First seen by Alion on Nov 4, 2026.
Senior-Level PositionJob Title: Senior .NET Developer
Experience: 11+ Years
Employment Type: Contract W2 only
Job Summary
We are looking for a highly experienced Senior .NET Developer with 11+ years of hands-on experience in designing, developing, and maintaining enterprise-level applications using Microsoft .NET technologies. The ideal candidate should have strong expertise in C#, ASP.NET Core, Web API, SQL Server, and modern front-end technologies. The candidate will be responsible for leading technical development, designing scalable applications, implementing microservices architectures, and ensuring high-quality software delivery.
Key Responsibilities
Design, develop, test, and maintain scalable enterprise applications using C#, .NET Core, and ASP.NET Core.
Develop RESTful APIs and microservices using ASP.NET Core Web API.
Build responsive and user-friendly web applications using Angular, React, JavaScript, HTML5, and CSS3.
Design and optimize relational databases using Microsoft SQL Server, including stored procedures, functions, triggers, and complex queries.
Implement application security using OAuth 2.0, JWT, and role-based access control.
Develop and integrate cloud-based solutions using Microsoft Azure services.
Work with Azure Functions, Azure App Services, Azure Service Bus, and Azure Storage.
Implement CI/CD pipelines using Azure DevOps, GitHub Actions, or Jenkins.
Apply design patterns, SOLID principles, clean architecture, and object-oriented programming concepts.
Perform code reviews, debugging, performance tuning, and application optimization.
Collaborate with architects, business analysts, QA engineers, and cross-functional development teams.
Mentor junior developers and provide technical guidance to the development team.
Participate in requirement analysis, technical design, sprint planning, and Agile/Scrum ceremonies.
Ensure coding standards, security practices, and software development best practices are followed.
Required Technical Skills
Skill
Required Expertise
Programming
C#, OOP, LINQ, Multithreading
.NET Technologies
.NET Framework, .NET Core, .NET 6/7/8
Web Development
ASP.NET MVC, ASP.NET Core
API Development
RESTful APIs, Web API, Microservices
Front-End
Angular / React, JavaScript, TypeScript
Database
SQL Server, T-SQL, Stored Procedures
ORM
Entity Framework, Entity Framework Core, Dapper
Cloud
Microsoft Azure
Azure Services
App Services, Functions, Service Bus, Azure Storage
DevOps
Azure DevOps, CI/CD, GitHub Actions
Security
OAuth 2.0, JWT, Authentication, Authorization
Architecture
Microservices, SOLID, Design Patterns, Clean Architecture
Methodology
Agile, Scrum, SDLC
Preferred / Good-to-Have Skills
Experience with Azure Kubernetes Service (AKS) and Docker.
Knowledge of containerization and orchestration technologies.
Experience with Redis caching and distributed caching.
Knowledge of message brokers such as RabbitMQ or Kafka.
Experience with unit testing frameworks such as NUnit, xUnit, or MSTest.
Familiarity with automated testing and code quality tools such as SonarQube.
Exposure to AI-assisted development tools such as GitHub Copilot.
Experience with application monitoring using Azure Application Insights and Grafana.
Required Qualifications
Bachelor's or Master's degree in Computer Science, Information Technology, or a related field.
11+ years of professional experience in software development using Microsoft .NET technologies.
Strong experience in developing enterprise-grade web applications and distributed systems.
Proven experience in technical design, application architecture, and end-to-end development.
Strong analytical, problem-solving, communication, and leadership skills.
Ability to work independently and collaborate effectively with distributed teams.

