Senior AI/ML Engineer

Join Sigma, a company dedicated to revolutionizing how people work with data. As a Senior AI/ML Engineer, you will be at the forefront of building the AI foundation that will power Sigma's future. You will collaborate with product, design, and engineering teams to identify high-impact AI/ML opportunities, prototype and productionize AI systems, and develop and scale AI/ML infrastructure. This role offers competitive pay, flexible scheduling, comprehensive health benefits, unlimited time off, and opportunities for professional development and career growth.

• Collaborate with product, design, and engineering 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.
• Tackle novel UX problems at the intersection of AI, BI, and apps, ensuring that AI systems feel intuitive to users.
• Bachelor’s degree in Computer Science, Engineering, Mathematics, or a related field (required)
• A track record of building things that ship—whether it’s recommendations, search, machine translation, or something equally complex
• 10+ years of experience building and deploying production-grade AI/ML systems
• Experience adapting or training foundation models (language or multimodal) for novel domains
• Deep knowledge of machine learning, deep learning, and applied AI
• Experience across the full ML lifecycle: data curation, training, deployment, monitoring
• You’ve worked in a fast-moving startup or high-growth environment
• You know your way around cloud infrastructure (AWS, GCP, Azure)
• You've built agents that can plan, reason, and use tools