Senior Full Stack .NET Developer (Web Dev/CS) - REMOTE working

Application Deadline: 22 June 2026

Department: IT

Location: London

Description At Mountain Warehouse we understand that technology is core to our success as a business and so we invest heavily in our in-house team. The development department is divided into product-based teams, all using variants on Kanban for project prioritisation and a focus on continuous delivery, mostly with usage of microservices.

We are a collaborative team with a strong culture of code review, occasional usage of pair programming and lots of unit tests. We’re keen to write code following best practice and to continuously find ways that we can be even better. The work is a mixture of green-field and legacy projects (much like any other mature organisation) mostly using C#, SQL Server, Next.js, React & TypeScript, with a combination of monolithic and microservices architectures.

Key Responsibilities We are looking for technically strong and organised senior developers to join the Web Development team and the team responsible for systems related to Customer Experience and Customer Service.

The applications are a mixture of internal services and public-facing applications, based on a range of tech stacks and across cloud, datacentre, and modern edge/serverless environments.

We Would Like To Meet Someone Who Is

• Minimum 6 years of solid C# in a commercial environment
• Minimum 4 years’ commercial experience of React/TypeScript
• Produces initial results rapidly and iterate based upon feedback.
• Knowledge of microservice design principles - preferably with commercial experience.
• Experience with modern git workflows.
• Effective communicator and excellent communication skills.
• Makes pragmatic implementation decisions and can fail fast if an approach is not working.
• Understands projects and project goals in depth.
• Experience or willingness of mentoring junior members of a team.
• A strong desire to create high-quality, tested code.

A selection of what we’re using across the department, let us know what you have experience of; we can train in the rest.

• Microservices architecture.
• Docker, Kubernetes in Azure, Vercel.
• Jenkins / BitBucket Pipelines for CI/CD.
• RabbitMQ / MassTransit.
• Microfrontends.
• Test Driven Development.
• RESTful API design.
• GraphQL APIs.
• Integrations with third-party APIs and SaaS platforms.

Benefits

• Competitive salary and benefits package
• REMOTE working
• Holiday allowance
• 50% staff discount & 25% for family and friends
• Pension scheme