Security Engineer in London

Dentsu is an integrated growth and transformation partner to the world's leading organizations. Founded in 1901 in Tokyo, Japan, and now present in over 145 countries and regions, it has a proven track record of nurturing and developing innovations, combining the talents of its global network of leadership brands to develop impactful and integrated growth solutions for clients. Dentsu delivers end-to-end experience transformation (EX) by integrating its services across Media, CXM and Creative, while its business transformation (BX) mindset pushes the boundaries of transformation and sustainable growth for brands, people and society.

A successful candidate will join dentsu's Cyber Security team and will focus on helping secure environments across our global business. In this role, you will be responsible for helping define security measures and maintain security platforms across a variety of enterprise and development environments. You will work closely with security platforms, SOC, security architects and developer teams to integrate security tooling and platforms, ensuring a secure and resilient infrastructure.

Key Responsibilities

• Implement and maintain enterprise security platforms, as well as custom environment-specific tooling.
• Support the deployment and maintenance of enterprise browser solutions and enterprise SSO security tooling.
• Drive efficiencies in processes and reporting metrics via automation and integrations.
• Support security controls throughout the CI/CD pipeline, including containerized environment, secret scanning, SCA and automated static and dynamic application security testing (SAST).
• Leverage cloud-native security solutions to support and automate manual security monitoring, threat detection, and incident response.
• Collaborate with SOC, vulnerability management, security architects and DevOps teams to validate findings, enhance cloud security posture and enforce compliance.
• Document, identify and train teams to ensure seamless handover of operational responsibilities post implementation, whilst providing L2/L3 support across multiple environments/teams when required.

Qualifications & Skills

• Strong understanding of security principles and engineering practices across enterprise, development and cloud environments.
• Hands on experience with enterprise security tools (e.g. Okta, Island Browser, Wiz, Sentinel, Defender, etc.)
• Strong experience with cloud platforms (Azure, AWS, GCP) and their security offerings.
• Experience in DevSecOps, cloud security, and CI/CD pipeline security.
• Familiarity with security tools commonly used in DevSecOps workflows (e.g. dependabot, detect-secrets, semgrep, trivy, Falco, Nuclei, SonarQube etc.)
• Solid understanding of network security, identity and access management (IAM), and cloud security posture management (CSPM).
• Strong scripting skills (Python, Bash, Terraform etc.) for automating security tasks and building custom security and reporting solutions.
• Must possess excellent technical, analytical and problem-solving skills, with a proactive approach to resolving issues and bridging personal knowledge gaps.
• Strong communication skills and the ability to work both independently, and collaboratively with cross-functional teams.
• Good presentation skills both verbal and written on both technical and non-technical information.
• Relevant certifications (e.g. Kubernetes Security Specialist (CKS), DevSecOps Practitioner, Azure Security Engineer, AWS Certified Security Specialty, GCP Professional Cloud Security Engineer etc.).

What we offer

This is a permanent role to work remotely with occasional travel to one of our offices in Manchester or London, NW1. As well as a competitive salary, you'll enjoy a benefits package that you can tailor to your needs.

Inclusion and Diversity

At dentsu, we embrace diversity and inclusion, valuing the unique perspectives and contributions of every individual. We believe that diversity fuels creativity and innovation, benefiting our employees, partners, and communities. We welcome applications from all individuals, regardless of race, ethnicity, nationality, religion, gender, gender identity, sexual orientation, age, disability, marital status, or any other protected characteristic. Beyond recruitment, we strive to create an environment where everyone feels respected, supported, and empowered to bring their authentic selves to work. We recognize the importance of work-life balance and are open to discussing flexible working arrangements for all roles. If you need reasonable adjustments due to a disability or medical condition during our recruitment process, please contact us at accommodations@dentsu.com, quoting the reference number of the role that you are applying for. Your needs will be handled with respect and confidentiality to ensure an inclusive and accessible experience.