Senior Software Engineer - Backend

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 $140,000 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