Software Engineer

NET Developer

About the Opportunity

Our client regularly needs experienced developers to build and maintain large-scale, mission-critical applications on the Microsoft .NET stack. This posting is used to build a qualified candidate pipeline ahead of specific openings across multiple teams and contract vehicles.

Position Summary

The Senior .NET Developer will work alongside Systems Architects and cross-functional technical teams to design, develop, test, and implement large-scale web-based and enterprise applications supporting both internal staff and public-facing users. Candidates should be highly motivated, results-oriented, and comfortable owning technical decisions with minimal oversight, while communicating clearly with both technical and non-technical stakeholders.

Core Responsibilities

Development & Architecture

• Architect, design, develop, and implement large-scale web-based applications using C#.NET, VB.NET, ASP.NET, and MVC
• Perform software analysis, design, development, and testing across the full application lifecycle for client-server and n-tier applications
• Design and build secure, scalable integrations using REST APIs, web services, and Windows Communication Foundation (WCF)
• Contribute to data modeling and object modeling for enterprise systems
• Design and enhance user interfaces and user experience across web and mobile platforms

Collaboration & Documentation

• Work closely with Systems/Solution Architects and cross-sector teams including development, infrastructure, security, and network operations
• Produce and review technical documentation, architecture diagrams, and design specifications
• Communicate effectively with both technical teams and business stakeholders

Security, Quality & Governance

• Apply secure development practices, including claims-based authentication and identity/access management standards
• Use static code analysis tools (e.g., CheckMarx) to ensure code quality and security compliance
• Support governance, environment management, and compliance requirements for enterprise applications
• Follow CI/CD and application lifecycle management (ALM) best practices

Required Skills

• Extensive experience architecting and developing large-scale web and Windows-based applications using C#.NET, VB.NET, ASP.NET, and MVC
• Strong background in .NET Framework and/or modern .NET (6+), Entity Framework / EF Core, ADO.NET, and LINQ
• Proficiency with SQL Server (stored procedures, views, triggers) on recent versions
• Experience with JavaScript, AJAX, HTML, jQuery, CSS, and Bootstrap
• Experience with Web API and/or Windows Communication Foundation (WCF)
• Understanding of Object-Oriented Analysis and Design (OOA/OOD) and n-tier architecture
• Familiarity with Active Directory Federation Services (ADFS), claims-based authentication, and modern protocols (OIDC, WS-Fed)

Preferred Skills

• Experience with Blazor, WPF/XAML desktop applications, or rich client applications
• Reporting tools such as SSRS, Crystal Reports, or Power BI
• Microsoft Dynamics or SharePoint integration experience
• Microsoft certification(s)

General Minimum Qualifications

• Significant professional experience (typically 8+ years) in enterprise application development, with senior-level roles requiring more
• Strong written and verbal communication and documentation skills
• Proven ability to work independently and collaboratively across cross-functional teams
• Eagerness to learn, adapt, and implement new tools and technologies

Preferred Overall Qualifications

• Prior experience with government or public sector clients
• Experience working within a formal SDLC or client-defined development methodology
• Relevant Microsoft technical certifications

EEO Statement:

Brooksource is an equal opportunity employer that does not discriminate on the

basis of actual or perceived race, color, creed, religion, national origin, ancestry,

citizenship status, age, sex or gender (including pregnancy, childbirth, lactation

and related medical conditions), gender identity or gender expression, sexual

orientation, marital status, military service and veteran status, physical or mental

disability, protected medical condition as defined by applicable state or local law,

genetic information, or any other characteristic protected by applicable federal,

state, or local laws and ordinances.