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Senior Asp Net Core Developer Jobs in Washington

Amentum

Software Developer - Senior

Fort George G Meade, MD · On-site

$60.50 - $79.75/hr

The Senior .NET Core Developer will be a key contributor to the development and maintenance of ... Understanding of ASP.NET Core 6.0 and related concepts to include Razor Pages, Dependency Injection ...

Pae

Software Developer - Senior

Fort George G Meade, MD

$60.50 - $79.75/hr

The Senior .NET Core Developer will be a key contributor to the development and maintenance of ... Understanding of ASP.NET Core 6.0 and related concepts to include Razor Pages, Dependency Injection ...

Deegit Inc

Sitecore Developer - Hanover, MD

Hanover, MD · On-site

$99K - $122K/yr

Sitecore Developer Location: Hanover, MD Duration: 10+ Months Contract Technology -->Experience ... web application,ASP. NET,AJAX,WCF,JavaScript, Jquery,HTML, JavaScript, CSS Technology Skills ...

Andworx

Senior .NET Developer

Washington, DC · On-site

$62 - $79/hr

Hands-on experience with ASP.NET, .NET 6 .NET Core, C# .NET, MVC, MVVM, Entity and similar .NET ... As Senior .NET Developer, the candidate will leverage their blend of business analysis ...

FSR, LLC.

Senior Application Developer

Washington, DC · On-site +1

$108K - $149K/yr

A Sr. technical expert on software engineering with modern and cloud technologies is needed to pave ... Can code at an expert level in applications such as C#, ASP.NET, .NET Core, SQL, React, TypeScript ...

FSR, LLC.

Senior Application Developer

Washington, DC

$108K - $149K/yr

A Sr. technical expert on software engineering with modern and cloud technologies is needed to pave ... Can code at an expert level in applications such as C#, ASP.NET, .NET Core, SQL, React, TypeScript ...

Veredus - DC

ASP.NET/VB.NET Developer

Washington, DC · On-site

$102K/yr

Company Description Position: ASP.NET/VB.NET Developer Terms: 6 month contract to hire Pay Rate: $53 Salary Conversion: $98-102k/yearly Interview Availability: Next Monday, Tuesday, and Wednesday ...

Northramp LLC

Software Developer

Washington, DC · On-site +1

NET MVC and ASP.NET Core web applications supporting federal programs. • Engage directly with ... NET. • Configure and support CI/CD pipelines using GitHub Actions and Azure DevOps tooling. • ...

Northramp LLC

Software Developer

Washington, DC

NET MVC and ASP.NET Core web applications supporting federal programs. Engage directly with federal ... NET. Configure and support CI/CD pipelines using GitHub Actions and Azure DevOps tooling.

Northramp LLC

Software Developer

Washington, DC · Remote

NET MVC and ASP.NET Core web applications supporting federal programs. * Engage directly with ... NET. * Configure and support CI/CD pipelines using GitHub Actions and Azure DevOps tooling.

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Senior Asp Net Core Developer information

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

AspectSenior Asp Net Core DeveloperSoftware Engineer
Required CredentialsBachelor's in CS or related field, experience with ASP.NET Core, C# certificationsBachelor's in CS or related field, programming experience, certifications vary
Work EnvironmentWeb development teams, enterprise applications, tech companiesVaried industries including tech, finance, healthcare, often in teams or as individual contributors
Employer & Industry UsagePrimarily in software/web development companies, IT departmentsAcross multiple industries, including tech, manufacturing, finance, and startups

While both roles require strong programming skills and technical knowledge, a Senior Asp Net Core Developer specializes in building and maintaining web applications using ASP.NET Core, whereas a Software Engineer may work across various software domains. The Senior Asp Net Core Developer role is more focused on web development within specific frameworks, while Software Engineers have broader responsibilities across different technologies.

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Lead Developer, Senior

Nationwide IT Services, Inc

Washington, DC • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 17 hours ago

Job description

Lead Developer, Senior
Location: Washington, DC Metropolitan Area
Employment Type: Full-Time
Clearance Requirement: Must be able to successfully obtain and maintain a Tier 2 (Moderate Risk) Public Trust background investigation before contract performance.
The Federal Mediation and Conciliation Service (FMCS) is an independent U.S. federal agency dedicated to fostering productive labor-management relationships and helping employers and labor unions resolve workplace disputes without the need for strikes, lockouts, or litigation. Through mediation, arbitration, conflict prevention, and collaborative training programs, FMCS helps improve communication and cooperative problem-solving while administering labor relations programs under federal law to support stable, productive workplaces nationwide.
Position Overview
Nationwide IT Services (NIS) is seeking an accomplished Senior Lead Developer to provide technical leadership and hands-on software engineering support for a Federal Application Development and Support Services (ADSS) program. This individual will lead software development activities across multiple enterprise applications, mentor development teams, establish engineering best practices, and deliver secure, scalable, and maintainable solutions supporting mission-critical business systems.
The Senior Lead Developer will collaborate closely with the Program Manager, Technical Lead / Solution Architect, Government stakeholders, cybersecurity personnel, business analysts, and DevSecOps engineers to support application modernization, cloud migration, operations and maintenance, and the development of new enterprise capabilities.
Key Responsibilities
  • Serve as the senior technical lead for application development, software engineering, and system enhancement activities.
  • Lead Agile software development teams through all phases of the Software Development Life Cycle (SDLC).
  • Design, develop, test, document, and maintain enterprise applications supporting Federal business operations.
  • Translate functional requirements into scalable, secure, and maintainable software solutions.
  • Lead code reviews and establish coding standards, development practices, and quality assurance processes.
  • Mentor developers and foster continuous improvement across the development team.
  • Develop and maintain RESTful APIs, web services, backend services, and enterprise integrations.
  • Build and enhance Microsoft 365, Power Platform, SharePoint Online, Azure, and .NET-based solutions.
  • Support application modernization and migration from legacy platforms to cloud-native architectures.
  • Collaborate with DevSecOps engineers to implement CI/CD pipelines, automated testing, source control, and deployment automation.
  • Troubleshoot complex application issues and perform root cause analysis.
  • Optimize application performance, scalability, reliability, and maintainability.
  • Develop technical documentation, software design documents, run books, and configuration artifacts.
  • Support Authority to Operate (ATO), vulnerability remediation, secure coding, and cybersecurity compliance activities.
  • Participate in sprint planning, backlog refinement, daily standups, demonstrations, retrospectives, and release planning.
  • Work closely with business stakeholders to evaluate enhancement requests and recommend technical solutions.
  • Assist in estimating development effort, technical planning, and release scheduling.
Required Qualifications
  • Bachelor's degree in computer science, Software Engineering, Information Technology, or related discipline.
  • Minimum of 8 years of enterprise software development experience.
  • Minimum 5 years supporting Federal Government IT systems.
  • Minimum 3 years serving in a Lead Developer or Technical Lead role.
  • Extensive experience developing enterprise web applications using Microsoft technologies.
  • Strong understanding of Agile software development methodologies.
  • Experience mentoring software developers and leading technical teams.
  • Excellent analytical, troubleshooting, and problem-solving skills.
  • Strong written and verbal communication skills.
Desired Certifications
One or more of the following certifications are highly desirable:
  • Microsoft Certified: Azure Developer Associate
  • Microsoft Certified: Power Platform Developer Associate
  • Microsoft Certified: Azure Administrator Associate
  • Certified Scrum Developer (CSD)
  • Certified ScrumMaster (CSM)
  • SAFe Practitioner
  • Security+ (preferred)

Technical Skills
Candidates should possess strong experience in many of the following technologies:
Programming Languages
  • C#
  • .NET Framework
  • .NET Core / .NET
  • ASP.NET MVC
  • ASP.NET Core
  • JavaScript
  • TypeScript
  • HTML5
  • CSS3
  • SQL
  • PowerShell
Microsoft Technologies
  • Microsoft Azure Government
  • Microsoft Azure
  • Microsoft 365
  • SharePoint Online
  • Microsoft Teams
  • Power Apps
  • Power Automate
  • Power Pages
  • Power BI
  • Dataverse
Database Technologies
  • Microsoft SQL Server
  • PostgreSQL
  • Entity Framework
  • Database design
  • Stored procedures
  • Performance tuning
Cloud & DevSecOps
  • Azure DevOps
  • Git
  • GitHub
  • CI/CD pipelines
  • Automated testing
  • Release management
  • Infrastructure as Code (preferred)
Development Practices
  • REST APIs
  • Microservices
  • Object-Oriented Programming
  • Secure coding
  • Unit testing
  • Integration testing
  • Performance optimization
  • Code reviews
Security
  • Secure SDLC
  • FISMA
  • NIST SP 800-53
  • ATO support
  • Vulnerability remediation
  • Identity and Access Management
  • Application security
  • Why Join Nationwide IT Services?
    Nationwide IT Services is a trusted government contractor supporting Department of Defense customers. Join us to work on high-impact cybersecurity missions with experienced professionals in a collaborative, growth-focused environment.
    Our benefits package includes medical, dental, and vision insurance; life and disability insurance; a 401(k) plan with employer match; paid holidays; PTO (sick/vacation); commuter benefits; an employee assistance program (EAP); educational reimbursement; and Pet Insurance.
    Nationwide IT Services, Inc. provides equal employment opportunities (EEO) to all qualified applicants regardless of race, color, religion, sex, national origin, sexual orientation, gender identity, genetics, disability, or protected veteran status.
    Salary range $130,000 to $240,000 annually
    The salary range is a general guideline. We consider several factors when determining base salary offers, including the position's scope and responsibilities, the candidate's experience, education, and skills, and current market conditions.

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