Senior Full-stack AI Engineer - Agent Systems
Remote from Ontario, CanadaFull-TimeSenior
Salary200000 - 325000 CAD per year
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Job Details
- Experience
- 10+ years software experience with production systems, 5 years+ experience with Typescript, Node.js, React (front-end and back-end)
- Required Skills
- Node.jsArtificial IntelligenceTypeScriptReactDistributed Systems
Requirements
- 10+ years software experience with production systems
- 5+ years experience with Typescript, Node.js, React (front-end and back-end)
- Deployed production AI products/platforms
- Claude Code is primary development environment
- Shipped production agent systems and have experience with associated challenges
- Worked with LLM APIs directly: prompt design, tool use, structured outputs, evals
- Understand edge-native and stateful distributed systems well enough to design around their constraints
- Worked at the VM or container level and know what happens when things go wrong at the OS layer
- Write TypeScript well and care about correctness
- Experience with agent communication protocols (ACP, MCP, or similar) (useful)
- Background with WebSocket-heavy real-time systems (useful)
- Thought seriously about agent security: credential isolation, output sanitisation, prompt injection (useful)
Responsibilities
- Shape how Toyo builds and deploys agent infrastructure
- Write a lot of code for agent systems
- Make architectural decisions for scaling agent infrastructure
- Work directly with the founding team on critical aspects
- Build systems for agent reliability including human-in-the-loop checkpoints, tiered approval flows, and structured output validation
- Manage ACP session lifecycle, resume after idle timeouts, and multi-agent orchestration within a VM
- Make secure VM environments robust through boot orchestration, snapshotting, security hardening, and OS-level failure recovery
- Help define AI-native development practices: automated feedback pipelines, agents that triage and enrich issues, and evals
- Implement scheduled and event-driven agents (Cron-triggered, webhook-triggered, WhatsApp/Slack integrations)
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