Back to open roles


Senior .Net Developer

xDesign partners with the UK’s most ambitious brands to accelerate their digital product and engineering delivery, with offices in the centres of Edinburgh, Leeds, Manchester, and London as well as remote employees based throughout the UK.

We pride ourselves on working closely and collaboratively with our clients to craft intuitive user experiences and valuable products across a wide range of industries, technologies, and clients. This has seen us work with the likes of Aviva, MoneySuperMarket, Tesco Bank and Flutter, to name just a few.

Our reputation as a partner determined to deliver high-quality, robust and thoughtful products has enabled us to scale to over 500 people in the last couple of years. And it is this team of amazing people - and the great culture that we have built - that makes xDesign a great place to work. This combination saw xDesign ranked - for the third year running - in the UK’s Best Workplaces™ 2023 by Great Place to Work UK. Alongside this, we also placed top of the list for Best Workplaces for Wellbeing, 8th place in Best Workplaces for Women (within the large business category) and were recognised as one of the Best Workplaces in Tech for 2023.

Our team

We care about hiring great people who want to make meaningful contributions.

It’s important to us that we support and help each other, pushing colleagues to work hard and improve. We value everyone’s unique input and skills: developers, testers, product owners, project managers and designers all collaborate as equals on every project. That collaboration and teamwork is what helps us deliver innovative, exciting products for our clients.

To ensure everyone gets the help and encouragement they need, we’ve developed a structured progression framework to support development plans and career growth for each person within Engineering. You'll get close support from your line manager with your day-to-day work, and you’ll have the support and resources you need to evaluate your career growth and professional development.

Our tech

We develop web and mobile applications with scalable backend services in a variety of different languages and frameworks, with AWS as our primary cloud platform. Our CI/CD infrastructure varies with what makes sense - we have to balance customer requirements with making sure we have the right languages, frameworks and tools for the job and you will be an integral part of influencing these choices of technology.

The role

  • Developing backend services and APIs, including interaction with databases with a focus on readable, maintainable and well-tested code
  • Integrating with third-party APIs, such as payment gateways
  • Creating associated API documentation and working in partnership with developers consuming your APIs and services
  • Working as part of a cross-functional scrum team and contributing your expertise to drive the overall success of a project
  • Being an advocate for engineering best practice within your project team
  • Understanding users and identifying who they are and what their needs are
  • Using agreed standards and specifications to design, create, test and document new or amended software
  • Demonstrating understanding of common software engineering concepts
  • Creating robust code which is scalable with a long term impact and broader concerns underpinning decisions


We’d love to talk if you have:

  • Strong knowledge of API development using C# .NET/.NET Core, including ORM and dependency injection experience
  • Experience of working with other languages and associated frameworks / libraries such as:

    • JavaScript and Node.JS/Express or
    • Java and Spring/SpringBoot
    • TypeScript, Scala, Kotlin or Python
    • Django or Play

  • Enthusiastic and experienced when it comes to using engineering best practices, clean code and unit testing
  • Experience working as part of a cross-functional development team (using Agile practices)
  • Cloud experience using AWS or Azure would be a bonus

What we’ll offer you:

We have a transparent progression framework, so you have ownership of your future career at xDesign. We have both individual contributor (IC) and Engineering Management paths. We’re also set up to support internal mobility to other tech stacks.

We have an extensive and highly talented engineering community at xDesign for you to learn from. We have an Engineering Presenters session every fortnight where engineers present a technical topic to their peers.

We have a range of employee-led communities such as STEM, security, accessibility, neurodiversity and more. You can even start your own, everyone has an opportunity to make an impact on the wider business.

Our benefits include:

  • Total 35 days holiday (we have flexible bank holidays)
  • Comprehensive private medical insurance
  • Enhanced parental and adoption leave
  • 1-1 professional financial coaching
  • Up to 50% off an electric vehicle
  • Pension - matched up to 5%

View our complete list of benefits here.

Next steps:

Our TA team aims to respond to all applications within a reasonable timeframe, regardless of if we are progressing with your application.

Our process:

  1. 30-minute call with one of our Talent Acquisition Team
  2. 1-hour Technical Interview
  3. 30 or 60 minute Take home test OR Pair programming session
  4. 1-hour Values led interview

Our interview process is designed as an opportunity both for our interviewers to learn about your expertise, interests and motivations and for you to gain insights into xDesign, the role and the team. So, throughout the interview process you’ll meet a few people from our Engineering team as well as other colleagues from different parts of the business to help you get a well-rounded view of the role and life at xDesign.

We believe that representative teams made up of people with different backgrounds, skills, and points of view help us build the best workplace possible, and enable us to create genuinely innovative, broadly useful products.

We are committed to our goal of creating the most inclusive workplace possible. As we strive to build an environment where everyone can thrive and be themselves, we will continue to investigate and challenge biases, while working to identify and remove obstacles to inclusion. If you need additional support or accommodation during the application process, please don’t hesitate to let us know.

Apply now

Select from the list