
Senior Software Developer, AI Agents at Knak
No-code email and landing page builder for enterprise marketing teams.
Build and scale production AI agents for a marketing automation platform; owns agent runtime/harness including orchestration, tool calling, context management, structured outputs, guardrails, and failure handling; builds eval datasets, automated evaluators, and LLM-as-judge pipelines to measure prompt/model/harness changes and catch regressions; diagnoses agent failures from traces and drives model comparisons/benchmarks; develops Python and Node.js microservices for agent hosting and LLM interaction; maintains Laravel/PHP APIs integrating agents into the platform; deploys secure, scalable agent infrastructure on AWS including Lambda and Bedrock; tunes MySQL performance; contributes to architecture decisions and mentors engineers; must have 6+ years backend experience and production experience with LLM agents and evaluation systems; must: Python, Node.js, MySQL, REST APIs, TDD, CI/CD, AWS, microservices; bonus: full-stack web work including Vue/PHP Laravel, AI product development, LangGraph/agent frameworks, fast-growing SaaS background; equity mentioned
Remote Canada only




