TS/SCI

TS/SCI Developer Jobs

28 jobs found

Today

Software Developer (Java) - TS/SCI w/Poly

General Dynamics Information Technology McLean, VA

McLean, VA

Today

$157k - $213k/yr Full time Backend Developer APIs Data Integration

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Job Description

General Dynamics Information Technology is seeking a Software Developer with a focus on Java to support the development of systems and capabilities for full motion video. This onsite position in McLean, Virginia requires a TS/SCI with Poly clearance and offers a salary range of USD 157,250 to 212,750 annually.

Responsibilities

Develop and maintain software for FMV programs, aligning with the program's technical vision and mission objectives.
Utilize a broad set of languages and technologies, including Java, JavaScript/React/Redux/AngularJS, SQL/NoSQL/Graph, and C++.
Contribute to microservice API development and integration using gRPC and REST.
Deploy micro and macro services with NodeJS or JBoss; manage endpoints via gRPC or REST; conduct REST-based service integration, API negotiation, threading, and load balancing.
Apply ETL concepts and engines to decouple solutions; create and modify orchestration templates for classified environments.
Model and query data using GraphDB, SQL, and NoSQL; work with MS SQL Server, OmniSci, and Accumulo/Hadoop for data storage and analysis.
Build reactive web applications and maintain large-scale React/Redux apps with RxJS and Reactive Streams; sustain legacy AngularJS applications and troubleshoot in customer spaces.
Handle applications ranging from Java to C++ with priority driven by customer needs; leverage messaging engines and HA clusters; work with Kafka streams and ksqlDB.
Use and manage containers and orchestration tools such as Docker and Kubernetes; create, deploy, and manage containers and ensure scalability of deployed software.

Requirements

Ability to apply and execute highly advanced technologies, principles, theories and concepts.
Willingness to learn in one discipline while developing working knowledge in adjacent fields.
Proficient understanding of engineering principles, concepts, practices, and standards.
Experience using JIRA to manage daily work, sprints, increments, metrics, performance, and backlogs.
Experience developing within an Agile framework, including Sprints, Demonstrations, and Scrum ceremonies.
Proven ability to communicate issues, impacts, and corrective actions clearly.
Strong capability to convey project topics to diverse audiences and report relevant information succinctly.
Proven ability to anticipate technology, process, and skill needs.
Education: Bachelor’s of Science in Engineering.
Experience: Minimum 5 years of related experience.
Citizenship: U.S. Citizenship Required.

Technologies

Java
Javascript
React/Redux
AngularJS
SQL
NoSQL
Graph
C++
gRPC
REST
NodeJS
JBoss
GraphDB
MS SQL Server
OmniSci
Accumulo/Hadoop
RxJS
Reactive Streams
Kafka
ksqlDB
Docker
Kubernetes

Benefits

401K with company match
Comprehensive health and wellness packages
Internal mobility team to help advance your career
Professional growth opportunities including paid education and certifications
Exposure to cutting-edge technology
Paid vacation and holidays for rest and recharge

Work Requirements

Years of Experience: 5+ years of related experience (may vary based on technical training, certification(s), or degree)
Travel Required: None
Citizenship: U.S. Citizenship Required

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1d ago

Full Stack Software Engineer III w/ TS/SCI Polygraph

Deloitte Baltimore, MD

Baltimore, MD

1d ago

$119k - $198k/yr Full time Backend Developer Senior APIs

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Job Description

Based onsite in Baltimore, MD, this Full Stack Software Engineer III role sits on Deloitte's AI & Engineering team, supporting a US Government client in a classified environment. The role focuses on designing and delivering secure, AI-enabled full-stack applications and APIs that meet stringent security and mission requirements, blending engineering across the stack with AI-enabled capabilities.

Responsibilities

Design, build, and enhance full-stack web applications, including front-end interfaces, back-end APIs, and supporting data structures.
Own assigned features across the software development life cycle, including requirements analysis, architecture, development, testing, security hardening, and deployment documentation.
Develop applications using Python, .NET, HTML/CSS, and other web technologies in alignment with program security requirements and user experience needs.
Integrate artificial intelligence-enabled capabilities into applications, including intelligent search, large language model-powered features, and workflow automation.
Support code reviews, test coverage, documentation, and ongoing maintenance to improve application quality, security, and long-term usability.

Requirements

Bachelor's degree
4+ years of experience in application development, test-driven development, and the software development life cycle
4+ years of experience in Python
4+ years of experience in user interface design
Active TS/SCI with polygraph clearance
Ability to travel 10-25%, on average, based on the work you do and the clients and industries/sectors you serve.
Must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future.

Technologies

Python
.NET
HTML/CSS
React
PostgreSQL

Benefits

Discretionary annual incentive program

The Team

Deloitte's Government & Public Services practice brings together people, ideas, technology, and outcomes to help federal, state, and local government clients and public higher education institutions address complex challenges and advance their missions. Within that practice, our Engineering as a Service offering provides end-to-end design, implementation, and technology operations support. We help organizations modernize technology, transform engineering teams, and deliver complex programs through flexible delivery models tailored to client needs.

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2d ago

Senior Software Engineer - Level 3 (TS/SCI with Poly)

Lockheed Martin Corporation King of Prussia, PA

King of Prussia, PA

2d ago

Full time Senior DevOps Engineer

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Job Description

Senior Software Engineer responsible for designing, developing, and maintaining software for satellite mission planning and spacecraft operations in a TS/SCI with Poly environment at Lockheed Martin Space.

Responsibilities

Collaborate with a team of software engineers to develop, enhance, and sustain satellite mission planning capabilities.
Design, develop, test, and maintain software applications supporting mission planning and spacecraft operations.
Implement software features and resolve defects in accordance with program requirements and software development best practices.
Work closely with systems engineers, operators, and senior engineers to understand mission planning requirements and translate them into software solutions.
Participate in software design reviews, code reviews, and technical discussions.
Support software integration, testing, troubleshooting, and deployment activities.
Participate in Agile development activities including sprint planning, daily scrums, demonstrations, retrospectives, and release planning.
Develop knowledge of satellite mission planning concepts, operational workflows, and mission planning algorithms.

Requirements

Bachelor's degree in Computer Science, Software Engineering, Aerospace Engineering, Applied Physics, Mathematics, or a related technical discipline, or equivalent experience.
Experience with software design, implementation, debugging, and testing using C#, Java, or similar object-oriented programming languages.
Experience working in a collaborative software development environment.
Strong problem-solving, communication, and teamwork skills.
Desire to learn mission planning concepts and contribute to the development of operational mission software.
Familiarity with Agile software development methodologies.
Active TS/SCI security clearance with favorable polygraph adjudication and ability to maintain the required clearance. U.S. Citizenship required.

Technologies

C#, Java, Git, GitLab, CI/CD pipelines

Benefits

Flexible Schedules, dependent on role
Competitive pay
Comprehensive benefits

Security Clearance Statement

This position requires a government security clearance, you must be a US Citizen for consideration.

Clearance Level

TS/SCI w/Poly

Expression of Interest

By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings.

Ability to Work Remotely

Onsite Full-time: The work associated with this position will be performed onsite at a designated Lockheed Martin facility.

Work Schedules

Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time away from the office and are in addition to our Paid Time off benefits.

Schedule for this Position

9x80 every other Friday off

Experience Level

Experienced Professional

Business Unit

SPACE

Career Area

Software Engineering

Type

Full-Time

Shift

First

Location

King of Prussia, PA (onsite)

Relocation Available

Possible

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2d ago

Staff Software Engineer - Level 4 (TS/SCI)

Lockheed Martin Corporation King of Prussia, PA

King of Prussia, PA

2d ago

Full time Senior Collaboration Engineer

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Job Description

Be a leader in satellite mission planning software at Lockheed Martin Space. As a Staff Software Engineer (TS/SCI) onsite in King of Prussia, PA, you will drive design and implementation, mentor engineers, and collaborate across Agile teams to deliver mission-critical capabilities.

Benefits

Flexible schedules
Competitive pay
Comprehensive benefits

Responsibilities

Collaborate with a high-performing software team to develop, enhance, and sustain satellite mission planning capabilities.
Design, develop, test, and demonstrate mission planning software for internal and external customers.
Serve as a Satellite Mission Planning SME, providing technical leadership on concepts, algorithms, workflows, and implementations.
Lead the design and implementation of complex mission planning features aligned with requirements and system architecture.
Support requirements analysis, architecture development, trade studies, and software design reviews.
Mentor software engineers, sharing mission planning domain knowledge and best practices in design and implementation.
Participate in Agile activities including sprint planning, daily scrums, demonstrations, retrospectives, and release planning.
Collaborate with systems engineers, operators, architects, and customers to translate mission needs into software capabilities.

Requirements

Bachelor's degree in Computer Science, Software Engineering, Aerospace Engineering, Applied Physics, Mathematics, or a related technical discipline, or equivalent experience.
Extensive experience in satellite mission planning, mission scheduling, resource allocation, or spacecraft operations.
Demonstrated expertise in design, development, and implementation of mission planning algorithms and software systems.
Experience serving as a technical lead or providing technical direction for software development efforts.
Experience developing software using C#, Java, or similar object-oriented languages.
Experience working within Agile software development teams.
Active TS/SCI security clearance with either a favorable polygraph adjudication or agreement to submit to a polygraph; US Citizenship required.

Technologies

C#, Java
GitLab CI/CD

Security and eligibility

Clearance level: TS/SCI with Polygraph. U.S. Citizenship is required for consideration.

Location

King of Prussia, Pennsylvania (onsite)

Education

Bachelor's degree in a relevant technical discipline or equivalent experience.

Additional information

Expression of Interest: Applying indicates interest in this position and could be considered for other opportunities with similar skills and requirements.
Work location: Onsite full-time at a Lockheed Martin facility.
Work schedules: Various alternate schedules available, with some condensed options in addition to paid time off benefits.
Schedule for this position: 9x80 every other Friday off.
Relocation: Possible.
Equal opportunity employer: Qualified candidates will be considered without regard to protected characteristics.
Application window: Closes in 90 days; for optimal consideration, apply within 5 to 30 days of posting.
Shift: First.

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2d ago

Software Engineer, Principal - TS/SCI

Parsons Virginia

Virginia

2d ago

$125k - $225k/yr Full time Senior DevOps Engineer

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Job Description

Parsons is seeking a Principal Software Engineer (TS/SCI) to contribute to national-defense cyber development projects. This onsite role supports locations in Centreville, VA; Herndon, VA; Columbia, MD; Augusta, GA; or San Antonio, TX, with quarterly travel. An active TS/SCI clearance is required. The team emphasizes collaboration, high-quality product development, and opportunities for career growth within a dynamic security-focused environment.

Benefits

Financial Wellness
Work Life Harmony
Career Development
Veteran Support
Mind & Body
Health

Responsibilities

Design and develop innovative software code for new tools and capabilities in areas related to computer security, vulnerability research, reverse engineering, and product development
Develop and maintain low-level application and operating system projects related to software protection and host-based personal security tools
Review system architecture, and select and implement appropriate development and support tools to ensure product performance, as well as test and debug related software
Provide our customers expertise to leverage their existing software and create new capabilities
Be involved in quick reaction development with opportunities for customer interaction
Collaborate with a team that is focused on developing superior products and encouraging the career growth of its members
Be a customer focused self-starter, eager to learn as well as mentor and excel at collaborating in Agile teams

Requirements

Bachelor’s degree in Computer Science or related technical field; additional experience may suffice in lieu of degree
Minimum 10+ years Software Engineering experience
C/C++ proficiency
Strong Windows foundation/knowledge
Familiarity with Git
Ability to generate accurate documentation for developed software
Ability to collaborate and communicate effectively with a remote team
Active TS/SCI is required

Technologies

C
C++
Python
Windows
Git
Win32 API
Windows Native API
Assembly
CI/CD

Security clearance

An active Top Secret SCI security clearance is required for this position.

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10d ago

Windows Kernel Developer (TS/SCI w POLY)

Falls Technology McLean, VA

McLean, VA

10d ago

$100k - $150k/yr Full time Driver Development Engineer Git

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Job Description

Falls Technology in McLean, Virginia is seeking a skilled Windows Kernel Developer to contribute to kernel-level software initiatives for Windows systems. The role demands a TS/SCI clearance with polygraph and a strong background in low-level systems, debugging, and diagnostics to support advanced development projects. This onsite position offers a salary range of USD 100,000 to 150,000 per year.

Responsibilities

Build and debug kernel-level software for Windows systems.
This position requires deep expertise in low-level systems and diagnostics to support advanced development projects.

Requirements

TS/SCI w POLY required
Bachelor's degree or equivalent experience in Computer Science, Engineering, or a related field.
At least 3 years of professional software development experience, including design, implementation, testing, analysis, and debugging.
Demonstrated experience using software configuration management tools (e.g., Git).
Software systems development experience and understanding of OS internals in at least one of: BSD/Linux/Unix, Windows, Mac OS, Android, or RISC assembly.
At least 3 years of experience developing, testing, and debugging in C, C++, and Python.
At least 3 years of demonstrated in-depth experience developing, testing, and debugging software for Windows OS using Visual Studio IDE and Windows SDK.
Demonstrated in-depth understanding of Windows low-level systems development and API.
At least 3 years of demonstrated experience developing and testing kernel-level software for Windows.
At least 3 years of Windows Kernel-level debugging and diagnostics using tools such as Windows DDK, WinDBG, or equivalent.
Ability to obtain and maintain necessary security clearances.

Technologies

Git
C
C++
Python
Visual Studio IDE
Windows SDK
Windows DDK
WinDBG
Windows
BSD
Linux
Unix
Mac OS
Android
RISC assembly

About the Role

We are looking for a skilled Windows Kernel Developer to build and debug kernel-level software for Windows systems.

This position requires deep expertise in low-level systems and diagnostics to support advanced development projects.

Desired Qualifications

Ability to reverse engineer (RE) code.
Experience working independently and in teams in a fast-paced environment with changing priorities.
Undergraduate or graduate degree or certifications in a relevant technical field.
Demonstrated experience utilizing a diversity of development languages.
In-depth understanding and/or implementation of CNE techniques and methodologies, including application and mitigation for BSD/Linux/Unix, Windows, Mac OS, Android, or RISC assembly.
Experience applying continuous integration and automated testing tools to software development practices.
Experience with firewalls, standard operating systems features, and PSPs.
At least 3 years of experience developing and testing applications on Windows, Mac, Linux, Mobile, or Embedded platforms.

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10d ago

Full-Stack Applications Developer – Expert (TS/SCI + polygraph)

Arcadia Strategy Group LLC Chantilly, VA

Chantilly, VA

10d ago

$240k - $255k/yr Full time Backend Developer API APIs

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Job Description

Arcadia Strategy Group LLC is seeking an expert Full-Stack Applications Developer to join its Chantilly, VA on-site team. This role requires TS/SCI clearance with a polygraph and centers on building and maintaining web services, APIs, and database-connected applications using Java, Node.js, Angular and TypeScript. The position emphasizes collaboration with technical stakeholders to ensure future technology plans align with customer architectures and data transfer standards.

Responsibilities

Design, implement, and sustain web services, APIs, and database-integrated applications.
Partner with technical stakeholders to ensure technology roadmaps reflect customer architectures.
Handle data interchange and metadata using XML, JSON, or other customer-defined formats.
Create software applications as web services, with a primary focus on Java.
Engage with a stack that includes Node.js, Angular with TypeScript, Spring Boot with Hibernate and messaging, Groovy/Java on Grails, or scripting languages as needed.
Build, upgrade, and maintain APIs and REST-like interfaces.

Requirements

Develop and maintain applications that interact with Postgres, MySQL, relational databases, and cloud technologies such as AWS.
Experience working with relational and MySQL databases for data storage and retrieval.
Design, develop, and maintain software applications using Java and Python.
Implement and maintain APIs for integration between systems.
Optimize application performance, scalability, and security.
Troubleshoot and resolve software defects.
Experience with microservices, Angular front-end development, GitHub/GitLab, Jenkins, and Agile environments.

Technologies

Java
Node.js
Angular
TypeScript
Spring Boot
Hibernate
Grails
Groovy
XML
JSON
Postgres
MySQL
AWS
GitHub
GitLab
Jenkins

Compensation

Salary: USD 240,000 - 255,000 per year.

Benefits

Health insurance
401k retirement plan with employer matching
Paid leave

About Arcadia Strategy Group LLC

Arcadia Strategy Group supports federal government partners and select private sector clients with solutions that improve program efficiencies and enhance national security.