Sr. Software Engineer - TS/SCI
$190k - $245kZachary Piper Solutions
Zachary Piper Solutions is seeking a Sr. Software Engineer – TS/SCI for a mission-focused technology organization supporting national security and advanced systems in the Reston, VA area. The Sr. Software Engineer – TS/SCI role is an onsite position working in highly secure environments on complex, high-impact platforms. The Sr. Software Engineer – TS/SCI will design and build full stack applications while driving DevOps best practices to support scalable, reliable, and secure software delivery. An ideal candidate brings deep software engineering expertise, hands‑on DevOps experience, and a background working within cleared environments. Responsibilities of the Sr. Software Engineer – TS/SCI: Design, develop, and maintain full stack applications using modern front-end and back-end technologies. Build and support CI/CD pipelines to enable automated, secure, and reliable deployments. Collaborate with DevOps, infrastructure, and security teams to implement DevSecOps best practices. Develop and manage cloud and on‑prem infrastructure using Infrastructure as Code (IaC) tools. Support containerized applications using Docker and Kubernetes in classified environments. Participate in system architecture, design reviews, and technical decision-making. Troubleshoot and resolve complex issues across the application stack and infrastructure layers. Ensure applications meet performance, reliability, and security requirements. Qualifications of the Sr. Software Engineer – TS/SCI: Active TS/SCI clearance is required. 7+ years of professional software engineering experience. Strong full stack development experience with languages such as Java, Python, JavaScript/TypeScript, or similar. Hands‑on DevOps experience with CI/CD tools such as Jenkins, GitLab CI, or GitHub Actions. Experience with containerization and orchestration tools including Docker and Kubernetes. Proficiency with cloud platforms (AWS, Azure, or GCP), preferably in secure or regulated environments. Strong understanding of Linux systems, networking concepts, and security best practices. Ability to work collaboratively in a fast‑paced, mission‑critical environment. Compensation for the Sr. Software Engineer – TS/SCI includes: Salary range: $190,000 - $245,000 Comprehensive benefits package including medical, dental, vision, 401(k), PTO, Sick Leave as required by law This job opens for applications on 05/8/2026. Applications for this job will be accepted for at least 30 days from the posting date. #J-18808-Ljbffr
$163.8k - $245.8k
...Workday, Inc. is seeking a Senior Software Development Engineer to support U.S. Federal Government contracts, requiring a TS/SCI w/CI Poly security clearance. Ideal candidates should have over 8 years experience in web application development or SaaS technologies, strong...SeniorFull timeFlexible hoursWorkday
Reston, VA5 hours ago$190k - $245k
...Zachary Piper Solutions is hiring a Sr. Software Engineer – TS/SCI in Reston, VA, focused on national security technologies. This onsite position requires extensive experience in full stack development and DevOps practices. Responsibilities include developing complex...SeniorZachary Piper Solutions
Reston, VA1 day ago- ...Senior Software Engineer TS/SCI FSP Government Customer-Herndon Herndon, VA ACTIVE TS/SCI CLEARANCE with FS poly REQUIRED TO BE CONSIDERED FOR THIS POSITION Senior Software Engineer: Analyzes user interfaces, maintain hardware and software performance tuning...Senior
TENICA
Herndon, VA3 days ago - ...A technology company is seeking a Software Engineer III Principal Cyber Software Engineer (Front End/UI-Focused) in Herndon, Virginia. The... ...possess strong Agile methodology skills, and hold an active TS/SCI with CI poly clearance. Responsibilities include developing services...Senior
EmergencyMD
Herndon, VA5 hours ago - ...Senior Telecom Software Engineer TS/SCI clearance Herndon, VA Responsibilities: • Conduct telecommunications network analysis, diagnostics, and performance remediation with expertise in protocols such as SS7, SIP, VoIP, TCP/IP, and Diameter across 2G,...SeniorLocal area
System One Holdings, LLC
Herndon, VA3 days ago $176.9k - $332.4k
...redefine what’s possible. Job Description: The Lead RF Software Engineer performs the following technical tasks as a leader in the Airborne... ...or DSP development and personnel management, ~ Active TS/SCI with CI Poly, ~ Background in design, development, test, and...SeniorWork experience placementFor subcontractorLocal areaWorldwideParsons Company
Herndon, VA3 days ago- ...technology and defense contractor in Herndon, Virginia, is seeking a Software Engineer to work on innovative solutions in the Space domain. This... ...platforms like AWS and Azure. Candidates must also possess a TS/SCI clearance. Benefits include competitive pay, medical coverage...SeniorFull timeFor contractorsFlexible hours
Lockheed Martin Corporation
Herndon, VA5 hours ago - ...A national security-focused technology firm in Reston is seeking an ETL Software Developer. This mid to senior level role requires an active TS/SCI clearance, and a degree in a related IT discipline. Candidates must have at least 6 years of relevant experience, including...Senior
CSI
Reston, VA5 hours ago - ...Redrockgs in Herndon, Virginia, is seeking a Software Engineer skilled in Agile development and proficient in technologies like Angular, Node.js, and JavaScript. Candidates must have a current TS/SCI with Full Scope Polygraph clearance. This role offers competitive pay...
Redrockgs
Herndon, VA4 hours ago - ...Ardent Principles, Inc. in Herndon, Virginia, seeks a Full Stack Software Engineer with active TS/SCI clearance. The ideal candidate will develop scalable web applications using modern frameworks like Angular and TypeScript. This full-time position includes a highly competitive...Full time
Ardent Principles Inc
Herndon, VA1 day ago - ...Senior Software Developer, TS/SCI with Full Scope Polygraph Required, Herndon, VA The Senior Software Developer must have an active TS/... ...leader experienced in Software Automation development and engineering, programming, and automation solutions in complex enterprise...Senior
Next Step Systems LTD
Herndon, VA1 day ago - ...A technology solutions provider is seeking a Software Engineer IV to join their team in Herndon, VA. The role requires significant experience... ...scripting, all within a Unix/Linux environment. An active TS/SCI with CI Poly clearance is a must. The successful candidate will...Senior
EmergencyMD
Herndon, VA1 day ago - ...Data Pulse Tech LLC, based in Ashburn, VA, is seeking a Senior Software Engineer. This role involves supporting a federal government... ...strong skills in Python and JavaScript/TypeScript, and an active TS/SCI clearance. Join a small company where your work has a significant...Senior
Data Pulse Tech LLC
Ashburn, VA4 hours ago - ...Overview *****MUST HAVE AN ACTIVE TS/SCI WITH ABILITY TO OBTAIN TO PASS A POLY CLEARANCE****** Software Engineer IV Responsibilities Work within a cross-functional Scrum team, and perform software engineering and development activities, associated with supporting...Senior
EmergencyMD
Herndon, VA5 hours ago - ...As a Software Development Engineer with a focus on Identity and Access Management (IDAM), you will leverage your expertise in both software development... .../ Bachelor's degree with 10+ years of experience. Active TS/SCI clearance and ability to obtain and maintain a CI poly....Temporary workRelocation package
Enssolutions
Reston, VA5 hours ago $200k
...Join Our Team as a Software Engineer at Zachary Piper Solutions! Are you a skilled Software Engineer seeking an opportunity to make a... ...Knowledge of cloud platforms (e.g., AWS, Azure, GCP) Active TS/SCI Security Clearance is required to start with the ability to...Work at officePiper Companies
Herndon, VA4 days ago- Software Engineer - TS/SCI Required Are you a software engineer who thrives on building robust, scalable systems? Do you enjoy crafting clean, maintainable code that powers mission-critical environments? At Expedition Technology (EXP), we're looking for a Software Engineer...
Expedition Technology
Herndon, VA5 days ago - ...Insight Xcite in Herndon, Virginia, seeks a Software Developer to design and maintain secure applications for critical government missions... ...years of software development experience and possess an active TS/SCI clearance. Responsibilities include developing backend services...
Insight Xcite
Herndon, VA5 hours ago - ...leader in providing Information Technology, Engineering Services, Program Management, and... ...critical objectives. Solerity is seeking a Software Engineer to support a mission-focused... ...or a related technical field. Active TS/SCI clearance with Polygraph required....Full timeFor contractorsRemote workFlexible hours
Solerity, Inc.
Herndon, VA1 day ago - ...consulting firm in Herndon, Virginia, is seeking a Mid-Level Software Engineer to develop impactful software solutions. Ideal candidates should... ...with Java or JEE and backend frameworks like Spring. TS/SCI clearance is required. This role allows for significant collaboration...Remote work
Booz Allen Hamilton
Herndon, VA1 day ago - ...Software Engineer Marathon TS, Inc. has multiple prime contracts and sub contracts supporting DHS, DoD, and Intelligence Community customers. We... ...Sprint Summary Reports. Requirements: Active TS/SCI clearance with the ability to obtain a polygraph if you do...Immediate startRemote work
Marathon TS
Herndon, VA2 days ago - ...ON SITE - Full Stack JavaScript/React Software Engineer – Active TS/SCI SDI is a growing small business located in Alexandria, Virginia providing software development and technical services to federal agencies, government contractors, public sector agencies, and commercial...For contractorsCasual workFlexible hours
Systems Definition
Reston, VA1 day ago - ...MAXAR TECHNOLOGIES, INC. is seeking a GIS DevOps Engineer based in Herndon, VA, responsible for designing and delivering robust geospatial... ...data services. Candidates must be U.S. citizens with an active TS/SCI security clearance and at least 14 years of experience in a...Senior
Maxar Technologies
Herndon, VA4 hours ago - ...Enterprise Account Software Systems Engineer Clearance Level: Top Secret w/ Polygragh Location: Herndon, VA, (Hybrid / Onsite as required by customer) Clearance : Must possess an active TS/SCI with a Polygraph We're a fast-growing AI company building...
Finch AI
Herndon, VA2 days ago - ...looking for an Artificial Intelligence Engineer in Reston, Virginia. In this role, you'll... ...your expertise in machine learning and software engineering to build and maintain AI systems... ...with Python, LLM systems, and hold a TS/SCI clearance. A Bachelor's degree is required...Senior
Booz Allen Hamilton
Reston, VA4 hours ago - ...A technology solutions company in Herndon seeks a Software Engineer IV who will enhance software in an Agile DevSecOps environment. The ideal... ...a solid understanding of RESTful APIs. Candidates must have TS/SCI with the ability to obtain a poly clearance. The role includes...Senior
EmergencyMD
Herndon, VA5 hours ago - ...solutions provider located in Reston, VA is seeking a Senior Cloud Engineer I to enhance secure cloud environments. This role demands... ...scalable solutions and automating cloud operations, requiring active TS/SCI clearance with CI Polygraph. The ideal candidate will...Senior
Kaizen Lab Inc.
Reston, VA5 hours ago - Sunfire Solutions is seeking a Cleared UI/UX Software Engineer in Fairfax, VA. The role requires an active TS/SCI security clearance and involves designing and implementing web solutions for government clients. Ideal candidates will have over 10 years of software engineering...Senior
- .... This role involves building systems for threat hunting and maintaining infrastructure while adhering to security requirements. A TS/SCI clearance is essential, along with strong analytical skills. Join a team that values flexibility, collaboration, and total well-being...Senior
Phase2 Technology
Reston, VA4 hours ago $187k - $229k
...Windows and Linux systems, along with scripting and cloud technologies. Required qualifications include a Bachelor's degree and active TS/SCI clearance, with a competitive salary range of $187,000 - $229,000. Note that telework is currently not authorized. #J-18808-Ljbffr...SeniorRemote workRPMGlobal
Herndon, VA1 day ago
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Sr. Software Engineer - TS/SCI. Be the first to apply!
- software engineer internship remote Reston, VA
- IT software developer Reston, VA
- machine learning software engineer Reston, VA
- software engineer part time Reston, VA
- senior robotics software engineer Reston, VA
- software engineer entry level Reston, VA
- software development engineer aws Reston, VA
- startup software engineer Reston, VA
- rust software engineer Reston, VA
- part time software developer remote Reston, VA