Senior Software Application Tester (Toronto)

We’re looking for a Software Development Engineer in Test (SDET) who can leverage their depth and breadth of experience to help us continue to grow our platform while maintaining high standards for efficiency, quality, performance, integrity, and technical excellence. Achieving our mission means holding the highest bar for Quality (functional, performance, reliability, resiliency, efficiency, yield) at all times; Problem Solvers : You are tenacious at finding solutions and find creative ways to solve problems while working with others amicably and presenting your viewpoints. High Standards : You take the quality of every release personally. You have a passion for building comprehensive test suites for complex software, and bring a robust CI/CD DevOps tooling culture to bear to keep the signals flowing Learning recent frameworks and languages is exciting to you – you’re not satisfied with the status quo. You’ll be working to test the control plane for cutting edge programmatic ad tech that touches millions of users every single day Operate side‑by‑side with platform and feature engineers, developing comprehensive tests for each build as a core component of the quality strategy and SDLC. As a member of the development team, you will drive daily test result reviews, issue diagnosis, resolution and closure. Lead or assist in data analysis to determine data health and consistency, or root cause of issues. Identify and address gaps in testing over time, proactively as well as through responding to release blockers and production incidents. Take long‑term responsibility for an ever‑improving test suite. Be a key technical leader in driving the architecture evolution of our software/data test automation framework and related capabilities Lead the definition, design, dev, docs, and maintenance of tools, test cases, and automation frameworks Provide feedback and influence into the design process to help us build a testable platform, applications, and data models Design and build quality, performance, and reliability in from day one, and inspire other team members to do the same 5+ years of experience as a Software Engineer 3+ years designing and implementing automated validation systems, test infrastructure, or developer tooling as production‑quality software Experience designing and building simulation software to validate functionality and performance of end‑to‑end software solutions Experience validating high‑throughput, low‑latency distributed systems where correctness, resiliency, and performance characteristics matter at scale A passion for designing, writing, and testing high‑quality code. We use a lot of different languages and frameworks including JavaScript (Node, React), Golang, MySQL and more Experience in performance test design, load modeling, profiling and identifying systemic bottlenecks in distributed systems. Excellent problem‑solving skills, the ability to think differently, and an understanding that compromise, negotiation and practicality are important qualities Comprehensive health, dental, and vision plans for you and your dependents Paid time off, health days, and personal obligation days plus flexible work schedules Competitive retirement matching plans Equity packages Generous parental leave available to birthing, non‑birthing, and adoptive parents Employee assistance program One day of volunteer time off per year and a donation‑matching program Bi‑weekly town halls and regular community‑led team events We celebrate diversity of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or expression, or veteran status. Additionally, we realize that diversity is deeper than any status or classification—diversity is the human experience. Accessibility for Applicants with Disabilities Index Exchange welcomes and encourages individuals with disabilities to apply to work with us. Apply on Kit Job: kitjob.ca/job/2prgg0