Senior Software Developer, Platform Experience

Wealthsimple Technologies

2d • Hybrid

About The Position

Wealthsimple's mission is to help everyone achieve financial freedom – by making financial services simple, transparent, and low-cost. We're Canada's largest fintech, trusted by over 3 million clients with more than $100 billion in assets. We move fast, we own our work, and we care deeply about the people using our products. If that sounds like you, keep reading.
We're proud of what we've built — and we're just getting started. Read our Culture Manual and learn more about how we work.
About the team
The Platform Experience team sits as a bridge between Platform and Product engineering. We enable product teams to ship reliable code by partnering directly with developers to solve production challenges and with implementation of systematic improvements. We're central to Wealthsimple's reliability mission: when our products are reliable, clients trust us with their financial future. We focus on protecting critical flows, reducing time to detect and resolve incidents, and ensuring we learn from every issue to prevent recurrence.
About the role
Reporting to the Manager of Software Development, you'll work alongside a senior group of Software Developers to improve reliability across Wealthsimple's products. You'll take ownership of significant components and services, partnering with product teams to identify and resolve production issues. This role offers the opportunity to work across the full stack, contribute to platform primitives that make reliability the default, and help maintain Wealthsimple’s high standard for security, reliability and user experience.

Requirements

• 6+ years of software development experience building products with demonstrated growth in technical scope and autonomy.
• Experience in optimizing platform engineering and/or infrastructure.
• Knowledge of 2 or more of the following languages: Ruby on Rails / TypeScript / Kotlin.
• Experience using LLMs to drive broad changes across codebases (Claude).
• Strong problem-solving skills with the ability to tackle complex issues across multiple systems and keen interest in getting to the root cause.
• Experience designing and maintaining production systems with high availability requirements.
• Strong communication and collaboration skills. You can explain complex technical concepts clearly and work effectively with stakeholders across different backgrounds.

Responsibilities

• Partner directly with product engineers to diagnose and resolve production issues, building solutions that prevent recurrence.
• Take end-to-end ownership of system components, designing with reliability and maintainability as primary concerns.
• Contribute to platform tools and frameworks that help all engineers ship reliably.
• Collaborate with Platform, Product, and Data partners to align technical decisions with client needs.
• Help establish technical standards and best practices for development at Wealthsimple.

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

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed