Senior Software Developer, Build Platform

📋 Description

• Build the substrate for agentic development. Roll out containerized development environments across
• Build the verification layer for AI-native development. Develop systems that give agents and
• Make test signal fast, deterministic, and actionable. Attack flake detection, test selection, and
• Modernize the core libraries and CLI that underpin the microservices architecture, automating
• Solve hard testing problems by building robust backend mocking solutions and enabling isolated
• Define and measure operational excellence at scale by building automated scorecards that give teams

🎯 Requirements

• 7+ years of experience in software development as part of a team, preferably a platform-oriented
• 7+ years experience with Ruby, Python, TypeScript, or Kotlin.
• Experience designing, building, and maintaining internal libraries, frameworks, or tooling used by
• Hands-on experience with AI-assisted development; has used coding agents on real production work
• A builder's instinct for AI tooling; has built with LLMs and thought about evaluating correctness.
• Curiosity and deep interest in a fast, reliable, streamlined developer experience.

🎁 Benefits

• Top-tier health benefits and life insurance
• Long-term group savings with employer match through Wealthsimple for Business
• 20 vacation days, 4 wellness days, and unlimited sick and mental health days per year*
• 90 days away: work outside Canada for up to 90 days per year*
• Employee resource groups including Rainbow (2SLGBTQ), Women of WS, and Black at WS
• Hybrid team with over 1,500 employees across North America