Penetration Tester

Join our Team

About this opportunity:

Join Ericsson’s Cloud RAN security team to help ensure resilient, secure networks by proactively identifying and mitigating vulnerabilities before deployment. You will contribute to safeguarding 5G and our upcoming 6G initiatives, supporting Ericsson’s commitment to trusted, secure infrastructure for customers worldwide.

What you will do:

• Conduct both white-box and black-box penetration testing activities for selected Ericsson RAN products or other Ericsson solutions.
• Practically apply pen-testing tools, programming, and scripting to identify, reproduce, and report security vulnerabilities.
• Analyse system design, source code, and network protocols; translate complex finding into clear, actionable guidance for engineers and stakeholders.
• Develop or customize testing tools and exploits as needed to validate security postures.
• Collaborate with product teams to implement fixes, validate improvements, and contribute to secure-by-design practices.
• Document findings, present risk assessments, and support customer-focused security deliverables, including research publications or disclosures when applicable.
  
  

The skills you bring:

• Proven penetration-testing experience (white-box and black-box) with documented results (reports, CVE’s, white papers, security talks).
• Solid understanding of telecom and cloud architectures.
• Hands-on expertise with pen-testing tools, programming languages, and scripting.
• Familiarity with Linux, network and telco protocols, secure coding principles, and the ability to analyse and communicate complex findings clearly.
• Strong problem-solving mindset, curiosity, and the ability to work independently as in a team.
• Demonstrated ability to work within fast-evolving environments and to adapt to new technologies and threats.
• OSCP, OSWE, CPTS certifications (or equivalent) are a plus that we will consider.
  
  

Why join Ericsson?

At Ericsson, you´ll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what´s possible. To build solutions never seen before to some of the world’s toughest problems. You´ll be challenged, but you won’t be alone. You´ll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.

What happens once you apply?

Click Here to find all you need to know about what our typical hiring process looks like.

Encouraging a diverse and inclusive organization is core to our values at Ericsson, that's why we champion it in everything we do. We truly believe that by collaborating with people with different experiences we drive innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity Employer. learn more.

Primary country and city: Sweden (SE) || Stockholm

Req ID: 775367