Senior Full Stack Developer

Company: Ronald James
Apply for the Senior Full Stack Developer
Location: Newcastle upon Tyne
Job Description:

Overview

As a Senior Full Stack Software Engineer, you will build secure, scalable applications for a business-critical financial environment. You will work across the full stack, shaping architecture and engineering standards while collaborating with cross-functional teams and stakeholders. You’ll influence technical decisions, implement robust code, and contribute to modern delivery practices in a cloud-enabled setting. This role offers impact across backend services and rich frontend interfaces, with a focus on reliability, performance and security. You’ll join an established financial services organisation that values hands-on delivery and cross-team collaboration.

Responsibilities

  • Design, develop and maintain applications using C# and .NET
  • Build modern user interfaces with React and TypeScript
  • Develop and integrate RESTful APIs and backend services
  • Work with Microsoft Azure to build, deploy and support cloud-based applications
  • Contribute to technical design and architectural decisions
  • Write clean, maintainable, and well-tested code
  • Contribute to CI/CD pipelines and modern software delivery practices

Key requirements

  • Experience across the full technology stack in a financial services or regulated environment is advantageous
  • Proficiency with C#, .NET / .NET Core
  • Experience with React and TypeScript
  • RESTful APIs development and integration
  • Azure cloud platform experience
  • SQL Server and Entity Framework Core familiarity
  • Strong focus on security, reliability and performance
  • collaboration with cross-functional teams
  • stakeholder communication
  • problem-solving orientation
  • C#
  • NET / .NET Core
  • RESTful APIs

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Posted: October 16th, 2026