Senior Application Developer - Back End

Welcome to Gallagher - a global community of people who bring bold ideas, deep expertise, and a shared commitment to doing what’s right. We help clients navigate complexity with confidence by empowering businesses, communities, and individuals to thrive. At Gallagher, you’ll find more than a job; you’ll find a culture built on trust, driven by collaboration, and sustained by the belief that we’re better together. Whether you join us in a client-facing role or as part of our brokerage division, our benefits and HR consulting division, or our corporate team, you’ll have the opportunity to grow your career, make an impact, and be part of something bigger. Experience a workplace where you’re encouraged to be yourself, supported to succeed, and inspired to keep learning. That’s what it means to live The Gallagher Way.

• Design, develop, and maintain RESTful APIs using C#, .NET framework, and .NET Core.
• Utilize Azure technologies for cloud-based application development and deployment.
• Develop and optimize SQL Server databases, including writing complex queries and stored procedures.
• Apply OOP principles to design and implement scalable and maintainable software solutions.
• Implement front-end components using Angular to create responsive and user-friendly interfaces.
• Gather requirements, design solutions, and ensure successful project delivery.
• Create Web Services in C#.Net
• Develop reusable and extensible classes, namespaces, and event handler functions in all ASP.net web forms by breaking down the application functionality.
• Create the User controls to achieve the reusability of controls throughout the application.
• Pioneer migrations of ancient JS applications to modern Angular and close security issues.
• Manage source code using Git Repo/VSTS and follow best practices for version control.
• Conduct code reviews and write unit test cases to ensure adherence to coding standards and best practices and provide constructive feedback.
• Troubleshoot and resolve technical issues, ensuring high performance and reliability of applications.

Required Minimum Position Qualifications: Master’s degree in Computer and Information Technology, Computer Engineering, Computer Science, and Digital Sciences, or related field of study and 2 years of work experience in the job offered or any related occupation in which the required experience was gained.

Alternate Qualifications : Bachelor’s degree in Computer and Information Technology, Computer Engineering, Computer Science, and Digital Sciences, or related field of study and 5 years of work experience in the job offered or any related occupation in which the required experience was gained.

Position also requires demonstrated experience in the following:

• Azure technologies, including Azure App Services, Azure Functions, and Azure DevOps.
• T-SQL experience (MS SQL Server).
• SSL certificates.
• OAuth token Security
• SQL Server, including database design, query optimization, and performance tuning
• OOP concepts and design patterns
• ASP.NET
• .NET, C#, ASP.NET, .NET CORE, Windows OS, Code Security tools including Sonar Qube.
• Developing and Integrating Web APIs.
• Angular framework for building web applications.
• Certifications :
• Microsoft Certified: Azure Developer Associate
• Microsoft Certified: Azure Fundamentals

To Apply: To apply, email resume to Careers at Gallagher, View email address on jobs.ajg.com, OR submit a resume to OR submit a resume to Must reference Job Title & Job Code: 000445.

We offer a competitive and comprehensive compensation package. The base salary range represents the anticipated low end and high end of the range for this position. The actual compensation will be influenced by a wide range of factors including, but not limited to previous experience, education, pay market/geography, complexity or scope, specialized skill set, lines of business/practice area, supply/demand, and scheduled hours. On top of a competitive salary, great teams and exciting career opportunities, we also offer a wide range of benefits. 

Below are the minimum core benefits you’ll get, depending on your job level these benefits may improve:

• Medical/dental/vision plans, which start from day one!
• Life and accident insurance
• 401(K) and Roth options
• Tax-advantaged accounts (HSA, FSA)
• Educational expense reimbursement
• Paid parental leave

Other benefits include:

• Digital mental health services (Talkspace)
• Flexible work hours (availability varies by office and job function)
• Training programs
• Gallagher Thrive program – elevating your health through challenges, workshops and digital fitness programs for your overall wellbeing
• Charitable matching gift program
• And more...

**The benefits summary above applies to fulltime positions. If you are not applying for a fulltime position, details about benefits will be provided during the selection process.

We value inclusion and diversity

Click Here to review our U.S. Eligibility Requirements

Inclusion and diversity (I&D) is a core part of our business, and it’s embedded into the fabric of our organization. For more than 95 years, Gallagher has led with a commitment to sustainability and to support the communities where we live and work.

Gallagher embraces our employees’ diverse identities, experiences and talents, allowing us to better serve our clients and communities. We see inclusion as a conscious commitment and diversity as a vital strength. By embracing diversity in all its forms, we live out The Gallagher Way to its fullest.

Gallagher believes that all persons are entitled to equal employment opportunity and prohibits any form of discrimination by its managers, employees, vendors or customers based on race, color, religion, creed, gender (including pregnancy status), sexual orientation, gender identity (which includes transgender and other gender non-conforming individuals), gender expression, hair expression, marital status, parental status, age, national origin, ancestry, disability, medical condition, genetic information, veteran or military status, citizenship status, or any other characteristic protected (herein referred to as “protected characteristics”) by applicable federal, state, or local laws.

Equal employment opportunity will be extended in all aspects of the employer-employee relationship, including, but not limited to, recruitment, hiring, training, promotion, transfer, demotion, compensation, benefits, layoff, and termination. In addition, Gallagher will make reasonable accommodations to known physical or mental limitations of an otherwise qualified person with a disability, unless the accommodation would impose an undue hardship on the operation of our business.