Machine Learning Researcher

Date Posted:

2025-09-12

Country:

United States of America

Location:

UT13: RC-CT - Corp 411 Silver Lane, East Hartford, CT, 06108 USA

Position Role Type:

Remote

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

This job requires a U.S. Person. A U.S. Person is a lawful permanent resident as defined in 8 U.S.C. 1101(a)(20) or who is a protected individual as defined by 8 U.S.C. 1324b(a)(3). U.S. citizens, U.S. nationals, U.S. permanent residents, or individuals granted refugee or asylee status in the U.S. are considered U.S. persons. For a complete definition of “U.S. Person” go here. https://www.ecfr.gov/current/title-22/chapter-I/subchapter-M/part-120/subpart-C/section-120.62

Security Clearance:

None/Not Required

• Develop methods and algorithms to evaluate and improve LLM reasoning capabilities, post-training techniques (e.g., reinforcement learning, instruction tuning
• Design and run experiments on GPU cluster, and benchmark performance against established baselines.
• Explore approaches for agentic AI, including LLM agents that can plan, reason, and interact with tools and environments in a safe and reliable manner.
• Detect and mitigate vulnerabilities such as hallucinations.
• Communicate research findings through presentations, technical reports, and contributions to top-tier publications.
• Collaborate with a focused team on topics including safe and reliable LLM deployment, vulnerability detection, and LLM agents, gaining exposure to cutting-edge Generative AI applications

What You Will Learn

• Gain exposure to cutting-edge research in large language models, including reasoning, post-training, vulnerability detection/mitigation, and agentic AI.
• Strengthen hands-on skills in large-scale model training, evaluation, and safe deployment practices.
• Learn how to communicate research results effectively through presentations, technical writing, and potential contributions to top-tier AI/ML conferences.

Qualifications You Must Have 

• Currently pursuing a Ph.D. in Computer Science, Mathematics, or a related Engineering discipline. Candidates must not graduate prior to December 2025. Please submit a copy of your academic transcripts with your application.
• 1+ years of Ph.D.-level research experience in areas such as large language models, reasoning, post-training/fine-tuning techniques, or robustness/vulnerability detection.
• 1+ years of machine learning software development experience in Python, with familiarity in deep learning frameworks such as PyTorch or TensorFlow.

Qualifications We Prefer

• Publication record in top AI/ML venues such as NeurIPS, ICML, ICLR, ACL, or AAAI.
• Demonstrated ability to set research direction, work independently, and contribute to collaborative team efforts.

Learn More & Apply Now!
Location: This position is remote.

Please consider the following role type definition as you apply for this role:
Remote: This position is currently designated as remote. Employees who are working in Remote roles will work primarily offsite (from home). 

The salary range for this role is 37,000 USD - 82,000 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

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