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Senior Net Core Developer Jobs in Washington, DC

Evolver Federal

Senior .NET Developer

Washington, DC · On-site

$135K - $165K/yr

Evolver is seeking a Senior .NET Developer to support the work and projects of our client in ... Net Core and above * Experience with Test Driven Development (TDD) * Must be able to pass a USCP ...

Evolver

Senior .NET Developer

Washington, DC · On-site

$62.25 - $79.25/hr

Evolver is seeking a Senior .NET Developer to support the work and projects of our client in ... Net Core and above * Experience with Test Driven Development (TDD) * Must be able to pass a USCP ...

Serigor, Inc.

Senior .NET Developer (Onsite)

Columbia, MD · On-site

$53.75 - $70.75/hr

NET modernization and migration initiatives, including AI-assisted code conversion efforts ... NET Core * .NET Framework / .NET Core / .NET 6+ * Web APIs / RESTful Services * gRPC Services

Booz Allen Hamilton

Senior Software Engineer

Mclean, VA · On-site

$86K - $198K/yr

Job Number: R0242785 Software Engineer, Senior The Opportunity: We're looking for a passionate ... Experience with C#, NET Core, Web API, IIS, MVC, and LINQ or Entity Framework * Experience with CI ...

Booz Allen Hamilton

Software Engineer, Senior

Mclean, VA · On-site

$86K - $198K/yr

Software Engineer, Senior The Opportunity: We're looking for a passionate, full-stack software ... Experience with C#, NET Core, Web API, IIS, MVC, and LINQ or Entity Framework * Experience with CI ...

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 ...

NAVA Software Solutions

Sr. DevOps Engineer

Bethesda, MD · On-site

$139K - $178K/yr

Details: Sr. DevOps Engineer Location: Bethesda, MD or Boynton Beach, FL - Onsite from day 1 ... NET Core 2.1/3/NET 5, SQL Server or Azure SQL/CosmosDB, and design/architectural patterns (e.g ...

Two95 International Inc.

Senior .Net Developer

Washington, DC · On-site

$62.25 - $79.25/hr

Senior .Net Developer Location: Washington, DC Position Type: Long term contract Skills and work experience with the following technologies .NET C# - Strong skill required HTML 4.0 - Strong skills ...

Workila

Senior .NET Developer

Mclean, VA · On-site

$55.50 - $70.75/hr

The Senior Developer position requires the ability to provide hands-on development skills (primarily ASP .NET and SQL) and direct development team management in both a Waterfall and an Agile Scrum ...

Two95 International Inc.

Senior .Net Developer

Washington, DC · On-site

$62.25 - $79.25/hr

Senior .Net Developer Location: Washington, DC Position Type: Long term contract Skills and work experience with the following technologies • .NET C# - Strong skill required • HTML 4.0 - Strong ...

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Senior Net Core Developer information

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

As of Jul 3, 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
Senior .NET Developer

Senior .NET Developer

Seneca Resources Company, LLC

Vienna, VA • On-site

$130K/yr

Contractor

Posted 15 days ago

Job description

About Seneca Resources:
Seneca Resources is client driven provider of strategic Information Technology consulting services and Workforce Solutions to government and industry. Seneca Resources is a leading IT services provider with offices in Reston, Virginia, Alabama and Columbia, Maryland that service clients throughout the United States. The key to our success lies within our strong corporate culture which drives our business. We challenge our staff through engaging work, and we reward our staff through competitive compensation, extensive professional training, and excellent opportunities for career advancement. In turn, we look for only the best and brightest to join our team. We are an Equal Opportunity Employer and value the benefits of diversity in our workplace.
Position: Senior .NET Developer
Location: Washington, DC
Clearance/Citizenship: US Citizenship required to support a federal client
Compensation: Very Competitive
Summary:
Experienced software developer to lead the design and development of an integrated web application to support the client's internal business processes. Will work closely with the project manager, other development leads and subject matter experts to analyze requirements, develop application architecture and design key application components as part of the core development team. Will lead a team of 3-4 module developers to design, develop and integrate multiple modules into the overall product. Will be responsible for interfacing with Analyst, QA, infrastructure and support teams to support planning activities for QA and release deployment phases.
Key Responsibilities
  • Writing secure, reusable, and easily maintainable code
  • Design, develop and maintain ASP.Net applications following industry best practices
  • Database design/development - MS SQL Server (2008, 2012, 2014)
  • Communicate effectively with management, colleagues, and partners

Qualifications
  • Must be a U.S. Citizen
  • 4-year degree in a related field, or equivalent certifications and experience
  • Minimum of 10 years of progressive experience developing web applications using Microsoft .NET technologies
  • In-depth experience with C# and ASP .NET 4.5.
  • In-depth understanding of relational databases and SQL for implementing database-driven, web-based applications using T-SQL and Stored Procedures
  • Strong experience in ASP.NET in C#, .NET Framework, Web Services, WCF, ADO.NET, Entity Framework, Web Forms, MVC, JQuery, Angular JS, SOA
  • Experience with advanced UX technologies/frameworks including development of Rich Internet Applications (RIA)
  • Experience in Visual Studio & Team Foundation Services
  • Experience in MS SQL Server 2012/2014, T-SQL & Stored Procedures
  • Excellent verbal communication skills, as well as strong problem solving abilities and an aptitude for learning new technologies
  • Self-motivated, with a strong sense of accountability

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