability detection
• Support development teams by integrating security practices into the SDLC
• Provide expert guidance on secure architecture and implementation
• Liaise with the internal Tech Risk team to ensure security policy compliance

Our requirements

• Minimum of 3 years of professional experience in security engineering, including penetration testing and vulnerability assessments
• Proficiency in programming with C++, Python, or Go
• Solid understanding of Linux internals and networking fundamentals
• Familiarity with container technologies (Docker, Kubernetes) and their security implications
• Experience with security tools, frameworks, and automated testing techniques
• Fluent English communication skills, both written and spoken

Technologies we use

What we offer

• Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas

• Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market

• We share the profit with Workers - over PLN 60M has already been allocated for this aim since 2022

• Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more

• Comfortable workplace – class A offices or remote work

• Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application

• PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers

• Investment in your growth – meetups, webinars, training platform and technology blog – you choose

• Fantastic atmosphere created by all Sii Power People