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Senior Net Developer Jobs in Frederick, MD (NOW HIRING)

System One

Be Seen First

.NET / Power BI Developer

Rockville, MD · On-site

$56 - $69.50/hr

Job Title: Sr. NET Developer / AI Developer Location: Rockville, MD Type: Contract Compensation: Negotiable, W-2 or C2C Hours: NOTE, 35 hour work week All residency status may apply MUST BE CURRENTLY ...

New

eTelligent Group LLC

Senior .NET Developer

Rockville, MD · Hybrid

$56 - $71.25/hr

We are 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 Core/.NET ...

New

eTelligent Group LLC

Senior .NET Developer

Rockville, MD · Hybrid

$56 - $71.25/hr

We are 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 Core/.NET ...

New

Compugain

Sr SDET

Rockville, MD · On-site

$112K - $146K/yr

NET. * 1+ years of experience in Selenium WebDriver or comparable UI automation framework is ... Experience with functional or Performance or Security or DevOps test tools. * Demonstrable ...

Compugain

Sr SDET

Rockville, MD · On-site

$112K - $146K/yr

NET. * 1+ years of experience in Selenium WebDriver or comparable UI automation framework is ... Experience with functional or Performance or Security or DevOps test tools. * Demonstrable ...

All JobsNet Developer JobsSenior Net Developer JobsSenior Net Developer Jobs in Frederick, MD

Senior Net Developer information

See Frederick, MD salary details

$36

$59

$77

How much do senior net developer jobs pay per hour?

As of Jul 25, 2026, the average hourly pay for senior net developer in Frederick, MD is $59.86, according to ZipRecruiter salary data. Most workers in this role earn between $52.60 and $66.92 per hour, depending on experience, location, and employer.

What is a Senior .NET Developer?

A Senior .NET Developer is an experienced software engineer who specializes in building, maintaining, and optimizing applications using Microsoft’s .NET framework. They are responsible for designing robust and scalable solutions, leading development teams, and ensuring best coding practices. Senior .NET Developers typically work with technologies such as C#, ASP.NET, SQL Server, and may also be involved in architectural decisions, mentoring junior developers, and collaborating with stakeholders to deliver high-quality software products.

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 are the key skills and qualifications needed to thrive as a Senior .NET Developer, and why are they important?

To thrive as a Senior .NET Developer, you need advanced proficiency in C#, ASP.NET, and object-oriented programming, typically supported by a bachelor's degree in computer science or related field. Experience with tools like Visual Studio, SQL Server, and version control systems such as Git, along with relevant Microsoft certifications (e.g., MCSD), is highly valued. Strong problem-solving, leadership, and communication skills help you collaborate effectively and mentor junior developers. These competencies ensure robust, maintainable software solutions and contribute to successful project delivery in complex development environments.

How does a Senior .NET Developer typically collaborate with cross-functional teams during the software development lifecycle?

As a Senior .NET Developer, you will often work closely with product managers, UI/UX designers, QA engineers, and other developers to deliver robust software solutions. Collaboration usually involves participating in requirement-gathering sessions, contributing to architectural decisions, conducting code reviews, and ensuring seamless integration of backend and frontend components. Clear communication and proactive problem-solving are essential, as you may also mentor junior developers and provide technical guidance to the team. This collaborative approach helps ensure that projects are delivered efficiently and meet both technical and business requirements.
What are the most commonly searched types of Net Developer jobs in Frederick, MD? The most popular types of Net Developer jobs in Frederick, MD are:
What cities near Frederick, MD are hiring for Senior Net Developer jobs? Cities near Frederick, MD with the most Senior Net Developer job openings:
Senior Net Developer jobs near you
Infographic showing various Senior Net Developer job openings in Frederick, MD as of July 2026, with employment types broken down into 79% Full Time, 10% Part Time, 1% Temporary, and 10% Contract. Highlights an 81% Physical, 4% Hybrid, and 15% Remote job distribution, with an average salary of $124,502 per year, or $59.9 per hour.
Sr. NET Developer / AI Developer - 100% Remote

Sr. NET Developer / AI Developer - 100% Remote

System One Holdings, LLC

Rockville, MD • On-site, Remote

$80 - $100/hr

Full-time

Medical, Dental, Vision, Life, Retirement

This job post has expired 1 day ago. Applications are no longer accepted.

Job description

Job Title: Sr. NET Developer / AI Developer
Location: REMOTE - BUT MUST BE LOCAL TO MD, VA or DC
Type: Contract
Compensation: Negotiable, W-2 or C2C
Work Model: Remote
Hours: 35 hours a week
All residency status may apply
Responsibilities
  • Design, build, modernize, and support modern applications in Microsoft Azure in collaboration with County staff.
  • 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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