Research Engineer / ScientistLocation: United States
Employment Type: Full-time
Focus: Frontier AI, Agentic AI, Reinforcement Learning, Computer Use, Multimodal Models, Long-Horizon Agents
About the RoleOur client is hiring a
Research Engineer / Scientist to own ambitious research bets end to end.
This person will work across hypothesis generation, data strategy, model training, evaluation, deployment, and iteration. The role is focused on reinforcement learning, post-training, continual learning, multimodal agents, and long-horizon autonomous systems.
The team is open to a range of backgrounds, from fresh PhD graduates with strong research internships to senior researchers who have led teams at top AI labs.
What You'll Do- Run experiments and train frontier AI models focused on human judgment scaling, computer use, and intent representation learning
- Post-train LLMs and multimodal agents using reinforcement learning and continual learning methods
- Work with large-scale screen recording and behavioral data to understand how individual users work
- Build models that can learn user workflows and proactively automate tasks
- Design and execute rigorous research experiments that improve autonomous agent capabilities
- Own research bets end to end, from hypothesis and data through training, evaluation, deployment, and measurement
- Help define the company's research direction as an early technical team member
- Partner closely with founders and engineering leadership on technical architecture and product strategy
- Translate cutting-edge research into systems that can power real product experiences
What We're Looking For- Experience in frontier AI research, applied AI research, or research engineering
- Strong background in machine learning, deep learning, reinforcement learning, post-training, continual learning, or multimodal systems
- Experience designing and running rigorous experiments
- Ability to move from research idea to implemented system
- Strong programming and engineering fundamentals
- Comfort working with large-scale datasets and complex model training workflows
- Strong judgment around model evaluation, data quality, experimental design, and deployment readiness
- Ability to operate in ambiguity and take ownership of open-ended research problems
- Clear communication and ability to collaborate with a small, high-caliber founding team
- Excitement about computer use, autonomous agents, human intent modeling, and the future of AI-native software
Relevant Research AreasRelevant experience may include:
- Reinforcement learning
- Post-training
- Continual learning
- Long-horizon agents
- Computer use agents
- Multimodal LLMs
- Human behavior modeling
- Intent representation learning
- Human judgment scaling
- Behavioral data modeling
- Agent evaluation
- AI automation
- Large-scale model training
Ideal BackgroundOur client is open to a range of seniority levels, including:
- Fresh PhD graduates with strong research internship experience
- Research engineers from frontier AI labs
- Applied scientists with experience training and evaluating advanced AI systems
- Senior researchers who have led teams or major technical efforts
- Builders who can connect research quality with production-minded execution
Ideal Candidate ProfileThe ideal candidate is a research-minded builder who wants to push the frontier of agentic AI.
They can design strong experiments, train models, reason deeply about evaluation, and turn ambiguous research questions into working systems. They are excited by the challenge of building AI agents that understand human intent, use computers effectively, and improve through real-world interaction.
This person wants to help shape the research foundation of a company from the earliest stage.
