Senior AI-Native Backend Engineer: Agent Platform

United States Digital Space LLC; Toronto; Hybrid; CAD 188,000 - 242,000; Full time

Job summary

The company is shaping an AI-native agent platform and seeks a Senior Software Engineer to own substantial portions of the stack, designing and operating production systems that scale across workflows and internal integrations.

Join a small, autonomous cross-functional team in Toronto, collaborating to define the knowledge infrastructure, tooling, and trust/safety framework for reliable AI-driven operations.

Qualifications

• 5+ years of backend engineering experience building and operating production systems.
• Hands-on experience with LLMs and AI agents (orchestration, RAG, tool/function calling, or similar).
• Strong API design and system integration skills.
• Product-minded: questions requirements and contributes to product decisions, not just execution.
• Proven ownership of complex projects in ambiguous, early-stage environments.

Responsibilities

• Design, build, and own core components of the agent platform, from orchestration to the tool integrations connecting it to internal systems.
• Build and evolve the capabilities layer: APIs, data access patterns, and service integrations for agents to execute operational workflows.
• Architect the knowledge and memory infrastructure, allowing agents to retrieve the data and act across our systems.
• Design and implement the trust and safety framework, including audit trails, human-in-the-loop controls, and guardrails for safe and auditable AI-driven operations.
• Contribute to agent evaluation and testing infrastructure, defining how we measure accuracy, reliability, and regression across agent behaviors.
• Partner directly with Operations to understand workflows, identify automation opportunities, and translate process knowledge into agent capabilities.
• Mentor other engineers on the team as it grows.

Skills

Backend engineering

AI agents & LLMs

API design

Product-minded

Ownership mindset

Job description

The company is shaping an AI-native agent platform and seeks a Senior Software Engineer to own substantial portions of the stack, designing and operating production systems that scale across workflows and internal integrations.

Join a small, autonomous cross-functional team in Toronto, collaborating to define the knowledge infrastructure, tooling, and trust/safety framework for reliable AI-driven operations.