Description Are you passionate about building solutions for our greatest national security challenges? Are you searching for engaging work with an employer that prioritizes impact, innovation, and personal development? D…
Software Engineer for Sensor/Weapon Command & Control
Laurel, Maryland, United States · On-site
Senior
Description Are you interested in tackling the challenges in defending our nation against cruise, ballistic, and hypersonic missile threats? Do you want to help ensure that our nation’s afloat and ashore forces can…
Pediatric Urgent Care Nurse Practitioner or Physician Assistant
District Heights, Maryland, United States · On-site
$100k–$180k/yr
Mid level
It's fun to work in a company where people truly BELIEVE in what they're doing! We're committed to bringing passion and customer focus to the business. SummaryThere’s nothing more rewarding than working alongside colleag…
Pediatric Urgent Care Nurse Practitioner or Physician Assistant
District Heights, Maryland, United States · On-site
$100k–$180k/yr
Mid level
It's fun to work in a company where people truly BELIEVE in what they're doing! We're committed to bringing passion and customer focus to the business. SummaryThere’s nothing more rewarding than working alongside colleag…
Description Are you someone that enjoys working in a highly collaborative, dynamic environment? Do you have strong communication, organizational and analytical skills? Are attention to detail, accuracy and effective part…
Skills: Contract management, Negotiation, Legal drafting, Non-disclosure agreements, Contract law
Description Do you love building and prototyping robust electrical systems? Are you passionate about providing real impact to the country’s toughest national security problems? If so, we're looking for someone like…
Description Do you love to develop creative and impactful communications and networked systems solutions for the nation's most critical challenges? Are you searching for meaningful work in software engineering? If so, we…
Skills: Software engineering, Network software development, Linux, TCP/IP, C
Overview ERP International, LLC (www.erpinternational.com) is currently seeking an Intermediate Full-Stack Developer with Java, Spring Boot and React experience. You will be part of a talented software development team s…
Skills: Java, Spring Boot, React, Microservices, DevSecOps
N&S LOCATING SERVICES d.b.a. S&N
Locate Technician-Laurel, Maryland
Laurel, Maryland, United States · On-site
$20/hr–$25/hr
Mid level
Job DetailsJob Location: Laurel, MD 20707Salary Range: $20.00 - $25.00 HourlyDepartment: Operations Job Status Full Time FLSA Status: Non-Exempt Reports To: Area or Local Manager Work Schedule: As assigned Amount of Trav…
Skills: Locate Ticket Management, Facility Records Analysis, Underground Infrastructure Knowledge, Electromagnetic Theory, Customer Service
We’re seeking a Customer Service Associate to join our team and deliver a great shopping experience for every customer. Duties include, but are not limited to, the following: Assist customers with questions and recommend…
Specialized Infrastructure Services - ISSO Support Systems Engineer
Laurel, Maryland, United States · On-site
$176k–$282k/yr
Senior+
Responsibilities Peraton is hiring an ISSO Support Systems Engineer to join our Cyber Mission business unit in Jessup, MD. As a Systems Engineer on our team, you will support one of the largest enterprise-wide engineerin…
Skills: Information System Security, Risk Management Framework, Vulnerability Management, Security Control Validation, XACTA
Overview Lead with Purpose as a Clinic Director at ATI Physical Therapy! Are you a licensed Therapist ready to take your career to the next level? Join ATI, the leaders in physical therapy, and inspire a team dedicated t…
Skills: Clinic Operations, Team Leadership, Patient Assessment, Performance Management, Patient Care Standards
Description Do you love developing creative solutions to challenging aero and thermal structural problems? Are you looking for a unique opportunity to impact advances in the country’s groundbreaking coordinated air…
Skills: Finite Element Analysis, First Principles Analysis, Linear Structural Analysis, Non-linear Structural Analysis, Static Analysis
Principal Systems Engineer (Specialized Infrastructure Services)
Laurel, Maryland, United States · On-site
Senior+
Themis Insight solves difficult business, IT, and analytic problems by addressing the whole problem – not just the symptoms – using interdisciplinary approaches that are both practical and innovative. We provide fresh al…
Skills: Systems Engineering, Windows Administration, VMWare, Network Configuration, Resource Management
Description Are you passionate about collaborating with experienced engineers to design and develop the next generation of weapon systems? Can you design and deliver cutting-edge guidance and control solutions, and guide…
Skills: Guidance and control, Control theory, System dynamics, Nonlinear dynamics, Autonomous systems
Responsibilities Shape Your Future with the Nation's Radiology Leader! Join the largest outpatient radiology company in the U.S., where your expertise meets opportunity. Be part of a dynamic team delivering world-class p…
Skills: Radiologic exams, Patient care, Imaging technology, Communication, Problem solving
Description Are you a detail-oriented person who is skilled in technical data management and manipulation? Are you seeking a role where your data products are directly and meaningfully relied upon to support critical U.S…
Skills: Data management, Data manipulation, Technical data processing, Microsoft Word, Microsoft Excel
2026 PhD Graduate - Mechanical-Fluids Analysis Engineer, Shipboard Systems Team
Laurel, Maryland, United States · On-site
Entry level
Description Are you excited by the challenge of performing modeling and simulation and analysis on complex weapon systems in support of the U.S. Navy? Do you have a strong desire to work with data from operational U.S. s…
Computational Scientist – Metasurfaces, Photonics, and Inverse Design
Laurel, Maryland, United States · On-site
Entry level
Description Do you enjoy pushing the limits of computational science for modeling physical systems? Are you excited by the challenge of designing modern electromagnetic and photonic devices—driving the future of co…
Store - DC-LAUREL, MD Build customer relationships while creating a memorable framing solution for their art. Help customers shop our store and be able to find what they’re looking for. Provide a safe, clean and clutter-…
Sign up with Clera and we'll reach out the moment a role actually fits you — no more spraying applications into the void.
Full-time
postgraduate degree
Retirement contributions, Education assistance program, Medical insurance, Dental insurance, Vision insurance, Life insurance
Posted 86d ago
Apply by Jun 18
~40 hrs/week
Responsibilities
You will collaborate with software engineers and data scientists to build ontologies and capabilities for national security mission needs. Additionally, you will engage stakeholders to define requirements and implement quality assurance and validation practices for ontology content.
Requirements
Candidates must hold at least a Master's degree in a relevant field such as Philosophy, Computer Science, or Linguistics. Proficiency in OWL, RDF, SPARQL, and Python is required, along with the ability to obtain a TS/SCI security clearance.
Full job description
Description
Are you passionate about building solutions for our greatest national security challenges?
Are you searching for engaging work with an employer that prioritizes impact, innovation, and personal development?
Do you value working in a creative and collaborative environment?
If so, we're looking for someone like you to join our team at APL.
The Threat Analytic Systems (QAI) Group wants talented staff who can work as part of a team to provide our nation with ground-breaking capabilities that bridge the gaps between data, real-world events and people, and prediction of events of national importance. We need talented engineers, scientists, and ontologists with curiosity and a drive for learning!
As a member of our team…
You will work on a team with software engineers and data scientists to build ontologies and capabilities for applied national security mission needs.
You will provide expert evaluation and review of ontology content.
You will engage stakeholders to determine ontology requirements.
You will work with subject matter experts to craft ontology content.
You will contribute to and implement quality assurance and validation practices.
Qualifications
You’ll meet our minimum requirements if you…
Have a Master's degree in a field relevant to Ontology. Relevant degree fields may include Philosophy, Computer Science, Cognitive Science, Public / Social Policy, Mathematics, Logic, or Linguistics.
Are proficient with any of the following: Ontology Web Language (OWL), Resource Description Framework Schema (RDFs), and Resource Description Framework (RDF)
Are proficient with SPARQL
Have experience building domain ontologies based on a top-level ontology
Are able to weigh tradeoffs between semantic expressivity and project-specific implementation strategies
Have experience with Python
Are familiar with ontology editors (e.g., TopBraid Composer, Protégé, ROBOT), or ontology editing software packages (e.g. rdflib, Apache Jena, Sesame, RDF4J)
Have experience with formal representations of logical reasoning and inference
Can work with loosely defined or high-level requirements
Can work on multiple dynamic projects to support evolving national security requirements
Have strong problem solving, analytical, and organizational skills
Have demonstrated initiative
Have experience working successfully independently or within a team environment
Have excellent written and verbal communication skills
Have the ability to obtain a TS/SCI level security clearance. If selected, you will be subject to a government security clearance investigation and must meet the requirements for access to classified information. Eligibility requirements include U.S. citizenship.
You’ll go above and beyond our minimum requirements if you have…
A PhD in a field relevant to Ontology. Relevant degree fields may include Philosophy, Computer Science, Cognitive Science, Public / Social Policy, Mathematics, Logic, or Linguistics
Experience working with a software engineering team to deliver ontology-driven software features
Experience with any of the following: Basic Formal Ontology (BFO); The Common Core Ontologies (CCO); W3C standards such as SOSA/SSN and the Time Ontology; ontologies in the Open Biological and Biomedical (OBO) Foundry; as well as other semantic web standards, such as Dublin Core, SKOS, QUDT, and GeoSPARQL
Experience with triple stores or graph databases (e.g., GraphDB, Stardog, Jena Fuseki)
Experience using AI tools to generate high quality ontology content
Experience developing AI tools that use ontologies or knowledge graphs
Experience with semantic validation languages (e.g. SHACL, SPIN)
Experience with software version management using GIT
Experience with machine learning, natural language processing, or in the normalization/integration of heterogeneous data sources
Coursework in data structures, databases, metaphysics, knowledge representation, algorithms, mathematical logic, mereotopology, or software programming
Experience with project management and/or leading technical teams
About Us
Why Work at APL?
The Johns Hopkins University Applied Physics Laboratory (APL) brings world-class expertise to our nation’s most critical defense, security, space and science challenges. While we are dedicated to solving complex challenges and pioneering new technologies, what makes us truly outstanding is our culture. We offer a vibrant, welcoming atmosphere where you can bring your authentic self to work, continue to grow, and build strong connections with inspiring teammates.
At APL, we celebrate our differences of perspectives and encourage creativity and bold, new ideas. Our employees enjoy generous benefits, including a robust education assistance program, unparalleled retirement contributions, and a healthy work/life balance. APL’s campus is located in the Baltimore-Washington metro area. Learn more about our career opportunities at https://www.jhuapl.edu/careers.
All qualified applicants will receive consideration for employment without regard to race, creed, color, religion, sex, gender identity or expression, sexual orientation, national origin, age, physical or mental disability, genetic information, veteran status, occupation, marital or familial status, political opinion, personal appearance, or any other characteristic protected by applicable law. APL is committed to providing reasonable accommodation to individuals of all abilities, including those with disabilities. If you require a reasonable accommodation to participate in any part of the hiring process, please contact [email protected].
The referenced pay range is based on JHU APL’s good faith belief at the time of posting. Actual compensation may vary based on factors such as geographic location, work experience, market conditions, education/training and skill level with consideration for internal parity. For salaried employees scheduled to work less than 40 hours per week, annual salary will be prorated based on the number of hours worked. APL may offer bonuses or other forms of compensation per internal policy and/or contractual designation. Additional compensation may be provided in the form of a sign-on bonus, relocation benefits, locality allowance or discretionary payments for exceptional performance. APL provides eligible staff with a comprehensive benefits package including retirement plans, paid time off, medical, dental, vision, life insurance, short-term disability, long-term disability, flexible spending accounts, education assistance, and training and development. Applications are accepted on a rolling basis.
The Johns Hopkins Applied Physics Laboratory (APL) is a not-for-profit university-affiliated research center (UARC) that provides solutions to complex national security and scientific challenges with technical expertise and prototyping, research and development, and analysis.
Offices: 11100 Johns Hopkins Road, Laurel, Maryland 20723, US