Lead .NET Full-Stack Engineer | Azure & Security

Arthur J. Gallagher & Co. (AJG); United Kingdom; On-site; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Competitive pay

Benefits package

Career development

People-first culture

Global reach

Job summary

Gallagher seeks an experienced .NET developer to design, build, and maintain custom applications on the .NET Framework and .NET Core. You will research new technologies, conduct proof-of-concepts, and work with project owners to deliver scalable solutions.

You'll apply strong C# skills, ASP.NET MVC, and full-stack capabilities across frontend and backend, with emphasis on security and SDLC adherence. Knowledge of Azure services and SQL Server is valued.

Qualifications

• Design, develop, and test custom applications on the .NET Framework and .NET Core.
• Code and test application integrations and services.
• Collaborate with team and project owners to deliver solutions.
• Adhere to IT policies, security standards, and SDLC processes.

Responsibilities

• Design, develop, and test custom applications on the .NET Platform.
• Research emerging technologies and conduct PoCs.
• Collaborate with team and project owners to implement plans.
• Ensure data protection per IT policy and priorities.
• Create documentation of designs and code.
• Comply with IT policies and professional standards.

Skills

NET Framework

NET Core

C#

ASP.NET MVC

Full stack development

Angular/React

JavaScript/jQuery/CSS3/Bootstrap

SQL Server

WCF/Web API/Console Apps

Azure Cloud Services

Architecture/Design patterns

SDLC

Application security (SDL/OWASP)

Troubleshooting

Insurance industry knowledge

Education

University Degree and minimum 5 years of prior relevant experience, or equivalent experience

Tools

Azure Cloud Services

SQL Server

Job description

Gallagher seeks an experienced .NET developer to design, build, and maintain custom applications on the .NET Framework and .NET Core. You will research new technologies, conduct proof-of-concepts, and work with project owners to deliver scalable solutions.

You'll apply strong C# skills, ASP.NET MVC, and full-stack capabilities across frontend and backend, with emphasis on security and SDLC adherence. Knowledge of Azure services and SQL Server is valued.