Senior Principal Data Scientist

Your greatest work is ahead!

Leidos Defense Systems Sensor Systems Analysis & Engineering (SSA&E) Portfolio is seeking an experienced Data Scientist to serve as a machine learning (ML) SME within our Sensor Systems Analysis and Engineering Department.

You will join a diverse team of engineers scientists and software developers to create unique solutions for complex problems. Our team tackles critical challenges that support the current and future defense of our nation including the rapidly growing domains of machine learning and artificial intelligence (ML / AI).

You will work within an established highly skilled team alongside other contractors and our customers. Joining us means the opportunity to collaborate with leading experts while growing your career in areas that excite you. You will quickly become an integral member of the team and will be entrusted with significant and meaningful responsibilities. Because of this we seek driven engaged professionals who demonstrate exceptional characterour work often involves sensitive and unique challenges that require a high degree of trust from our customers.

If this sounds like an environment where you can thrive keep reading!

Leidos Defense Systems Sector provides a broad portfolio of systems solutions and services across land sea air space and cyberspace domains for customers worldwide. Our portfolio includes enterprise and mission IT large-scale intelligence systems command and control geospatial and data analytics cybersecurity logistics training and intelligence analysis and operations support. We tackle the worlds toughest security challenges in support of cant fail missions.

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Primary Responsibilities

• Serve as a recognized SME in applied statistics and ML / AI with extensive experience collaborating with researchers across government laboratories and academia.
• Work closely with engineers and scientists to solve problems across ML data science statistics computer vision and image / signal processing to support weapon automatic target recognition (ATR) development. This requires ATR expertise in multiple sensor modalities including passive EO / IR SAR and LIDAR / LADAR.
• Lead and conduct research in ATR development signal information estimation ML model forensics and interpretability out-of-distribution detection and adversarial attack detection / mitigation.

Basic Qualifications

If youre looking for comfort keep scrolling. At Leidos we outthink outbuild and outpace the status quo because the mission demands it. Were not hiring followers. Were recruiting the ones who disrupt provoke and refuse to fail. Step 10 is ancient history. Were already at step 30 and moving faster than anyone else dares.

Original Posting : December 3 2025

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 $148850.00 - $269075.00

The Leidos pay range for this job level is a general guideline onlyand 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.

Required Experience :

Staff IC

Key Skills

Machine Learning,Python,Data Science,AI,R,Research Experience,Sensors,Drug Discovery,Research & Development,Natural Language Processing,Data Analysis Skills,Toxicology Experience

Employment Type : Part-Time

Experience : years

Vacancy : 1

Monthly Salary Salary : 148850 - 269075