Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Full Stack Software Engineer (TS/SCI w/ Poly)

$90k - $185k
Full-time

Sixgen

SIXGEN’s mission is to deliver agile, mission-ready cybersecurity solutions that empower government and critical infrastructure organizations to stay ahead of advanced cyber threats. We combine innovation, deep expertise, and cutting-edge capabilities to uncover vulnerabilities, protect vital systems, and ensure operational superiority in an ever-evolving digital landscape.


  • Position: Software Engineer

  • Job Type: Full Time

  • Location:  Onsite, Ft-Meade, MD

  • Clearance Requirements:  TS/SCI w/ Poly

  • Travel: None

ABOUT THE TEAM

SIXGEN supports missions by serving government and commercial organizations as they overcome global cybersecurity challenges. In this position, you’ll provide meaningful support to our customer’s missions and operations. You’ll work alongside a team of highly skilled operators who are dedicated to using innovative processes, tools, and techniques to get things done. 

WHAT YOU’LL DO


  • Design, develop, test, and deploy software applications and systems in support of government and customer missions.
    Collaborate with systems engineers, analysts, and end users to understand technical requirements and translate them into software solutions.

  • Write clean, efficient, and maintainable code using modern programming languages and development practices.

  • Support integration, debugging, and testing activities in both lab and operational environments.

  • Ensure software meets security, performance, and reliability standards, in compliance with government policies and frameworks.

REQUIRED QUALIFICATIONS


  • US Citizen with the ability to obtain a US Government Security clearance up to the Secret or TS level 

  • Proficiency in one or more programming languages such as Python, C++, Java, or C.

  • Experience developing software in Linux-based environments.
    Familiarity with secure coding practices and software lifecycle principles.

  • Strong problem-solving skills and the ability to work independently or as part of a collaborative team.

  • Experience supporting DoD, IC, or federal government software development projects.

  • Knowledge of DevSecOps, containerization, or distributed systems.
    Familiarity with Agile methodologies and tools like Git, Jira, and CI/CD pipelines.

COMPENSATION & BENEFITS


$90,000 - $185,000 USD

The salary range for this role is an estimate based on a wide range of compensation factors, inclusive of base salary only. Actual salary offer may vary based on (but not limited to) work experience, education and/or training, critical skills, and/or business considerations. The final salary offer will be determined after a thorough review of the candidate's background and alignment with the role. Additionally, SIXGEN offers top-tier benefits for full-time employees, including:


  • Employer-paid health insurance premiums (medical, dental, vision) for you and your family 

  • Employer-paid short/long term disability insurance and basic life/AD&D insurance

  • 401K with a 4% employer contribution

  • Professional development reimbursement options available (training, certification, education, etc)​

  • Flexible and remote work policies for most positions

  • Flexible PTO and holiday schedule

OUR COMMITMENT


SIXGEN is an Equal Opportunity Employer. We ensure that all applicants are considered for employment without regard to race, color, religion, sexual orientation, gender identity, national origin, disability, age, marital status, ancestry, projected veteran status, or any other protected group or class.

We are committed to fostering an inclusive culture that values diversity in our people, reflecting the communities we serve and our customer base. We strive to attract and retain a diverse talent pool and create an environment where everyone is empowered to be their authentic selves at work.

Vacancy posted 16 hours ago
Similar jobs that could be interesting for youBased on the Full Stack Software Engineer (TS/SCI w/ Poly) in Remote vacancy
  • $112k - $179k

     ...Cloud Software Engineer 2 - TS/SCI w/Poly Job Locations US-MD-Annapolis Junction Requisition ID 2026-165692 Position Category...  .... What You'll Do Develop, test, and maintain full-stack cloud-based applications Support integration,... 
    Suggested
    Contract work
    For contractors
    Remote work
    Shift work

    Peraton

    Annapolis Junction, MD
    2 days ago
  • $100k - $131.5k

     ...Job Description Job Description BCT LLC is seeking a Software Engineer (Level 0). The ideal candidate must possess an active TS/SCI w/Poly. This position is located in Annapolis Junction, Maryland and some telework is authorized. A career at BCT LLC says you want... 
    Suggested
    Work experience placement
    Local area
    Remote work
    Home office

    BCT LLC

    Annapolis Junction, MD
    3 days ago
  • $176k - $282k

     ...Candidate will become a member of a mature software development effort using Java as the...  ...applications using the Spring Framework.TS/SCI clearance with polygraph clearance is required...  ...ID: 2026-170074Position Category: Information TechnologyClearance: Top Secret/SCI w/Poly
    Suggested
    Contract work
    For contractors
    Remote work
    Flexible hours
    Shift work

    Peraton Corporation

    Annapolis Junction, MD
    6 days ago
  •  ...Description *Active TS/SCI w/ FS Poly required prior to application The Front-End (Angular) Software Engineer will design and develop complex new software products, or make significant enhancements to existing software. The ideal candidate is a hands-on developer... 
    Suggested
    Full time

    Leading Path Consulting

    Remote
    16 hours ago
  •  ...Job Description Job Description Software Engineer - Jira/Confluence - 7+ yrs of Experience - TS/SCI w/Poly clearance is required Halogen Engineering is seeking a Software Engineer who will be responsible for designing, developing, and maintaining Tools and Services... 
    Suggested
    Contract work
    Remote work
    Shift work

    Halogen Engineering Group, Inc

    Maryland
    24 days ago
  • $25k

     ...Signals Software Engineer – 7+ yrs of Experience - TS/SCI w/Poly Required Halogen Engineering Group is looking for a Signals Software Engineer to develop, maintain, and enhance signal processing software (e.g. detectors, demodulators, protocol processors). Works... 
    Full time
    Contract work
    Temporary work
    Remote work
    Shift work

    Halogen Engineering Group, Inc

    Remote
    16 hours ago
  • $25k

     ...Software Engineer - Spring Boot Framework - 12+ yrs of Experience - TS/SCI w/Poly Required Halogen Engineering Group is looking for a Software Engineer to join our team who has experience with Spring Boot framework development experience. Location: Annapolis... 
    Full time
    Contract work
    Temporary work
    Remote work
    Shift work

    Halogen Engineering Group, Inc

    United States
    16 hours ago
  • $25k

     ...Software Engineer \- Offensive\/Defensive Cyber Operations \- 7+ yrs of Experience \- TS\/SCI w\/Poly Required \\\ \ \ Halogen Engineering...  ...customers directly performing full cycle system engineering,...  ...debugging, and protocol stacks \\\\\\\\ Experience... 
    Full time
    Contract work
    Temporary work
    Work experience placement
    Remote work
    Shift work

    Halogen Engineering Group

    Linthicum, MD
    16 hours ago
  • $25k

     ...Software Engineer – Algorithm Development- 7+ yrs of Experience - TS/SCI w/Poly Required Halogen Engineering Group is looking for a Software Engineer who  develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive analytics... 
    Full time
    Contract work
    Temporary work
    Remote work
    Shift work

    Halogen Engineering Group, Inc

    Remote
    16 hours ago
  • $250k - $300k

     ...Job Type: Full-time Location: Annapolis Junction, MD. Clearance Requirements: TS/SCI w/ Poly Years of Experience: 7+ years Team Lead...  ...in our field. As a CNO Engineer, you’ll work in a unique position...  ...at the intersection of software development, binary and network... 
    Full time
    Immediate start
    Work from home
    Flexible hours

    Sixgen

    Remote
    16 hours ago
  • $25k

     ...CNO Developer - Firmware - 10+ yrs of Experience - TS/SCI w/Poly Required Halogen Engineering Group is looking for a CNO Developer that is experienced...  ...degree ~ The years of experience must be in software development or an extremely related discipline. ~ This... 
    Contract work
    Temporary work
    Remote work
    Shift work

    Halogen Engineering Group, Inc

    Maryland, MD
    25 days ago
  • $25k

     ...Description Job Description Software Integration Engineer - HPC - 10+ yrs of Experience - TS/SCI w/Poly Clearance Halogen...  ...troubleshooting of the HPC software stack and related system issues....  ...Generate documentation for the full software stack. Update software... 
    Full time
    Contract work
    Remote work
    Shift work

    Halogen Engineering Group, Inc

    Annapolis Junction, MD
    24 days ago
  •  ...Technical Training, Certification(s) or Degree ● Required Experience: 5+ years of related experience ● Security Clearance Level: TS/SCI w/Poly ● Required Skills and Abilities: Proven experience with Azure cloud services and migration projects. Strong proficiency... 

    General Dynamics Information Technology

    Annapolis Junction, MD
    17 days ago
  •  ...Full Stack Software Developer / SME Falls Technology LLC Location: Chantilly, VA Clearance: Active TS/SCI with Polygraph required Falls Technology is looking for an experienced Full Stack Software Developer / SME to join our team supporting a mission-focused... 
    Full time

    Falls Technology Llc

    Remote
    16 hours ago
  •  ...Government Security Clearance at the TS/SCI level. We're hiring a solution driven Software Engineer to work onsite with U.S....  .... Work with cloud tech stacks to perform data extraction, manipulation...  ...users Ability to work full time onsite Minimum... 
    Full time
    Remote work
    Flexible hours

    Vantor

    Springfield, VA
    4 hours ago
  •  ...Description Data Engineer Chantilly, Va *Active TS/SCI w/ FSP required prior to application The Software Engineer will design and develop complex new software products, or make significant enhancements to existing software. The candidate must have strong,... 
    Full time
    Work at office

    Leading Path Consulting

    Remote
    16 hours ago
  •  ...Transform technology into opportunity as a Software Quality Assurance Specialist/...  ...related field Security Clearance Level: TS/SCI + Poly. Location: Herndon, VA US Citizenship...  ...Citizenship Required GDIT IS YOUR PLACE: ~ Full-flex work week to own your priorities at... 
    Flexible hours

    General Dynamics Information Technology

    Herndon, VA
    a month ago
  • $25k

     ...APIs - 8+ yrs of Experience (PARTIAL TELEWORK) - TS/SCI w/Poly clearance is required - BT Halogen Engineering Group is looking for a Web Developer to join our...  ...requirements. Requirements Software Integration (new and existing systems) Troubleshooting... 
    16 hours
    Full time
    Contract work
    Temporary work
    Remote work
    Shift work

    Halogen Engineering Group, Inc

    United States
    16 hours ago
  •  ...Job Description Job Description TITLE: Sr. Software Engineer LOCATION: Herndon, VA CLEARANCE REQUIRED: Active TS/SCI with CI Polygraph EMPLOYMENT TYPE: Full-Time, Onsite   POSITION SUMMARY Modern Government Solutions (MGS) is seeking a Sr. Software... 
    Full time
    Remote work

    Modern Government Solutions

    Herndon, VA
    4 days ago
  •  ...Description Job Description Full Stack Developer Reston, VA Active TS/SCI with Poly Clearance required   @...  ...proudly employs a sleek and modern software development team building mission...  ...This role requires a hands-on engineer with strong full-stack development... 
    Remote work

    @Orchard

    Reston, VA
    25 days ago
  • $125k - $215k

     ...Description A day in the life: As a Full-Stack Software Engineer, you'll support a large mission focused team of software, systems and...  ...developing 508 compliant applications ~ An active US Government TS/SCI security clearance with polygraph The total package:... 
    Full time
    Summer holiday
    Immediate start

    Red Alpha

    Remote
    16 hours ago
  •  ...TENICA is looking to hire a software systems engineer with a TS/SCI CI poly. Location: Springfield, VA 50% Telework • Experience developing C++ , Python and CUDA kernels extensions for custom network components and evaluation metrics  • Experience creating custom... 
    Remote work

    TENICA Global Solutions

    Springfield, VA
    2 days ago
  • $104k - $166k

    ResponsibilitiesThe team is seeking a Cloud Software Engineer to support our Cyber Mission...  ...engineers with an active TS/SCI clearance and polygraph who...  ...QualificationsExposure to full-stack development (Java and/or...  ...: Information TechnologyClearance: Top Secret/SCI w/Poly
    Contract work
    For contractors
    Remote work
    Shift work

    Peraton Corporation

    Annapolis Junction, MD
    2 days ago
  • $25k

     ...Job Description Job Description Database Engineer - Oracle/Linux/Bash - 10+ yrs of Experience  - TS/SCI with Poly Required Halogen Engineering Group is looking...  .../or Object-Oriented databases, database parser software, and database loading software. Projects long-... 
    Contract work
    Temporary work
    Remote work
    Shift work

    Halogen Engineering Group, Inc

    Annapolis Junction, MD
    15 days ago
  •  ...superiority in an ever-evolving digital landscape. POSITION OVERVIEW Position: Software Engineer Job Type: Full-time Location: Ft. Meade, MD Clearance Requirements: Active TS/SCI with Polygraph required Work Schedule: 5 days per week onsite Travel... 
    Full time
    Temporary work
    Remote work
    Flexible hours

    Sixgen

    Remote
    16 hours ago
  •  ...Developer Hybrid – Arlington, VA U.S. Citizenship and TS/SCI and CI poly required   @Orchard is retained by a top geospatial technology...  ...responsible for the design, development, and maintenance of software applications and APIs using Java and Python programming... 
    Remote work

    @Orchard

    Arlington, VA
    4 days ago
  • $85k - $115k

     ...Currently Possess: Top Secret SCI + Polygraph Clearance...  ...None Job Family: Software Engineering Job Qualifications: Skills...  ...position requires an active TS/SCI with Polygraph....  ...balance, GDIT offers employees full flex work weeks where possible... 
    Temporary work
    For contractors
    Immediate start
    Remote work
    Worldwide
    Flexible hours

    General Dynamics Information Technology

    Annapolis, MD
    3 days ago
  •  ...mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber...  ...candidate must be a US Citizen and requires an active/current TS/SCI with Polygraph clearance.   Equal Opportunity Employer... 
    Full time

    Gci Careers

    Remote
    16 hours ago
  • AI/ML Engineer (TS/SCI with CI Poly) {S} King of Prussia, PA Full-time Onsite 2+ years exp ARKA Group L.P. is an advanced technologies company serving the U.S....  ...Communications Hardware Information Technology Manufacturing Software Communication Hardware Optical Communication No H1... 
    Full time
    Temporary work
    H1b
    Remote work

    Jobright.ai

    King of Prussia, PA
    5 days ago
  •  ...Data Scientist / Software Engineer – Expert Falls Technology LLC Location: McLean, VA Clearance: Active TS/SCI with Polygraph required Falls Technology is looking for an experienced Data Scientist / Software Engineer to join our team supporting a mission... 
    Full time

    Falls Technology Llc

    Remote
    16 hours ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Full Stack Software Engineer (TS/SCI w/ Poly). Be the first to apply!