Senior .NET Developer

At JobSiteCare a division of WorldClinic, we’re redefining workplace health by bringing physician-led telemedicine directly to jobsites. Our 24/7 nationwide coverage ensures that when an injury happens, workers receive immediate, expert care from board-certified physicians—minimizing downtime, reducing claim costs, and improving OSHA outcomes. Just as we care deeply for the workers we serve, we also value and invest in our own team. At JobSiteCare, you’ll find a supportive, mission-driven culture that recognizes contributions, encourages growth, and empowers employees to do meaningful work that keeps America’s workforce safe, supported, and thriving. Overview: The Senior .NET Developer will help to lead the design, development, and optimization of mission-critical applications across our cloud and client platforms. This role will collaborate closely with product owners, architects, and cross-functional teams to deliver high-quality, modern software that supports our organization’s growth and enhances the user experience. This role will work with modern cloud-native technologies in a high impact environment, collaborative team culture with strong engineering values, and professional development mentoring. Primary Duties: Legacy Migration & Modernization • Migrate and re-platform the JobSiteCare system off Salesforce into a modern C#/.NET / React Vite architecture ahead of contractual deadlines. • Rapidly ramp on and interpret an existing (legacy) codebase, replicating proven functionality rather than rebuilding from scratch where appropriate. Application Development & Architecture • Design, develop, and maintain enterprise-grade applications using C#/.NET 10+, including backend APIs and shared libraries. • Build cross-platform client applications using .NET MAUI for mobile and desktop environments. • Develop high-performance web front-ends using React.js and modern JavaScript/TypeScript tooling. • Implement cloud-native application architectures leveraging Azure PaaS offerings such as Azure App Service, Functions, Service Bus, Key Vault, API Management, Logic Apps, and Storage. • Design scalable and resilient microservices or modular monolithic architectures, depending on project needs. Database Engineering • Design and optimize relational schemas in Azure SQL Database. • Implement stored procedures, indexing strategies, and performance tuning to ensure highly available, performant data access layers. • Work with data architects to ensure data integrity, security, and compliance. DevOps & Cloud Operations • Collaborate with DevOps engineers to define CI/CD pipelines (Azure DevOps or GitHub Actions) for automated builds, tests, and deployments. • Participate in environment configuration, infrastructure-as-code (ARM/Bicep/Terraform), and application monitoring using Azure Monitor, Application Insights, and Log Analytics. • Troubleshoot production issues and lead root-cause analysis efforts. AI-Assisted Development • Work effectively alongside AI coding tools and agentic development workflows (e.g., Claude Code) to accelerate delivery while maintaining code quality and security. • Ensure all AI-assisted work is performed within Company-approved accounts and tooling to preserve code history, usage governance, and data security. Leadership & Collaboration • Mentor junior and mid-level developers to elevate team technical capabilities. • Participate in sprint planning, code reviews, architectural discussions, and system documentation. • Partner with QA to ensure testability, automation coverage, and overall product quality. • Collaborate with UX/UI teams to deliver intuitive and responsive cross-platform user experiences. Required Qualifications: • 10+ years professional experience in software development with C# and .NET. • Demonstrated experience migrating or modernizing legacy systems and rapidly ramping on an existing codebase under deadline pressure. • Strong experience with Azure PaaS services, including at least several of: Azure App Service, Azure Functions, Event Grid, Service Bus, Storage, API Management, Key Vault, and Logic Apps. • Hands-on expertise with Azure SQL, including schema design, performance tuning, and querying. • Production experience building cross-platform apps using .NET MAUI (or Xamarin.Forms with migration experience). • Strong proficiency with React Vite, React.js, modern JavaScript/TypeScript, and front-end build tooling (Webpack, npm/Yarn, etc.). • Experience building and consuming RESTful APIs and integrating with authentication/authorization systems (e.g., Azure AD, B2C, OAuth2). • Solid understanding of cloud-native best practices, distributed systems, and application performance patterns. • Experience in Agile/Scrum environments with modern DevOps workflows. • Working knowledge of HIPAA and PHI-handling requirements in a healthcare software environment. Preferred Qualifications: • Familiarity with NoSQL solutions (Cosmos DB, Table Storage, Blob Storage). • Experience with message-driven architectures or event-based systems. • Prior work with automated testing frameworks (xUnit, Jest, Playwright, etc.). • Knowledge of security best practices for cloud applications (OWASP, zero-trust, secret management). • Knowledge of healthcare security best practices for cloud applications (HIPAA, FHIR, HL7) is a plus. • Knowledge of OAuth frameworks and experience with Auth0 as single sign on provider • Exposure to Blazor or other .NET UI frameworks is a plus. Skills: • Excellent communication and technical documentation skills. • Strong analytical thinking and problem-solving abilities. • Ability to work independently while collaborating effectively within cross-functional teams. • A commitment to code quality, maintainability, and continuous improvement. Physical and General Requirements: • Able to sit for several hours at a time with periodic breaks • Ability to use fine motor skills to operate computers, office equipment and/or machinery • Visual acuity to perform an activity such as: preparing and analyzing data and figures; transcribing; viewing a computer monitor; extensive reading. • Work is performed in an indoor office setting • Work hours are aligned to the Eastern Time Zone • Due to security reasons this position must be based and work performed in the U.S EEO Disclaimer: We are an Equal Opportunity Employer, are committed to creating a diverse and inclusive company culture, and we do not discriminate against candidates or employees because of their disability, sex, race, gender identity, sexual orientation, religion, national origin, age, veteran status, or any other protected status under federal or state laws.