Sr. .Net Developer

Marathon TS; Arlington (VA); On-site; USD 120,000 - 160,000; Full time

Job summary

Marathon TS is seeking a Senior .Net Application Developer to support the critical mission of the DEA in Arlington/Merrifield, VA with onsite work five days a week. Responsibilities include developing and enhancing code within the Concorde framework, applying Agile practices, collaborating across environments, and supporting legacy applications while adopting DevSecOps principles.

The role requires 8+ years of ASP.NET MVC experience, 5+ years .NET Core, strong SQL/XML skills, and US Citizenship

Qualifications

• 8+ years of ASP.NET C# MVC web development with VS2017+.

Responsibilities

• Develop and enhance code within the Concorde framework for high-quality solutions.
• Participate in Agile sprints, ceremonies, and daily standups to drive delivery.
• Collaborate across Classified, Unclassified, and SBU environments for data and app integration.
• Support non-Concorde legacy applications to ensure seamless operations.
• Apply DevSecOps practices and packaging/documentation for production deployments.

Skills

ASP.NET MVC

.NET Core

Agile

SQL relational DB

TFS / Azure DevOps

XML

Education

B.S. in CS/Eng

Tools

Visual Studio 2017+

Team Foundation Server

SQL Server

Job description

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

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

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:

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 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.

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

Marathon TS is committed to the development of a creative, diverse and inclusive work environment. In order to provide equal employment and advancement opportunities to all individuals, employment decisions at Marathon TS will be based on merit, qualifications, and abilities. Marathon TS does not discriminate against any person because of race, color, creed, religion, sex, national origin, disability, age or any other characteristic protected by law (referred to as "protected status ").