Job Description

Toast is recruiting on behalf of a fast-growing AI company operating at the intersection of healthcare and enterprise software. The company is a venture-backed startup of roughly 50 to 150 employees that is redefining how healthcare organizations engage with patients and manage contact center operations through intelligent automation. They are building proprietary AI-driven platforms that replace legacy workflows with modern, scalable systems, and are gaining meaningful traction with enterprise healthcare clients across North America. This is a foundational engineering role at a company where your work will directly shape the product and the platform it runs on.

Responsibilities

Design and build scalable Python services and REST and GraphQL APIs that power the core product
Define and evolve a resilient backend architecture capable of growing with increasing customer demand and product complexity
Own database schema design, data modeling, and query performance tuning across both relational and graph data systems, including knowledge graph services
Implement observability across the stack through logging, metrics, and distributed tracing, and maintain operational runbooks to support reliability at scale
Partner with frontend, data, and product teams to define API contracts and shared deliverables
Secure the platform through authentication and authorization controls, secrets management, rate limiting, and data protection practices
Mentor engineers on backend best practices and contribute to raising the overall quality bar across the engineering team

Requirements

Extensive production experience building backend systems in Python
Hands-on experience with knowledge graphs and graph data stores such as Neo4j, Neptune, or ArangoDB, including schema and ontology design and query optimization
Strong SQL skills and familiarity with ORMs such as SQLAlchemy or Django ORM
Experience designing APIs and distributed systems with reliability and performance as first-order concerns
Solid understanding of cloud infrastructure on AWS, GCP, or Azure, along with containers and infrastructure as code
Experience with observability stacks including tools like OpenTelemetry, Prometheus, and Grafana
Ability to decompose ambiguous problems, communicate tradeoffs clearly, and drive projects to completion end-to-end
Experience with agentic workflows, RAG systems, event-driven architectures, or security and compliance practices such as SOC2 is considered a strong asset

Benefits

Competitive senior engineering salary in the range of $120,000 to $150,000 CAD depending on experience, along with early-stage equity that carries real upside as the company scales
Comprehensive health, dental, and vision coverage
Remote-first setup with flexible working hours
Professional development budget
The opportunity to own backend architecture at a company where AI is meaningfully improving how patients experience care, with systems that will directly support healthcare organizations serving tens of thousands of patients across North America

Senior Software Engineer - Backend