[Hiring] Machine Learning Engineer - Model Evaluation & Experimentation @Weekday AI

Role Description

Join a pioneering AI initiative focused on building the next generation of evaluation benchmarks for frontier AI models. We are seeking experienced Machine Learning Engineers and Researchers to bring hands-on expertise in model development, experimentation, and evaluation to create rigorous benchmark tasks for advanced AI systems.

In this role, you will:

• Design sophisticated, multi-step machine learning challenges inspired by real-world research workflows.
• Implement experimental ideas and run training pipelines.
• Analyze model behavior and validate results.
• Help establish high-quality evaluation benchmarks that reveal the strengths and limitations of frontier AI models.

This is a fully remote, full-time engagement requiring approximately 35 hours per week.

Qualifications

• Master's degree, PhD, or equivalent practical experience in Machine Learning, Computer Science, Artificial Intelligence, Data Science, or another quantitative STEM discipline.
• Minimum 1 year of professional experience in machine learning research, research engineering, applied AI, or another research-intensive technical role.
• Strong hands-on experience designing, training, evaluating, and optimizing machine learning models through complete experimental workflows.
• Practical experience conducting machine learning experiments, including experiment setup, hyperparameter tuning, execution, validation, and analysis.
• Strong understanding of modern Large Language Models (LLMs), their capabilities, limitations, and evaluation methodologies.
• Proficiency in Python and Git, with experience working in both script-based and notebook-based development environments.
• Familiarity with reinforcement learning concepts—including reward functions, policy optimization, and training behavior—is preferred.
• Experience with AI evaluation, benchmark development, AI training, or task authoring is highly desirable.
• Excellent analytical thinking, creativity, attention to detail, and the ability to solve complex, open-ended technical problems independently.
• Strong written communication skills for documenting experimental methodologies and technical findings.
• Ability to commit approximately 35 hours per week on a consistent basis.

Preferred Qualifications

• Experience developing or evaluating large language models, foundation models, or generative AI systems.
• Background in reinforcement learning, deep learning, distributed training, or model optimization.
• Familiarity with benchmark design, AI safety evaluations, or research-quality experimentation.
• Experience contributing to research publications, open-source machine learning projects, or advanced AI systems.

Benefits

• Help shape how next-generation AI systems are evaluated through rigorous machine learning experimentation.
• Collaborate with leading AI researchers developing frontier evaluation benchmarks.
• Apply your expertise to improve AI reasoning, model quality, and experimental reliability.
• Contribute directly to benchmark development that advances the capabilities of state-of-the-art AI systems.
• Enjoy the flexibility of a fully remote engagement while working on impactful AI research initiatives.

Equal Opportunity

We are committed to fostering an inclusive and diverse environment where all qualified applicants receive equal consideration. Reasonable accommodations are available throughout the application and engagement process.

Contract & Engagement Details

• Independent contractor engagement.
• Fully remote with flexible working hours.
• Expected commitment of approximately 35 hours per week.
• Project duration may be extended, shortened, or concluded based on project requirements and individual performance.
• Work does not require access to confidential or proprietary information from any current or former employer.
• Payments are issued weekly based on approved work completed.
• At this time, we are unable to support H1-B or STEM OPT candidates.