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Senior Back End Engineer

2 weeks ago

London Area, United Kingdom ST Global Tech LLC Full time £86,400 - £144,000 per year

Senior Back End Engineer (.NET/Azure)

Location: Central London, UK

Duration: 6 Months Contract

Rate: 360 GBP/Day inside IR35

Client is seeking a Senior Back End Engineer to help deliver our
Private Client Lending Origination Platform (IMPACT),
a modern, workflow-driven platform supporting the full private client mortgage journey.

We're looking for an experienced engineer who combines deep .NET and Azure expertise with a collaborative, pragmatic mindset. You'll design and implement the backend services, APIs, and integrations that power our lending ecosystem, while working closely with front-end, product, and infrastructure teams.

This is a role for someone who enjoys solving complex technical problems within a supportive engineering culture — bringing experience others can learn from, while being open to Client's ways of working and shared engineering principles. You'll be part of a team where architectural thinking, reliability, and craftsmanship are valued just as much as delivery speed.

Core skills include:

  • 5–8 years' experience building backend systems using
    .NET Core / .NET 6/8+
    and
    C#.
  • Strong experience with A
    zure, including Container Apps, Functions, Service Bus, Networking
    and
    API Management.
  • Proven ability to build secure, scalable, and maintainable
    APIs
    and
    integrations.
  • Familiarity with CI/CD pipelines and DevOps workflows in
    Azure DevOps
    or similar.
  • Experience implementing authentication, authorization, and secure data exchange patterns.
  • Competence with SQL Server — schema design, query tuning, and data optimization.

Other beneficial attributes include:

  • Exposure to
    Infrastructure as Code (Terraform or Bicep).
  • Understanding of event-driven or microservice architectures.
  • Familiarity with monitoring, logging, and resilience engineering in Azure.
  • Experience in financial services or other regulated domains.
  • Experience collaborating with front-end and QA engineers.