Principal Software Engineer IV (TS/SCI + Poly)
Aperio Global
How We're Different We believe the highest-impact work in national security and technology is a team sport. At Aperio Global, we operate as a single, cohesive force aligned on a handful of mission-critical efforts where our work truly moves the needle. We don't chase small wins. We solve for next. We view the intersection of cybersecurity, artificial intelligence, and data analytics as an empirical discipline as rigorous and consequential as any field in science or engineering. That means we bring intellectual honesty, accountability, and transparency to every problem we take on. Our team includes tech innovators, Intelligence Community veterans, and security professionals who know that the best solutions come from diverse minds working toward a common mission. We value our people, those working quietly behind the scenes, doing the hard work that keeps our nation secure. The best way to understand how we think is to see what we've built. From full-spectrum cyber operations and de-biased AI platforms to quantum networking and cloud-native software systems, our work speaks for itself. Come solve with us We offer competitive compensation and a comprehensive benefits package — including medical, dental, and vision coverage, a 401(k) retirement plan, life insurance, generous paid time off, short and long-term disability, professional development, and much more. We invest in our people because they are our most important asset — and because the mission demands the best. Aperio Global is seeking an experienced and talented Senior Software Developer to join an existing team that develops and manages software products and tools integral to discovering new mobile data related to the mission. This role includes application development in support of the mission, and managing the product's infrastructure and devops environment. You will be working in a highly collaborative, integrated environment. Job Responsibilities/Qualifications:
- Mission Focus: Perform security analysis of web services on Android and OSX platforms to develop automation tools to scrape data and interact with public and private APIs Technical Proficiency: Strong experience with Java, Python, JavaScript, and shell scripting
- Qualifications: Bachelor's degree plus 11-years of relevant experience or equivalent.
- Security Clearance: Active TS/SCI with Polygraph required.
NICE TO HAVE:
Additional experience with Android development, browser automation with Selenium, reverse engineering; familiarity with AI Salary Range: 207k- 227k Benefits At Aperio Global, we understand the value of investing in our most important asset—our employees. That's why we have crafted a comprehensive benefits package designed to help you make the best decision for yourself, your family and your lifestyle. For additional details, contact our talent acquisition team. Health Care Plan (Medical, Dental & Vision) Retirement Plan (401k, IRA) with 100% employer match up to 6% Life Insurance (Basic, Voluntary & AD&D) Paid Time Off (Vacation, Sick & Public Holidays) Short Term & Long Term Disability Professional Development (and much more) Aperio Global is an equal opportunity employer. We are committed to building an inclusive workforce where all employees and applicants are treated with respect and fairness. Employment decisions are based solely on qualifications, merit, and business needs — never on race, color, religion, sex, national origin, age, disability, genetic information, military or veteran status, pregnancy/childbirth, sexual orientation, gender identity, marital status, ethnicity, or any other characteristic protected by applicable federal, state, or local law.- ...Principal Software Engineer IV (TS/SCI + Poly) Fort Meade, MD We believe the highest-impact work in national security and technology is a team sport. At Aperio Global, we operate as a single, cohesive force aligned on a handful of mission-critical efforts where our...SuggestedTemporary workLocal area
$135k - $216k
...Principal Software Engineer TS/SCI w Poly Job Locations US-MD-Annapolis Junction Requisition ID 2026-166526 Position Category Information Technology Clearance Top Secret/SCI w/Poly Responsibilities Job Title: Principal...SuggestedContract workShift work$212.5k - $287.5k
...Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be... ...: None Job Family: Software Engineering Job Qualifications: Skills:... ...experience • Security clearance level: TS/SCI w/Poly required • US citizenship required...SuggestedContract workTemporary workImmediate startRemote workWorldwideFlexible hours- ...Software Engineer Transform technology into opportunity as a Software Engineer at GDIT. Shape what's next for mission-critical government... ...15+ years of related experience Security clearance level: TS/SCI w/Poly required US citizenship required Role requirements:...SuggestedContract work
- ...Technologies in Annapolis Junction, Maryland is seeking a Principal AWS Software Engineer for a full-time position supporting a U.S. Government... ...possess extensive software engineering experience and a valid TS/SCI with Polygraph clearance. An attractive salary package...SuggestedFull timeRemote work
$200k - $280k
GliaCell Technologies is looking for a Principal Software Engineer in Annapolis Junction, Maryland, to provide technical expertise on a U.S. Government... ...engineering experience and an active or re-installable TS/SCI with Polygraph security clearance. The position offers a...Contract workWork from home$170k - $230k
...Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must... ...: None Job Family: Software Engineering Job Qualifications: Skills:... ...Security Clearance Level: Active TS/SCI with CI Poly Experience: 10+ years of experience...Temporary workImmediate startRemote workWorldwideFlexible hours$3,900 per month
...Resource Experts, LLC is looking for an experienced Software Engineers to join their rapidly growing team! The... ...best practices. Qualifications An active TS/SCI with polygraph is required. Last Poly within past 7 years. Level 2: BS + 14 years...Hourly payContract workTemporary workWork experience placementLocal areaFlexible hours- ...and defense contractors. We provide talented and exceptionally qualified IT, architectural, system, and software engineering personnel. Requires TS/SCI with Poly Clearance The Software Engineer develops, maintains, and enhances complex and diverse software systems...Full timeFor contractorsLocal area
- ...Senior Software Engineer TS SCI w/ POLY Fort Meade, MD How We're Different We believe the highest-impact work in national security and technology is a team sport. At Aperio Global, we operate as a single, cohesive force aligned on a handful of mission-critical...Temporary workLocal area
$146k - $234k
...Senior Software Engineer - TS/SCI w/Poly Job Locations US-MD-Annapolis Junction Requisition ID 2025-159560 Position Category Engineering Clearance Top Secret/SCI w/Poly Responsibilities The team is seeking a highly...Contract workShift work- ...and defense contractors. We provide talented and exceptionally qualified IT, architectural, system, and software engineering personnel. Requires TS/SCI with Poly Clearance The Software Engineer develops, maintains, and enhances complex and diverse software systems...Full timeFor contractorsWork experience placementLocal area
$165k - $175k
...Software Engineer II Salary: $165K-175K Clearance: (TS/SCI FS Poly) Employment Type: Full-Time Relocation Assistance: Available We are representing a Software Engineer II opportunity supporting complex, enterprise-scale systems within a high-security environment....Full timeRelocation package- ...Description Software Engineer Levels 1 - 3 - TS/SCI/FS Poly clearance only Altamira Technologies has a long and successful history of providing innovative solutions throughout the U.S. National Security community. Headquartered in McLean, Virginia, Altamira serves...Worldwide
- ...Software Engineer SWE2 Clearance: TS/SCI FS Poly Location: Annapolis Junction The Software Engineer develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive analytics, novel algorithm development, manipulation of extremely...
$176k - $282k
...Sr. Software Engineer, TS/SCI w/poly Job Locations US-MD-Laurel Requisition ID 2026-166340 Position Category Information Technology Clearance Top Secret/SCI w/Poly Responsibilities Design and Development Design...Contract workShift work- ...Software Engineer L2 Location: Annapolis Junction Clearance: Active TS/SCI w/ FS Poly required We're seeking a Software Engineer to support mission-critical systems in a fast-paced, high-impact environment. This role involves full-stack development, automation...
$118k - $131k
...Software Engineer Level 0 Company: Client of Staffed4U Location: Annapolis Junction, MD Position Type: Full-Time... ...employer 401(k) contribution Clearance Requirement: TS/SCI Poly Primary Skill Requirement: Java development experience...Full timeTemporary workFlexible hours$72.7k - $149.2k
...Job Title: Software Engineer 1 (TS/SCI w/Poly) Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None * *...Full timeContract workWork experience placementLocal areaImmediate startFlexible hours$250k - $300k
...CNO Software Engineer (TS/SCI w/ Poly) Annapolis Junction, MD. 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...Full timeTemporary workRemote workFlexible hours- ...growing technology firm in Maryland is seeking a Level 0 Software Engineer to contribute to the development of complex software... ...supports telework up to 2-3 days a week and requires a TS/SCI clearance with Poly. Join a family-oriented team making a difference today!...Remote job2 days per week3 days per week
$140k - $190k
...DevOps Engineer Serves as a DevOps Engineer to support the acquisition of mission... ...Contribute to the development of: Custom software components Integration of open source... ...AWS Clearance: Active TS/SCI with CI Poly Job Type: Full-time Salary Range: $140...Full time$176k - $282k
...Cyber Software Engineer-TS/SCI w/Poly Job Locations US-MD-Laurel Requisition ID 2026-167066 Position Category Information Technology Clearance Top Secret/SCI w/Poly Responsibilities We are seeking a highly skilled...Contract workShift work$94.4k - $198.2k
...Job Title: DevOps Engineer-TS/SCI with Poly Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None The Opportunity:...Full timeContract workWork experience placementImmediate startFlexible hours$100k - $200k
Bct Llc in Maryland is looking for Software Engineers with an active TS/SCI with POLY clearance. Candidates should have experience in software engineering, ideally with a background in Policy or SIGINT. Responsibilities include the development, enhancement, and maintenance...- 6AM City, LLC in Maryland is looking for a skilled Software Engineer to develop, maintain, and enhance complex software systems. The ideal candidate must possess a TS/SCI with FS Poly and have extensive JAVA programming experience. Responsibilities include analyzing user...
$175k - $185k
Software Engineer III Location: Columbia, MD Employment Type: Full-Time Salary: $175,000-185,000 Clearance: (TS/SCI FS Poly Required) Relocation Assistance: Available Position Overview This role focuses on deriving software design and performance requirements from complex...Full timeRelocation package$25k
Software Engineer - Splunk/Elastic Stack- 7+ yrs of Experience - TS/SCI w/Poly clearance is required Halogen Engineering Group is looking for a Software Engineer who will be part of an overarching project responsible for developing and maintaining system management infrastructure...Contract workTemporary workRemote workShift work- A technology leader in defense projects is seeking a Software Engineer in Annapolis, Maryland. The role requires a Bachelor's degree and... ...coverage, and retirement contributions. Applicants must have TS/SCI with Poly Clearance. #J-18808-Ljbffr CyberTrend Engineering LLC
$230k
Software Engineer (AWS/HCI) - ( TS/SCI FS Poly Required) Senior Software Engineer (20+ Years Experience Required) Location: Columbia, MD Salary: $230,000 Clearance Required: Active TS/SCI with Full Scope Polygraph Employment Type: Full-Time Position Overview This...Full time
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Principal Software Engineer IV (TS/SCI + Poly). Be the first to apply!
- principal software engineer Maryland
- senior principal cloud computing engineer Maryland
- principal cloud computing engineer Maryland
- principal Maryland
- javascript software engineer Maryland
- senior c# .net software developer Maryland
- ultimate software Maryland
- software technical support engineer Maryland
- healthcare software sales Maryland
- software quality assurance Maryland

