Senior Application Developer

Arthur J. Gallagher & Co. (AJG); Rolling Meadows (IL); On-site; USD 120,000 - 160,000; Full time

Job summary

Gallagher is seeking a software engineering professional to design, develop, and deploy software systems across middleware, legacy, and cloud environments. You will work with architects, product managers, and end users to deliver reliable applications.

The role emphasizes collaboration, problem solving, and continuous improvement in a fast-paced, people-first culture with global reach and local impact.

Qualifications

• Typically requires a University Degree and minimum 5 years of prior relevant experience, or equivalent experience.
• Experience in app development and database design is preferred.
• Strong communication and stakeholder management skills.
• Ability to design and integrate software systems.
• Experience with cloud-based or enterprise systems.

Responsibilities

• Managing products, systems and/or projects/processes, and working independently with limited supervision.
• Facing IT function related problems that are sometimes difficult and moderately complex.
• Coaching and reviewing the work of lower-level professionals.

Skills

App development

Programming

Database design

System architecture

System integration

Communication skills

Stakeholder management

Root cause analysis

Product development management

Product portfolio management

Job description

Introduction

At Gallagher Bassett, we're there when it matters most because helping people through challenging moments is more than just our job, it’s our purpose. Every day, we help clients navigate complexity, support recovery, and deliver outcomes that make a real difference in people’s lives. It takes empathy, precision, and a strong sense of partnership—and that’s exactly what you’ll find here. We’re a team of fast-paced fixers, empathetic experts, and outcomes drivers — people who care deeply about doing the right thing and doing it well. Whether you're managing claims, supporting clients, or improving processes, you’ll play a vital role in helping businesses and individuals move forward with confidence. Here, you’ll be supported by a culture that values teamwork, encourages curiosity, and celebrates the impact of your work. Because when you’re here, you’re part of something bigger. You’re part of a team that shows up, stands together, and leads with purpose.

How you’ll make an impact

Specializes in planning, designing, and developing software systems (e.g., middleware, legacy, mainframe) and applications from concept phase to series production used in local, networked, cloud based or internet related computer programs.Developers design, code, test, debug, and document program requirements, working with architects, product managers, and end-users in the development and enhancement of applications.Plans, designs, and develops software systems from concept phase to production in local networks or cloud based related computer programsCodes in relevant languages CAREER: Applies advanced knowledge of sub-function typically obtained through advanced education and work experience.Responsibilities may include:

• Managing products, systems and/or projects/processes, and working independently with limited supervision.
• Facing IT function related problems that are sometimes difficult and moderately complex.
• Coaching and reviewing the work of lower-level professionals.

About You

Required:

• Typically requires a University Degree and minimum 5 years of prior relevant experience, or equivalent experience.

Preferred:

• App development/programming
• Database design
• System architecture & integration
• Communication and stakeholder management skills
• Root cause analysis
• Product development management
• Product portfolio management

Compensation and benefits

At Gallagher, we believe supporting our colleagues goes far beyond the role itself. For more information, visit our Benefits page.

• Competitive compensation
• Comprehensive benefits programs designed to support your well-being
• Career development opportunities and ongoing learning
• A collaborative, people-first culture with accessible leadership
• The opportunity to do meaningful work with global reach and local impact

At Gallagher, we are dedicated to building an inclusive and authentic workplace. If your past experience doesn’t align perfectly, we encourage you to join our Talent Community to stay connected to additional career opportunities. At times, we will consider transferable skills from previous roles.

Gallagher is an affirmative action/equal opportunity employer (Minorities/Females/Veterans/Disabled)