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Senior Net Developer Jobs in Mount Rainier, MD (NOW HIRING)

Powersolv

Sr. NET Developer /AI Developer

Rockville, MD · On-site

$56 - $71.25/hr

The Client is seeking a Senior .Net Developer with strong cloud experience to design, build, modernize and support modern applications in Microsoft Azure. * The ideal candidate is proficient in .Net ...

Techflairs Inc

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Sr.Net Developer with Angular

Washington, DC · On-site

$45 - $50/hr

Write clean, well-tested, and reusable code following engineering best practices. * Develop and execute unit tests and support automated testing initiatives. * Participate in code reviews. * Support ...

Twenty First Systems

SR .NET DEVELOPER

Bethesda, MD · On-site

$58.75 - $75/hr

NET Developer is a member of the project team who takes responsibility for implementing parts of the system architecture using best practices in an agile development environment This will include ...

Twenty First Systems

SR .NET DEVELOPER

Bethesda, MD · On-site

$58.75 - $75/hr

NET Developer is a member of the project team who takes responsibility for implementing parts of the system architecture using best practices in an agile development environment. This will include ...

Annexa Inc.

Senior .Net Developer

Washington, DC · On-site

$62.25 - $79.25/hr

Senior .NET Developer Employment Type: Onsite Annexa is currently supporting D.C. Government ... NET. * 11+ years of experience with database technologies, development methodologies, and ...

Network Designs Inc.

Senior .Net Developer

Alexandria, VA · On-site

$135K - $160K/yr

The Senior .NET Developer will also contribute to application architecture, technical design, code ... NET.Develop scalable, maintainable, and reusable application components that support complex ...

kgs

Senior .Net Full-Stack Developer

Washington, DC · On-site

Kadiak, LLC, a Koniag Government Services company, is seeking a Senior Net Full-Stack Developer with a Top-Secret security clearance to support Kadiak and our government customer in Washington, DC.

kgs

Senior .Net Full-Stack Developer

Washington, DC · On-site

Kadiak, LLC, a Koniag Government Services company, is seeking a Senior Net Full-Stack Developer with a Top-Secret security clearance to support Kadiak and our government customer in Washington, DC.

Mobomo, LLC

Senior .NET Developer

Washington, DC · On-site

$60.75 - $77.50/hr

We are seeking a full-time, backend-focused Senior .NET Developer to support application modernization initiatives and ongoing maintenance of legacy systems. This role requires a hands-on engineer ...

USM

.Net Developer

Reston, VA · On-site

$50.25 - $66.25/hr

The Sr Software Engineer, reporting to our Sr Director of Client Implementation, in our Client Tech Implementation team, will play a critical role in building Desktop & mobile based web applications.

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Senior Net Developer information

See Mount Rainier, MD salary details

$36

$60

$79

How much do senior net developer jobs pay per hour?

As of Aug 10, 2026, the average hourly pay for senior net developer in Mount Rainier, MD is $60.78, according to ZipRecruiter salary data. Most workers in this role earn between $53.41 and $67.93 per hour, depending on experience, location, and employer.

How much does a senior .NET developer make?

A senior .NET developer typically earns between $90,000 and $130,000 annually, depending on experience, location, and industry. They often have expertise in C#, ASP.NET, and related frameworks, and may hold certifications that can influence salary levels.

Are senior .NET developers still in demand?

Senior .NET developers remain in demand due to ongoing needs for enterprise application development, cloud integration, and modernization projects. Proficiency in C#, ASP.NET, and related frameworks, along with experience in cloud platforms like Azure, enhances job prospects in this field.

What is the difference between Senior Net Developer vs .NET Developer?

AspectSenior Net Developer.NET Developer
Required Experience5+ years, leadership skills1-3 years, foundational skills
CertificationsMicrosoft Certified: Azure Developer Associate or similarOptional, but beneficial
Work EnvironmentLead projects, mentor juniors, design architectureDevelop applications, write code, troubleshoot
ResponsibilitiesArchitect solutions, oversee team, optimize performanceBuild and maintain .NET applications, implement features

The main difference between a Senior Net Developer and a .NET Developer lies in experience, responsibilities, and leadership. Senior Net Developers typically have more years of experience, hold advanced certifications, and take on leadership roles in project design and team mentoring. In contrast, .NET Developers focus on coding and application development with less emphasis on leadership or architecture. Both roles are essential in the software development lifecycle, but the senior position involves broader strategic responsibilities.

What cities near Mount Rainier, MD are hiring for Senior Net Developer jobs? Cities near Mount Rainier, MD with the most Senior Net Developer job openings:
Senior Net Developer jobs near you
Infographic showing various Senior Net Developer job openings in Mount Rainier, MD as of August 2026, with employment types broken down into 2% As Needed, 85% Full Time, 9% Part Time, and 4% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $126,421 per year, or $60.8 per hour.

Sr. NET Developer / AI Developer / Power BI

System One

Rockville, MD • On-site

$56 - $71.25/hr

Contractor

Medical, Dental, Vision, Life, Retirement

Posted 18 days ago

Job description

Job Title: Sr. NET Developer / AI Developer / Power BI Location: MUST BE LOCAL TO MD, VA or DC Type: Contract Compensation: Negotiable, W-2 or C2C Work Model: Hybrid Hours: 35 work hours a week All residency status may apply

Responsibilities

  • Design, build, modernize, and support modern applications in Microsoft Azure
  • Develop and implement cloud-native architectures utilizing .NET Core/.NET 8, C#, and Azure services such as App Services, Functions, API Management, Service Bus, Azure SQL, Azure OpenAI, and AI Foundry.
  • Modernize legacy .NET applications and integrate AI-powered solutions, including Azure AI Foundry, Azure OpenAI, AI agents, Retrieval-Augmented Generation (RAG), and prompt engineering.
  • Utilize GitHub Copilot, GitHub, Azure DevOps, CI/CD pipelines, and containerization tools to streamline development processes.
  • Work with SQL, Cosmos DB, and modern UI frameworks like Blazor, React, or Angular to develop user interfaces and manage data efficiently.
  • Evaluate data, identify trends, conduct feasibility studies, perform gap analyses, and provide actionable insights.
  • Communicate complex ideas clearly to diverse audiences and collaborate effectively with stakeholders, project teams, and leadership.
Requirements
  • Proficiency in C#, ASP.NET Core, and cloud-native development.
  • Strong experience with Azure services, microservices, API security, and Microsoft Entra ID/B2C authentication.
  • Experience modernizing .NET Framework/Web Forms applications to .NET 8 or cloud-native architectures.
  • Hands-on experience with Azure AI Foundry, Azure OpenAI, AI agents, RAG, prompt engineering, and GitHub Copilot.
  • Proficient with GitHub or Azure DevOps, CI/CD pipelines, and containerization.
  • Solid understanding of SQL, Cosmos DB, and modern UI frameworks such as Blazor, React, or Angular.
  • Excellent analytical, problem-solving, communication, and interpersonal skills.
  • Self-motivated, organized, detail-oriented, and able to manage multiple priorities in a fast-paced environment.

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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Ref: #851-Rockville-S1