Principal Java Software Developer 20+yrs Cleared TS/SCI Polygraph Reqd
Nissint Technologies, LLC
Job Description
Job Description
This position requires an active TS/SCI clearance with Polygraph. Please do not apply if you do not already have such a clearance.
Principal Software Engineer
20+ Years of Experience
Bachelors Degree required, or +4 years to substitute
Job Description:
This position is part of a software engineering team responsible for developing new features and maintaining existing functionality for a full-stack application that supports an analysis-focused mission. The application is distributed across multiple nodes and leverages a microservice architecture to ensure scalability and resilience. The team works across the entire technology stack—from backend services built with Java and Spring Boot, to modern web interfaces developed in Angular. Day-to-day responsibilities include implementing RESTful APIs, integrating services, troubleshooting distributed system issues, and collaborating closely with mission analysts and other developers to deliver timely, reliable software capabilities. The work is dynamic and mission-critical, requiring regular coordination, continuous improvement, and adaptation to evolving requirements.
Required Skills:
Java
Spring / Spring Boot
REST API development
Web Development in Angular 14+, JavaScript, TypeScript
A thorough understanding of microservice architecture is a must
Desired Skills:
Artifactory
AWS Instances
AWS Route 53
Bash scripting
Confluence
docker-compose
Docker
Elastic search
Kibanna
Gitlab CI
Jira
Lambda (java)
Maven
MongoDB
RSocket
Reactor Project
Spring data
SSH
Nissint Technologies is a Woman-Owned Small Business (WOSB) founded in 2006, specializing in providing tailored technology solutions. Our leadership team, with backgrounds in the Intelligence Community, has assembled a group of elite developers with expertise in various areas, including Digital Signal Processing, Enterprise Applications, User Experience and Interfaces, Big Data and Cloud Analytics, and Cyber Capabilities.
Nissint's philosophy is to attract top talent by offering excellent compensation, rewarding work, and growth opportunities. We operate on four core principles: holistic expertise, collaborative learning, energetic advancement, and perpetual optimization
Company Description
Nissint Technologies is a Woman-Owned Small Business (WOSB) founded in 2006, specializing in providing tailored technology solutions. Our leadership team, with backgrounds in the Intelligence Community, has assembled a group of elite developers with expertise in various areas, including Digital Signal Processing, Enterprise Applications, User Experience and Interfaces, Big Data and Cloud Analytics, and Cyber Capabilities.\r\n\r\nNissint's philosophy is to attract top talent by offering excellent compensation, rewarding work, and growth opportunities. We operate on four core principles: holistic expertise, collaborative learning, energetic advancement, and perpetual optimization
$25k
...Description Job Description Software Engineer - Jira/Java/Postgres - 20+ yrs of Experience (PARTIAL TELEWORK) - TS/SCI w/Poly clearance is... ...Clearance: Current TS/SCI Polygraph: Required Salary... ...Skills Design, develop, test, deploy, maintain and...Suggested16 hoursContract workTemporary workRemote workShift work$25k
...Description Job Description Software Engineer - UX/UI - 20+ yrs of Experience - TS/SCI w/Poly Required... ...Software Engineer that develops, maintains, and... ...: Current TS/SCI Polygraph: Required (Poly must be... ...ReactJS • NodeJS • Java • Spring Boot framework...SuggestedContract workTemporary workRemote workShift work$25k
...Job Description Software Engineer - Angular/Javascript - 20+ yrs of Experience (PARTIAL TELEWORK) - TS/SCI w/Poly clearance is... ...Current TS/SCI Polygraph: Required Salary... ...(npm, gulp) Java/Python Mongo DB... ...components Designing, developing, and modifying...Suggested16 hoursContract workTemporary workRemote workShift work$25k
...- GIT/Linux - 10+ yrs of Experience - TS/SCI w/Poly Required... ...Current TS/SCI Polygraph: Required (Poly must... ...critical business software to Production • Develop & Maintain sound... ...Ruby, Perl, and Java • Proficient... ...Off · 20 Paid Time Off...SuggestedContract workTemporary workRemote workShift work$154.05k - $278.48k
...exciting opportunity for a Principal Software Engineer in our... ...requires an active/current TS/SCI Polygraph up front. Key... .... Expert in Java (17+ preferred), the... ...team collaboration and clearly convey architecture and... ...communication. Skilled in developing technical documentation...SuggestedLocal areaImmediate startFlexible hours$119k - $218.3k
We are seeking a Software Engineer III to design, build, and... ...initiatives. In this role, you will develop AI-enabled websites,... ...Ability to provide clear guidance to others The... ...Compartmented Information (TS/SCI) clearance with polygraph ~ Ability to travel 10...Worldwide- ...Description Job Description Software Engineer - Java/Springboot/DevOps - 12+ yrs of Experience - TS/SCI w/Poly Required Halogen... ...to join our team who develops, maintains, and enhances complex... ...: Current TS/SCI Polygraph: Required Salary Range...Contract workRemote workShift work
$119k - $198.4k
...mission outcomes. Work you'll do As a Software Engineer III on the AI & Engineering... ...deadlines Ability to provide clear guidance to others The team Deloitte... ...in security operations ~ Active TS/SCI with polygraph clearance ~ Ability to travel 10-2...Local areaWorldwideFlexible hours- ...DevOps Engineer – TS/SCI with Full Scope Polygraph Location: Annapolis Junction, MD Work Arrangement... ...Install, configure, monitor, and maintain software and infrastructure. Manage network... ...maintenance and configuration Java/Spring Boot, particularly...Remote work1 day per week
$162k - $194k
...Software Engineer (Active TS/SCI with Full Scope Polygraph) Laurel, United States | Posted on 10/01/2026 Clearance Requirement... .... Key Responsibilities Develop, test, and prototype software... ...manage builds and dependencies using Java, Spring, Gradle, and Docker....Local area$131.3k - $237.35k
...exciting opportunity for a Software Engineer in our... ...This system includes a Java/Spring-based backend,... ...Responsibilities Develop, maintain, and... ...Qualifications Active TS/SCI clearance with Polygraph up front (no sponsorship... ...JIRA or Redmine Clear, professional communication...Immediate startFlexible hours$218k - $259k
...Cloud Software Engineer 3 (TS/SCI Clearance with Full Scope Polygraph Required) Laurel, United States Clearance Requirement... ...this role, you will design and develop an evolving suite of operational... ...combined programming experience across Java, C++, or Python within the last...Local area$25k
...Oracle/Linux/Bash - 10+ yrs of Experience - TS/SCI with Poly Required... ...data flow and analysis. Develops relational and/or... ...databases, database parser software, and database loading... ...Current TS/SCI Polygraph: Required... ...Time Off · 20 Paid Time Off Days...Contract workTemporary workRemote workShift work$176k - $282k
...looking for full stack developers that will work on a... ...and refinement of software and Devops team for... ...Qualifications 20 years of... ...requirement.Active TS/SCI security clearance with a current polygraph is required.Required... ...Strong proficiency in Java and Kotlin, with a...Contract workShift work- ...An active Top Secret/SCI Clearance with a Full Scope Polygraph is required. This job is onsite in Annapolis... ...Installing and configuring complex software; Managing network servers and technology... ...maintenance and configuration Java / Spring Boot (troubleshooting...Full timeImmediate startRemote work1 day per week
- ...Intel Community! The Senior Software Engineer will serve as technical... ...benchmarks. Requirements: · TS/SCI Clearance with polygraph · Expert in Java (17+ preferred) and the Spring Boot... ...written communication skills; able to clearly communicate architecture and...For contractorsLocal areaRemote workFlexible hours
- ...JBlocks team is seeking a Software Engineer to collaborate with our developers in implementing new... .... Proficiency in Java development is essential... ...Requirements: · TS/SCI Clearance with polygraph · Ability to enforce... ...communication skills- able to clearly communicate...For contractorsRemote workFlexible hours
- ...Solutions is seeking a senior software engineer in Maryland to... ...across languages including Java, C++, Python, and Go, with emphasis... ...The ideal candidate has 20 years of experience, a CS degree, and an active TS/SCI with Full Scope Polygraph. You will collaborate across...
- ...Zohorecruit in Laurel, MD seeks a Software Engineer (Level 2/3) to design, prototype,... ...D setting. The role requires active TS/SCI with polygraph, a CS degree (or equivalent) and extensive software experience using Python, Java, and Scala on Linux, plus experience with...
$150k - $250k
...Description Job Description Software Engineer Location:... ...Security Clearance: Active TS/SCI with Full Scope Polygraph Required Salary Range:... ...The selected candidate will develop, maintain, and enhance complex... ...Qualifications Twenty (20) years of experience as a...Full time- ...Annapolis Junction, MD Category: Software Engineer (SWE) - Demonstrated experience with Java is required for these... ...Remote Type: No Clearance: TS/SCI w/ Polygraph Demonstrated in-depth... ...driven Development (BDD) pattern, developers are responsible for...Temporary workWork experience placementImmediate startRemote work
- ...Zohorecruit is seeking a Software Engineer in Laurel, MD with an active TS/SCI clearance and Full Scope Polygraph. You will develop and prototype secure software components across full... ...solutions. The role requires mastery of Java, Spring, Gradle, Docker, and Linux/Bash...
- ...An active Top Secret/SCI Clearance with a Full Scope Polygraph is required. This job is 100% onsite in Annapolis... ...an immediate need for a Full Stack Developer to support the development and... ...base. Required Technical Skills Java 8+ C/C++ Scripting (Python,...Full timeImmediate start
- ...An active Top Secret/SCI Clearance with a Full Scope Polygraph is required. This is a hybrid schedule with up... ...will work closely with system and software engineers to design, prototype, and... ...execute. • Evaluation & Reliability: Develop robust testing, evaluation, and...Full timeImmediate startRemote work2 days per week3 days per week
$206k - $248k
...Machine Learning Engineer (TS/SCI Clearance With Full Scope Polygraph Required) Laurel,... ...10/01/2026 Position: Software Engineer – Level 2 / Level... ...Engineer (Level 2/3) to develop, prototype, and enhance compliance... ...software using Python, Java, Scala, Lucene, JEXL, SQL...Full timeLocal area- ...Zohorecruit in Elkridge, MD seeks a senior Cloud Technical Expert with TS/SCI and a current Polygraph to provide strategic advisory, architectural leadership, and technical direction for hybrid cloud initiatives. You will work across IaaS, PaaS, and SaaS, guiding modernization...
- ...An active Top Secret/SCI Clearance with a Full Scope Polygraph is required. This job is 100% onsite in Annapolis... ...an immediate need for a Front-End Developer/508 Compliance Specialist to... ...Required technical skills include: Java 8+ Understanding, maintaining & troubleshooting...Full timeImmediate start
- ...SOFTWARE DEVELOPER - TS/SCI in MD Position Description: CNF Technologies is seeking Software Developers... ...with Counterintelligence (CI) Polygraph required. • Bachelor’s degree in computer... ...in programming languages such as Java, C++, or Python; knowledge of secure...
$135k - $216k
...enterprise service delivering software security solutions across... ...agency stakeholders to design, develop, and sustain enterprise... ...required bachelor’s degree.Active TS/SCI with polygraph is required.Security+ plus... ...Skillset: Pig Scripting Java DockerPython MapReduce programming...Contract workTemporary workShift work$10k
...Job Description Job Description java, python, C/C++, Assembly (x86), and... ...United States citizenship and an active TS/SCI security clearance and polygraph are required for the position.... ...Assembly (x86). Experience with software architecture, operating system design...Contract workTemporary workImmediate start
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Principal Java Software Developer 20+yrs Cleared TS/SCI Polygraph Reqd. Be the first to apply!
- principal software engineer Annapolis Junction, MD
- entry level java developer remote Annapolis Junction, MD
- java web developer Annapolis Junction, MD
- remote junior java developer Annapolis Junction, MD
- java developer remote part time Annapolis Junction, MD
- java developer Annapolis Junction, MD
- java software engineer Annapolis Junction, MD
- principal Annapolis Junction, MD
- senior principal cloud computing engineer Annapolis Junction, MD
- java microservices Annapolis Junction, MD



