Senior Software Developer

Gallagher • San Diego, CA

5d

About The Position

We’re on the lookout for a Senior Software Developer to join our talented engineering team. In this role, you’ll work on cutting-edge systems that power healthcare insurance operations and electronic data interchange (EDI) solutions. From designing seamless integrations to leveraging AI tools for smarter development, you’ll play a key role in shaping the future of healthcare technology.

Requirements

• 7+ years of software development with C# and .NET Framework/.NET Core.
• Hands-on experience with healthcare EDI transactions (X12 standards like 837, 835, 270/271, etc.) and a solid understanding of HIPAA regulations.
• Proficiency in RESTful APIs, Microsoft tech stack (ASP.NET Core, SQL Server, Azure), and modern development tools (Git, CI/CD pipelines, containerization).
• Familiarity with AI-assisted development tools like GitHub Copilot, Claude Code, or similar platforms.
• Strong analytical skills and attention to detail in complex healthcare data environments.
• Excellent communication skills and the ability to work with both technical and non-technical stakeholders.

Nice To Haves

• Experience with cloud platforms (Azure preferred) and microservices architecture.
• Knowledge of healthcare interoperability standards like HL7 or FHIR.
• Familiarity with frontend frameworks (React, Angular, or Vue.js).
• Background in claims adjudication systems or medical billing operations.
• Certifications in Microsoft technologies or healthcare IT standards.

Responsibilities

• Develop and maintain systems for processing healthcare transactions like claims, eligibility verification, and remittance advice (think 835, 837, 270/271, 276/277 transactions).
• Build and enhance C#/.NET applications that support medical insurance operations and benefits administration.
• Design and implement RESTful APIs to connect with third-party healthcare systems, clearinghouses, and partner platforms.
• Lead the technical implementation of HIPAA-compliant EDI solutions, ensuring everything meets regulatory standards.
• Collaborate with business analysts, product owners, and healthcare teams to turn ideas into technical solutions.
• Troubleshoot and resolve complex issues related to EDI transactions, API integrations, and system performance.
• Use modern AI tools to boost productivity and code quality.
• Mentor and guide junior developers, sharing your expertise and best practices.
• Contribute to architecture decisions and help shape the technology strategy for our healthcare platform.

Benefits

• 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
• 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

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed
• Number of Employees: 501-1,000 employees