Senior Full Stack Software Engineer

Reposted 19 Days Ago
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Toronto, ON, CAN
Hybrid
Senior level
Artificial Intelligence • Healthtech
The Role
Design, build, and evolve the frontend and backend of a cloud-based clinical AI platform; own architecture, break down ambiguous problems, and collaborate with Product, Design, ML, Security, and Infrastructure teams while integrating AI-assisted development workflows.
Summary Generated by Built In

Position Description: Senior Full Stack Software Engineer 

Reporting to: Director of Application Engineering 

 

Signal 1 helps health systems accelerate AI adoption with a category defining technology platform. Signal 1’s first product, the AI Management System (AIMS), gives health system leaders visibility and control across their growing AI portfolios. AIMS offers comprehensive oversight of predictive and generative AI applications and introduces guardrails to mitigate downside risks. It sets the standard for Responsible AI in healthcare. Purpose-built for healthcare and informed by years of experience managing AI at scale in other industries, Signal 1 empowers healthcare organizations to translate innovation into real clinical, operational, and financial outcomes.
Signal 1 is a 30-person, well-funded and rapidly growing startup with strong product market fit and deployments at a growing number of top-20 US health systems.

 

We are looking for a Senior Full Stack Software Engineer to join our Application Engineering Team. You will: 

 

  • Build and evolve the frontend and backend of the Signal 1 AI Management System. 
  • Drive software architecture design and establish modern engineering practices that leverage AI-assisted development to raise quality and velocity. 
  • Break down ambiguous, high-level problems into concrete technical solutions and engineering plans. 
  • Work autonomously and collaboratively with Product, Design, ML, Security, Infrastructure and other engineering teams. 


Required Qualifications: 

  • Bachelor's degree in Computer Science or equivalent practical experience. 
  • 5+ years of software development experience. 
  • 2+ years of experience shipping user-facing products—you care about building things that are genuinely useful, not just visually polished. 
  • Strong system design and software architecture skills—you can own end-to-end technical decisions. 
  • Strong problem-solving skills and ability to work with ambiguity. 
  • Hands-on experience with AI coding tools (e.g. Claude) and a strong willingness to integrate them into daily workflows. 


Preferred Qualifications: 

  • Experience with TypeScript, React, Chart.js, Java 21, Spring Boot, Postgres, or any equivalent modern technologies. 
  • You have worked in startup environments and shipped products from 0 to 1. 
  • You are passionate about great user experiences and data visualization. 
  • Pragmatic mindset—you prioritize speed and business impact over unnecessary technical complexity. 
  • Prior experience in working with AI and/or in healthcare. 

Skills Required

  • Bachelor's degree in Computer Science or equivalent practical experience
  • 5+ years of software development experience
  • 2+ years of experience shipping user-facing products
  • Strong system design and software architecture skills
  • Strong problem-solving skills and ability to work with ambiguity
  • Hands-on experience with AI coding tools (e.g., Claude) and willingness to integrate them into workflows
  • Experience with TypeScript
  • Experience with React
  • Experience with Chart.js
  • Experience with Java 21
  • Experience with Spring Boot
  • Experience with Postgres
  • Experience working in startup environments and shipping 0-to-1 products
  • Passion for great user experiences and data visualization
  • Pragmatic mindset prioritizing speed and business impact
  • Prior experience working with AI and/or in healthcare
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The Company
HQ: Toronto, Ontario
28 Employees
Year Founded: 2022

What We Do

Launched in April 2022, Signal 1 is a health AI start-up with the mission to transform patient care through responsibly deployed AI. Signal 1 provides hospitals with an end-to-end solution for integrating AI-driven insights into existing hospital workflows. Its first application is a clinically validated real-time automated patient risk predictor that helps hospitals improve quality and flow while reducing stress on front-line care providers.

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