Java Software Engineer (Top Secret)
20171, Virginia
Experience: 0
Category: Information Technology
Contractor Work Model: Remote
Brand: System One
Compensation Range: 175000.00 - 200000.00
Job ID: 376835
Date Posted: 07/15/2026
Shortcut: http://jobs.systemone.com/1RTFwh
Java Software Developer
Top Secret Clearance required
Security+ certification is highly desired
Direct Hire
100% Remote
The specific platform knowledge (currently MuleSoft) can be learned. What cannot easily be taught is the engineering mindset and the ability to build high-quality software.
While it is desirable for candidates to already possess Security+ certification and an active Top Secret clearance; our primary focus is on identifying exceptional software developers.
What We're Looking For:
We are looking for someone who has consistently demonstrated excellence as a software developer—someone whose peers and leaders recognize them for delivering high-quality work.
The ideal candidate has an engineering temperament: the ability to understand complex systems, reduce complexity through thoughtful design, and express that clarity through well-crafted code and architecture.
They should possess a builder's mindset—a belief that they can create solutions to difficult problems, a desire to build things well, and the initiative to improve systems without waiting to be asked.
We value developers who thrive in collaborative environments, enjoy challenging one another to improve, and are committed to delivering results. We are looking for someone who takes ownership, contributes beyond the minimum expectations, and is invested in the success of the team.
Technical Background:
No specific programming language or platform is more important than demonstrated engineering capability. However, experience in the following areas would reduce the learning curve:
• Java
• Linux
• Networking
• MuleSoft (preferred, but not a primary hiring criterion)
• MuleSoft experience is a plus, but we are intentionally hiring for software engineering talent rather than platform specialization. A great developer can learn MuleSoft; the reverse is not always true.
Experience:
• We want to see evidence of candidates building meaningful software components or systems and consistently going above and beyond in their projects.
• A senior engineer with broad or deep experience would be an excellent fit, but seniority alone is not the deciding factor. A junior developer who demonstrates exceptional aptitude, initiative, and the potential to grow into a highly capable senior engineer is equally compelling.
• Finally, candidates who bring unexpected strengths—whether in systems engineering, performance optimization, security, infrastructure, automation, or another technical discipline—are especially attractive. We value people who can surprise us with capabilities that make the entire team stronger.
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
-
Backend Java Developer (hybrid)
Vienna, VA
Backend Java Developer Vienna, VA – hybrid (3 days a week onsite) Pay Rate: Open to Both C2C and W2 options Position Type: Multiyear Contract We're seeking a curious, technically minded professional who loves solving complex problems, understands how g...
Date Posted: 08/04/2026 Recommended
-
Sr Electrical Engineer (Secret Clearance)
Chantilly, Virginia
Job Title: Sr Electrical Engineer (Secret Clearance) Location: Chantilly, VA Type: Direct Hire Work Model: Onsite Security Clearance: Active Secret or Top Secret security clearance Compensation: $110,000 to $170,000 annually, commensurate with experien...
Date Posted: 08/06/2026 Recommended
-
Cloud Developer
35801, Alabama
Cloud Developer – Active Top Secret Required Onsite – Huntsville, Alabama Open Systems Technologies Corporation is seeking a Cloud Developer to support BAE Systems and a large SOC enterprise environment in Huntsville, Alabama. This is an onsite positio...
Date Posted: 07/28/2026 Recommended
-
Estimating Planner
Sapulpa, OK
System One is working with a local client who needs an Estimating Planner ACCE software (commonly referring to Trimble ACCE) is a construction cost estimating and planning tool used by estimators and preconstruction planners to build detailed, itemized...
Date Posted: 08/20/2026 Recommended
-
Lead Full-Stack Developer
McLean, VA
Lead Full-Stack Developer Remote This role supports a federal client and requires the ability to obtain a public trust clearance. No sponsorship is available. We are seeking a Lead Full-Stack Developer to support a major federal modernization initiativ...
Date Posted: 06/22/2026 Recommended
-
Electrical Engineer
Cypress, TX
Job Title: Electrical Engineer Location: Houston, Texas Type: Direct Hire Compensation: $130,000 - $170,000 Contractor Work Model: Hybrid Hours: Monday - Friday, 8-5 Company Overview A growing engineering and consulting firm is expanding their presence...
Date Posted: 06/01/2026 Recommended
-
Sr. Controls Engineer
Morgantown, West Virginia
Job Title: Sr. Controls Engineer Location: Morgantown, WV Type: Direct Hire Compensation: Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Responsibilities Develop the control architecture to ensure the facility is collecting the data and in...
Date Posted: 07/02/2026 Recommended
-
Lead Kafka Developer
Pittsburgh, PA
Job Title: Lead Kafka Developer – Software Engineer Lead Location: Pittsburgh, PA Type: Contract Compensation: Contractor Work Model: Onsite – onsite Hours: 40.0 Responsibilities Design and develop Kafka-based streaming architectures and data pipelines...
Date Posted: 08/12/2026 Recommended
-
Mechanical Engineer (mid-level)
Hookstown, PA
Job Title: Mechanical Engineer (mid-level) Location: Hookstown, PA Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite – onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to Nuclear restrictions Overview Syste...
Date Posted: 07/24/2026 Recommended
-
Python Full Stack Developer (TS/SCI clearance)
Suitland, Maryland
Python Full Stack Developer Suitland, MD – 2-3 days/week onsite TS/SCI clearance is required Stack: Python/Django, React/Next.js, PostgreSQL/Aurora, AWS (multi-partition), Terraform, GitLab CI/CD, Keycloak We are standing up a small, elite development ...
Date Posted: 07/20/2026 Recommended
-
Salesforce Developer
Tulsa , Oklahoma
Job Title: Salesforce Developer Location: Remote Successful candidates must be able to provide proof of ability to work in the U.S. without sponsorship. This position is NOT OPEN to corp-to-corp, subcontractor or independent consulting arrangements. Re...
Date Posted: 08/18/2026 Recommended
-
I&C Engineer
Houston, TX
Job Title: I&C Engineer Location: Houston Type: Contract Compensation: $58.00 (DOE) Contractor Work Model: Onsite – onsite Hours: 40 hours/week Security Clearance: System One is seeking an I&C Engineer to work in Houston, TX. The Control Engineer is to...
Date Posted: 06/03/2026 Recommended
-
BFD Automation Technician 1st Shift
Tulsa, OK
Description: The Automation Technician provides industrial maintenance support to ensure the safe and effective operation of the production facility. This position serves as the technical expert in the maintenance work activities related to automation ...
Date Posted: 08/05/2026 Recommended
-
Mechanical Design Engineer
Tulsa, OK
Job Title: Mechanical Design Engineer Location: Tulsa, OK Type: Direct Hire Compensation: $100,000.00 - $125,000.00 Contractor Work Model: Onsite Hours: 40.0 Mechanical Design Engineer We are seeking a Mechanical Design Engineer to support product deve...
Date Posted: 08/05/2026 Recommended
-
I&C Engineer III
Perry, OH
Job Title: I&C Engineer Location: Perry, OH United States Type: Contract Hire Compensation: $50/hr plus or minus depending on experience Contractor Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Must be a US Citizen due to Nuclear restrict...
Date Posted: 07/08/2026 Recommended
-
Instrumentation Engineer III
Shippingport, PA
Job Title: Instrumentation Engineer Location: Shippingport, PA United States Type: Contract Hire Compensation: $50/hr plus or minus depending on experience Contractor Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Must be a US Citizen due ...
Date Posted: 07/16/2026 Recommended
-
Design Manager
Charlotte, North Carolina
Job Title: Design Manager Location: Charlotte, North Carolina Type: Direct Hire Compensation: $120,000.00 - $153,000.00 Work Model: Onsite Overview The IS Design Manager is responsible for the design production throughout the life cycle of a project fr...
Date Posted: 07/21/2026 Recommended
-
Principal Civil / Structural Engineer
Charlotte, NC
Job Title: Principal Civil / Structural Engineer Location: Charlotte, NC 28208 Type: Direct hire Compensation: $165,000 - $210,000/yr. Salary will be commensurate with experience. Work Model: On-Site Hours: 40 hours/weekly minimum Security Clearance: N...
Date Posted: 07/13/2026 Recommended
-
Design Manager
Coppell, TX
Job Title: Design Manager Location: Coppell, TX Type: Direct Hire Compensation: $120,000.00 - $153,000.00 Work Model: Onsite Overview The IS Design Manager is responsible for the design production throughout the life cycle of a project from development...
Date Posted: 07/21/2026 Recommended
-
Design Manager
Tempe, AZ
Job Title: Design Manager Location: Tempe, AZ Type: Direct Hire Compensation: $120,000.00 - $153,000.00 Work Model: Onsite Overview The IS Design Manager is responsible for the design production throughout the life cycle of a project from development h...
Date Posted: 07/21/2026 Recommended
-
Process Design Engineer - Vapor
Tulsa, OK
Job Title: Process Design Engineer Location: Tulsa, OK Work Model: Onsite Hours: Onsite 5 days M-F 8am-5pm Responsibilities Size and specify equipment such as pumps, blowers, compressors, pressure relief valves, and heat exchangers Develop P&ID’s, data...
Date Posted: 08/07/2026 Recommended
-
Design Manager
Glenolden, Pennsylvania
Job Title: Design Manager Location: Glenolden, Pennsylvania Type: Direct Hire Compensation: $120,000.00 - $153,000.00 Work Model: Onsite Overview The IS Design Manager is responsible for the design production throughout the life cycle of a project from...
Date Posted: 07/21/2026 Recommended
-
Design Manager
Salt Lake City, UT
Job Title: Design Manager Location: Salt Lake City, UT Type: Direct Hire Compensation: $120,000.00 - $153,000.00 Work Model: Onsite Overview The IS Design Manager is responsible for the design production throughout the life cycle of a project from deve...
Date Posted: 07/21/2026 Recommended
-
Design Manager
Little Rock, AR
Job Title: Design Manager Location: Little Rock, AR Type: Direct Hire Compensation: $120,000.00 - $153,000.00 Work Model: Onsite Overview The IS Design Manager is responsible for the design production throughout the life cycle of a project from develop...
Date Posted: 07/21/2026 Recommended
-
Design Manager
Westmont, IL
Job Title: Design Manager Location: Westmont, IL Type: Direct Hire Compensation: $130,000.00 - $167,000.00 Work Model: Onsite Overview The IS Design Manager is responsible for the design production throughout the life cycle of a project from developmen...
Date Posted: 07/21/2026 Recommended
-
Staff Engineering Technician
Denver, Colorado
Job Title: Staff Engineering Technician Location: Denver, Colorado Type: Contract Compensation: Contractor Work Model: Onsite – onsite Hours: 40.0 Security Clearance: US Citizen required Overview Leave placeholder text here for recruiter to input Respo...
Date Posted: 05/28/2026 Recommended
-
Staff Engineering Technician
Atlanta, Georgia
Job Title: Staff Engineering Technician Location: Overland Park, KS Type: Contract Compensation: Contractor Work Model: Onsite – onsite Hours: 40.0 Security Clearance: US Citizen required Overview Leave placeholder text here for recruiter to input Resp...
Date Posted: 05/28/2026 Recommended
-
Pipe Stress Engineer
Naperville, IL
Job Title: Pipe Stress Engineer Location: Remote Type: Contract Overview System One has an exciting opportunity for Pipe Stress Engineer to support commercial nuclear projects. Responsibilities Perform stress analyses for client projects involving modi...
Date Posted: 06/17/2026 Recommended
-
Project Manager (Utility Projects)
Denver, CO
Position: Project Manager (Engineering Projects) Location: Denver, Colorado 80223 Contract Duration: 12-Months Schedule: Standard business hours Hybrid Schedule: Monday & Friday: Remote/Tuesday–Thursday: Onsite Hourly Pay Rate: $52.50/hr. System One is...
Date Posted: 07/31/2026 Recommended
-
Manufacturing Automation/ Commissioning Engineer
York, PA
Job Title: Manufacturing Automation / Commissioning Engineer Location: York, PA Type: Direct Hire Contractor Work Model: Onsite Responsibilities Bridge the transition of robotic systems from power-up to operational readiness, ensuring systems meet perf...
Date Posted: 07/30/2026 Recommended