Head of Cloud Security / Senior Cloud Security Architect

Head of Cloud Security / Senior Cloud Security Architect

Head of Cloud Security / Senior Cloud Security Architect

• Full-time / Hybrid
• London-based

We are looking for an exceptional Head of Cloud Security / Senior Cloud Security Architect to join our growing cyber consulting practice.

This is a rare opportunity for a highly experienced cloud security leader to combine strategic advisory, technical excellence, and practice growth in a role that offers significant influence across clients, engagements, and the future direction of G3's cloud security capability.

You will work with senior client stakeholders to define cloud security strategies, lead complex transformation programmes, and help organisations securely adopt and scale modern cloud technologies. Alongside delivery leadership, you will play a key role in expanding our Cloud Security practice, and mentoring talent, developing propositions and our go-to-market profile.

What You'll Be Doing

As a trusted advisor and technical leader, you will:

• Design and deliver secure, resilient, and scalable architecture designs across AWS, Azure, and Google Cloud Platform environments.
• Advise on enterprise-scale cloud transformation, migration, and modernisation programmes, supporting across strategy through to implementation.
• Help clients establish and mature DevSecOps capabilities, embedding security into CI/CD pipelines, Infrastructure as Code, and cloud-native engineering practices.
• Drive cloud security governance, architecture assurance, security remediation, and control optimisation initiatives.
• Conduct security architecture reviews, threat modelling exercises, risk assessments, and cloud security maturity assessments.
• Contribute to business development activities, thought leadership, and the continued growth of our Cloud Security practice.

What We're Looking For

We're seeking an experienced cloud security professional who combines deep technical expertise with strong consulting and leadership capabilities.

• 10+ years experience in cloud security or related disciplines.
• Proven track record delivering complex cloud security programmes within enterprise environments.
• Strong expertise across cloud platforms, identity and access management, network security, data protection, and security operations.
• Experience designing and implementing secure cloud architectures across AWS, Azure and/or Google Cloud Platform.
• Deep understanding of modern security frameworks and architectures, including Zero Trust principles.
• Excellent stakeholder management, communication, and client-facing consulting skills.
• Experience leading teams and driving successful outcomes in complex delivery environments.

One or more of the following (or equivalent):

• CISSP
• CCSP
• AWS Security Specialty
• Microsoft Cybersecurity Architect Expert
• Google Professional Cloud Security Engineer

Key attributes

You are comfortable discussing cloud security strategy with board-level stakeholders as you are reviewing architecture diagrams or challenging technical design decisions.

You enjoy solving complex problems, building trusted client relationships, and helping teams perform at their best.

Most importantly, you bring an entrepreneurial mindset and a genuine enthusiasm for helping grow a high-performing Cloud Security practice.

Why Join Us?

• Opportunity to shape and lead a growing Cloud Security capability.
• Work on complex, high-profile cloud security programmes across multiple industries.
• Influence senior client stakeholders and strategic security decisions.
• Collaborative, supportive, and technically strong consulting environment.
• Significant scope for professional growth, leadership, and career progression.
• Flexible working arrangements, with occasional office presence (approximately once every two weeks) desirable.
• Salary: competitive, based on experience.
• Flexible working balance of home and office (London).
• Stakeholder employer pension contribution of 5%.
• Family friendly company - including enhanced maternity and paternity pay.
• Private medical insurance including generous terms of cover for both medical hospital, dental and mental health support for you, your partner and children (subject to T&Cs of the policy).
• Life insurance - 4 x annual salary.
• 25 days holiday per year in addition to bank holidays.
• Cycle to Work Scheme.

Please note that you need to have the right to work in the UK for this role.

We are committed to creating a diverse and inclusive workplace and encourage applications from all qualified individuals, regardless of race, gender, disability, or any other characteristic.

We conduct rolling interviews to ensure a timely hiring process, so candidates are encouraged to apply early as positions may close once suitable applicants are found.