Sr. Software Development Engineer in Test

Job Description

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 frontend

Contribute to automated monitoring test development

Develop and maintain automated test scripts using tools such as Playwright

Write test plans and test cases that ensure full coverage of product features

Implement load and performance testing for backend services

Analyze test coverage and drive improvements across the engineering lifecycle

Collaborate with developers to design testable features and resolve issues quickly

Partner with DevOps to integrate test automation into pre-deployment workflows

Contribute to team growth and mentor future quality engineers

Required Skills & Experience

5+ years of experience in software testing and delivery





3+ years of frontend automation testing

3+ years of backend automation testing

Strong development skills, understanding of git source control, professional standards of software development

Strong understanding of GitHub Actions, self-hosted runners, platform matrix builds (Linux x64/arm64/el8, macOS, Windows)

Hands-on experience with up-to-date automation frameworks such as Playwright, Selenium, Checkly, Qase, Grafana

Strong coding skills in Python, Bash, and TypeScript — both with and without agent

Experience with API testing, test coverage analysis, and performance/load testing

Tools such as Locust.IO or JMeter

Track record of owning and delivering QE infrastructure in a fast-paced environment

Experience collaborating across engineering, product, and DevOps functions

Excellent communication, documentation, and organizational skills

Nice to Have

Startup experience or experience building test infrastructure from scratch

Familiarity with cloud environments, especially AWS

Experience testing IDEs, developer tools, or complex interactive UIs

Strong understanding of using Agentic AI systems

Electron development, testing, and deployment experience

What We Offer

Opportunity to shape the QE strategy for a company from the ground up

A high-impact role in a deep-tech AI + semiconductor SaaS startup

A collaborative, ownership-driven culture where your voice matters

Competitive compensation and equity

Office snacks, company events, and a prime location in Toronto

Hybrid model - in-office 4 days a week

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📌 Sr. Software Development Engineer in Test (Ontario)
🏢 Cognichip
📍 Ontario