Senior Backend Developer

We're looking for a passionate Senior Backend Developer who thrives on solving complex problems and building systems that scale. You'll be at the forefront of creating next-generation backend services that genuinely make a difference for our customers and business.

In this role, you'll have the freedom to lead, the support to grow, and the chance to mentor others — because we believe learning and sharing knowledge is what makes a team truly exceptional.

We believe great work happens when talented people have the best tools. That's why you'll have top-of-the-range equipment and a workspace designed for creativity, collaboration, and getting things done.

Job Title: Senior Backend Developer
Location: Liverpool City Centre on a hybrid working basis
Salary: £65,000–£75,000 depending on experience

• Build and maintain scalable microservices in .NET 8.0 and Azure.
• Write clean, testable code with a focus on performance and maintainability.
• Collaborate with product owners and designers to shape features from concept to delivery.
• Participate in code reviews and mentor junior developers.
• Architect robust APIs and database solutions with clean, maintainable code.
• Deploy and manage applications using Docker and Azure cloud services.
• Contribute ideas, share feedback, and grow together with a team that values openness and collaboration.
• Bonus:
  Clean Architecture Understanding Clean Architecture and Mediator Pattern is a huge plus! If you have it, you'll help us build maintainable, testable systems that follow industry best practices.
• Database
  : SQL Server, Entity Framework
• Tools
  :
  Unit and Integration Testing, Git, Agile methodologies

• Proven senior-level experience building microservices running on Docker.
• Expertise in C#, .NET 8.0, and ASP.NET Core.
• Strong experience with SQL Server and Entity Framework.
• Hands‑on experience with Unit and Integration Testing.
• A natural collaborator with strong communication skills — you thrive in a team setting.
• A culture fit who loves mentoring others, sharing ideas, and helping the whole team level up.
• Self‑motivated, with a problem‑solving mindset and a passion for building robust, scalable systems.
• Understanding Clean Architecture and Mediator Pattern is desirable but not mandatory.

• Understanding Clean Architecture, Mediator Pattern
• Solid grasp of asynchronous communication in distributed systems
• Experience with high‑throughput, data‑intensive systems
• Contributed towards systems utilising Event‑Driven Architecture

• Modern tech stack and a strong culture of engineering excellence
• Hybrid options within the UK
• Career progression into tech leadership or architecture
• Supportive environment with clear standards and plenty of opportunity to innovate

With over 40 years of experience, Acorn Insurance is a specialist provider dedicated to helping individuals secure motor insurance across the UK. We proudly serve more than 50,000 customers, ensuring they find policies that meet their needs and provide the peace of mind that comes with high‑quality cover.

At Acorn Insurance, we offer comprehensive training and continuous in‑house coaching. You'll receive in‑depth, FCA‑regulated industry knowledge and all the tools necessary to grow your career with us.

We celebrate diversity and are committed to fostering a culture where everyone feels respected and valued. As a Disability Confident employer, we ensure our workplace is accessible and inclusive, encouraging our people to bring their best selves to work every day.

The Acorn Group has been recognised as a Great Place to Work for 2024/5.

At Acorn Insurance , we’re proud of our Liverpool roots — and even prouder of how far we’ve come. As part of the Acorn Group , we bring over 40 years of specialist insurance expertise to the table. From humble beginnings, we’ve grown into a national leader, now employing 1,700+ people across the UK and reached a milestone £750 million in total value of insurance policies written in 2024.

We’re growing fast, with new opportunities emerging every week. That growth is largely due to the values we share :

🦏 W e run through walls for our customers…