Founding ML/Research Engineer
Fractal Analytics
Posted Discovered via the company's careers siteMatch locked
FULL TIME3+ years exp
About the role
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Role Details
Company: Early-stage AI startup
Industry: AI / Machine Learning / Deep Tech
Location: San Francisco, California
Employment Type: Full-time
Work Arrangement: In-office
Salary: $150,000-$250,000
Visa Sponsorship: Limited
Experience: 3-6 years
Company Size: 1-10 employees
About the Company
An early-stage AI startup developing an engineering assessment platform for deep-tech companies. The platform evaluates engineers through realistic technical tasks, helping organisations identify suitable candidates and match engineering talent to complex projects.
The company works with businesses across space and defence, advanced manufacturing, robotics, and related technical sectors. Its product is already in production, and the company has recently secured pre-seed funding to support its growth.
About the Role
The company is hiring a Founding ML/Research Engineer to turn expert-calibrated engineering assessments and real hardware-engineering workflows into datasets, environments, and evaluation systems for training advanced AI models.
The role focuses on reinforcement learning (RL), agentic CAD and ECAD tasks, evaluation frameworks, reward signals, data pipelines, and machine learning infrastructure. You will work closely with mechanical and electrical engineers to define correct outcomes and collaborate with AI research teams using these environments for model post-training.
This is a hands-on machine learning engineering and research role, not an AI applications position focused primarily on retrieval-augmented generation (RAG) or prompt engineering.
Responsibilities
- Design and implement reinforcement learning environments and evaluations for AI agents performing CAD and ECAD tasks.
- Build grading systems, reward signals, and verification frameworks to assess engineering work reliably.
- Transform engineering assessment data into datasets and environments suitable for AI model training and post-training.
- Develop data pipelines aligned with the company's assessment workflows and research requirements.
- Automate processes such as assessment scoring and question generation.
- Collaborate with mechanical and electrical engineers to establish technical correctness and evaluation standards.
- Work with AI research teams to support model training and post-training workflows.
- Run experiments, analyse results, and contribute to research and product direction.
- Identify opportunities to improve scalability, efficiency, and the quality of AI evaluations.
Requirements
- Approximately 3-6 years of relevant professional experience in machine learning or AI engineering.
- Strong grounding in deep-tech engineering through ML work at a hardware-focused company, close collaboration with electrical or mechanical engineers, or an educational background in electrical or mechanical engineering.
- Experience with CAD, ECAD, 3D vision, or other hardware-adjacent machine learning applications.
- Practical experience building, providing, or using reinforcement learning environments for model training or post-training.
- Strong experience in machine learning evaluations, grading systems, data pipelines, or ML infrastructure.
- Familiarity with reinforcement learning, evaluation frameworks, and LLM-as-a-judge approaches.
- Hands-on engineering skills and the ability to implement systems rather than operate only at a conceptual level.
- High initiative, strong problem-solving ability, and comfort working in an ambiguous environment.
Interview Process
- Initial screening
- Technical interview
- Take-home assignment
- Final round
- Offer
Not included in the source posting: benefits.
Skills
machine-learningartificial-intelligencellmexpressrag
Who can apply
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