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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Developer - **Company:** Gallagher Llp - **Location:** San Diego, CA, United States - **Experience:** Expert - **Salary:** $84,500.0 - $165,000.0 - **Contract:** Permanent contract - **Skills:** ASP.NET, JavaScript (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Artificial Intelligence, Application Performance Management, Microsoft Azure, Health Informatics, C Sharp (Programming Language), Cloud Computing, Cloud Engineering, Software Quality, Continuous Integration, Cursor, Programming Tools, Electronic Data Interchange (EDI), UN Electronic Data Interchange for Administration Commerce and Transport, Entity Framework, Monitoring of Systems, Interoperability, Microsoft Visual Studio, Microsoft Software, Microsoft SQL Server, SQL Azure, Nunit, OAuth, Performance Tuning, Windows PowerShell, Scrum Methodology, Systems Development Life Cycle, Queueing Systems, RabbitMQ, Redis, Microsoft Copilot, Swagger, JSON Web Token, Software Engineering, SQL Databases, Systems Integration, TypeScript, Web Application Frameworks, Openapi, Azure Service Bus, Datadog, Test-Driven Development (TDD), .NET Core, GitHub Copilot, ReactJS, Fast Healthcare Interoperability Resources, Claude Code, Grafana, Git, Xunit, Moq, Vue.js, Containerization, AngularJS, Health Level Seven International, Google Gemini, Restful APIs, Docker, Key Vault, Web Api, Microservices - **Published:** October 22, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=52e72028a82eb505 ## About the Role * 7+ years of software development experience with C# and .NET Framework/.NET Core * Experience with AI-assisted development tools such as Claude Code, GitHub Copilot, Cursor, or similar platforms * Strong experience designing and implementing RESTful APIs and third-party system integrations * Proficiency with modern development tools and practices including Git, CI/CD pipelines, containerization, and cloud-native architectures * 3+ years of hands-on experience with healthcare EDI transactions (X12 standards: 837, 835, 270/271, 276/277, 834) * Strong proficiency in the Microsoft technology stack: ASP.NET Core, SQL Server, Azure services * Deep understanding of HIPAA regulations and healthcare data security requirements * Proven experience with full Software Development Life Cycle (SDLC) methodologies including Agile/Scrum * Demonstrated ability to manage stakeholder expectations and communicate technical concepts to non-technical audiences * Experience with EDI translation software and healthcare clearinghouse integrations * Strong problem-solving skills and attention to detail in complex healthcare data environments * Excellent written and verbal communication skills, * Hands-on experience with Claude Code, Gemini, Copilot, Cursor, or other AI development assistants * Experience with On-Prem and cloud platforms (Azure preferred) and microservices architecture * Knowledge of HL7, FHIR, or other healthcare interoperability standards * Experience with message queuing systems (Azure Service Bus, RabbitMQ) * Proficiency with modern frontend frameworks (React, Angular, or Vue.js) * Familiarity with claims adjudication systems, benefits administration platforms, and insurance carrier operations * Experience with automated testing frameworks (xUnit, NUnit, Moq) and test-driven development * Background in healthcare payer systems or medical billing operations * Understanding of VEBA (Voluntary Employees' Beneficiary Association) plans and benefits administration * Experience with monitoring and observability tools (Application Insights, Datadog, Grafana) * Certifications in Microsoft technologies or healthcare IT standards Technical Environment * Languages: C#, SQL, PowerShell, JavaScript/TypeScript * Frameworks: .NET 6+, ASP.NET Core Web API, Entity Framework Core * Databases: SQL Server, Azure SQL, Redis * Tools: Visual Studio, Visual Studio Code, Azure DevOps, Git, Docker * Cloud: Microsoft Azure (App Services, Functions, Service Bus, Storage, Key Vault) * EDI: X12 transaction sets, EDI translation engines * AI Tools: Claude Code, GitHub Copilot, and other AI-assisted development platforms * API: REST, OpenAPI/Swagger, OAuth 2.0, JWT authentication ## Description * Design, develop, and maintain EDI transaction processing systems for healthcare claims, eligibility verification, and remittance advice (835, 837, 270/271, 276/277 transactions) * Build and enhance C#/.NET applications supporting medical insurance carrier operations and benefits administration * Design and implement RESTful API integrations with third-party healthcare systems, clearinghouses, pharmacy benefit managers, and partner platforms * Lead technical implementation of HIPAA-compliant EDI solutions and ensure regulatory adherence * Collaborate with business analysts, product owners, and healthcare operations teams to translate requirements into technical solutions * Manage stakeholder relationships across IT, claims operations, provider networks, compliance, client services, and external integration partners * Participate in full SDLC activities including requirements gathering, design, development, testing, deployment, and maintenance * Leverage modern AI development tools to enhance productivity and code quality * Provide technical leadership and mentorship to development team members * Troubleshoot and resolve complex EDI transaction issues, API integration challenges, and system connectivity problems * Optimize system performance and implement best practices for scalability and reliability * Contribute to architecture decisions and technology strategy for our healthcare platform