At a Glance
- Tasks: Join a dynamic team to develop and scale a cutting-edge B2B SaaS platform.
- Company: A profitable, founder-built tech company with a collaborative culture.
- Benefits: Competitive salary, share options, flexible work environment, and team lunches.
- Other info: Opportunity to shape the engineering function and grow your own team.
- Why this job: Make a real impact on a product that powers businesses and influences future growth.
- Qualifications: Strong .NET/C# experience and familiarity with SQL Server required.
The predicted salary is between 60000 - 80000 £ per year.
A bootstrapped, profitable SaaS platform serving B2B operators across manufacturing, distribution, and wholesale - built lean, grown on reputation alone, and now at the point where the engineering team needs to grow. The product sits at the operational core of its customers' businesses. When it goes down, they stop. It rarely does.
The founder is the sole developer, and you would be the second. Working directly alongside the person who built and knows the system end to end, on a product that competes with the likes of NetSuite and SAP at a fraction of the cost and without the third-party consultant overhead those platforms require.
The stack is .NET Core on the backend, SQL Server and PostgreSQL, React on the frontend, everything running on Kubernetes (AKS) in Azure across EU and US regions. A legacy MVC layer is being migrated out - comfort reading Razor is useful, but new work is all Core and API. CI/CD is in place and releases move fast.
Roughly 90% of the role is development. The remaining 10% is DevOps awareness - understanding what is happening in Kubernetes, handling the occasional VM incident, not being thrown by a kubectl query. The infrastructure is stable and largely self-managing.
Non-Negotiables- .NET / C# - strong, production-level experience
- SQL Server - solid working knowledge (DBA level not required)
- Virtual machines - comfortable with VM environments
- Able to read and navigate legacy .NET MVC / Razor code
- Commercial software product development
- Azure (AKS) - Kubernetes clusters running EU and US workloads
- PostgreSQL (alongside SQL Server)
- React (frontend, primarily maintained by a separate engineer)
- HAProxy - VM monitoring and failover
- CI/CD pipeline - fast release cadence, multiple deploys daily
- Keycloak - authentication layer
- Marketplace and courier integrations (eBay, Amazon, Royal Mail, others)
- DevOps background or exposure to IaC
- Experience with multi-region deployments and failover architecture
- Leadership experience or appetite - there will be juniors to bring in as the team grows
- Familiarity with AI tooling - the team is building with it
The codebase was built by one person and the near-term work is making it team-ready - organising it, adding features, laying the foundations for a growing team. The business ships fast and there is a full product roadmap to get through.
It is bootstrapped and profitable, the founder is open to good ideas, and whoever joins now will have real influence on how the engineering function takes shape, as well as have the opportunity to eventually grow their own team. The product is also more modern than the legacy layer suggests - an MCP integration is already live and the team builds with AI tooling.
Employee Benefits- Share options - intended for the right person as the business formalises the scheme
- Thursday team lunches
- Parking on site
- Flexible, grown-up environment - small team, a lot of give
Senior Backend Engineer employer: Prism Digital
Join a dynamic and innovative team as a Senior Backend Engineer in North London, where you'll work directly with the founder of a profitable B2B SaaS platform. Enjoy a flexible, grown-up work environment that fosters creativity and collaboration, with opportunities for personal growth and influence over the engineering function. With competitive salary packages, share options, and a focus on employee well-being, this is an excellent opportunity for those looking to make a meaningful impact in a thriving company.
