ZipRecruiter

Log In

1

Senior Net Application Developer Jobs in Bethesda, MD

Marathon TS

Be Seen First

Senior NET Developer

Arlington, VA · On-site

$140K - $160K/yr

Marathon TS is seeking a Senior ... Net Application Developer to support the critical mission of the Drug Enforcement Administration ...

AVER

.Net Application Developer

Washington, DC · On-site

AVER is seeking a Net Application Developer with in-depth knowledge and experience assisting with agile methodology development for software maintenance and operations using .NET based coding tools.

Cloud BC Labs

Sr Application Developer

Reston, VA · On-site +1

$99K - $137K/yr

Position : Sr Application Developer Location : Remote Term : W2 Role Duration : Long term Job Summary: We are seeking a Senior Application Programmer/Developer to provide advanced front-end ...

Tuba Group, Inc.

Senior Application Developer

Washington, DC · Remote

$98K - $135K/yr

The Application Developer - Senior will design, develop, sustain, and enhance software applications supporting the DLA Map Catalog program. The position will support enterprise-level application ...

Worky

Sr. Application Developer

Washington, DC · On-site

$108K - $149K/yr

Overview BigBear.ai is seeking a Senior Application Developer to support the Defense Intelligence Agency (DIA). This position will be based out of Washington, D.C. and will offer remote flexibility.

Amyx, Inc.

Application Developer

Arlington, VA · On-site

Amyx is seeking to hire a Sr Application Developer to support our Army client at the Pentagon. * The Application Developer will perform development, design, and implementation activities for custom ...

Amyx, Inc.

Application Developer

Arlington, VA · On-site

Overview Amyx is seeking to hire a Sr Application Developer to support our Army client at the Pentagon. Responsibilities * The Application Developer will perform development, design, and ...

KurzSolutions

Senior Application Developer

Washington, DC · On-site

$108K - $148K/yr

They are seeking a Senior Application Developer who will translate requirements into detailed design specifications, test and debug software, and provide technical direction to ensure products meet ...

BLN24

Senior Application Developer

Mclean, VA · On-site

$97K - $133K/yr

Job Title:  Senior Application Developer (NOAA/AWIPS) Company: BLN24 About Us: We find strength in teamwork-a better you is a better us BLN24 is an award-winning Management Consulting Firm ...

Markon

Senior Application Developer

Annapolis Junction, MD · On-site

$120K - $200K/yr

The Senior Application Developer will work closely with data scientists and end users to develop innovative analytic tools to further discovery and tradecraft around critical global challenges, then ...

Markon

Senior Application Developer

Annapolis Junction, MD · On-site

$120K - $200K/yr

The Senior Application Developer will work closely with data scientists and end users to develop innovative analytic tools to further discovery and tradecraft around critical global challenges, then ...

BLN24

Senior Application Developer

Mclean, VA · On-site

$97K - $133K/yr

Senior Application Developer (NOAA/AWIPS) Company: BLN24 About Us:We find strength in teamwork-a better you is a better us BLN24 is an award-winning Management Consulting Firm thatsupports the U.S.

All Native Group

Senior Application Developer

Arlington, VA · On-site

$109K - $150K/yr

Working within the SearchPlus and application development team, the Senior Application Developer designs, builds, and maintains enterprise web applications and search capabilities that serve a user ...

next page

Showing results 1-20

All JobsNet Application Developer JobsSenior Net Application Developer JobsSenior Net Application Developer Jobs in Bethesda, MD

Senior Net Application Developer information

See Bethesda, MD salary details

$107.6K

$133.1K

$148.8K

How much do senior net application developer jobs pay per year?

As of Sep 9, 2026, the average yearly pay for senior net application developer in Bethesda, MD is $133,113.00, according to ZipRecruiter salary data. Most workers in this role earn between $122,500.00 and $144,500.00 per year, depending on experience, location, and employer.
Infographic showing various Senior Net Application Developer job openings in Bethesda, MD as of August 2026, with employment types broken down into 74% Full Time, 22% Part Time, and 4% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $133,113 per year, or $64 per hour.

Senior NET Developer

Arlington, VA • On-site

Marathon TS
IT Services • 51 - 200 employees
Learn more about Marathon TSexternal

$140K - $160K/yr

Full-time

Medical, Dental, Vision, PTO

Posted 14 days ago

Be Seen First

After you apply to this job, you can share why you’re interested to jump to the top of the candidate list.

Job description

Marathon TS is seeking a Senior .Net Application Developer to support the critical mission of the Drug Enforcement Administration (DEA). We are developing the applications that provide the tools necessary for our drug enforcement agents and the greater law enforcement community to take illicit drugs and those who traffic them off the street. The current opioid crisis in our country is testament to the critical mission of the DEA.

Location: Arlington, VA or Merrifield, VA (5 days a week onsite)

Clearance: Active Secret clearance

Responsibilities:

  • Works in a collaborative team environment to develop and enhance code for applications built within the Concorde framework, ensuring high-quality and efficient solutions.
  • Demonstrates strong expertise in Agile development methodologies through daily activities, including sprint participation, task execution, and adherence to Agile principles.
  • Participates in meetings, discussions, and demonstrations related to the development of applications and associated data across Classified, Unclassified, and Sensitive but Unclassified environments.
  • Possesses the knowledge and capability to support non-Concorde legacy applications as needed, contributing to seamless integration and operational continuity.
  • Possesses a foundational understanding of DevSecOps principles.

Requirements:

  • Top-notch experience in Microsoft .NET languages (primarily ASP.NET, C#, and LINQ), technologies (MVC, Entity Framework, Unity), and tools (Visual Studio 2010, Team Foundation Server, ReSharper). Experience with SharePoint, NHibernate, jQuery and JavaScript, AJAX, HTML and CSS, Oracle and SQL Server databases, T4 templates, and even Classic ASP, is also desired.
  • Recent 8+ years of ASP.Net C# MVC-based web development experience using Visual Studio 2017 or higher.
  • 5+ years of .Net Core/Standard development experience.
  • 5+ years of experience with Agile development methodologies, including participation in sprints, backlog grooming, and Agile ceremonies.
  • Experience as a developer in a software environment that supported more than 10,000 users and a Relational Database Management System (RDBMS) with more than 250 tables and 1 million total rows.
  • Significant recent Java Script development experience.
  • Significant development experience with Cascading System Sheets (CSS).
  • Experience with relational data models and SQL.
  • Experience with XML and programming libraries for XML manipulation.
  • Agile project and development experience utilizing Team Foundation Server.
  • Ability to quickly deliver small projects, and to frequently transition between projects and applications.
  • Experience in packaging and delivering software and documentation to a production environment.
  • Excellent communication skills.
  • Must be a U.S. Citizen and have an active Secret clearance.
  • Applicants selected will be subject to a government security background investigation and must meet eligibility and DEA suitability requirements.

Education/Experience:

  • Bachelor's degree in Computer Science, Engineering, or a related field (14+ years of demonstrated experience may be substituted).
  • 10+ years of general experience, including 10 years of specialized and/or hands-on experience in Agile development methodologies

Company Description

Marathon TS provides a full range of professional services for clients that require support from professionals with specialized skills and experience in a specific technical area or subject matter. Marathon TS also provides IT solutions, including strategy, operations, transformation and mission support.

Marathon TS logo

About Marathon TS

Sourced by ZipRecruiter

Marathon TS provides a full range of professional services for clients that require support from professionals with specialized skills and experience in a specific technical area or subject matter. Marathon TS also provides IT solutions, including strategy, operations, transformation and mission support.

Industry

It services

Company size

51 - 200 Employees

Headquarters location

Sterling, VA, US

Year founded

2009

Social media

FacebookTwitter

View All Marathon TS Jobs