Sr. Software Engineer TS/SCI Polygraph
Leidos
Overview Leidos has an exciting opportunity for a Sr. Software Engineer! Must have an active TS/SCI Polygraph up front. No exceptions. You will perform software development lifecycle (SDLC) activities as both an individual and a member of our top-notch agile development team building a large complex enterprise system. Development includes the full range of turning Agile user stories into implementable concepts, through development, unit testing, integration and test, and deployment of the new capabilities for the large complex enterprise system. Following the Behavior-driven Development (BDD) pattern, developers are responsible for implementing robust testing leveraging DevOps automation and, where appropriate, use of test automation commercial tools. There are a range of opportunities for server-side business logic implementation as well as client web application and user interface (UI) development. Java, Python, embedded C/C++, Java cryptographic framework, XML, web UI (i.e., Angular, JavaScript, CSS, HTML, etc.) and special purpose device programming opportunities are available. Primary Responsibilities You will actively participate in daily stand-ups, Sprint Planning, Program Increment (PI) Planning, and other related team activities; analyze and study complex system requirements, use design software tools, provide support using formal specifications, data flow diagrams, and other accepted design techniques and will use sound software engineering principles to ensure that developed code is modifiable, efficient, reliable, understandable, fault tolerant, and reusable. You will provide software process management and control throughout the coding portion of the software development process and will promote code reuse and cross-program collaboration while reducing maintenance costs by creating common functions and shared actions for developers and testers. You will engineer, author, tune and document automation scripts in a development environment and deploy to the test/production bench. Basic Qualifications Must have a BS degree and 12 – 15 years of prior relevant experience or Masters with 10 – 13 years of prior relevant experience. Additional experience may be substituted for a degree. Must have demonstrated experience with Java. Must have experience or familiarity with multiple Java frameworks: Spring to include Boot and Data, Java Enterprise Edition (JEE) (i.e., JPA, EJB, JTA, Servlet), Jackson, Jersey, Swing, JavaFX. Must have experience or familiarity with multiple of the following languages such as Javascript, Python, C/C++, Groovy, Structured Query Language (SQL). Must have experience with development IDEs (Integrated Development Environments) such as Eclipse, Visual Studio Code, Visual Studio, Rhapsody, WebStorm. Must have experience with databases such as Oracle, PostgreSQL, MongoDB, SQL Server. Must have experience with Web Application User Interface Development, knowledge of databases and structures, Spring Framework, and/or experience working with AngularJS, JSON, HTML, XML, XSLT. Must have experience with software source control and configuration management tools. Must have experience with technologies underlying cryptographic systems (symmetric and asymmetric cryptography, ASN.1 encoding, XML canonicalization, digital signatures). Must have experience developing on Windows, and/or Linux operating systems. Must have documented professional experience with web services. Must have a strong understanding of sound software development principles and practices. Must be able to plan and prioritize personal tasking and be able to communicate effectively verbally and in writing. Must be an independent thinker, capable of performing high quality work, both independently and with a team in a fast-moving environment. Preferred Qualifications Experience with the following: Java Enterprise Edition (JEE) (i.e., EJB, JPA, JTA, JAX-B, JAX-RS, JAX-WS), SQL, application servers (Tomcat, WebLogic, JBoss), Spring framework, scripting. Experience or familiarity with multiple of the following technologies: XML/XSD/SOAP/WSDL/XSLT, REST, JSON, YAML, Containers (Docker, Podman, Kubernetes, OpenShift). Experience with Javascript frameworks: AngularJS, Bootstrap, JQuery. Experience with Testing and Mocking frameworks: JUnit, Jupiter, Mockito, Jasmine, Karma, Cucumber, Unified Functional Tester (UFT), Selenium, FITNesse. Experience with build tools: Maven, CMake, RPM, Jenkins, Nexus. Experience with high level requirements management including requirements decomposition, secure systems engineering and development, trade-off analysis, interface control, and testing and continuous integration. Experience in software development on Agile teams using Agile Developer practices such as Pair Programming, Test Driven Development (TDD), Refactoring, and Acceptance Test Driven Development (ATDD). Experience with Behavior Driven Development (BDD). Secure Software development (i.e., Layer 7 Policy). Experience with the Scrum, Scaled Agile Framework (SAFe) methodology, SAFe Agilest Certification, or experience as a member of an Agile team. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws. #J-18808-Ljbffr Leidos
- Overview Leidos has an exciting opportunity for a Sr. Software Engineer. Must have an active TS/SCI Polygraph up front. No exceptions. Responsibilities Perform software development lifecycle (SDLC) activities as both an individual and as a member of an agile development...Senior
- A defense and technology company in Virginia is seeking a Sr. Software Engineer with an active TS/SCI Polygraph. The role involves software development lifecycle activities within an agile team, utilizing Java, Python, and C/C++. Candidates should have extensive experience...Senior
- Integrity Technology Consultants seeks a top-tier Expert-Level Application Engineer with TS/SCI clearance and polygraph, to design and manage software across Linux VMs and Kubernetes clusters. You will collaborate with DevOps teams, implement security hardening, and drive...Senior
- Deliver simple solutions to complex problems as an AI/ML Software Engineer Senior at GDIT. Here, you’ll tailor cutting‑edge solutions... ...NEED TO SUCCEED: The position requires an active Top Secret/SCI with Polygraph clearance BS/BA in Software Engineering, Science,...Senior
- B4Corp is seeking a Senior Software Engineer in Bethesda, MD to design, develop, and maintain Marklogic-based applications within a DevOps framework. The role requires a TS/SCI clearance with polygraph and offers an exciting opportunity to work on mission-critical systems...Senior
$138.06k - $186.79k
Clearance Level Must Be Able to Obtain Top Secret SCI + Polygraph Public Trust/Other Required None Job Family Software Engineering Skills Front-End Development,Lean Agile,... ...capability analysis. Security Clearance Level: TS/SCI with Polygraph Location: McLean VA, on...Temporary workWork experience placementImmediate startWorldwideFlexible hours- Senior Software Engineer | TS/SCI FSP Location: Secure On-site Components Clearance: Active TS/SCI with Full Scope Polygraph Required The Mission We are engineering a sophisticated agentic harness designed for the world's most demanding intelligence environments. While...SeniorContract work
- Senior Software Reverse Engineer Support a Government Customer in Bethesda, Maryland. Responsibilities Isolate, review, analyze, and reverse... ...(2) years of experience. Security Clearance Active TS SCI + CI Polygraph. Qualifications Two (2) years of experience with...SeniorFor contractors
- ..., Financial Management, Facilities Engineering Services, and Program Management support... ...This role provides hands-on software development, design, and operational... ...SDVOSB Requirements ~ Active TS/SCI clearance with CI Polygraph is a must have! Benefits Benefits...SeniorMonday to FridayShift workDay shift
- Belay Technologies is seeking a talented Software Engineer to develop and enhance complex software systems based in Maryland Park... ...science, 10 years of relevant experience, and a TS/SCI Clearance with a polygraph. Responsibilities include software design, debugging tasks...Senior
- Software Developer - TS/SCI with Polygraph Required Job Locations: US-VA-McLean Job ID: 2026-13717 # of Openings: 1 Category: Intelligence Benefit... ...Time Overview LMI is seeking a skilled Forward Deployed Engineer in the Washington, DC region to join one of our M&S...Full timeTemporary workWork experience placementLocal areaRemote work
$180k - $230k
Synertex LLC in McLean, VA is seeking a Senior Software Engineer to deliver full‑stack, AI‑driven web applications for a U.S. federal... ...of $180,000-$230,000, negotiable based on experience. Active TS/SCI with Polygraph clearance is required. #J-18808-Ljbffr Synertex LLCSenior$43.27 - $108.17 per hour
...Northern VA Description: This is a forensic software development and reverse engineering position combined into one! The candidate will... ...Must hold a US government security clearance at the TS//SCI level with Polygraph Must have a Bachelors degree in one of the...Hourly payContract workFor contractorsLocal areaRemote workRelocation packageFlexible hours$186.54k - $252.38k
Job Description We are seeking an experienced Software Developer capable of working with a software development team to provide... ...development Familiarity with Nitro Security Clearance Level: TS/SCI with Polygraph Location: McLean VA, on Customer Site US Citizenship...Temporary workWork experience placementFlexible hours$200k - $235k
A leading technology firm is seeking a skilled Software Engineer (Java Developer) to join their team. The ideal candidate will possess... ...strong Java programming skills and have an active TS/SCI clearance with polygraph. Responsibilities include developing high-quality...Senior$215k
Position Overview Position requires a Top Secret (TS/SCI) Clearance with a Polygraph. Labor Category: Software Engineer | Position Title: Software Engineer | Position Level: Level 3 - Senior | Salary: Up to $215,000 per year | Core Hours: 9am - 4pm | Location: Bethesda...SeniorTemporary workFlexible hours- A technology and defense company in Alexandria is looking for a Software Engineer to join its Cyber and Analytics team. The ideal candidate must possess an active TS/SCI Polygraph. Responsibilities include software development within a large enterprise system, using Agile...Flexible hours
$260k
B4Corp is looking for a Software Engineer - Level 1 located in Bethesda, MD. This role requires top-secret (TS/SCI) clearance and offers a salary up to $260,000 per year. You will be involved in programming initiatives, testing methods, and custom software solutions. Candidate...- ...lead GIS projects, develop spatial databases, and apply GIS analytics to natural resources and infrastructure data. A TS/SCI clearance with CI Polygraph is required. Experience with cloud platforms and database management is preferred; include leadership of cross-...Senior
- AI Policy Engineer Location: Bethesda, MD Full Time | On Site Join Synertex LLC and bring your expertise to a mission that matters... ...and challenges before they arise. Requirements Active TS/SCI with CI Polygraph. Bachelor’s degree and fourteen (14) years or more of...Full time
$165k - $185k
Full Stack Developer - TS/SCI with Polygraph Required Job Locations: US-DC-Washington Job ID: 2026-13720 # of Openings: 1 Overview... ...for this role may include any or all the following: software development, cloud engineering, management consulting, implementing software code,...Contract workLocal areaFlexible hours$180k - $250k
...Stack Developer Clearance: Must hold an existing active TS/SCI with required polygraph (US Citizenship required) Location: McLean, VA Onsite Daily... ...About FINCH AI Finch AI is a fast-growing, fast-paced software development organization; our mission is to build new ways...Work experience placement- ...solutions provider located in Washington, DC, seeks an experienced Software Engineer. The role involves developing, maintaining, and enhancing... ...Java, Python, and cloud technologies is essential. An active TS/SCI FS Poly security clearance is required, with consideration...Senior
- ...NEED TO SUCCEED Education: Bachelor’s degree in IT, data, engineering, library science, management, or related field (or equivalent... ...and organizational skills. Security clearance level: TS/SCI with Polygraph US citizenship required. Preferred Qualifications: CDMP...Senior
$142.79k
...Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required:... ...into opportunity as a Systems Engineer with GDIT. A career in... ...system requirements, hardware/software interfaces and applications and... ...II role. Security Clearance: TS/SCI clearance and ability to...SeniorTemporary workSummer workWork at officeLocal areaRelocationFlexible hours- ...intersection of deep technical ownership and customer-facing engineering: you'll define how we measure reliability, lead... ...Must possess and be able to maintain a TS/SCI security clearance with appropriate polygraph U.S. citizenship required Willingness to travel...Full timeWork at officeRemote workFlexible hours
- Leidos is seeking a TS/SCI cleared Software Engineer to support a long‑term DIA‑NDOC DOMEX Technology Platform contract in Bethesda, MD. The role focuses on building scalable Python microservices, deploying in Kubernetes, and enabling real‑time data flows with Kafka and...SeniorContract workRemote workFlexible hours
- Software Engineer Level 4 - (2225) Job Title Software Engineer Level 4 Location Washington, DC 20032 US (Primary) Category Research, Development... ...Bachelor's Degree Travel Security Clearance Required TS/SCI Job Description Prescient Edge is seeking a Software Engineer...SeniorFull timeContract work
- Software Engineering Careers Bethesda, Maryland Xcelerate Solutions is seeking a TS/SCI cleared Senior Software Engineer to join our mission-driven team. This role supports our client’s efforts to design and implement a cutting-edge data-centric architecture leveraging...Senior
- ...make a personal impact as a Full Stack Software Developer, supporting customer... ...Education : Bachelor's Degree (Computer Engineering, Computer Science, Electrical... ...CodeBuild Security Clearance Level : TS/SCI with active polygraph Desired Skills: AWS ECS SAML...
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Sr. Software Engineer TS/SCI Polygraph. Be the first to apply!
- ngo software engineer Alexandria, VA
- software developer Alexandria, VA
- part time software developer remote Alexandria, VA
- financial software developer Alexandria, VA
- senior software engineer ruby on rails Alexandria, VA
- software engineer amazon Alexandria, VA
- senior software design engineer Alexandria, VA
- software engineer part time Alexandria, VA
- software engineer remote Alexandria, VA
- entry level software engineer remote Alexandria, VA


