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On-site
Washington DC-Baltimore Area
Posted · 27.09.2026
LinkedIn Jobs US

# Senior .NET Full Stack Developer

Haystack

We are working with a leading technology staffing and workforce solutions company that partners with Fortune 500 companies and government agencies to deliver agile and scalable talent solutions across various industries. This organization is committed to helping companies build high-performing teams while empowering professionals in their career growth. The Role Design and develop scalable web applications using React and .NET Core Build and maintain RESTful APIs and microservices Develop and optimize database solutions using SQL Server and Azure Cosmos DB Integrate AI/Agentic AI capabilities into enterprise applications Collaborate with cross-functional teams to deliver modern, cloud-native applications and AI-driven solutions Implement security, performance tuning, and best coding practices Participate in code reviews, mentoring, and technical leadership activities What You'll Need 7 to 9 years of software development experience with .NET Core / ASP.NET Core and C# Proficiency in React.js, JavaScript/TypeScript, and REST APIs Development Experience with Microservices Architecture, SQL Server, and Azure Cosmos DB Strong background in Microsoft Azure (App Services, Functions, Storage, Key Vault, etc.) and Azure DevOps / CI-CD Pipelines Experience with Agentic AI Development and AI Integration using LLMs, Azure OpenAI, or Copilot Frameworks Solid understanding of Git Version Control, Agile/Scrum Methodology, and Performance Optimization and Security Best Practices What's On Offer Comprehensive health, dental, and vision insurance 401(k) retirement plan and Health Savings Account (HSA) Disability, life, and AD&D insurance Opportunities for career growth and professional development Apply via Haystack today!

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