Staff Engineer
Fullscript4 hours ago
Toronto, Canada or Ottawa, CanadaStaff+
Responsibilities
- Architect and build production-grade internal AI tools and shared platform capabilities.
- Lead technical design and delivery of MCP-based tools, agentic workflows, context layers, model gateways, and workflow automation.
- Take ambiguous business problems from discovery and architecture through implementation, deployment, measurement, and operation.
- Build and maintain infrastructure connecting approved models with internal systems, data, APIs, and workflows.
- Own reliability, scalability, observability, security, model routing, evaluation, access control, and sensitive-data handling for production AI systems.
- Contribute across backend services, infrastructure, and user-facing interfaces as needed.
- Evaluate AI models, frameworks, and patterns and recommend what the company should adopt or avoid.
- Shape the technical roadmap and identify reusable platform opportunities tied to measurable business impact.
- Provide technical guidance through code reviews, pairing, documentation, office hours, and engineering discussions.
Requirements
- 8+ years of professional software development experience with demonstrated technical leadership on complex production systems.
- Hands-on experience building and operating AI-enabled applications in production, including MCP or comparable tool-use protocols, agents, context management, and LLM integrations.
- Experience building internal tools, developer platforms, or enterprise systems adopted by real users and producing measurable operational impact.
- Deep backend expertise in Ruby, Python, or a comparable language, with the ability to learn new languages and frameworks.
- Strong systems-design fundamentals covering APIs, integrations, distributed systems, data flows, authentication, authorization, and architectural trade-offs.
- Practical experience operating reliable systems in AWS or a comparable environment, including CI/CD, containers, serverless infrastructure, observability, and infrastructure as code.
- Ability to work independently through ambiguity and drive substantial initiatives to completion.
- Clear communication and Staff-level influence, including constructive technical challenge, knowledge sharing, and connecting engineering work to business outcomes.
- Experience with React, TypeScript, or GraphQL is a bonus.
- Experience with n8n, Temporal, or another workflow orchestration platform is a bonus.
- Familiarity with LLM evaluation and observability platforms such as Langfuse is a bonus.
- Experience with GitLab CI/CD, Kubernetes, Cloudflare Workers, or similar infrastructure and deployment tooling is a bonus.
- Experience in healthcare or another regulated environment governed by standards such as HIPAA or SOC 2 is a bonus.
Benefits
- Remote-first flexibility, with Ottawa, Toronto, or Calgary preferred.
- Flexible PTO.
- RRSP/401k match and competitive compensation packages.
- Premium benefits with customizable coverage, paramedical services, and an HSA.
- Fullscript product discounts.
- Continuous learning opportunities.
Tech Stack
Categories
About Fullscript
Fullscript believes in the power of whole person care and is fully committed to helping all providers deliver it. We help create an ongoing cycle of whole person care by giving providers a single platform that brings together industry-leading labs, clinically effective supplements, and an intuitive suite of tools to promote adherence and outcomes. www.fullscript.com