Senior Backend Engineer (.NET)

Benefex Limited; Southampton; On-site; GBP 55,000 - 75,000; Full time

Job summary

A leading technology firm in Southampton is seeking a Senior Backend Engineer to help build and modernise its Benefits platform. The ideal candidate will have extensive experience in C#.NET and .NET Core, with a focus on scalable solutions. Responsibilities include leading backend design, collaborating across teams, and implementing cutting-edge technologies. Join a diverse and inclusive workplace committed to equality.

Qualifications

• Extensive experience in backend development with C#.NET and .NET Core.
• Proven knowledge of Kubernetes and containerisation.
• Experience with modern architectural patterns.

Responsibilities

• Lead the design and development of scalable backend solutions.
• Collaborate with Product and Engineering teams for high-quality delivery.
• Implement and maintain CI/CD pipelines for seamless deployment.

Skills

C#.NET

Kubernetes

Microservices

CI/CD pipelines

Event-driven systems

Proactive Problem-Solving

Technical Excellence

Tools

Google Cloud Platform

Redis

Terraform

Job description

Role Overview

We're hiring for a Senior Backend Engineer with a focus on .NET to help build and modernise our Benefits platform. This is an exciting opportunity to drive the evolution of a key product by implementing cutting-edge technology, refining technical best practices, and fostering collaboration across global teams.

Responsibilities

• Lead the design and development of modern, scalable backend solutions for our Benefits product using C#.NET and .NET Core.
• Collaborate closely with Product and Engineering teams to define technical requirements, ensure high-quality delivery, and drive architectural decisions.
• Modernise existing systems by introducing microservices, containerisation (Kubernetes), and cloud-native practices.
• Implement and maintain CI/CD pipelines to ensure seamless deployment and delivery processes.
• Advocate for and implement best practices in coding, architecture, and process, ensuring a high standard of technical excellence.
• Work effectively with remote teams to deliver cohesive and robust solutions.
• Collaborate with engineers from Java Spring Boot backgrounds to ensure seamless integration and knowledge sharing.

Tech stack: .NET, SQL, GCP, MSMQ (moving to Google Pub/Sub), Kubernetes.

What are we looking for?

• Extensive experience in backend development with C#.NET and .NET Core, with a focus on scalable, maintainable solutions.
• Proven knowledge of Kubernetes and containerisation to support modern infrastructure practices.
• Experience with modern architectural patterns, including microservices, CQRS and event-driven systems. Bonus points for experience with circuit breaker, transient fault handling, outbox patterns, dead letter handling.
• Hands-on experience with messaging systems like Pub/Sub, distributed transaction coordination (MSDTC), and caching solutions like Redis.
• Proven ability to set up and maintain CI/CD pipelines to streamline development and deployment workflows.
• Solid understanding of system performance, optimisation, and debugging.
• Collaboration: Ability to work effectively with cross-functional and remote teams, including Java Spring Boot engineers, to deliver cohesive solutions.
• Proactive Problem-Solving: A resourceful approach to tackling complex challenges and driving projects forward with minimal guidance.
• Technical Excellence: A strong advocate for clean code, best practices, and high-quality software development.

Bonus Points for

• Experience with cloud technologies, particularly in deploying and scaling .NET applications.
• Familiarity with observability tools for monitoring, logging, and alerting (e.g., Grafana, Prometheus).
• Knowledge of IaC tools such as Terraform.
• Previous experience modernising legacy systems or transitioning monolithic architectures to microservices.

Even if you don\'t meet all of the requirements for this role, we encourage you to apply! We are looking for talented and passionate individuals who are eager to learn and grow. We also offer a variety of other roles, so please check out our careers page to see if there is something else that might be a good fit for you.

Our interview process

1. Initial informal call with the Talent team
2. Interview with our Engineering Manager – 30 min
3. Technical Task
4. Technical Interview – 60 min
5. Final interview with VP of Engineering – 30-45 min

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

We are committed to creating a diverse and inclusive workplace where everyone feels welcome and respected. We believe that diversity and inclusion are essential to our success, and we are proud to be an equal opportunity employer.

We are a proud member of the Disability Confident employer scheme.

If you require any reasonable adjustments at any stage during the recruitment process, please let us know with your application.