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Polygraph Jobs in Philadelphia, PA (NOW HIRING)

CACI

Staff AI/ML Engineer

King Of Prussia, PA

$227K/yr

TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local * * * The Opportunity: This position is for a Staff AI/ML Engineer looking for new ...

CACI

Enterprise Systems Engineer

King Of Prussia, PA · On-site +1

$82K - $172K/yr

Active TS/SCI Clearance with an Adjudicated Polygraph Current IAT Level II or III certification (i.e. Security+, CISSP, or CASP) Demonstrated interpersonal skills with an ability to engage with ...

New

CACI

Full Stack Software Engineer

King Of Prussia, PA · On-site

$189K/yr

TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local * * * The Opportunity: We are seeking a talented and motivated Senior Software Engineer to ...

CACI

Agentic AI Software Engineer

King Of Prussia, PA · On-site

TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local Anticipated Posting End: 12/31/2026 The Opportunity: We are seeking a talented and highly ...

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All JobsPolygraph JobsPolygraph Jobs in Philadelphia, PA

Polygraph information

See Philadelphia, PA salary details

$11

$19

$26

How much do polygraph jobs pay per hour?

As of Sep 2, 2026, the average hourly pay for polygraph in Philadelphia, PA is $19.82, according to ZipRecruiter salary data. Most workers in this role earn between $16.97 and $23.03 per hour, depending on experience, location, and employer.

What is a polygraph examiner?

A polygraph examiner is a trained professional who uses polygraph instruments, commonly known as lie detectors, to assess whether individuals are being truthful or deceptive during interviews. They measure physiological responses such as heart rate, blood pressure, respiration, and skin conductivity while asking a series of questions. Polygraph examiners typically work for law enforcement agencies, private firms, or government organizations, and they must adhere to strict ethical guidelines. Their findings are used as investigative tools, though polygraph results are not always admissible in court.

What are the key skills and qualifications needed to thrive as a polygraph examiner?

To thrive as a Polygraph Examiner, you generally need a background in criminal justice or psychology, specialized training from an accredited polygraph school, and often law enforcement experience. Familiarity with polygraph instruments, computerized analysis software, and relevant certification (such as from the American Polygraph Association) is typically required. Strong interpersonal skills, keen observation, and ethical judgment help examiners build rapport and accurately interpret examinee responses. These skills and qualifications ensure reliable testing, uphold legal standards, and maintain public trust in investigative processes.

What are some common challenges faced by polygraph examiners during interviews, and how can they be managed?

Polygraph examiners frequently encounter challenges such as nervousness or anxiety in examinees, attempts at countermeasures to distort results, and the need to maintain objectivity during sensitive investigations. Managing these challenges involves building rapport to ease examinee anxiety, adhering strictly to standardized testing protocols, and staying vigilant for signs of manipulation. Regular training and peer reviews are also essential to uphold ethical standards and ensure accurate, unbiased results.

What is the difference between Polygraph vs Criminal Investigator?

AspectPolygraphCriminal Investigator
Required CredentialsNone mandatory; certification availableLaw enforcement academy, police academy, or related training
Work EnvironmentTesting rooms, law enforcement officesCrime scenes, courts, offices
Industry UsageUsed in law enforcement, security, and private sectorsLaw enforcement agencies, government
Common Search/ComparisonOften compared for investigative rolesRelated to investigative work involving deception detection

The main difference is that a Polygraph specializes in lie detection through testing, often with minimal formal credentials, while a Criminal Investigator conducts broader investigations, typically requiring law enforcement training and experience. Both roles are integral to law enforcement but serve different functions within criminal justice.

How do you become a polygraph examiner?

To become a polygraph examiner, individuals typically need to complete specialized training through a recognized program or agency, which covers polygraph techniques, ethics, and legal considerations. Most states or organizations also require certification or licensing, which involves passing written and practical exams, and maintaining ongoing education to stay current with industry standards.

Is being a polygraph examiner a good job?

Polygraph examiners conduct lie detector tests to assist in investigations or employment screenings. The job requires specialized training, certification, and attention to detail, often involving irregular hours and handling sensitive information. It can be a stable career for those interested in forensic or law enforcement-related fields.

What are popular job titles related to Polygraph jobs in Philadelphia, PA?

For Polygraph jobs in Philadelphia, PA, the most frequently searched job titles are:

What job categories do people searching Polygraph jobs in Philadelphia, PA look for?

The top searched job categories for Polygraph jobs in Philadelphia, PA are:

What cities near Philadelphia, PA are hiring for Polygraph jobs?

Cities near Philadelphia, PA with the most Polygraph job openings:

Polygraph jobs near you
Infographic showing various Polygraph job openings in Philadelphia, PA as of August 2026, with employment types broken down into 88% Full Time, 6% Part Time, and 6% Contract. Highlights an 94% In-person, and 6% Remote job distribution, with an average salary of $41,228 per year, or $19.8 per hour.

Staff AI/ML Engineer

CACI International, Inc.

King Of Prussia, PA • On-site

$227K/yr

Full-time

Medical, Retirement, PTO

Re-posted 17 days ago

Job description

Job Title: Staff AI/ML Engineer
Job Category: Science
Time Type: Full time
Minimum Clearance Required to Start: TS/SCI with Polygraph
Employee Type: Regular
Percentage of Travel Required: Up to 10%
Type of Travel: Local
* * *
The Opportunity:
This position is for a Staff AI/ML Engineer looking for new challenging problems. You should have experience working in research teams prototyping and developing AI/ML algorithms. You will support the development of AI/ML algorithms in a multitude of disciplines including object detection/classification, natural language processing, time series prediction/classification, reinforcement learning, and large language models.
Responsibilities:
  • Implement machine learning algorithms as part of a small interdisciplinary team
  • Analyze large multi-domain datasets including images, text, time series, and graph data
  • Review and apply cutting-edge research publications
  • Create technical documentation and user guides
  • Understand training and deployment pipelines including AWS services
  • Provide training and mentoring to team members

Qualifications:
Required:
  • Active TS/SCI U.S. Government Security Clearance with adjudicated Polygraph
  • B.S. in machine learning, computer science, mathematics, or related field
  • 8+ years of AI/ML development experience
  • Proficiency with Python and ML libraries such as PyTorch, Lightning, OpenCV, NumPy, Polars
  • Experience with supervised and unsupervised learning
  • Experience with deep learning architectures
  • Experience contributing on a team using version control (e.g. git, GitLab, Bitbucket)

Desired:
  • M.S. or PhD in relevant technical field
  • Experience leading interdisciplinary teams
  • Experience with MCP, Microsoft Agent Framework, HuggingFace, LangChain, OpenCV
  • Experience with GenAI Ops techniques (e.g. LLM-as-a-judge) and frameworks (e.g. LangFuse, MLFlow, Arize Phoenix)
  • Experience with LLMs, Transformers, YOLO, GANs, Reinforcement Learning Linux and AWS experience
  • Experience with CUDA and Python libraries such as CuPy, Numba, CuSignal, CuDF, etc.
  • Experience in application deployment, virtualization, and containerization (e.g. Podman, Docker, Kubernetes, Rancher)
  • Familiarity with using AWS cloud computing resources such as EC2, S3, Lambda, etc.

What You Can Expect:
A culture of integrity.
At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation.
An environment of trust.
CACI values the unique contributions that every employee brings to our company and our customers - every day. You'll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.
A focus on continuous growth.
Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground - in your career and in our legacy.
Pay Range:
There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.
The proposed salary range for this position is:
$108,400 - 227,500 USD
CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.

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