Machine Learning Engineer, API Multicloud

Skills

About the Role

You will build and improve AI systems that help strategic partners adapt OpenAI models in cloud-native environments. You'll work across post-training workflows, evaluation, data pipelines and API/infrastructure integration, diagnosing issues and turning learnings into platform improvements.

Requirements

• Master's or PhD in Computer Science, Machine Learning, or related field, or equivalent practical experience
• 3+ years of professional engineering experience in ML, infrastructure, or product engineering
• Experience building, training, fine-tuning, evaluating, or deploying production AI systems
• Hands-on experience with deep learning, transformers, PyTorch or TensorFlow
• Experience training and fine-tuning LLMs (SFT, distillation, preference optimization, RL)
• Strong software engineering fundamentals in Python, Rust, or similar
• Experience with evaluation systems, data pipelines, distributed systems, or cloud infrastructure
• Ability to operate through ambiguity and own problems end-to-end

Responsibilities

• Partner with strategic customers and internal teams to define target model behaviors and diagnose failure modes
• Build and scale production ML systems for model customization, post-training, and fine-tuning workflows
• Design, run, and interpret experiments on training and customization workflows
• Integrate ML capabilities into AWS-native API environments with backend and infrastructure engineers
• Improve post-training systems, tooling, APIs, and developer workflows based on partner learnings
• Bring model improvements and evaluation best practices into production with Research and Applied teams
• Design systems that let partners safely customize OpenAI models
• Debug and improve complex systems spanning model behavior, data, APIs, and infrastructure
• Operate with high ownership in an ambiguous 0→1 environment

Benefits

• Equity
• Performance-related bonus
• Medical, dental, and vision insurance with HSA employer contributions
• Health FSA, Dependent Care FSA, and commuter pre-tax accounts
• 401(k) with employer match
• Paid parental leave (up to 24 weeks birth parents, 20 weeks non-birthing parents)
• Paid medical and caregiver leave (up to 8 weeks)
• Flexible PTO for exempt employees
• 13+ paid company holidays and coordinated office closures
• Paid sick or safe time
• Mental health and wellness support
• Employer-paid basic life and disability coverage
• Annual learning and development stipend
• Daily meals in offices and meal delivery credits
• Relocation support
• Charitable donation matching and wellness stipends