Senior Data Scientist
STR
Make my CV for this job, freeView job and applyYour CV, rewritten for this role using only your real experience. Sign in with Google and upload your CV. Nothing to install.
Skills named in this job
Read from the description itself, not inferred.
This role on the market
2,021 open scientist roles across 309 companies are on ApplySarthi right now, most of them in Bengaluru (134), Hyderabad (68), Delhi NCR (33).
- Data Scientist-Advanced AnalyticsIBM
- AI & Biology Research ScientistOrakl Oncology
- AMI Scientist/Interns - Geometry and 3D VisionAmi
- Senior Data Scientist (m/f/x)Makersite GmbH
- Research Scientist: Post-TrainingEnactintelligence
What scientist roles keep asking for: Python (48%), Machine learning (37%), SQL (22%), C++ (18%), Java (17%), Deep learning (14%), R (13%), LLMs (13%) — counted across their open postings here.
Data Scientist jobs in the United States · Remote Data Scientist jobs · AWS jobs · Deep learning jobs · Hadoop jobs · Machine learning jobs
STR has 134 open roles listed here.
- Chief Strategist
- Chief Strategist
- Chief Strategist (TL1)
- Principal Scientist
- Senior Cyber RF Hardware Engineer
Counted across 14 company job boards, updated as roles open and close.
Preparing for this interview
Interviews for scientist roles keep coming back to Python, Machine learning, SQL, C++. Practise those questions before you sit with STR.
Questions you are likely to be asked
- Why do you want to join STR?
- What is your experience with Machine learning? Tell me one thing you learned the hard way.
- How would you explain your model's result to someone who is not technical?
- What would you check first if a model's accuracy dropped after going live?
- When would you not use machine learning for a problem?
Prep Sarthi gives you a free mock interview: an AI interviewer asks you questions like these out loud, from your own CV and this job, and shows your score and your weakest answer.
Practise the Senior Data Scientist at STR interview free →About the Team
STR’s Intelligence Division researches and develops advanced analytics and machine learning-based solutions to solve challenging problems related to national security. Our team consists of passionate and motivated engineers with advanced degrees in engineering, computer science, mathematics, and data science, who are seeking opportunities to use their deep technical knowledge and creativity to tackle some of the hardest problems that our customers face. Our projects span multiple different data modalities and incorporate advanced algorithms, deep learning, and statistical techniques to uncover patterns in social media, structured and unstructured text, time series, geospatial, and imagery data, and must operate under challenging constraints not typically found in the commercial world. The tools and technologies we develop have real world impact and US Government analysts and operators use them to enable intelligence activities around the globe.
The Role
As a Senior Data Scientist, you will help research, develop, and integrate cutting-edge models and technologies into production systems that solve critical national security problems.
Working as part of a multidisciplinary team of researchers, engineers, and domain experts, you will analyze interesting and challenging datasets to develop innovative algorithmic techniques to discover trends and form valuable intelligence insights. You will explore a wide variety of quantitative models ranging from classical statistical methods to frontier language models. In addition, you will collaborate closely with customers to understand mission needs, define requirements, communicate technical developments and findings, and respond to user feedback.
This position can be based in Woburn, MA; or Arlington, VA. Applicants should expect to primarily work onsite.
What you will do:
- Investigate and analyze exquisite multimodal datasets to identify and expose hidden patterns and trends
- Develop, evaluate, and apply novel AI/ML models to automatically derive valuable insights for defense and intelligence analysts
- Think critically about robust modeling capabilities that generalize to support broad application against high-impact national security problems
- Collaborate with diverse teams to explore new domains and data modalities, investigate state-of-the-art research, tackle emerging problem spaces, and mentor others
Who you are:
- Active Secret security clearance, for which U.S citizenship is needed by the U.S government
- MS degree with 3+ years of experience, and/or PhD in Statistics, Data Science, Applied Mathematics, Computer Science, Physics or other related discipline (or equivalent experience)
- Desire to tackle challenges, develop new skills, and explore unsolved problem spaces
- Experience developing and applying AI/ML methods to real-world data science problems, especially in settings where data is sparse, noisy, and/or high dimensional
- Familiarity with various algorithmic techniques such as Bayesian methods, predictive models, reinforcement learning, deep learning architectures, and large language models
- Comfortable creating data visualizations and communicating technical findings
- Proficient with Python and the traditional data science and machine learning stack, including NumPy, Pandas, scikit-learn, PyTorch, and matplotlib
- Demonstrated ability to collaborate effectively within cross-functional teams and communicate with customers and end users
Even better:
- Familiarity with geospatial and/or spatiotemporal data
- Demonstrated ability to conduct and lead research tasks amidst uncertain conditions with minimal oversight
- Experience working with large datasets (> 100 GB) and familiarity with big data infrastructure and frameworks such as AWS, Hadoop, Spark, Dask, or MapReduce
- Solid understanding of software engineering principles, including testing, scalability, observability, maintainability, and performance optimization
- Active Top Secret security clearance
- Experience in intelligence and military-related mission areas
Pay Information
Full-Time Salary Range: $140,000 - $190,000
The salary range listed is based on external market data. Offers are based on factors, such as but not limited to, the candidate’s experience, education, training, key skills/critical skills, security clearances, and prevailing market and business conditions.
STR is a growing technology company with locations near Boston, MA, Arlington, VA, near Dayton, OH, Melbourne, FL, Carlsbad, CA, Atlanta, GA, and Denver, CO. We specialize in advanced research and development for defense, intelligence, and national security in: cyber; next generation sensors, radar, sonar, communications, and electronic warfare; and artificial intelligence algorithms and analytics to make sense of the complexity that is exploding around us.
STR is committed to creating a collaborative learning environment that supports deep technical understanding and recognizes the contributions and achievements of all team members. Our work is challenging, and we go home at night knowing that we pushed the envelope of technology and made the world safer.
STR is not just any company. Our people, culture, and attitude along with their unique set of skills, experiences, and perspectives put us on a trajectory to change the world. We can't do it alone, though - we need fellow trailblazers. If you are one, join our team and help to keep our society safe! Visit us at www.str.us for more info.
STR is an equal opportunity employer. We are fully dedicated to hiring the most qualified candidate regardless of race, color, religion, sex (including gender identity, sexual orientation and pregnancy), marital status, national origin, age, veteran status, disability, genetic information or any other characteristic protected by federal, state or local laws.
If you need a reasonable accommodation for any portion of the employment process, email us at appassist@str.us and provide your contact info.
Pursuant to applicable federal law and regulations, positions at STR require employees to obtain national security clearances and satisfy the requirements for compliance with export control and other applicable laws.
Match this job to your CV
ApplySarthi scores your CV against this role, shows the skills you are missing, and writes a tailored version for the application.
Check my match →Similar open roles
- Senior Manager of Supply ChainSTR
- Lead Product Operations ManagerSTR
- Associate Software Reverse EngineerSTR
- Autonomy Algorithms Lead Software EngineerSTR
- Autonomy Algorithms Lead Software EngineerSTR
- Autonomy Algorithms Senior Software Engineer STR
- Autonomy Algorithms Senior Software Engineer STR
- Autonomy Algorithms Senior Software Engineer STR
Need answers during your interview? Try Live Sarthi.
Live Sarthi, an Interview Sarthi app, shows answer suggestions during the call.
- Hidden from supported screen sharingThe overlay stays out of supported Windows screen captures.
- Answers start in about 1.5 secondsResponse time varies with your connection and model.
- From your own CVYour projects and your experience, not a generic script.
- 30 minutes freeThen ₹99 for a 2-day pass with unlimited calls — you pay for the days you are interviewing, not a subscription.
A Windows app, from the same team as ApplySarthi.
Listed on greenhouse · posted 2026-08-18. ApplySarthi collects openings and links to application pages; the role is advertised by STR, not by us.