Lead Software Engineer
Reston, VA
Experience: 8
Education: BS
Category: Information Technology
Contractor Work Model: Hybrid
Brand: System One
Compensation Range: 88.64 Per Hour
Job ID: 380825
Date Posted: 09/23/2026
Shortcut: http://jobs.systemone.com/qeSOcH
Job Title: Lead Software Engineer
Location: Reston, VA
Type: Contract
Compensation: $88.64
Work Model: remote
Responsibilities
• Lead a team of software engineers in the design, development, and implementation of multiple applications. Performs and leads the detail technical design, coding, code review and testing of new applications and enhancements of existing applications. Serves as a subject matter expert for specified systems and their subsequent applications. Develop and/or analyze interface design documentation. Comply with hardware and software systems standards and procedures. Deliver large systems for tens of thousands of users. Ensures compliance to the dev/sec/ops practices and policies. Understanding of architectural practices and design.
• Identifies gaps in requirements and solves problems for the supporting staff. Identifies sequencing of services and technologies that are integrated in later phases of the project. Leads the evaluation of risk and opportunity impacts to existing or proposed projects/programs and implements risk mitigation actions. Develops ways to improve performance and increase system availability. Provides recommendations to infuse new technology. Compile, assess, and report data results from software testing and analysis.
• Supports the Project Manager as the technical team lead on the project. Estimates the technical costs of projects for clients and project managers. Confers with clients to identify requirements and determine desired outcomes to formulate the design of the system or offer alternatives. Demonstrated experience with front-end and back-end programing and integration frameworks and tools. Assist in the estimation of development of application features.
• Leads software design and development teams. Identifies, analyzes, defines, and coordinates user, customer, and stakeholder needs and translates them into technical requirements. Manages technical resources (hardware, software, licenses, and services). Plans and leads transformation initiatives to new software architectures. Extends open-source libraries and systems as necessary to meet the needs of the team. Plays a crucial role in product scoping and roadmap / architecture discussions. Continually evaluate emerging technologies to identify opportunities, trends, and best practices. Ensure code quality, deployment standards and practices. Mentors junior developers.
Requirements
• Bachelor's Degree in Information Technology or Computer Science.
• 8 years of experience in software design and development, software test and evaluation, and software requirements management.
• Works closely with Architects, Product Owners, Scrum Masters, and Value Stream Managers to provide insight into delivering business value and meeting objectives.
• Decomposes functional and technical requirements into project activities and tasks and provides conceptual design, prototype, and test cycles appropriate to a chosen technical solution.
• Identifies technical risks and develops mitigation strategies; introduces and recommends industry best practices and standards for the project.
• Evaluates and assists in the selection and procurement of hardware and software technologies and serves as a mentor for junior developers.
• Works with stakeholders as well as technical and analytical counterparts to define constraints and develop requirements and concept of operations documentation.
• Knowledge of cloud technologies (e.g., AWS, Azure).
• Advanced knowledge of database technologies (e.g., cloud, SQL, Oracle, Mongo DB, PostgreSQL).
• Fundamental knowledge of software engineers’ best practices, agile methodologies, CI/CD pipelines.
• Knowledge of test-first practices including Test-Driven Development (TDD) and Behavior-Driven Development (BDD).
• Strong experience with Deployment/Continuous Integration/Continuous Testing/Continuous Delivery processes and tools, with expertise in CI/CD frameworks.
• Experience deploying global applications and managing configurations.
• Reviewing work of other developers and providing feedback.
• Ability to communicate technical requirements to all levels of expertise.
• Proficient in establishing and maintaining good working relationships.
• Knowledge and understanding of the software development life cycle (SDLC).
• Proficient with integrating complex and/or existing systems.
• Knowledge of programming languages (e.g., JavaScript, C, Python).
• Excellent communication skills both written and verbal.
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.
#M-PJ1
#LI-PJ1
Ref: #851-Rockville-S1
-
Full Stack Developer
Merrifield, VA
Full Stack Developer Location: Vienna VA - Hybrid - 1-2 days on site Pay Rate: Open to Both C2C and W2 options Position Type: Multiyear Contract Basic Purpose To support software development organizational initiatives by designing and implementing new ...
Date Posted: 08/13/2026 Recommended
-
(v) Software Engineer – FACETS Extensions / Application Development
Baltimore, Maryland
Software Engineer – FACETS Extensions / Application Development Location: Baltimore, MD (DMV Area – Baltimore, MD or Washington, DC) Type: Contract-to-Hire Work Model: Hybrid (Onsite & Remote) Hours: 40 Hours/Week (EST) Overview Our Client is embarking...
Date Posted: 07/20/2026 Recommended
-
Pega Developer
Merrifield, VA
Job Title: Pega Developer Location: Vienna, VA Type: Contract Work Model: Hybrid – onsite and remote Responsibilities Identify business requirements (e.g., needs, objectives, functions, features, input and output) and translate into delivered technical...
Date Posted: 08/12/2026 Recommended
-
Lead Test Engineer - Senior - 100% remote
Merrifield, VA
Title: Lead Test Engineer Location: 100% Remote Pay Rate: Open to Both W2 and established 1099's Position Type: Contract, long term expected Candidates MUST LIVE in the United States and be able to pass both a credit and criminal background check. This...
Date Posted: 09/17/2026 Recommended
-
Full Stack C/C++ Developer - Aerospace & Defense Systems
Huntsville, AL
Job Title: Full Stack C/C++ Developer – Aerospace & Defense Systems Location: Huntsville, AL (Onsite) Type: Contract-to-Hire Pay (W2): $77-82/HR Clearance: Active Secret clearance (or ability to obtain) Overview Join a team building and supporting miss...
Date Posted: 08/31/2026 Recommended
-
Oracle Integration Developer
Louisville, KY
Job Title: Oracle Integration Developer Location: Louisville, KY Type: Direct Hire/Perm Work Model: Remote – offsite Hours: 40.0 hours/week Overview System One is seeking an Oracle Integration Developer for a Direct Hire/Perm opportunity to work fully ...
Date Posted: 09/24/2026 Recommended
-
Senior Software Engineer C#
Merrifield, Virginia
Senior Software Engineer C/C++ or C# Software Engineer Direct-Hire Location: Merrifield, VA – 4 days on-site/ 1 day remote Annual Salary Range: $105,000 to $120,000 plus benefits Federal End Customer: US Citizenship, eligibility for a Public Trust clea...
Date Posted: 09/08/2026 Recommended
-
Mid Level Software Engineer C#
Merrifield, Virginia
Mid-Level Software Engineer C/C++ or C# Software Engineer Direct-Hire Location: Merrifield, VA – 4 days on-site/ 1 day remote Annual Salary Range: $95,000 to $105,000 plus benefits Federal End Customer: US Citizenship, eligibility for a Public Trust cl...
Date Posted: 09/08/2026 Recommended
-
Full Stack Developer
Vienna, VA
Job Title: Full Stack Developer Location: Hybrid Work Model Reporting to Vienna, VA or Pensacola, FL Pay Rate: Open to Both C2C and W2 options Position Type: Multiyear Contract Description Analyze business needs to develop and implement solutions that ...
Date Posted: 07/13/2026 Recommended
-
AWS Python Developer
Lafayette, Louisiana
Job Title: AWS Python Developer Location: Lafayette, Louisiana, United States Type: Direct Hire Work Model: Hybrid – onsite and remote Overview System One is seeking an experienced AWS Python Developer to support the development and modernization of cl...
Date Posted: 09/17/2026 Recommended
-
SEIT TIDES - Software Engineer
Scottsdale, Arizona
Job Title: SEIT TIDES Software Engineer Location: Scottsdale, AZ Type: 2 + year contract w/chance of extensions and/or perm rollover Work Model: candidates must be local and willing to work onsite. There is some remote flex depending on manager’s discr...
Date Posted: 09/16/2026 Recommended
-
Mid - Senior Level Software Development Engineer in Test
Merrifield, VA
Job Title: Mid - Senior Level Software Development Engineer in Test Location: Vienna, VA Work Model: Hybrid – 3 days/week onsite, rest remote Type: Multiyear Contract Description: Top Skills: Full Stack SDET (Front-End and Back-End Automation Test Exp ...
Date Posted: 08/20/2026 Recommended
-
Legacy .NET Developer
Vienna, VA
Job Title: Full Stack Developer Location: Vienna, VA Type: Contract Compensation: Open to Both C2C and W2 options Work Model: Hybrid – onsite and remote Responsibilities • Identify business requirements (e.g., needs, objectives, functions, features, in...
Date Posted: 09/01/2026 Recommended
-
Software Developer
McLean, VA
Software Developer Practice: Software Development & Support / Digital Company: Guidehouse Location: Remote Security and Work Authorization Requirements • Must be able to obtain and maintain a Federal or Department of Defense Public Trust. • Candidates ...
Date Posted: 08/25/2026 Recommended
-
Senior Java Full Stack Engineer (AWS Cloud Migration)
Reston, Virginia
Senior Java Full Stack Engineer (AWS Cloud Migration) Location: Reston, VA (Hybrid) Type: Contract through December 2026 (potential extension) Schedule: 40 hours/week Local Candidates: DMV area only. Must be available for onsite meetings in Reston appr...
Date Posted: 09/03/2026 Recommended
-
UI/UX Developer
McLean, VA
Job Title: UI/UX Developer Location: McLean, VA – can work Offsite Type: Contract To Hire Compensation: Not specified Work Model: REMOTE Critical Competencies A critical competency for this role is the ability to leverage agentic AI development tools (...
Date Posted: 09/02/2026 Recommended
-
Project Engineer III
Ennis, TX
Job Title: Project Engineer III Location: Ennis, TX Type: Contract Compensation: $55.00/hr. to $65.00/hr. Work Model: Onsite Hours: 40 per week Responsibilities: Lead and execute capital projects (modifications, improvements, new equipment) across the ...
Date Posted: 09/04/2026 Recommended
-
ForgeRock Developer
Pittsburgh , Pennsylvania
Role: ForgeRock Developer Location: ForgeRock Developer with a passion for solving business problems to join our team in Salt Lake City, UT Your future duties and responsibilities How you'll make an impact . Provide support and maintenance of various s...
Date Posted: 08/12/2026 Recommended
-
Project Engineer III
Savannah, GA
Job Title: Project Engineer III Location: Savannah, GA Type: Contract Compensation: $50.00 - $60.00/hr. Work Model: Onsite Hours: 40-50 hours Schedule: 8am-5pm Overview: Our client is looking for a Project Engineer who will be responsible for maintaini...
Date Posted: 08/05/2026 Recommended
-
Startup Manager
Houston, TX
Job Title: Deputy Commissioning Manager CQV Location: Houston, TX Type: Contract Compensation: DOE Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Not specified System One is seeking a high-caliber Deputy Commissioning Manager to ensure sta...
Date Posted: 09/24/2026 Recommended
-
I&C Design Engineer
Bellevue, WA
Job Title: Design Engineer Type: Contract Compensation: $52 - $85 hourly Contractor Work Model: Remote Overview: We are seeking a talented and experienced Design Engineer specializing in Instrumentation and Control (I&C) for a contract opportunity with...
Date Posted: 09/03/2026 Recommended
-
Jr. Software Engineer C/C++
Huntsville, AL
LOCATION: Huntsville, AL (100% onsite) TYPE: Contract-to-hire | 40 hrs/week COMPENSATION: $62-67/hr (W2) CLEARANCE: Active Secret clearance (or ability to obtain) OVERVIEW System One is hiring a Software Engineer with strong C/C++ experience to support...
Date Posted: 09/01/2026 Recommended
-
ES&H Technical Analyst
Winnemucca, NV
Job Title: ES& H Technical Analyst Location: Winnemucca, NV Type: 12 month Contract Compensation: $68.80-89.30/hr Per Diem 3 Weeks on, 1 Week Off EWW - 57 hour work week Mobilization/Demobilization Covered Trips Home Covered Responsibilities Provides a...
Date Posted: 09/23/2026 Recommended
-
Senior Mechanical Engineer
Salt lake city, Utah
Job Title: Senior Mechanical Engineer Location: Salt Lake City, Utah Type: Contract To Hire Compensation: $67.30 - $79.32 per hour Work Model: Hybrid – onsite and remote Hours: 40.0 Responsibilities Lead the mechanical design and technical execution of...
Date Posted: 07/08/2026 Recommended
-
Mid Backend Java Developer
Merrifield, VA
Mid Backend Java Developer Location: Vienna, VA (hybrid) Pay Rate: Open to Both C2C and W2 options Position Type: Contract Description: We're seeking a curious, technically minded professional who loves solving complex problems, understands how great s...
Date Posted: 09/16/2026 Recommended
-
Sr Solutions Architect (Workday HCM, Time Tracking and Absence)
Norcross, GA
Job Title: Sr Solutions Architect (Workday HCM, Time Tracking and Responsibilities • Act as a trusted advisor to HR, Payroll, IT and business leaders, lead the end-to-end solution architecture for Workday HCM, Time Tracking, and Absence modules • Desig...
Date Posted: 06/29/2026 Recommended
-
Senior Mechanical Design Engineer
Bellevue, Washington
Senior Mechanical Design Engineer (Core Components) Location: Bellevue, WA Job Type: Contract - Remote Schedule: 40 hours/week System One is seeking a highly motivated Senior Mechanical Design Engineer (Core Components) to support the design and develo...
Date Posted: 09/10/2026 Recommended
-
Lead .Net Developer (Secret clearance)
Reston, VA
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 g...
Date Posted: 08/28/2026 Recommended
-
Information Systems Security Engineer (ISSE)
Hanscom AFB,, MA
Job Title: Information Systems Security Engineer (ISSE) Location: Hanscom AFB, MA Type: Contract To Hire Compensation: $180,000.00 - $195,000.00 Work Model: Onsite – onsite Hours: 40 hrs a week. Security Clearance: Must have active Top Secret clearance...
Date Posted: 09/23/2026 Recommended
-
Senior Software Engineer
Weston, Florida
Job Title: Senior Software Engineer Location: Weston, FL Type: Contract Compensation: $45-$50 Work Model: Onsite Hours: 40.0 Overview Leave medical technologies company looking for an experienced Senior Software Engineer. Ideal candidates should have a...
Date Posted: 08/28/2026 Recommended