Senior Software Engineer – (C#/.NET & SQL -Required)(US CITIZENSHIP REQUIRED)

Index AR Solutions seeks a Senior Software Engineer to strengthen backend services built with C# and SQL Server. The role centers on developing APIs and data-driven solutions for both internal initiatives and client-facing greenfield projects, all within a hybrid work setup based in Williamsburg, Virginia. The compensation ranges from $100,000 to $120,000 per year, and the position requires US citizenship.

Responsibilities

• Collaborate with cross-functional teams to understand business goals, user needs, and product direction.
• Participate in Agile/Scrum ceremonies and contribute to incremental delivery and continuous improvement.
• Explain tradeoffs, ask insightful questions, and align implementation details with intended outcomes.
• Design, build, and maintain backend services and APIs using the .NET stack with emphasis on reliability, security, and performance.
• Design relational database schemas and implement performant queries and data access patterns using MS SQL Server.
• Apply clean coding standards, secure coding practices, and SOLID design principles in daily development.
• Develop modern web UI components as needed using React, Vite, Next.js, or similar frameworks.
• Collaborate across backend and frontend concerns (auth flows, API contracts, error handling, user experience implications) while focusing on backend delivery.
• Contribute to solution design using patterns such as microservices, domain-driven design, event-driven systems, and RESTful services, guided by senior technical leaders as needed.
• Participate in design reviews to ensure maintainability and alignment with team standards.
• Integrate applications with Identity & Access Management providers (Entra ID or Auth0).
• Assist integration with enterprise systems such as LMS, EAM, and HCM systems.
• Write and maintain unit, integration, and end-to-end tests to reduce regression risk.
• Develop proof-of-concepts to evaluate new tools and frameworks when appropriate.
• Build software with operational readiness in mind, including observability, resilience, and secure-by-default practices.
• Use Docker containers to simplify and standardize deployments.
• Apply infrastructure-as-code patterns (such as Bicep) to provision Azure resources like App Services, Azure SQL Databases, Storage Accounts, Function Apps, and Key Vaults.
• Leverage message brokers such as Azure Service Bus or RabbitMQ for event-driven workflows when appropriate.
• Adopt Git branching strategies appropriate to the project.
• Contribute to CI/CD pipelines in Azure DevOps, including practical quality gates (linting, static analysis, build/test automation).
• Utilize modern AI tools responsibly to accelerate development tasks while preserving code quality and security.
• Stay informed about AI developments that may improve engineering workflows.

Requirements

• Bachelor’s or Master’s degree in a related field.
• 7+ years of professional experience in software engineering using C# and modern cross-platform .NET.
• Strong analytical and problem-solving abilities, attention to detail, and clear written and verbal communication.
• Experience building and supporting back-end services (APIs) with data access and MS SQL Server.
• Working knowledge of modern front-end web development (React/Vite/Next.js or similar) to contribute when needed.
• Experience using AI tools thoughtfully within the software development lifecycle to improve productivity while maintaining quality and security.
• Azure: 5 years (Required) and .NET: 5 years (Required) as part of professional experience.
• Not open to recent graduates; requires 7+ years of experience.

Technologies

• C#, .NET, ASP.NET Core, MS SQL Server
• React, Vite, Next.js
• Docker, Bicep
• Azure App Services, Azure SQL Database, Azure Storage, Azure Functions, Azure Key Vault
• Azure Service Bus, RabbitMQ
• Entra ID, Auth0
• Git, Azure DevOps
• Unity, NoSQL databases
• Github Copilot, Claude Code, Cursor

Benefits

• 401(k) with 3% Safe Harbor contribution
• Health, Dental, Vision, and Telehealth
• Short-term, long-term disability and life insurance, 100% employer paid
• Pet Insurance
• Ten holidays, four weeks paid time off, and four weeks of paid parental leave

Experience

• Azure: 5 years (Required)
• .NET: 5 years (Required)

Education

• Bachelor's (Required)

Location and Working Arrangement

Base location is Williamsburg, VA, with a hybrid working arrangement after training. The role requires in-person presence initially and preferred commute to the Index office (23185) on a daily basis, with hybrid scheduling at managerial discretion following training.

Travel

Occasional travel, approximately 0–3 trips per year based on project needs.

Apply

If interested, please apply at indexarsolutions.com

Application Question

This job requires you to be a United States Citizen are you able to meet this requirement?