Cloud Security Engineer AWS - Tesco Mobile in Slough

As a Cloud Security Engineer within the Run and Operate chapter at Tesco Mobile, you'll play a key role in securing and optimising our cloud platforms primarily AWS and Azure. You'll help design, manage, and deploy secure solutions across a variety of environments, maintaining a proactive programme of work to address evolving security priorities. Your responsibilities will include identifying threats and risks, implementing effective mitigations, and validating infrastructure changes. You'll also collaborate closely with the Cyber Security Team and your squad to embed robust security checks into CI / CD pipelines, strengthening our overall cloud security posture.

Key Responsibilities

• Lead and implement cloud security improvements across AWS and Azure environments.
• Use tools like AWS Security Hub and Azure Security Center to monitor and enhance our security posture.
• Integrate security controls into CI / CD pipelines and development workflows.
• Collaborate with the Cyber Security Team and application developers to embed security processes.
• Validate infrastructure changes to ensure compliance with security standards.
• Act as an expert on cloud and infrastructure security.

Requirements

• Strong hands-on experience with AWS cloud security.
• Proven track record of delivering cloud and SaaS security improvement projects.
• Familiarity with CI / CD pipelines and integrating security tooling (e.g., SAST).
• Experience with infrastructure validation, threat identification, and risk mitigation.
• Hands-on experience with Azure cloud security.
• Familiarity with Splunk, IaC tools, and automation using AWS CLI, Python, or PowerShell.
• Exposure to containerisation (Docker, Kubernetes) and DevOps practices.

Nice to have

• GitHub and GitHub Actions experience.

Benefits

• Annual bonus scheme of up to 20% of base salary.
• Holiday starting at 25 days plus a personal day (plus Bank holidays).
• Buy holiday salary sacrifice scheme (for salaried roles).
• Private medical insurance.
• Retirement savings plan – save between 4% and 7.5% and Tesco will match your contribution.
• Life Assurance – 5 x contractual pay.
• 26 weeks maternity and adoption leave (after 1 year service) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, we also offer 4 weeks fully paid paternity leave.
• The right to request flexible working from your first day with us.
• Free 24/7 virtual GP service, Employee Assistance Programme (EAP) for you and your family, free access to a range of experts to support your mental wellbeing.
• A Colleague Clubcard for you & a family member (after 3 months of service), giving you access to lots of discounts in-store & online.
• Great colleague deals and discounts, saving you money on everyday purchases, eating out and utility bills for the home.
• Access to colleague networks providing a space for colleagues to come together from a range of backgrounds.

Career Development

Opportunities to get on - take advantage of our ongoing learning opportunities and award-winning training, to help you achieve the job and career you want.

About us

Our vision at Tesco is to become every customer's favourite way to shop, whether they are at home or out on the move. Our core purpose is 'Serving our customers, communities and planet a little better every day'. Serving means more than a transactional relationship with our customers. It means acting as a responsible and sustainable business for all stakeholders, for the communities we are part of and for the planet. We are proud to have an inclusive culture at Tesco where everyone truly feels able to be themselves. At Tesco, we not only celebrate diversity, but recognise the value and opportunity it brings. We're committed to creating a workplace where differences are valued, and make sure that all colleagues are given the same opportunities. We're a big business with diverse working patterns and many business areas which means that we can find something that works for you. Everyone is welcome at Tesco. We have recently announced that we will be moving towards a more blended working week combining office and remote working. Our offices will continue to be where we connect, collaborate and innovate. Please talk to us about how this can work for you.

Important Note

Should you be successful in your application, your offer will be subject to and conditional upon you providing your bank account details on your agreed start date. We're proud to have been accredited Disability Confident Leader and we're committed to providing a fully inclusive and accessible recruitment process. For further information on the accessibility support we can offer, please visit.