System One
System One

60 System One Software Jobs Hiring Near You

Lead .Net Developer (Secret clearance)

Reston, VA · On-site

$61.50 - $80.25/hr

Requirements: • Experience as a developer in a software environment that supported more than 10,000 users and a Relational Database Management Systems (RDBMS) with more than 250 tables and 1 ...

Lead .Net Developer (Secret clearance)

Reston, VA · On-site

$61.50 - $80.25/hr

Experience as a developer in a software environment that supported more than 10,000 users and a Relational Database Management Systems (RDBMS) with more than 250 tables and 1 million total rows.

Lead .Net Developer (Secret clearance)

Reston, VA · On-site

$61.50 - $80.25/hr

Experience as a developer in a software environment that supported more than 10,000 users and a Relational Database Management Systems (RDBMS) with more than 250 tables and 1 million total rows.

Lead .Net Developer (Secret clearance)

Reston, VA · On-site

$61.50 - $80.25/hr

Experience as a developer in a software environment that supported more than 10,000 users and a Relational Database Management Systems (RDBMS) with more than 250 tables and 1 million total rows.

Job Title: Software Systems Engineer III Location: Huntsville, AL Type: Contract - W2 only ... System One not only serves as a valued partner for our clients, but we offer eligible employees ...

Job Title: Software Systems Engineer III Location: Huntsville, AL Type: Contract - W2 only ... System One not only serves as a valued partner for our clients, but we offer eligible employees ...

Job Title: Software Systems Engineer III Location: Huntsville, AL Type: Contract - W2 only ... System One not only serves as a valued partner for our clients, but we offer eligible employees ...

Job Title: Software Systems Engineer III Location: Huntsville, AL Type: Contract - W2 only ... System One not only serves as a valued partner for our clients, but we offer eligible employees ...

Job Title: Software Systems Engineer III Location: Huntsville, AL Type: Contract - W2 only ... System One not only serves as a valued partner for our clients, but we offer eligible employees ...

Job Title: Software Systems Engineer III Location: Huntsville, AL Type: Contract - W2 only ... System One not only serves as a valued partner for our clients, but we offer eligible employees ...

Job Title: Software Systems Engineer III Location: Huntsville, AL Type: Contract - W2 only ... System One not only serves as a valued partner for our clients, but we offer eligible employees ...

Active Secret clearance (or ability to obtain) OVERVIEW System One is hiring a Software Engineer with strong C/C++ experience to support mission-critical defense/tactical software. You'll help build ...

Software Architect Location: San Diego, CA Type: Contract Compensation: $51.17/hour Work Model ... System One not only serves as a valued partner for our clients, but we offer eligible employees ...

Software Architect Location: San Diego, CA Type: Contract Compensation: $51.17/hour Work Model ... System One not only serves as a valued partner for our clients, but we offer eligible employees ...

Software Architect Location: San Diego, CA Type: Contract Compensation: $51.17/hour Work Model ... System One not only serves as a valued partner for our clients, but we offer eligible employees ...

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System One Jobs Information

What is it like to work at System One?

System One is a professional services company that values collaboration, innovation, and a client-centric approach, fostering a dynamic and supportive work environment.

The company's team structure is designed to facilitate knowledge sharing and expertise exchange, with a flat organizational hierarchy that encourages open communication and cross-functional collaboration. System One's mission is to deliver high-quality solutions to its clients through a network of experienced professionals and cutting-edge technologies.

Working at System One may appeal to candidates who are looking for a challenging and rewarding career in a fast-paced, client-driven industry, with opportunities for professional growth and development in a collaborative and dynamic work environment.

What makes System One an attractive place to work?

System One is a leading provider of workforce solutions and staffing services, known for its expertise in delivering high-quality talent to various industries. The company's workplace is characterized by a culture of innovation, collaboration, and flexibility, offering employees opportunities to work on diverse projects and develop their skills in a dynamic environment. By joining System One, professionals can expect to contribute to the growth and success of a forward-thinking organization, with opportunities for career advancement and professional development in a rapidly evolving industry.

What are the most popular job types at System One?

    Infographic showing various Software job openings at System One in the United States as of August 2026, with employment types broken down into 1% As Needed, 27% Full Time, and 72% Contract. Highlights an 76% Physical, and 24% Remote job distribution.

    Lead .Net Developer (Secret clearance)

    System One

    Reston, VA • On-site

    $61.50 - $80.25/hr

    Other

    Medical, Dental, Vision, Life, Retirement

    Posted 9 days ago


    Job description

    Lead .Net Developer
    Arlington, VA or Merrifield, VA - ONSITE
    Secret Clearance is required to start 
    Must be able to obtain DEA clearance – 2-6 month process

    Responsibilities:
    •    Lead a team of 5-7 developers in support of the mission with an ability to guide them on technical decisions, best practices, and team efficiencies
    •    Lead technical planning meetings
    •    Conduct peer code reviews and final code reviews
    •    Demonstrate soft skills in terms of professionalism, conduct and execution in a client-facing role
    •    Have an ability to effectively collaborate with leadership and customers
    •    Ensure the Requirements Analysts data is accurately reflected in the appropriate system of record
    •    Ensure quality and integrity of the software prior to it reaching production
    •    Apply modern software development techniques for a modular system
    •    Have an ability to learn new technologies as they are introduced, and the software applications and environment evolves
    •    Support modernization of software development practices
    •    Significant recent C# development experience.
    •    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.
     
    Requirements:
    •    Experience as a developer in a software environment that supported more than 10,000 users and a Relational Database Management Systems (RDBMS) with more than 250 tables and 1 million total rows.
    •    Experience in at least one software development environment with a minimum of 1,000 automated unit tests.
    •    Recent development experience (at least 5+ years) with ASP.NET MVC based web development using Visual Studio..
    •    Must have an Active Secret clearance in order to view, discuss, and handle classified data in support of applications.
    Experience/Education:
    •    Minimum 15 years of web development experience.
    •    Minimum 5 year of .Net Core/Standard development experience.
    •    Minimum 10 years of ASP.Net C# MVC based web development experience using Visual Studio 2017 or higher.
    •    Minimum 8 years of experience with Agile development methodologies including participation in Sprints, Backlog grooming, and Agile Ceremonies.
    •    Bachelor’s degree in a related technical field, desired
    Nice to Have:
    •    5+ years of e-GIS experience, including:
    •    Geolocation from addresses to Lat/Long.
    •    Utilizing mapping software in a web context (e.g., Open Street Maps or similar).
    •    Displaying and placing marking pins on satellite imagery.
    •    Leveraging distance measurement tools on maps in a web browser.

    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.

    #M1
    #LI-VH1
    Ref: #851-Rockville-S1


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    About System One

    Sourced by ZipRecruiter

    System One helps employers get work done more efficiently and economically without compromising quality. Over our 35+ year history, we've helped connect thousands of talented people with innovative companies. The excitement of a perfect fit motivates us every single day.

    Industry

    Business consulting services and recruiting and staffing services

    Company size

    5,001 - 10,000 Employees

    Headquarters location

    Pittsburgh, PA, US