Senior Backend Software Engineer - Avayler

About us

Halfords is quickly becoming a digital services business. In addition to being a leading UK retailer, Halfords has now developed a market leading field service management platform that enables businesses to deliver their complex services to customers through an end-to-end digital solution. The platform is deployed throughout Halfords stores, garages and their mobile business. The platform has now been taken to market to enable other businesses in our sector and other industries globally to deliver market leading service delivery and an unrivalled customer experience. This SaaS division is called Avayler (Avayler.com).

Avayler is marketed in the UK, Europe and the US. We have a highly experienced technology team that have developed our platform, and have sales, product, and marketing functions already in place, led by seasoned industry veterans. Now with the launch of the platform and the launch of our clients, we are looking for an experienced Senior Software Engineer in our business.

If you’re willing to get stuck in, you’ll love it here too. So put yourself at the heart of a dynamic, fast-paced working environment where expertise and focus take people far.

The role

As a Senior Software Engineer, you’ll play a critical role in evolving a fast-scaling platform that’s transforming service delivery across the automotive industry. From designing scalable APIs and writing clean, efficient .NET code to building features that truly deliver for our global clients, you'll be a hands-on contributor to a product that's making real-world impact at pace and scale.

You bring deep experience across the stack, with strong C# skills, a solid understanding of both relational and NoSQL databases, and a test-driven mindset. You're confident making architectural decisions, identifying technical debt, and finding smart, pragmatic solutions. Just as importantly, you enjoy working in a collaborative environment, mentoring junior engineers, supporting peers, and contributing to a healthy, high-performing engineering culture.

For you, this is an opportunity to lead by example while still getting stuck into the code. You’ll play a key part in shaping the technical direction of a growing product and engineering team, where your experience, ideas, and leadership will help define how we build, scale, and improve our platform.

Key responsibilities

• Contribute to the ongoing development of our core platform, delivering high-quality, scalable software solutions
• Design, build, and maintain backend services using .NET, ensuring performance, security, and reliability across multiple client implementations
• Develop and maintain robust APIs for frontend consumption, with a strong focus on clean architecture and reusable components
• Write and maintain effective unit and integration tests to ensure software quality and confidence in deployment
• Identify and resolve bugs and performance bottlenecks, continuously improving the stability and efficiency of the platform
• Collaborate closely within a cross-functional squad, participating in all stages of the software delivery lifecycle from planning and coding to deployment and retrospectives
• Bring a forward-thinking approach to engineering, balancing long-term maintainability with short-term delivery needs
• Contribute to a culture of learning and continuous improvement by engaging with internal communities and staying up to date with modern engineering practices

About you

• Solid commercial experience with .NET and C#, and are confident writing clean, maintainable backend code
• Proven experience working with both relational databases (ideally PostgreSQL) and NoSQL technologies
• Hands-on experience developing APIs, ideally with experience of RESTful services, and understand how to build for performance, scalability, and security
• Strong knowledge of writing unit and integration tests, ensuring high-quality code from the start
• Familiarity with agile methodologies and thrive in a fast-moving, iterative environment
• Ability to solve technical and product problems collaboratively, taking initiative to improve solutions rather than simply completing tickets
• Curious about cloud platforms (e.g., AWS, Azure, GCP) and eager to build your knowledge, even if you’re not an expert yet

Reward & benefits

• A fair and competitive salary evaluated against market data, annual discretionary bonus scheme, pension, life assurance, 25 days annual leave plus bank holidays and enhanced family leave.
• Commitment and dedication to your ongoing personal and professional development. We help you to own and grow your potential so you can be at your best in your current role and to support your future career aspirations.
• You will have access to a wealth of employee discounts across the Halfords suite of products and services.
• Wellbeing and inclusion are at the heart of our colleague experience. We offer resources and ongoing support to enhance your wellbeing at work and active Colleague Networks supporting inclusion initiatives across Halfords.

Not sure you meet all the criteria? We'd encourage you to take the wheel and apply anyway! At Halfords we are committed to creating an inclusive workplace for our colleagues. We're an equal opportunities employer and proud to welcome applications from all backgrounds and embrace diversity within our one Halfords Family.

This position is mostly remote, but will require occasional travel when necessary.