Senior C# .Net Developer

Company: Advanced Resource Managers (A.R.M.)
Apply for the Senior C# .Net Developer
Location: London
Job Description:

Overview

In this role you will join a strategic technology transformation programme within a leading international bank to design, develop and modernise enterprise-grade applications across front-office to back-office domains. You will collaborate with architects, analysts and QA teams to deliver scalable, secure solutions in a regulated environment. You’ll work on RESTful APIs, microservices and cloud-enabled platforms, contributing to architecture and curating robust CI/CD practices. This is a hands-on, impact-driven position in a high-impact banking context.

Responsibilities

  • Design, develop and maintain enterprise applications using C# and .NET
  • Build scalable, secure APIs and distributed services
  • Translate requirements with stakeholders into technical solutions
  • Contribute to solution architecture and code reviews
  • Develop RESTful APIs and integration services
  • Implement monitoring, logging and error handling
  • Work with relational and non-relational databases
  • Create automated unit/integration/regression tests
  • Support CI/CD and DevOps practices
  • Troubleshoot production issues and perform root-cause analysis
  • Follow engineering, security and development standards
  • Participate in Agile delivery
  • Support application modernisation and cloud adoption

Key requirements

  • Strong commercial C#/.NET development experience
  • NET Core / .NET 6+
  • ASP.NET Core / Web API
  • REST APIs and microservices
  • SQL Server with complex queries and optimisation
  • Entity Framework / ORM
  • Object-oriented design and design patterns
  • Distributed systems and enterprise integration
  • Unit and automated testing
  • Azure DevOps, Git and CI/CD
  • Agile/Scrum delivery
  • Strong troubleshooting and problem-solving capability
  • Good stakeholder communication
  • stakeholder communication
  • problem-solving
  • team collaboration
  • Azure
  • Docker / Kubernetes
  • Kafka, RabbitMQ or Azure Service Bus

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Posted: October 17th, 2026