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Senior Net Core Developer Jobs in Washington, DC

Jobsbridge

Senior .NET Developer

Washington, DC

$62.25 - $79.25/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. The client seeks senior ..NET Developers to support a complex application in ...

Creative IT Inc

Sr. NET Developer /AI Developer

Rockville, MD · On-site

$56 - $71.25/hr

We are seeking a Senior .NET Developer with strong cloud experience to design, build, modernize and ... NET Core/.NET 8, C#, and cloud-native architectures, with hands-on experience integrating Azure ...

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 ... Net Core/.NET 8, C#, and cloud-native architectures, with hands-on experience integrating Azure ...

New

Annexa Inc.

Senior .Net Developer

Washington, DC

$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 ...

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 ... NET Core/.NET 8, C#, and Azure services such as App Services, Functions, API Management, Service ...

New

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

$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 ...

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 ... Core, and current supported versions of .NET. * Develop scalable, maintainable, and reusable ...

JCD Staffing

Senior .NET Developer

Alexandria, VA

$58.75 - $75/hr

Senior .NET Developer Location: Alexandria, VA Work Schedule: Onsite 5 days per week Employment ... NET Framework, .NET Core, Angular, SQL Server, and API development . The ideal candidate will have ...

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 ... NET Core/.NET 8, C#, and cloud-native architectures, with hands-on experience integrating Azure ...

New

Andworx

Senior .NET Developer

Washington, DC · On-site

$62 - $79/hr

NET, .NET CORE, .NET 6, MVC, Entity Framework, and Oracle and Azure DevOps. You will work with a ... As Senior .NET Developer, the candidate will leverage their blend of business analysis ...

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Senior Net Core Developer information

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$68

$88

How much do senior net core developer jobs pay per hour?

As of Jul 24, 2026, the average hourly pay for senior net core developer in Washington, DC is $68.18, according to ZipRecruiter salary data. Most workers in this role earn between $59.90 and $76.25 per hour, depending on experience, location, and employer.

What is a Senior .NET Core Developer?

A Senior .NET Core Developer is an experienced software engineer who specializes in building web applications, APIs, and other software solutions using Microsoft's .NET Core framework. They are responsible for designing, coding, testing, and maintaining high-performance and scalable applications. In addition to strong technical skills, Senior .NET Core Developers often mentor junior team members, participate in architectural decisions, and ensure best practices in software development. Their expertise typically covers C#, ASP.NET Core, Entity Framework Core, and integration with various databases and cloud services.

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

To thrive as a Senior .NET Core Developer, a strong foundation in C#, .NET Core, object-oriented programming, and software architecture, often supported by a degree in computer science or related field, is essential. Expertise in tools such as Visual Studio, Azure DevOps, source control systems like Git, and familiarity with CI/CD pipelines and unit testing frameworks is typically required. Excellent problem-solving abilities, effective communication, and leadership skills help developers collaborate across teams and mentor junior staff. These skills and qualifications are crucial for delivering robust, scalable solutions and driving successful software projects.

What are some common challenges faced by Senior .NET Core Developers when working on large-scale enterprise applications?

Senior .NET Core Developers often encounter challenges such as managing complex codebases, ensuring high performance under heavy loads, and integrating with legacy systems or third-party services. They are frequently responsible for setting coding standards, performing code reviews, and mentoring junior developers, which requires strong communication and leadership skills. Additionally, staying up to date with the latest .NET Core features and best practices is essential for maintaining secure and scalable solutions in a fast-paced environment.

What is the difference between Senior Net Core Developer vs Software Engineer?

AspectSenior Net Core DeveloperSoftware Engineer
Required CredentialsBachelor's in CS or related field, experience with .NET CoreBachelor's in CS or related field, programming experience
Work EnvironmentDeveloping backend applications, working with .NET Core frameworksDesigning, developing, testing software across various platforms
Employer & Industry UsageTech companies, finance, healthcare using .NET technologiesBroad industry use, including tech, finance, startups, and enterprise

The main difference is that a Senior Net Core Developer specializes in building and maintaining backend applications using .NET Core, often with a focus on performance and scalability. A Software Engineer has a broader scope, working across different programming languages and platforms. Both roles require similar educational backgrounds and technical skills, but the Senior Net Core Developer role is more specialized in Microsoft technologies and backend development.

What are the most commonly searched types of Net Core Developer jobs in Washington, DC? The most popular types of Net Core Developer jobs in Washington, DC are:
What are popular job titles related to Senior Net Core Developer jobs in Washington, DC? For Senior Net Core Developer jobs in Washington, DC, the most frequently searched job titles are:
What job categories do people searching Senior Net Core Developer jobs in Washington, DC look for? The top searched job categories for Senior Net Core Developer jobs in Washington, DC are:
Senior Net Core Developer jobs near you
Sr. NET Developer /AI Developer - Rockville, MD

Sr. NET Developer /AI Developer - Rockville, MD

Creative Information Technology, Inc.

Falls Church, VA • On-site

$58.75 - $74.75/hr

Contractor

Posted yesterday

Job description



Sr. NET Developer /AI Developer – Rockville, MD

About us

Creative Information Technology Inc (CITI) is an esteemed IT enterprise renowned for its exceptional customer service and innovation. We serve both government and commercial sectors, offering a range of solutions such as Healthcare IT, Human Services, Identity Credentialing, Cloud Computing, and Big Data Analytics. With clients in the US and abroad, we hold key contract vehicles including GSA IT Schedule 70, NIH CIO-SP3, GSA Alliant, and DHS-Eagle II.


Join us in driving growth and seizing new business opportunities.

Role and Responsibilities


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 8, C#, and cloud-native architectures, with hands-on experience integrating Azure services such as App Services, Functions, API Management, Service Bus, Azure SQL, Azure OpenAI and AI Foundry, and GitHub Copilot for Developers. The contractor will work with County staff to modernize legacy .NET applications and implement AI-powered solutions.


  • Technical Skills: · Expert 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, Retrieval Augmented Generation (RAG), prompt engineering, and GitHub Copilot · Proficient with GitHub or Azure DevOps, CI/CD, and containerization ·
  • Solid understanding of SQL, Cosmos DB, and modern UI frameworks (Blazor/React/Angular)
  • Analytical and Problem-Solving Skills: · Exceptional analytical skills to evaluate data, identify trends, and provide actionable insights. · Experience conducting feasibility studies and solution assessments. · Expertise in conducting gap analyses.
  • Communication and Interpersonal Skills: · Excellent verbal and written communication skills to clearly articulate complex ideas to diverse audiences. · Strong interpersonal skills to effectively collaborate with stakeholders, project teams, and senior leadership.
  • Other Attributes: · Self-motivated and organized, with the ability to manage multiple priorities in a fast-paced environment. · A proactive mindset with a focus on driving results and achieving project goals. · Strong attention to detail and commitment to delivering high-quality work.