Senior Staff Machine Learning Engineer

Scowtt is an early-stage startup developing AI/ML marketing optimization and autonomous sales experiences. The Senior Staff Machine Learning Engineer will lead ML systems end to end, including model architecture, experimentation, deployment, scaling, monitoring, and long-term system health for Marketing AI and AI Sales Agents.

Responsibilities:

• End-to-end ownership of ML systems, from research and modeling to deployment and scale
• Design and evolve next-generation conversion and value prediction models using behavioral, CRM, and engagement data
• Fine-tune and specialize LLMs (e.g., SFT, LoRA, PEFT) to power AI Sales Agents focused on reasoning, persona alignment, and long-term conversion outcomes
• Drive high-speed feedback loops between ML systems and ad platforms
• Design systems for continuous training, monitoring, and rapid experimentation
• Solve systemic ML problems around data quality, drift, reliability, and velocity
• Mentor senior ML engineers and raise the organization’s ML bar
• Follow and enforce security best practices, including secure coding, proper handling of sensitive data, authentication/authorization controls, and compliance with company security policies