Platform Engineer

Immersum; Leeds; Hybrid; GBP 60,000 - 90,000; Full time

Job summary

Immersum is expanding its Platform team in Leeds with two DevSecOps/Platform Engineers. You will help build secure, scalable AWS infrastructure, embed security practices, and support ongoing migration of critical systems into AWS.

You’ll join a tight-knit team delivering security tooling, IaC, and automation, with ownership and influence over technical direction in a fast-moving environment.

Qualifications

• Commercial experience with AWS infrastructure.
• Experience working with Terraform.
• Exposure to Kubernetes, ideally Amazon EKS.
• Knowledge of DevSecOps or cloud security principles.
• Experience automating infrastructure with Ansible.
• Understanding of CI/CD pipelines.
• Strong troubleshooting skills and a proactive approach to problem solving.

Responsibilities

• Build secure, scalable AWS infrastructure while embedding security best practices across the organisation.
• Deliver initiatives from a significant security roadmap and support day-to-day platform operations.
• Migrate on-premise infrastructure into AWS and maintain infrastructure as code with Terraform.
• Manage Kubernetes workloads on Amazon EKS and automate tasks with Ansible.
• Collaborate with external security consultants to triage and respond to platform and security alerts.
• Roll out new security technologies (GuardDuty, CloudTrail, Panther, SentinelOne, Tailscale).
• Contribute to platform reliability, monitoring and operational improvements, supporting event-driven architecture.

Skills

Ownership

Communication

Collaborative

Education

Bachelor’s degree

Tools

AWS

Terraform

Ansible

Kubernetes / EKS

GitLab CI/CD

GuardDuty

CloudTrail

Tailscale

Job description

Location: Leeds (Hybrid - 3 days per week in the office)

Tech: AWS, EKS, Terraform, Ansible, GitLab, GuardDuty, CloudTrail

We're looking for two DevSecOps / Platform Engineers to join a growing platform team at an exciting stage of its evolution. Having recently established a dedicated Platform function, the team is now investing in two additional hires to help strengthen cloud security, improve operational resilience, and support the continued migration of critical infrastructure into AWS.

This is an opportunity to join a technology business where you'll have genuine ownership, influence technical direction, and work on modern cloud infrastructure without the bureaucracy often found in larger enterprises.

The Role

You'll work closely with a small, highly collaborative Platform team, helping to build secure, scalable AWS infrastructure while embedding security best practices across the organisation.

The business has recently completed a comprehensive security review with specialist consultants and is now implementing a significant roadmap of improvements. You'll play a key role in delivering these initiatives while supporting day-to-day platform operations and cloud infrastructure.

Projects include:

• Implementing AWS security tooling and best practices
• Supporting the migration of on-premise infrastructure into AWS
• Building and maintaining Infrastructure as Code using Terraform
• Managing Kubernetes workloads running on Amazon EKS
• Automating operational tasks with Ansible
• Working alongside external security consultants to triage and respond to platform and security alerts
• Rolling out new security technologies including GuardDuty, CloudTrail, Panther, SentinelOne, Tailscale and modern endpoint management solutions
• Contributing to platform reliability, monitoring and operational improvements
• Supporting event-driven architecture and messaging infrastructure

Tech Environment:

• AWS
• Terraform
• Ansible
• GitLab CI/CD (Jenkins experience also considered)
• GuardDuty
• CloudTrail
• Tailscale

Experience with FinOps, cloud cost optimisation or cloud security tooling would be advantageous but isn't essential.

About You:

We're interested in engineers who enjoy taking ownership and solving problems rather than waiting to be directed. You'll be someone who communicates well, enjoys collaborating with others and is comfortable working in a fast-moving environment where you'll have the opportunity to make a real impact.

You'll ideally have:

• Commercial experience with AWS infrastructure
• Experience working with Terraform
• Exposure to Kubernetes, ideally Amazon EKS
• Knowledge of DevSecOps or cloud security principles
• Experience automating infrastructure with Ansible
• An understanding of CI/CD pipelines
• Strong troubleshooting skills and a proactive approach to problem solving

Who We're Looking For:

The team is hiring at multiple levels.

For more junior candidates, we're looking for around two or more years of commercial experience alongside a strong academic background.

For more experienced engineers, you'll bring proven production experience across AWS platform engineering and cloud security, with the ability to help shape best practices within a growing team.

Candidates from startup, scale-up or smaller consultancy environments are likely to thrive. We're particularly interested in engineers who enjoy being hands-on and taking responsibility, rather than those coming from highly siloed enterprise environments.

Interview Process

Stage 1:

Video interview with the hiring managers

Stage 2:

On-site interview in Leeds (approximately 90 minutes), including technical discussion, practical exercises and the opportunity to meet the wider team

Final Stage:

Meeting with the Managing Director

If you're looking for a role where you'll have genuine ownership, work with modern AWS technologies, and help shape the future of a growing Platform function, we'd love to hear from you.