About the project

• We are seeking a skilled Penetration Tester to join our cybersecurity team supporting a key client in the banking industry. This role involves assessing and strengthening the security posture of a wide range of systems, including web applications, cloud environments, and infrastructure components. The position is based in Warsaw, with a hybrid work model requiring on-site presence three times per week.

Your responsibilities

• Perform penetration testing of web applications, infrastructure, and cloud platforms
• Identify and demonstrate impactful vulnerabilities using source code access and technical analysis
• Analyse server configurations, application logic, and security controls to discover weaknesses
• Collaborate with development and infrastructure teams to provide remediation strategies
• Develop or utilize proof-of-concept exploits to validate critical findings
• Share knowledge and best practices within the internal cybersecurity community

Our requirements

• Minimum 4 years of hands-on experience in penetration testing across web, infrastructure, and cloud environments
• Strong understanding of web security and vulnerability chaining
• Familiarity with tools such as Burp Suite, Wireshark, Ghidra, or netcat
• Proficiency in at least one programming language, e.g., Java, Python, JavaScript, C++
• Good knowledge of networking protocols and the TCP/IP stack
• Understanding of cryptography principles and their practical applications
• Fluency in English (spoken and written)

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