Senior .Net Application Developer (Secret clearance)

System One; Reston (VA); On-site; USD 110,000 - 160,000; Full time

Benefits offered by this job

Health insurance

Job summary

System One in Arlington, VA or Merrifield, VA is seeking a Senior .Net Developer for onsite work. The role requires an active Secret clearance and hands-on experience with ASP.NET, C#, and modern .NET development within Agile teams.

Responsibilities include collaborating in a team to develop and enhance code, participating in Agile ceremonies, supporting legacy applications, and integrating across Classified, Unclassified environments.

Qualifications

• 8+ years of ASP.Net C# MVC-based web development experience with Visual Studio 2017+.
• 5+ years of .Net Core/Standard development experience.
• 5+ years of Agile development experience including sprints, backlog grooming, and ceremonies.
• Experience with large-scale applications serving thousands of users and complex RDBMS.
• Recent JavaScript development experience and CSS styling.
• Experience with XML and data modeling.

Responsibilities

• Collaborate in a team environment to develop and enhance code within the Concorde framework.
• Engage in Agile sprint activities, including planning, daily standups, and reviews.
• Participate in development discussions and demonstrations across Classified, Unclassified, and SBU environments.
• Support non-Concorde legacy applications as needed for continuity.
• Apply DevSecOps principles in development and deployment processes.

Skills

C#

ASP.NET

MVC

LINQ

Entity Framework

Unity

SharePoint

NHibernate

JavaScript

jQuery

HTML/CSS

Oracle

SQL Server

T4 templates

Classic ASP

XML

Team Foundation Server

ReSharper

Education

Bachelor’s degree in Computer Science or related field

Tools

Visual Studio 2010+

Team Foundation Server

ReSharper

Job description

Senior .Net Developer

Arlington, VA or Merrifield, VA - ONSITE

Secret Clearance is required to start

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 JavaScript 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 have an Active Secret clearance.
• Applicants selected will be subject to a government security background investigation and must meet eligibility and 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

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.