OAT Engineer (Operational Acceptance Test) | Remote

The Role

We’re looking for an experienced Operational Acceptance Test (OAT) Engineer to take ownership of end-to-end operational testing across cloud-based services. This is a key role ensuring systems are fully validated, resilient, and production-ready before release. You’ll work closely with DevOps, infrastructure, and release teams to guarantee smooth transitions into live environments.

Key Responsibilities

• Lead the Operational Acceptance Testing (OAT) process across the full delivery lifecycle
• Define and implement OAT strategies, plans, and acceptance criteria
• Validate system reliability, resilience, failover, and recovery capabilities
• Collaborate with DevOps and Release teams to support production readiness
• Conduct cloud-based testing across backup, recovery, and monitoring processes
• Ensure adherence to SLAs, security standards, and disaster recovery requirements
• Manage defects, risks, and issues through to resolution
• Produce reporting on test progress, outcomes, and risk assessments
• Support and mentor junior team members

Essential Skills & Experience

• Strong experience in Operational Acceptance Testing (OAT)
• Deep understanding of operational readiness areas including monitoring, resilience, backup/recovery, and release management
• Experience with CI/CD pipelines (e.g. Jenkins) and test automation
• Knowledge of AWS and/or Azure cloud environments
• Experience working within Agile and DevOps environments
• Solid understanding of Linux, databases, and networking fundamentals
• Strong stakeholder engagement and communication skills

Desirable Skills

• Experience with performance testing tools such as JMeter or LoadRunner
• Knowledge of containerised environments (Docker, Kubernetes)
• Relevant certifications (ISTQB, ITIL, AWS/Azure)

The Details

• Contract Role – 6 months + extensions.
• Start Date: May
• Location: Remote but occasional (bi-weekly) site visits
• Clearance: Ideally SC, but open to those who are eligible
• Rate: £325p/d – £330p/d
• IR35: Inside IR35

If you’re a hands-on OAT specialist who thrives in cloud environments and wants to play a key role in delivering resilient, production-ready systems, we’d love to hear from you.