Sr. .NET Developer

FSS Gov Solutions; Woodlawn (MD); On-site; USD 120,000 - 150,000; Full time

Job summary

FSS Gov Solutions is seeking a Senior .NET Developer to join our team supporting a new contract with a Federal agency. You will design, build, and evolve modern web applications using ASP.NET Core, gaining exposure to Azure and Azure OpenAI within the Microsoft AI ecosystem.

You will contribute to cloud-native architectures, RESTful services, and CI/CD processes while collaborating with cross-functional teams in an Agile setting.

Qualifications

• 5+ years of experience with C# and ASP.NET Core.

Responsibilities

• Design, develop, and maintain high-quality, scalable web applications using .NET 8 / ASP.NET Core.
• Architect and implement RESTful APIs and backend services with clean, maintainable code.
• Build and deploy cloud-native solutions on Microsoft Azure.
• Integrate and work with Azure AI services, including Azure OpenAI and Semantic Kernel.
• Collaborate with cross-functional teams to deliver features using Agile methodologies.
• Participate in DevOps practices, including CI/CD pipelines and Infrastructure as Code.
• Continuously improve application performance, security, and scalability.

Skills

C# & ASP.NET Core

REST API design

Software architecture (Clean/DDD)

SQL databases

Tools

Azure

Azure OpenAI

Docker

Terraform

Bicep

Front-end frameworks (Angular/React/Blazor)

Azure DevOps

Job description

We are looking for aSenior .NET Developerto join our growing team supporting brand new contract in partnership with Microsoft supporting new product development (both software/hardware) for a Federal agency.

You will play a key role in designing, building, and evolving modern, scalable applications usingASP.NET Corewhile gaining deep exposure toMicrosoft Azureand the latestMicrosoft AI technologies.

This is an excellent opportunity for a strong .NET professional who wants to expand their expertise into cloud-native development and Artificial Intelligence within the Microsoft ecosystem.

Key Responsibilities:

• Design, develop, and maintain high-quality, scalable web applications using.NET 8 / ASP.NET Core
• Architect and implement RESTful APIs and backend services with clean, maintainable code
• Build and deploy cloud-native solutions onMicrosoft Azure
• Integrate and work withAzure AI services, including Azure OpenAI, Azure AI Studio, and Semantic Kernel
• Collaborate with cross-functional teams to deliver new features using Agile methodologies
• Participate in DevOps practices, including CI/CD pipelines, automated testing, and Infrastructure as Code
• Continuously improve application performance, security, and scalability

What You’ll Gain Exposure To:

• Microsoft Azure Platform(App Services, Functions, Cosmos DB, Blob Storage, Container Apps, etc.)
• Microsoft AI Ecosystem(Azure OpenAI, Azure AI Services, Copilot Studio, and modern AI patterns)
• Modern cloud architecture and event-driven systems

Technical Requirements:

• Strong expertise inC#andASP.NET Core(minimum 5+ years preferred)
• Deep experience building REST APIs with .NET 6 / .NET 7 / .NET 8
• Solid understanding of clean architecture, Domain-Driven Design, and modern development patterns
• Strong SQL skills with relational databases (SQL Server or PostgreSQL)

Valued Experience:

• Hands‑on experience withAzurecloud services
• Exposure toAzure OpenAIor other AI/ML services
• Experience with front-end frameworks (Angular, React, or Blazor)
• Familiarity with Python or Node.js (a plus for AI-related tasks)
• Experience with Infrastructure as Code (Bicep or Terraform)
• Docker and containerization knowledge
• Azure DevOps and CI/CD pipelines

What We Offer You:

• Work on impactful projects combining.NET,Azure, andAI
• Structured learning path and hands‑on mentorship in Microsoft’s AI ecosystem
• Opportunity to work with cutting‑edge technologies in a supportive environment
• Career growth into Cloud Solution Architect or AI Engineer roles

Work Location: In person