DevOps Engineer (Senior Platform Security Engineer)


DevOps Engineer (Senior Platform Security Engineer)

Location:

Bristol

Work Model:

hybrid

Industry:

Software Development

Contact Name:

Pete Hills

Salary:

£620.00 Per Day

Date Published:

14-Aug-2025

We're looking for a highly skilled Senior Platform Security Engineer for a role focused on AWS platform security, supporting over 1000 microservices. You'll follow DevSecOps principles and work extensively with Infrastructure as Code (IaC) and security service development. This role is Inside IR35 and remote, with one day per month onsite in Bristol. 

Key Responsibilities:
  • Develop and maintain in-house open-source AWS scanner tools written in Python, deployed as AWS Lambdas, with full unit test coverage.
  • Integrate compliance alerting tools with Slack and PagerDuty for real-time security notifications.
  • Build and manage Python-based AWS Lambda tools for monitoring and alerting on AWS CloudTrail events, focusing on sensitive role assumptions and API activity.
  • Manage multi-account AWS IAM roles and assess IAM security risks, including privilege escalation and Service Control Policies.
  • Maintain internal open-source tools written in Go and Java, deployed as AWS Lambdas.
  • Architect and implement AWS security services such as Session Manager, Config, and GuardDuty to enhance platform security posture.
  • Collaborate with platform teams to identify and mitigate risks, conduct threat modelling, and provide security guidance.
  • Assess CVEs and vulnerabilities for Linux and other software used within the platform.

Essential Skills & Experience:
  • Expertise in AWS platform security and architecture.
  • Proficiency in Python for developing AWS Lambda functions.
  • Experience with Infrastructure as Code (IaC) and DevSecOps practices.
  • Strong understanding of AWS IAM, CloudTrail, Config, GuardDuty, and Lambda.
  • Knowledge of Bitwarden and integration with user management systems.
  • Familiarity with CVE assessment and Linux security.

Desirable:
  • Strong communication and stakeholder engagement skills.
  • Experience in government or regulated environments.
  • Ability to work independently and proactively in a remote-first team.
Apply Now

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