Senior Software Development Engineer in Test

Job Title Sr. Software Development Engineer in Test Job Description Sr. Software Development Engineer in Test About The Job We're looking for a Senior SDET to join us as part of our growing team. This person will help build the foundation of a robust, automated testing strategy across our cloud-native backend and developer IDE. Our company is developing an AI-native chip design system that leverages proprietary models, advanced agentic and knowledge workflows, all integrated with semiconductor design tools. We work within pipelines that combine LLM-based reasoning and multi-agent orchestration on top of horizontal autoscale.As a Quality Engineer you will work closely with engineering, product, and DevOps teams to ensure the quality, performance, and resilience of our systems. You'll be responsible for defining our test strategies, developing automation frameworks, and scaling our testing infrastructure as we grow. Core Responsibilities Own end-to-end evaluation for our cloud backend services and IDE frontendContribute to automated monitoring test developmentDevelop and maintain automated test scripts using tools such as PlaywrightWrite test plans and test cases that ensure full coverage of product featuresImplement load and performance testing for backend servicesAnalyze test coverage and drive improvements across the engineering lifecycleCollaborate with developers to design testable features and resolve issues quicklyPartner with DevOps to integrate test automation into pre-deployment workflowsContribute to team growth and mentor future quality engineers Required Skills & Experience 5+ years of experience in software testing and delivery3+ years of frontend automation testing3+ years of backend automation testingStrong development skills, understanding of git source control, professional standards of software developmentStrong understanding of GitHub Actions, self-hosted runners, platform matrix builds (Linux x64/arm64/el8, macOS, Windows)Hands-on experience with modern automation frameworks such as Playwright, Selenium, Checkly, Qase, GrafanaStrong coding skills in Python, Bash, and TypeScript — both with and without agentExperience with API testing, test coverage analysis, and performance/load testingTools such as Locust.IO or JMeterTrack record of owning and delivering QE infrastructure in a fast-paced environmentExperience collaborating across engineering, product, and DevOps functionsExcellent communication, documentation, and organizational skills Nice to Have Startup experience or experience building test infrastructure from scratchFamiliarity with cloud environments, especially AWSExperience testing IDEs, developer tools, or complex interactive UIsStrong understanding of using Agentic AI systemsElectron development, testing, and deployment experience What We Offer Opportunity to shape the QE strategy for a company from the ground upA high-impact role in a deep-tech AI + semiconductor SaaS startupA collaborative, ownership-driven culture where your voice mattersCompetitive compensation and equityOffice snacks, company events, and a prime location in TorontoHybrid model — in-office 4 days a week