Senior Security Engineer - Cloud & App Security (Remote UK)

Ronald James Group; United Kingdom; Remote; GBP 90,000 - 110,000; Full time

Job summary

Ronald James Group is seeking a hands-on Senior Security Engineer to strengthen security across AWS infrastructure, applications and the wider engineering environment. The role emphasizes development background, cloud security, and secure coding practices within a modern AWS stack.

You’ll collaborate with development and infrastructure teams to identify vulnerabilities, implement fixes, and elevate security standards across the organization’s engineering function.

Qualifications

• Hands-on experience with AWS security, IAM and cloud infrastructure.
• Strong knowledge of application security and vulnerability management.
• Familiarity with Terraform, CloudFormation or similar IaC tools.
• Knowledge of CI/CD security and secure development practices.
• Experience investigating security threats and incident response.

Responsibilities

• Identify and remediate vulnerabilities across applications, APIs and backend services.
• Strengthen AWS security including IAM, networking, ECS, Lambda and permissions.
• Review and improve infrastructure security with Terraform and CloudFormation.
• Improve application security across authentication, authorization and API protection.
• Manage security tooling, monitoring and vulnerability remediation.

Skills

AWS security

Cloud security

Vulnerability management

Secure coding practices

Incident response

CI/CD security

IAM and permissions

Tools

Terraform

CloudFormation

CI/CD tooling

Job description

Ronald James Group is seeking a hands-on Senior Security Engineer to strengthen security across AWS infrastructure, applications and the wider engineering environment. The role emphasizes development background, cloud security, and secure coding practices within a modern AWS stack.

You’ll collaborate with development and infrastructure teams to identify vulnerabilities, implement fixes, and elevate security standards across the organization’s engineering function.