Staff AI/ML Engineer

Join Sigma as a Staff AI/ML Engineer and be part of a growing team focused on building the AI foundation for the future. You will partner with product, design, and engineering teams to identify high-impact AI/ML opportunities, prototype and productionize AI systems, develop and scale AI/ML infrastructure, and tackle novel UX problems. Enjoy competitive pay, flexible schedule, comprehensive health coverage, unlimited time off, and many other benefits.

• Collaborate with cross-functional teams to identify and prototype high-impact AI/ML opportunities.
• Develop and scale AI/ML infrastructure that powers both internal tooling and customer-facing features.
• Lead the full ML lifecycle, including data curation, training, deployment, and monitoring of AI systems.
• A track record of building things that ship—whether it’s recommendations, search, machine translation, or something equally complex
• Bachelor’s degree in Computer Science, Engineering, Mathematics, or a related field (required)
• Experience adapting or training foundation models (language or multimodal) for novel domains
• Experience across the full ML lifecycle: data curation, training, deployment, monitoring
• Deep knowledge of machine learning, deep learning, and applied AI
• 10+ years of experience building and deploying production-grade AI/ML systems
• You've built agents that can plan, reason, and use tools
• You know your way around cloud infrastructure (AWS, GCP, Azure)
• You’ve worked in a fast-moving startup or high-growth environment