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Are you interested in working with innovative tools to advance radio frequency (RF) signature analysis capability? Do you enjoy working in a creative environment with an integrated team of highly motivated radar engineers, scientists, and software developers? If so, we are looking for someone like you to join our team at APL!

In this role, you will participate in evolving the state of the art in high fidelity RF signature modeling. You will work on a team utilizing high-performance computing environments to develop detailed signature characterizations that are used in a variety of applications. In addition, you will collaborate with model users and system engineers to enable best use of products.

As a Radar Cross Section Engineer, you will…

• Use computational electromagnetics codes to develop radio frequency signatures of various radar targets.
• Participate in developing and testing advances in computational electromagnetics codes and the development of new models of various phenomenologies.
• Create and/or modify Computer Aided Designs (CAD) of objects to be used in various computational electromagnetics codes.
• Plan and conduct RCS measurements of various test articles at national facilities.

You meet our minimum qualifications for the job if you have a...

• Bachelor’s degree in Electrical Engineering, Physics, or equivalent technical degree
• At least 2 years of engineering-related experience in computational electromagnetic theory and computational methods/mathematics
• Familiarity with Matlab, Python, or similar mathematical analysis tools
• Good interpersonal and communication skills
• Willingness to travel up to 5% of the time if needed
• Are able to obtain an Interim Secret level security clearance by your start date and can ultimately obtain a Top Secret level 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...

• Master’s or Ph.D. degree in Electrical Engineering, Physics, or equivalent technical field
• 3+ years of professional experience in radar, aerospace, RF signatures, or other technical-related systems engineering domain
• Strong background in Matlab, Python, or similar mathematical analysis tools
• Leadership experience or interest in assuming leadership roles
• Experience in CAD software (Pro-Engineer, AutoCAD, etc.).
• Current TOP SECRET clearance.

#LI-KW1

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.

Are you experienced with software development for test and integration of new capabilities onto Electronic Warfare systems?

Are you passionate about commercial and/or military communication systems, including terrestrial and non-terrestrial networks?

Are you motivated to work on a multidisciplinary team to help solve some of the most complex problems facing the United States and its allies in the Radio Frequency (RF) spectrum?

If so, we're looking for someone like you to join the Electronic Warfare Systems Group (KAB) within the Force Projection Sector (FPS)!

Our team is responsible for developing, integrating, testing and evaluating algorithms targeted at countering UAS (unmanned aerial systems) and RCIED (remote-controlled improvised explosive devices) threats to protect our warfighters and allies.

As a Communications Electronic Warfare (EW) Systems Developer, you will…

• Develop algorithms for deployment on tactical hardware: apply Digital Signal Processing (DSP) and wireless protocol techniques and software best practices to create and analyze signals of complex communication systems.
• Test and evaluate: Operate lab equipment (spectrum analyzers, signal generators, software defined radios (SDR or protocol analyzers) to verify and benchmark the software you develop.
• Analyze trade-offs for performance and hardware utilization: Turn test data into actionable insights on performance, hardware utilization, and system‑level trade.
• Apply your knowledge: Provide technical expertise during field and laboratory test and evaluation events.
• Work on a team: You’ll be part of a high‑performing, knowledge‑rich team that thrives on collaboration and shared success.

You meet our minimum qualifications for the job if you...

• Have a Bachelor’s degree in Computer Engineering, Electrical Engineering, Computer Science, or another relevant technical field.
• Have at least five years of relevant experience developing and integrating code (C, C++, Python, MATLAB) for communications, electronic warfare, or other tactical systems.
• Have experience in hardware and software testing with embedded communication systems.
• Have demonstrated the ability to document and maintain software code bases using tools such as: Gitlab, Bitbucket, or Confluence.
• Have demonstrated strong verbal and written communication skills as well as the ability to work in a multifunctional, collaborative team environment.
• Are willing to occasionally travel to off-site facilities for integration and test events.
• Are able to obtain an Interim Secret level security clearance by your start date and can ultimately obtain a TS/SCI level 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 Master's degree or PhD in Computer/Electrical Engineering or Computer Science, or another relevant technical field.
• Have familiarity with the Layer 1 – 3 protocol stack for cellular standards such as 4G/LTE and 5G.
• Have experience with generating C or C++ code from MATLAB using CodeGen.
• Have experience with software defined radios, GNURadio, and open-source protocol stacks such as srsRAN and OAI.
• Hold an active Secret security clearance or higher.

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.

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.

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
• Hold an active TS/SCI security clearance and can ultimately obtain a TS/SCI+poly level 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. 
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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

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.

Are you looking to be on the cutting edge of new and innovative ways to deploy active sonar capabilities within the Maritime Surveillance domain?

Are you passionate about working with groundbreaking, next-generation technologies?

Do you want to make significant contributions to improve essential U. S. Naval capabilities through test and evaluation, and operations analysis?

If so, we're looking for someone like you to join us at APL.

We are seeking a dynamic, creative, and analytical candidate to help us assess the design and influence the capability development of the U.S. Navy's Maritime Surveillance Systems (MSS) Low Frequency Active (LFA), Compact LFA (CLFA), and prototype Deployable Active Systems. We are looking to push the boundaries of system capabilities by providing critical support to the U.S. Navy's Advanced Development, integration and testing community. Your contributions will help us transform data into knowledge, enabling decision makers to make informed choices on the future direction of the Navy's surveillance-based mission systems. You will join a hardworking and expert team of engineers, subject matter experts and software developers in an environment that values creativity and innovation.

As a Maritime Surveillance Systems Engineer/Analyst, you will...

• Work with system developers and analysis team members to conduct lab-based and at-sea assessment of functional and operational Maritime Surveillance Systems CLFA, LFA and prototype Deployable Active Systems capabilities.
• Ensure test scope, analysis methodology, appropriate measures of performance and data required to execute analysis are comprehensive.
• Apply surveillance domain experience to develop new system display concepts, capabilities, and functions to improve system performance.
• Research, investigate, and experiment with next-generation technologies and look for creative applications in unconventional ways.
• Apply systems engineering expertise in support of future MSS LFA, CLFA and prototype Deployable Active Systems requirements and capability development to inform impending development direction.
• Coordinate with analysts to contribute to evaluation of fielded MSS LFA, CLFA and prototype Deployable Active Systems.
• Liaise between JHU/APL, acquisition sponsors and fleet operational commands to inform future development decision-making and optimize operational utility and MSS LFA, CLFA and prototype Deployable Active Systems employment.

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.

Are you interested in applying your signal processing experience to reverse engineer systems that communicate wirelessly?

Do you love working on a multi-disciplinary set of problems and delivering new capabilities that are deployed in the real world?

If so, we want you to join our group of offensive cyber experts! We seek tenacious self-starters who will develop their technical skills in service of inventive capabilities and novel RF solutions. We work in a dynamic, mission driven environment that has real world impact. Our work environment offers many opportunities for collaboration, and in our culture, we celebrate curiosity.

As a Reverse Engineer for RF Systems, you will...

• Reverse engineer the software, firmware, and hardware that comprise target systems for understanding wireless behavior
• Develop prototypes of novel signal processing approaches
• Work in teams to modify device firmware and software to communicate in alternative ways
• Operationalize developed code by thoroughly testing, documenting, and integrating with sponsor systems
• Propose promising ideas for internal and external funding opportunities
• Share and enhance knowledge by clearly articulating ideas through papers and presentations to government decision makers, team members, and senior management

You meet our minimum qualifications for the job if you...

• Possess a Bachelor's in Computer Science, Electrical Engineering, Computer Engineering, or other degree relevant to the duties as described above
• Have at least 3 years of experience writing assembly language, C, or C++ code that runs directly on embedded systems or integrates with real-time operating systems (RTOSes)
• Have experience with protocol reverse engineering and complex communication systems
• Have extensive experience with digital signal processing algorithms and are capable of (and excited by!) hypothesizing, prototyping, and extracting data from waveforms
• Are an outstanding communicator in both written and verbal forms
• Are able to acquire a Secret level security clearance by your start date and can ultimately acquire a TS/SCI level 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 Master's or Ph.D. in Computer Science, Electrical Engineering, Computer Engineering, or related field
• Have 6+ years of relevant experience
• Have experience with VHDL, Verilog, or other FPGA development languages
• Have developed novel concepts based on analyzing wireless systems
• Have experience with field testing or leading technical teams
• Hold an active TS/SCI security clearance

#LI-AG1

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.