Ethical Hacker - Senior Consultant

Forvis Mazars; London; On-site; GBP 60,000 - 85,000; Full time

Job summary

Forvis Mazars seeks a Senior Consultant - Ethical Hacker in London to lead security engagements across various systems. This role involves mentoring junior staff, conducting penetration testing, and enhancing the company’s security methodologies. Ideal candidates will have extensive experience in ethical hacking and a strong technical background in various platforms.

Qualifications

• Experience in application, infrastructure, and cloud penetration testing.
• Understanding of Unix and Microsoft Windows security.
• Ability to develop applications in C#, ASP, .NET, among others.

Responsibilities

• Lead red and purple team assessments and deliver client reports.
• Develop remediation plans in collaboration with clients.
• Mentor junior consultants and contribute to their professional development.

Skills

red teaming

purple teaming

social engineering

penetration testing

network security

technical writing

Education

degree in a STEM related subject

Tools

Azure AD

Office 365

Job description

Social network you want to login/join with:

Ethical Hacker - Senior Consultant, London

col-narrow-left

Client:

Forvis Mazars

Location:

London, United Kingdom

Job Category:

Other

-

EU work permit required:

Yes

col-narrow-right

Job Reference:

1b35ae1816d7

Job Views:

12

Posted:

17.06.2025

Expiry Date:

01.08.2025

col-wide

Job Description:

Forvis Mazars cares about your career progression, offering individually designed career paths that help you pursue your interests, match your changing needs, and explore your true potential. We work with diverse, prestigious clients across a range of sectors and geographies, giving you the opportunity to constantly update and grow your skills for lifelong professional development.

Job Purpose

As a Senior Penetration Tester, you'll lead complex security engagements across infrastructure, cloud, mobile, AI systems, and more. You will design and execute red team operations, mentor junior consultants, and directly influence our technical testing capability and methodology as we progress towards CHECK and CREST STAR accreditations. This role is suited for experienced professionals ready to push the boundaries of ethical hacking and adversary simulation.

Role &Responsibilities

• Deliver and lead red team, purple team, and assumed breach, infrastructure, and applications assessments across multiple sectors.
• Emulate real-world attack scenarios using custom tooling and TTPs aligned with MITRE ATT&CK.
• Develop comprehensive and accurate reports and presentations for both technical and executive audiences.
• Interface with clients to address concerns, issues, or escalations; track and drive to closure any issues that impact the service and its value to clients.
• Working with clients to develop appropriate remediation plans.
• Providing thought leadership and direction for theCyber Securitypractice on malware, attack vectors and methods to protect against threats.
• Helping recruit, retain and develop theEthical Hackingteam by bringing superior leadership skills.
• Training and mentoring ofgraduate entry colleagues through the sharing of professional and technical skills and experience.
• Carry out research when not on client deliverable work that can be used to enhance our services to clients.
• Work with teams across the business, providing the latest technical knowledge to collaborate on interesting client projects.

Skills, Knowledge & Experience

The followingare expected from potential applicants:

• Experience with red teaming, purple teaming, and social engineering techniques.
• Application, Infrastructure and Cloud penetration testing experience above and beyond running automated tools.
• A good understanding of Unix,MicrosoftWindows, and network security skills.
• Excellent written and communication skills in English.
• Ability to work both independentlyand collaboratively in a team.
• Developing applicationsin one or more of the following:C#, ASP, .NET,Objective-C, Go, or Java (J2EE).
• CSTM / CRT / CSTL / CCT-INF / CCT-APP / OSEP / OSWE / CRTO / CRTO II
• On the pathway to: CCSAM / CCSAS / CCRTS / CSRTM
• Working knowledge of Azure AD, Office 365, and common cloud hosting platforms.
• A degree ina STEM related subject includingcomputer security, computer science, or equivalentexperience.

Advantageous:

• Mobile application, IoT and/or OT testing experience.
• Experience testing AI models or LLM-based applications for adversarial attacks.
• Research and Development experience.
• Threat Intelligence and Malware Development experience.
• Ability to work both independently and perform as ateam memberin agroupenvironment.
• Redteam operations and purple team delivery, including adversary emulation.

About Forvis Mazars

Forvis Mazars is a leading global professional services network. The network operates under a single brand worldwide, with just two members: Forvis Mazars LLP in the United States and Forvis Mazars Group SC, an internationally integrated partnership operating in over 100 countries and territories.

Both member firms share a commitment to providing an unmatched client experience, delivering audit & assurance, tax and advisory services around the world. Together, our strategic vision strives to move our clients, people, industry and communities forward.Through our reach and areas of expertise, we help organisations respond to emerging sustainability issues in the global marketplace including human rights, climate change, environmental impacts and culture.

We are one diverse, multicultural, multi-generational team with a huge sense of connection and belonging. This is a place where you can take ownership of your career, get involved, believe in yourself and put your ideas into action.

At Forvis Mazars, we empower our people and celebrate individuality. We thrive on teamwork and are agile. We have bold foresight and give people the freedom to make a personal contribution to our shared purpose. We support one another to deliver quality, create change and have a deeper understanding, to help make an impact so that everyone can reach their full potential.

Being inclusive is core to our culture at Forvis Mazars; we want to ensure everyone, whether in the recruitment process or beyond is fully supported to be their unique self. To read more about our approachclick here.

Our aim is to make the recruitment process as accessible and inclusive as possible - please contact us to discuss any changes you may require so we can work with you to support you throughout your application.