Company: ao.com
Location: Stockport
Posted: April 17th, 2026
We’ve recently welcomed musicMagpie to the AO family, a company that shares our passion for putting customers first, caring about colleagues and making a real difference. Together, we’re set to make an even bigger difference and with that comes exciting opportunities to shape the future of sustainable tech.
musicMagpie are on a mission to make tech more affordable and help protect the planet by encouraging recycling, refurbishing, and repurposing tech and physical media products. They give millions of customers a smart, sustainable, and trusted way to buy, sell, and rent phones, tablets, games consoles, laptops, and other tech - all in one place.
We’re looking for a Senior .NET Developer, to be a core part of one our cross functional teams. Each of our cross-functional teams owns a series of platforms, from development and infrastructure through to ongoing support, so you’ll be a key part of delivering features, enhancements, and general tech related updates within the team. In addition, our teams maintain their own pipelines and infrastructure using IaC best practices.
You’ll be working in an agile team, supporting and mentoring the team in design, development and making high level technical decisions, whilst also working with Product Owners, developers, and external stakeholders to define and work towards achievable goals.
You’ll be getting hands-on with building modern .NET Core applications and helping us move legacy systems over to newer tech (bonus points if you’ve touched Ruby or VB, but it’s definitely not a must). You’ll play a big part in shaping our service‑driven architecture, working with .NET Core, APIs and MySQL, and making sure everything we deliver is clean, secure and easy to maintain. You’ll build and deploy into Azure, keep our cloud infrastructure resilient, and drive technical improvements from idea stage right through to production. Collaboration is a big part of the role too — whether that’s partnering with UI Developers for end‑to‑end solutions, working closely with business stakeholders, or supporting the rest of the team to level up. You’ll be designing and working with RESTful APIs, delivering in a CI/CD environment, and always pushing for high coding standards across the team.
musicMagpie is the surprisingly quick and easy way to declutter and get cash for your stuff, which is why millions of people use us every year to sell their mobile phone, games consoles, tablets, smartwatches, CDs, DVDs, games, books, blu-rays & much more. We've paid hundreds of millions to our happy customers - the smart, sustainable and trusted way to shop and sell.
As a pioneer in the circular economy, we’ve built a trusted platform using our circular model of recycling, refurbishing, reselling and renting products to give tech a second life and help to reduce e-waste on a massive scale.
As a musicMagpie employee, you’ll be part of a company that’s making a real difference, redefining how people buy and sell tech, and shaping a greener, more sustainable future. Plus, you’ll have the chance to learn, grow and innovate alongside a team that’s friendly, supportive and always looking ahead!