Cyber Advisory BRS – CTEM – Senior Consultant to Manager
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Job Description
We are looking for technically gifted and strategically minded Penetration Testers to deliver and lead offensive security engagements across diverse environments.
You'll simulate sophisticated attack scenarios, uncover vulnerabilities, and provide strategic recommendations that help our clients reduce risk and enhance their overall security posture.
As a Senior Consultant or Manager, you'll assess infrastructures, applications, and cloud environments through ethical hacking engagements and work closely with clients to strengthen their resilience against evolving cyber threats.
Key Responsibilities
Plan, execute, and report on penetration testing engagements across network infrastructure, web and mobile applications, cloud environments, and APIs.
Deliver advanced threat emulation, social engineering, and red/purple team assessments, including Threat-Led Penetration Testing (TLPT) and TIBER exercises.
Analyse and communicate technical findings clearly, providing actionable recommendations tailored for both technical and executive stakeholders.
Provide strategic remediation advice to help clients address vulnerabilities and build long-term resilience.
Collaborate with internal threat intelligence, incident response, and governance teams to provide holistic cyber defence solutions.
Develop and enhance custom tools, scripts, and proof-of-concepts to improve testing effectiveness.
Contribute to knowledge sharing, methodology development, and team mentoring, depending on seniority.
Support business development initiatives through proposal input, presentations, or technical scoping discussions (Senior Consultant level).
Skills & Experience
Bachelor's degree in Computer Science, Cybersecurity, or a related discipline (or equivalent practical experience).
3+ (5+ for Manager) years of hands‑on penetration testing or offensive security experience.
Proficiency with tools such as Burp Suite, Nmap, Metasploit, Cobalt Strike, Nessus, and similar toolsets.
Deep understanding of common attack vectors, including OWASP Top 10, MITRE ATT&CK, and cloud‑specific threat models.
Strong scripting capability in Python, Power Shell, or similar languages.
Relevant certifications such as OSCP, OSCE, CREST CRT/CCT, GPEN, or equivalent industry‑recognised credentials.
Desired Skills
Experience testing cloud platforms (AWS, Azure, GCP) and container environments (Docker, Kubernetes).
Proven ability to lead client workshops, present findings, and manage sensitive or complex client discussions.
Familiarity with compliance frameworks and regulations such as PCI‑DSS, ISO 27001, NIST, DORA, and NIS2.
Excellent report writing and communication skills, with the ability to translate technical findings into actionable insights for business leaders.
About Us
Grant Thornton Ireland is rapidly approaching 3,000 people, in 9 offices across Ireland, Isle of Man, Gibraltar and Bermuda.
With a presence in over 149 countries around the world and a global network of 73,000 people, we bring our clients the local knowledge, national expertise and global presence to help them succeed – wherever they're located.
At GT, we work as trusted advisors, bringing local knowledge and national expertise, with a global presence, to help businesses succeed – wherever they are located.
We make business more personal by investing in building relationships and empowering our clients to make the right decisions for their organisation now and for the future.
About The Team
At Grant Thornton, we provide equitable opportunities for all our colleagues.
We are a responsible, sustainable business where equity, diversity and inclusion (ED&I) is at the forefront of our workplace culture agenda, and today, we continue to build and develop on our existing ED&I structure and strategy to meet our workplace culture needs.
Our Benefits
Please follow this link for information on our generous benefits package.
Reward And Benefits
Our reward and benefits are designed to create an environment where our people can flourish.
We are committed to building a culture where our people have access to the necessary benefits to help promote a healthy lifestyle and thrive.
Recognition
We want to create a culture of recognition and celebrating success, by saying thank you to people who surpass our expectations and recognising the right values and behaviours.
Our Shout Out recognition scheme is our way of highlighting and promoting achievements.
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