Job Description
Overview
Fall 2025, Co-op: Machine Learning Researcher. Join to apply for the Fall 2025, Co-op: Machine Learning Researcher role at RTX.
Location: UT13: RC-CT - Corp 411 Silver Lane, East Hartford, CT, 06108 USA. Date Posted: 2025-09-15. Country: United States of America. Position Type: Remote.
U.S. Citizen, U.S. Person, or Immigration Status Requirements: This job requires a U.S. Person. U.S. Person is defined as a lawful permanent resident or protected individual as defined by 8 U.S.C. 1324b(a)(3). See definition here: https://www.ecfr.gov/current/title-22/chapter-I/subchapter-M/part-120/subpart-C/section-120.62. Security Clearance: None/Not Required.
- What You Will Do
- 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. 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. RTX considers several factors when extending an offer, including role, function and responsibilities, a candidates work experience, location, education/training, and key skills.
Hired applicants may be eligible for benefits, including medical, dental, vision, life insurance, short-term and long-term disability, 401(k) match, FSA, flexible work schedules, Employee Scholar Program, parental leave, paid time off, and holidays. Benefits depend on the business unit and may be affected by collective-bargaining agreements.
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 posting, subject to change.
RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with applicable laws.
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Salary: USD 37000 - 82000 per year
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