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Leidos

92 Leidos Data Scientist Jobs Hiring Near You

Leidos

Modeling and Simulation Engineer

Dayton, OH · On-site

$69K - $125K/yr

Leidos is hiring a Modeling and Simulation Engineer with an active TS/SCI clearance at Wright ... Find, review, and assess available intelligence data to drive modeling decisions * Test and ...

Leidos

Modeling and Simulation Engineer

Dayton, OH · On-site

$69K - $125K/yr

Leidos is hiring a Modeling and Simulation Engineer with an active TS/SCI clearance at Wright ... Find, review, and assess available intelligence data to drive modeling decisions * Test and ...

Leidos

Signature Modeling Engineer

Beavercreek, OH · On-site

$57K - $104K/yr

Bachelor's degree with experience in Electrical Engineering or a closely related scientific field ... Securing Your Data Beware of fake employment opportunities using Leidos' name. Leidos will never ...

Leidos

Python Developer

Columbus, OH

$107K - $195K/yr

Kudu Dynamics is Leidos Owned Company, forged out of a decade of experience in computer network ... science, Software Engineering, Computer Engineering, or related field Expertise in scripting ...

Leidos

Python Developer

Columbus, OH

$107K - $195K/yr

Kudu Dynamics is Leidos Owned Company, forged out of a decade of experience in computer network ... Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field

Leidos

Scrum Master

Beavercreek, OH · On-site

$73K - $132K/yr

Leidos is dedicated to making the world a safer place. This starts with helping our customers in ... Bachelor's degree in a technical field such as System Engineering, Computer Science, Information ...

Leidos

Hardware Test Engineer

Dayton, OH

$87K - $157K/yr

Leidos is seeking an experienced Test Engineer to support the Integrated Threat Warning Laboratory ... Managing and organizing large amounts of test data * Basic Qualifications: * Bachelor of Science ...

Leidos

Kinetics Sr Software Engineer

Beavercreek, OH · On-site

$107K - $195K/yr

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people ... Proficiency in object-oriented programming, data structures, and algorithms with C++ * Strong ...

Leidos

Scrum Master

Beavercreek, OH · On-site

$73K - $132K/yr

Leidos is dedicated to making the world a safer place. This starts with helping our customers in ... Bachelor's degree in a technical field such as System Engineering, Computer Science, Information ...

Leidos

Kinetics Sr Software Engineer

Beavercreek, OH · On-site

$107K - $195K/yr

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people ... Proficiency in object-oriented programming, data structures, and algorithms with C++ * Strong ...

Leidos

Hardware Test Engineer

Dayton, OH · On-site

$87K - $157K/yr

Leidos is seeking an experienced Test Engineer to support the Integrated Threat Warning Laboratory ... Managing and organizing large amounts of test data Basic Qualifications: * Bachelor of Science ...

Leidos

Kinetics AFSIM Analyst/Engineer

Beavercreek, OH · On-site

$87K - $157K/yr

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people ... You'll develop your skills in critical thinking, data analytics, and operations analysis while ...

Leidos

Digital Systems Engineer

Beavercreek, OH · On-site

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people ... Drive system integration by linking engineering toolsets and open-source data models across the ...

Leidos

Digital Systems Engineer

Beavercreek, OH

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people ... Drive system integration by linking engineering toolsets and open-source data models across the ...

Leidos

Digital Systems Engineer

Beavercreek, OH · On-site

$87K - $157K/yr

OR a bachelor's degree in engineering, general science, or physics with 4+ years of core systems ... Securing Your Data Beware of fake employment opportunities using Leidos' name. Leidos will never ...

Leidos

Digital Systems Engineer

Beavercreek, OH · On-site

$87K - $157K/yr

OR a bachelor's degree in engineering, general science, or physics with 4+ years of core systems ... Securing Your Data Beware of fake employment opportunities using Leidos' name. Leidos will never ...

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Leidos Jobs Information

What is it like to work at Leidos?

Leidos is a company that values innovation, collaboration, and customer satisfaction, fostering a culture of teamwork and continuous learning. The company's structure is often organized around mission-focused teams, with employees working on projects that support national security, healthcare, and environmental initiatives, often in dynamic and fast-paced environments. Working at Leidos may appeal to candidates who are passionate about making a difference in their communities and are interested in contributing to projects that have a significant impact on society.

What makes Leidos an attractive place to work?

Leidos is a leading provider of technology, engineering, and cybersecurity solutions to the U.S. government and other organizations, with a strong reputation for delivering innovative and effective solutions. The company fosters a collaborative and dynamic work environment that encourages innovation, creativity, and professional growth, with opportunities for employees to work on complex and challenging projects. By joining Leidos, individuals can contribute to making a meaningful impact in critical areas such as national security, healthcare, and environmental sustainability, while also developing their skills and advancing their careers.

Do workers at Leidos get paid breaks?

Sometimes. Only some people get paid breaks.
43% of people say they don’t get paid breaks.
Based on data from 37 people who took the Breakroom Quiz between August 2025 and July 2026.

Does Leidos pay people when they’re sick?

Sometimes. Only some people get paid when they’re sick.
35% of people say they wouldn’t get paid if they were sick but scheduled to work.
Based on data from 51 people who took the Breakroom Quiz between August 2025 and July 2026.

At Leidos, are sick days and vacation days separate paid time off?

Only some people have separate paid time off for sick days and vacation.
65% of people say they have to use vacation days when they’re out sick.
Based on data from 48 people who took the Breakroom Quiz between August 2025 and July 2026.

Is the health insurance from Leidos affordable enough for their workers?

Most people say the health insurance costs are okay.
93% of people say the health insurance costs are okay
Based on data from 43 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people get paid time off at Leidos?

Most people get paid time off work.
98% of people say they get paid time off.
Based on data from 55 people who took the Breakroom Quiz between August 2025 and July 2026.

How far ahead of time do people find out their work schedule?

Most people find out their schedule less than four weeks ahead of time.
  • 44% of people with changing schedules find out their shifts one week or less ahead of time.
  • 20% of people with changing schedules find out their shifts two weeks ahead of time.
  • 12% of people with changing schedules find out their shifts three weeks ahead of time.
  • 24% of people with changing schedules find out their shifts four weeks or more ahead of time.

Based on data from 25 people who took the Breakroom Quiz between November 2024 and March 2026.

Do workers at Leidos worry about hours?

Most people don’t worry about getting enough hours.
95% of people report they don’t worry about getting enough hours.
Based on data from 42 people who took the Breakroom Quiz between April 2025 and April 2026.

Do Leidos workers get to choose the shifts they work?

Some people don’t get to choose which shifts they work.
45% report that they don’t have enough control over which shifts they work.
Based on data from 38 people who took the Breakroom Quiz between March 2025 and March 2026.

How easy is it for Leidos workers to change shifts?

Most people find it easy to change shifts.
79% of people report that it’s easy to change shifts if they need to.
Based on data from 53 people who took the Breakroom Quiz between December 2024 and April 2026.

How easy is it to get time off at Leidos?

Most people find it easy to get time off.
88% of people report it’s easy to get time off.
Based on data from 56 people who took the Breakroom Quiz between June 2025 and June 2026.

Do Leidos managers change schedules at the last minute?

Most managers don’t change people’s schedules at the last minute.
100% of people say their manager doesn’t change their shift schedule at the last minute.
Based on data from 42 people who took the Breakroom Quiz between April 2025 and April 2026.

Do jobs at Leidos spill into time workers aren’t paid for?

Rarely. The job doesn't usually spill into unpaid time.
18% of people report that their job takes up time that they don’t get paid for.
Based on data from 44 people who took the Breakroom Quiz between April 2025 and April 2026.

How easy is it to take sick days at Leidos?

Most people find it easy to take sick days.
88% of people report that it’s easy to take time off if they are sick.
Based on data from 52 people who took the Breakroom Quiz between August 2025 and July 2026.

Is a Leidos job good for students?

Most students say this is a good place to work if you’re studying.
81% of students report this is a good place to work if you’re studying.
Based on data from 16 people who took the Breakroom Quiz between December 2024 and April 2026.

Is working at Leidos good if you’re a parent or caregiver?

Most parents and caregivers say this is a good place to work.
87% of people who care for a child or other relative report this is a good place to work.
Based on data from 55 people who took the Breakroom Quiz between December 2024 and July 2026.

Do people at Leidos feel treated with respect by their managers?

Most people feel treated with respect by their managers.
83% of people say they’re treated with respect by their managers.
Based on data from 52 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people at Leidos get to take their breaks without interruption?

Most people get breaks without interruption.
76% of people report that they get to take their breaks without interruption.
Based on data from 45 people who took the Breakroom Quiz between August 2025 and July 2026.

Is it stressful to work at Leidos?

Most people feel stressed out here.
67% of people say they often feel stressed out at work.
Based on data from 52 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people at Leidos enjoy their jobs?

Most people enjoy their job.
76% of people report they enjoy their job.
Based on data from 45 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people at Leidos recommend working with their team?

Only some people recommend working with their team.
47% of people report that they wouldn’t recommend working with their immediate team to a friend.
Based on data from 55 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people get enough training when they start at Leidos?

Some people didn’t get enough training when they started.
37% of people report they didn’t get enough training when they started working here.
Based on data from 52 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people get support to advance at Leidos?

Only some people are given support to advance their career here.
In the last year, 43% of people report not being given support to advance their career here.
Based on data from 51 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people think Leidos’s headquarters understands what’s happening where they work?

Most people think headquarters doesn’t understand what’s happening where they work.
73% of people think that this employer’s headquarters or owners don’t have a good understanding of what’s really happening where they work.
Based on data from 48 people who took the Breakroom Quiz between August 2025 and July 2026.

Do workers feel well informed about how Leidos is doing?

Only some people feel well informed about how the company is doing.
35% of people feel that they aren’t kept well informed about how the company is doing as a whole.
Based on data from 51 people who took the Breakroom Quiz between August 2025 and July 2026.
What other companies are hiring for Data Scientist jobs?
What are the most popular jobs at Leidos?
What are the most popular categories at Leidos?
Infographic showing various Data Scientist job openings at Leidos in the United States as of August 2026, with employment types broken down into 93% Full Time, 1% Part Time, and 6% Contract. Highlights an 95% Physical, 2% Hybrid, and 3% Remote job distribution.

Scientist I - Inhalation Toxicologist Research Scientist

Leidos

Dayton, OH • On-site

Full-time

Re-posted 18 days ago

Leidos rating

8.3

Company rating: 8.3 out of 10

Based on 151 frontline employees who took The Breakroom Quiz

77th of 485 rated business services

Job description

Are you a skilled Scientist in Inhalation Toxicology Research looking for a new opportunity? Look no further than Leidos!
Leidos Health & Civil Sector is seeking an experienced Research Scientist, Scientist I, to perform Inhalation Toxicology Research in support of biomedical research in the Environmental Health Effects Laboratory (EHEL) at the Naval Medical Research Unit Dayton, OH. The successful candidate will serve as Project Lead in cell-based and animal use research studies on environmental and occupational exposures to identify health effects before health and operational performance is compromised in the warfighter.
Are you ready for unique and exciting work?
Research efforts will require study design, medical and scientific authoring and editing of research proposals, animal use (IACUC) protocols, technical and scientific reports, responses to grants and funding calls; scientific management, coordination of technical review meetings and the preparation and presentation of point papers, technical reports, and other briefings resulting from these meetings, preparation and support of technical summaries and publications resulting from research activities; presentation of research findings at scientific meetings / professional conferences; writing, reviewing, editing, and submitting peer-reviewed articles and technical reports.
Your Main Objectives:
  • Work with a diverse team of scientists, including toxicologists, engineers, neuroscientists, chemists, psychologists, animal behaviorists and biologists, to accomplish the mission of understanding the health effects of operating in military settings.
  • Design and conduct scientific research on the inhalation toxicological effects of exposure to chemicals/mixtures; these may be in combination with extreme environmental hazards or stressors, to include temperature, humidity, altitude, vibrations, and noise, and/or physical demand.
  • Utilize animal models to evaluate the short- and long-term health and performance effects of acute and chronic exposure to chemicals, mixtures, environmental hazards and stressors.
  • Provide scientific expertise in the field of inhalation toxicology regarding all organ systems, including pulmonary, neurological/cognitive and developmental and reproductive effects.
  • Identify, devise, propose and execute military relevant studies and collect data from animal subjects (primarily rodent)
  • Develop appropriate exposure systems, including analytical techniques for identifying toxicants and/or aerosols.
  • Contribute substantially to the design and building toxicant generation and other exposure systems.
  • Perform risk assessments based on collected toxicological data.
  • Assist other investigators in the design and execution of research protocols on inhalation toxicology and environmental exposure issues of interest to the Navy.
  • Operate and maintain standard and specialized laboratory equipment.
  • Assist and educate entry level research assistant personnel in the understanding and performance of their duties.
  • Collect pulmonary/respiratory data, or other appropriate endpoints, from animal subjects following exposure.
  • Perform statistical analyses using SigmaPlot, Statistical Package for the Social Sciences (SPSS) or Statistical Analysis Software (SAS). Examples of the typical analyses required for successful performance include T-tests, Chi-Square, Analyses of Variance, Multivariate Analyses of Variance, analyses of covariance, multivariate analyses of covariance, correlations, linear regressions, multiple linear regressions, and power analyses.
  • Use multiple computer software packages to create spreadsheets and perform statistical routines.
  • Independently and proactively prepare mission-relevant proposal applications for toxicological, physiological, psychological, medical, and performance studies.
  • Independently and plan, manage, oversee, and carry out research proactively ensuring that those assisting in project coordination are fully informed and able to perform proposed/funded research, meeting all project deadlines.
  • Develop technical reports, presentations, and publications.
  • Be willing and able to work nontraditional hours (e.g., nights, weekends) as needed.
  • Perform other duties as needed.

If this sounds like an environment where you can thrive, keep reading for the keys to success!
Qualifications:
  • Ph.D. in Toxicology or a related scientific field with specialized study in inhalation, pulmonary and/or respiratory toxicology
  • Extensive experience proposing and conducting original research, including the design and implementation of protocols with animal models, data collection and analysis, and report production.
  • Extensive experience in toxicology studies utilizing small animals, with a specialty in inhalation research.
  • Strong background in toxicology research methodology with experience in research methods, design, and statistical analysis in a research setting.
  • Proficiency in Microsoft Outlook, Word, PowerPoint, and Excel.
  • Proficiency in the use of common statistical analysis software, to include SigmaPlot, SPSS and SAS.
  • Strong technical writing background with experience in writing research proposals, standard operating procedures, animal use protocols for approval by the Institutional Animal Care and Use Committee (human use/Institutional Review Board protocols a plus), technical reports, journal articles, and conference papers.
  • Excellent communication and interpersonal skills and ability to work cooperatively in a team environment.
  • Self-motivated and capable of working independently and with others.
  • Ability to obtain Secret Clearance
  • US Citizen

Preferred Qualifications:
  • PhD plus 3+ years of relevant experience
  • Experience in a military or medical research environment is highly desired
  • Demonstrated experience and success responding to research funding and grant requests for proposals.
  • Experience in modeling (e.g., quantitative-structure activity relationships, benchmark dose, etc.) a plus.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.
Original Posting:
April 23, 2026
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range $69,550.00 - $125,725.00
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

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About Leidos

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At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable practices. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Reston, VA, US

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