Full-Stack Machine Learning Engineer at Signal 1 | CA | Rezi

Full-Stack Machine Learning Engineer at Signal 1

Full-Stack Machine Learning Engineer

Signal 1 · CA

2 weeks ago

Full-Stack Machine Learning Engineer

Signal 1 · CA

16 days ago
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About the Role

The Agent Control Plane is a new extension of Signal 1's AI Management System, designed to help health systems manage, evaluate, and govern their AI agents. This is a zero-to-one build co-developed with leading health systems, offering significant ownership and the chance to shape the product's architecture and codebase.

Responsibilities

  • Own features end to end, from ambiguous idea to production, including data modeling, pipeline and backend service construction, and frontend collaboration.
  • Build the AI core of the product, designing and implementing systems for grounding agents, evaluating behavior, and extracting insights for continuous improvement.
  • Work with messy, real-world data, ingesting and normalizing telemetry, healthcare data standards (FHIR), and clinician feedback into reliable datasets.
  • Prototype with design partners, building demos and pilots with health systems and incorporating feedback rapidly.
  • Invent solutions for novel problems in agent observability and evaluation within healthcare.
  • Raise the bar for agent management practices, keeping patterns for testing, evaluation, logging, and reliability ahead of the state-of-the-art.
  • Keep engineering, product, and customers aligned through clear and succinct communication.
  • Translate fluently between technical and clinical audiences.

Requirements

  • 3+ years of industry experience shipping software, with a substantial portion focused on applied machine learning.
  • Proven track record of building and operating production AI systems, including LLM-powered or ML-powered features at scale.
  • Depth in AI and backend engineering, including strong Python for services and ML pipelines, cloud infrastructure, CI/CD, and a working understanding of frontend development (TypeScript, React, or equivalent).
  • Deep hands-on data experience, including building data pipelines, cleaning datasets, designing schemas, and understanding data quality impacts.
  • Experience taking at least one product or major product area from an empty repository to real users.
  • History of creating novel solutions for problems without established approaches.
  • Strong product mindset, prioritizing user needs and outcomes.
  • Comfort making decisions with incomplete information and adapting quickly.
  • High agency and resourcefulness in unblocking oneself and seeking help when needed.
  • AI-native approach, utilizing AI tools daily for coding, research, and prototyping.
  • High bar for craft, focusing on both functionality and user experience.

Skills

  • Python
  • Cloud infrastructure
  • CI/CD
  • TypeScript
  • React
  • Data pipelines
  • Data cleaning
  • Schema design
  • Machine learning
  • AI systems
  • LLM-powered features
  • Agentic systems

Location

  • Toronto

Work Type

  • Hybrid

Experience Level

  • 3+ years

Benefits

  • Comprehensive health benefits
  • 4 weeks PTO

About the Company

  • Signal 1's AI Management System helps health systems operate scalable and valuable AI programs, ensuring solutions perform as expected and enabling data-driven investment decisions.
  • The company was founded by Tomi Poutanen and Mara Lederman, with early backing from Geoffrey Hinton.
  • Signal 1 is purpose-built for healthcare and informed by experience managing AI at scale.