Senior Test Engineer - D365

About The Role

We're looking for a Senior Test Engineer to help drive quality across one of the biggest transformations we've ever delivered. You'll play a key role in our D365 journey, getting hands-on across functional, integration, API, automation and UAT testing to make sure what we build works exactly as it should.

This isn't a role where you'll sit on the sidelines. You'll be working closely with engineers, implementation partners and business teams, understanding how things really work, spotting risks early, and helping us release with confidence. As one of our testing leads, you'll take ownership of end-to-end test activities, champion quality throughout the delivery lifecycle, and look for ways to continually improve how we test.

If you're someone who enjoys solving problems, challenging assumptions, and making complex change feel simple and seamless for customers and colleagues alike, you'll fit right in at AO.

Here's What You Can Expect To Be Doing

Day to day, you’ll be rolling up your sleeves and getting involved in all things testing. From shaping test coverage to running SIT and UAT cycles that reflect real-world use. You’ll create and execute meaningful test scenarios that focus on what’s changed and where the risks are, while also validating end-to-end journeys across D365 and its integrations. Automation will be a big part of your role, where you’ll build and maintain Playwright (JavaScript) tests for key user flows and develop reliable API checks using Postman and Newman to catch issues early. You’ll help keep environments ready for testing, troubleshoot when things go wrong (whether it’s data, config, or integrations), and work across APIs, middleware, and events to pinpoint problems quickly.

Alongside this, you’ll support performance testing, help improve test data management, and collaborate closely with BAs and engineers to bring testing earlier into the process, making releases smoother and more predictable.

A Few Things About You

• Solid, hands-on testing experience within D365 programmes (Finance & Ops, Supply Chain or WMS is a bonus)
• Comfortable being on the tools — executing tests, investigating issues, and seeing fixes through
• Strong experience with UI automation using Playwright (JavaScript)
• Experience building API/integration test coverage using Postman and running tests via Newman
• Confident testing end-to-end integrations and using logs/data to get to root cause quickly
• Good understanding of test data management and keeping testing environments usable
• Experience with SIT, UAT, regression, and end-to-end testing approaches
• Clear communicator who works well with both technical and non-technical teams
• Calm, practical, and solutions-focused mindset
• Keen to improve ways of working without overcomplicating things

A Bit About Us

We’re big on appliances and electricals, REALLY big. Washing machines, fridge freezers and TVs? They’re our bread and butter. Mobiles, Airwraps and Ring doorbells? Yep, those too. If it plugs in, powers up or makes life easier, AO probably has it.

But we’re more than that… For over 25 years, trust has been at the heart of everything we do, helping us become the UK’s most trusted electrical retailer. Our customers rate us 4.9 on Trustpilot from nearly ONE MILLION reviews and more 5-star ratings than any other UK electrical retailer, because they know they can rely on us and it’s the exact same for our AOers too.

We truly believe it’s more than just a job, we genuinely care about each other and our impact on making our customers lives easier, by helping them brilliantly. Everyone here knows how their role makes a difference. Our people are our superpower, so, when it comes to finding new AOers, we know it’s about more than just a CV, it’s about what makes you, YOU.

Our Benefits

Our benefits are designed to cover the moments that matter to AOers. From health and wellness to giving back - you’ll be rewarded inside and outside of work.

• Holidays; 25 days, plus bank holidays (increasing to 27 days after 2 years with us!)
• Pension; Contribute 5% of your annual salary and we'll do the same, giving you a little extra support for the future.
• Be a VIP at the AO Arena; we have loads of opportunities to win free tickets and pre-sale access!
• Health & wellbeing; discounted gym membership, an onsite spa and our Help @ Hand scheme giving you access to virtual GP’s, Mental Health support and much more.
• Discounts; exclusive discounts across our product range.
• Family leave; Enhanced Maternity, Paternity and Adoption leave.
• Making a difference; 2 fully paid days a year to donate your time to any charity of your choice.
• On site perks; start your day with free on site parking, grabbing a complimentary breakfast and a coffee at our subsidised in house coffee shop!

To see all our benefits and perks, visit our AO Benefits page.