Header
We are hiring

Hire Intelligence

14 Hanover Square
London,
W1S 1HN, England

Senior .NET Developer (C#, .NET Core, SQL Server, APIs)

£(Not specified)
Full time
London,

Overview

We are looking for an experienced Senior .NET Developer to join our team and play a key role in designing, building, and maintaining scalable, high-performance applications. You will work across the full development lifecycle, contributing to architecture decisions, backend development, and system integrations.

This role requires strong expertise in C#, .NET Core, and Microsoft SQL Server, along with solid experience building and consuming APIs.


Key Responsibilities

  • Design, develop, and maintain robust applications using C# and .NET Core
  • Build and integrate RESTful APIs and third-party services
  • Develop and optimise SQL Server databases, queries, and stored procedures
  • Collaborate with product owners, designers, and other developers to deliver high-quality solutions
  • Lead technical design discussions and contribute to system architecture
  • Identify performance bottlenecks and implement improvements
  • Ensure code quality through reviews, testing, and best practices
  • Mentor junior developers and provide technical guidance
  • Participate in deployment, monitoring, and ongoing support of applications


Required Skills & Experience

  • Strong commercial experience with C# and .NET Core / .NET 6+
  • Extensive experience with Microsoft SQL Server (query optimisation, indexing, stored procedures)
  • Proven experience designing and consuming RESTful APIs
  • Solid understanding of software architecture and design patterns
  • Experience with version control systems (e.g. Git)
  • Familiarity with CI/CD pipelines and DevOps practices
  • Strong problem-solving skills and attention to detail


Desirable Skills

  • Familiarity with frontend frameworks (e.g. React, Angular)
  • Experience with message queues or event-driven systems


Personal Attributes

  • Strong communication and collaboration skills
  • Ability to work independently and as part of a team
  • Proactive mindset with a focus on continuous improvement
  • Comfortable working in a fast-paced environment


What We Offer

  • Competitive salary and benefits
  • Flexible / remote working options
  • Opportunity to work on modern technologies and scalable systems
  • Career progression and professional development support


Why Work Here

Bring your passion and develop your career with us. In return, you’ll be part of a supportive team and enjoy plenty of opportunities to develop a career you’re truly proud of. We like to show our employees just how appreciated they are with a range of rewards and benefits. Apply to one of our open roles or leave your CV using the form below.

Can’t find a suitable job but want to work for us?
Want to stay updated on new jobs?
Header