Senior Software Engineer

Senior Security Engineer – AWS & Application Security

Up to 100k - Fully remote within the UK

No Sponsorship will be provided for this role.

We’re looking for a hands-on Senior Security Engineer to strengthen the security of our applications, AWS infrastructure and wider engineering environment.

This role would suit someone with a strong software development background and experience securing cloud environments, particularly AWS. You’ll work closely with development and infrastructure teams to identify vulnerabilities, implement fixes and improve security practices across the engineering function.

What You’ll Be Doing

• Identifying and resolving vulnerabilities across applications, APIs and backend services.
• Strengthening AWS security, including IAM, networking, ECS, Lambda and permissions.
• Reviewing and improving infrastructure security using Terraform and CloudFormation.
• Improving application security across authentication, authorisation and API protection.
• Managing security tooling, monitoring and vulnerability remediation.
• Introducing security testing and automated checks into CI/CD pipelines.
• Working alongside developers to promote secure coding practices.

What We’re Looking For

• Strong commercial experience with JavaScript, TypeScript and Node.js.
• Hands-on experience with AWS security, particularly IAM and cloud infrastructure.
• Strong understanding of application security and vulnerability management.
• Experience with Terraform, CloudFormation or similar Infrastructure as Code tools.
• Knowledge of CI/CD security, automated testing and secure development practices.
• Experience investigating security threats and responding to incidents.

Technical Environment

• Backend: JavaScript, TypeScript, Node.js and Python.
• Frontend: React and React Native.
• Cloud: AWS (ECS, Lambda, SQS, SNS).
• Infrastructure: Terraform and CloudFormation.
• Data: MongoDB and Snowflake.
• Security: AWS IAM, Wiz and application security tooling.

The Opportunity

An opportunity for a technically strong engineer to take ownership of security across a modern AWS environment. You’ll combine your development experience with cloud and application security, helping shape engineering standards and deliver practical improvements to the organisation’s overall security posture.