Sr Software Developer, AI Platform

Build something people love

Wealthsimple's mission is to help everyone achieve financial freedom – by making financial services simple, transparent, and low-cost. We are 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.

About the AI Platform Foundations Team AI Platform Foundations is a newly formed team within Platform Engineering on a mission to make AI a reliable, governed, and productivity‑multiplying force across Wealthsimple's engineering organization. We build and maintain the shared AI tooling that hundreds of developers depend on to ship faster and with more confidence. We also build the guardrails and policy controls that keep teams on the golden path, so innovation happens without introducing risk.

As a founding member of this team, you’ll shape what AI‑assisted engineering looks like at Wealthsimple. You’ll work across a polyglot environment of Ruby on Rails, Python, TypeScript, and Java/Kotlin, partnering closely with teams across Platform Engineering and the broader organization to build tooling that is adopted broadly, trusted deeply, and measured rigorously. Your work will directly influence how Wealthsimple’s engineers write code, review changes, and ship to production.

In this role you’ll have the opportunity to:

Build the shared AI tooling platform from the ground up, designing and implementing the infrastructure that brings AI‑assisted development to every team.

Accelerate developer productivity through AI‑powered automation, creating tooling that reduces friction in the development lifecycle.

Design and implement guardrails that keep developers on the golden path, ensuring AI interactions are safe, compliant, and aligned with Wealthsimple’s standards.

Drive measurable adoption across a polyglot engineering organization, tracking adoption, satisfaction, and impact with data.

Define the standards and practices for AI‑assisted engineering at Wealthsimple, influencing LLM integrations, cost governance, and tooling strategy.

Champion engineering excellence and mentorship by partnering with teams, sharing expertise through documentation and code reviews, and helping grow the next generation of developers.

What you’ll bring

7+ years of experience in software development, with meaningful experience in platform engineering, developer experience, or developer tooling, and a growing track record building AI‑powered or LLM‑driven systems.

Hands‑on experience building with LLMs and AI tooling, including integrating AI APIs and experimenting with agents and automation.

A product mindset for internal platforms, treating developer tooling as a product and focusing on engineers as customers.

Technical versatility across a polyglot stack, with experience in two or more of Ruby, Python, TypeScript, or Java/Kotlin.

Experience building governance, policy, or guardrail systems that enforce standards at scale without hindering developers.

Data‑informed decision‑making, using metrics to identify opportunities, measure impact, and prioritize.

Strong cross‑functional collaboration skills, building trust with partner teams and communicating progress and trade‑offs.

Why Wealthsimple

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

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, collaborating with talented, curious, and driven teammates

Inclusion Statement We’re building products for a diverse world, and we need a diverse team to do it well. We strongly encourage applications from everyone, regardless of race, religion, colour, national origin, gender, sexual orientation, age, marital status, or disability status.

Accessibility Statement We’re committed to an accessible hiring experience. If you need any accommodations throughout the interview process, please let us know – we’ll work with you to make sure you have what you need. We also welcome any feedback on how we can better accommodate candidates with accessibility needs.

AI in Hiring We may use artificial intelligence (AI) tools to support parts of our hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our team but don’t replace human judgment – all final hiring decisions are made by people. If you have questions about how your data is used, reach out to us.

Compensation Range: CA$152K - CA$189K

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