ApplySarthi Match jobs to your CV

Principal 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.

This role on the market

2,015 open scientist roles across 306 companies are on ApplySarthi right now, most of them in Bengaluru (133), Hyderabad (68), Delhi NCR (33).

What scientist roles keep asking for: Python (47%), Machine learning (36%), SQL (22%), C++ (18%), Java (17%), Deep learning (14%), R (13%), LLMs (13%) — counted across their open postings here.

STR has 134 open roles listed here.

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

  1. Why do you want to join STR?
  2. Tell me about yourself, and why this role is the right next step.
  3. Tell me about a problem you solved at work that you are proud of.
  4. Tell me about a time you disagreed with your manager. What happened?
  5. Where do you want to be in three years?

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 Principal Scientist at STR interview free →

 

About the Team

STR is seeking a Principal Scientist to work across the company to develop a cohesive strategy and provide direction, technical oversight and review across the portfolio of sensing and counter-sensing programs, particularly in the development of new RF technologies, electromagnetic analysis/modeling and antenna development. As part of this role, the person will also lead customer engagements across the Defense and Intelligence Communities to develop new program concepts, ideas and proposals.

The Role:

The position will have a significant and immediate impact on our national security by leveraging capabilities, expertise and experience from across STR. We believe that each candidate has a unique set of skills, experiences, and perspectives that could enable us to provide our customers with innovative solutions; the skills listed below are intended to give you a sense for the position. If you see an overlap with your skills, go ahead and apply!

The Principal Scientist will help the company to build out a talented multi-site team. They will also be responsible for all aspects of the business process, working closely with other leaders and will include technical marketing, business development, proposal writing, recruiting, program execution and staff mentoring.

The Principal Scientist should have experience across the important technologies in the sensor technology space, including signal processing, RF systems hardware, antenna technology, electromagnetics, system integration, field testing, data collection, missions and CONOPs, along with a proven track record of delivering quality results to customers in the Department of Defense (DoD) and Intelligence Communities (IC).

What you will Do:

Who you Are:

Pay Information
Full-Time Salary Range: $220,000 - $270,000

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

Need answers during your interview? Try Live Sarthi.

Live Sarthi, an Interview Sarthi app, shows answer suggestions during the call.

Try Live Sarthi free →

A Windows app, from the same team as ApplySarthi.

Listed on greenhouse · posted 2026-09-25. ApplySarthi collects openings and links to application pages; the role is advertised by STR, not by us.