Senior Software Developer, Book of Record (Leverage)

BUILD SOMETHING PEOPLE LOVE Wealthsimple is Canada’s leading financial innovator. The company offers a full suite of simple, sophisticated financial products across managed investing, do-it-yourself trading, cryptocurrency, tax filing, spending and saving. Wealthsimple currently serves more than 4 million Canadians and holds over $125 billion in assets under administration. The company was founded in 2014 by a team of financial experts and technology entrepreneurs, and is headquartered in Toronto, Canada. We're proud of what we've built — and we're just getting started. Read our Culture Manual https://www.wealthsimple.com/en-ca/culture and learn more about how we work https://www.wealthsimple.com/en-ca/careers. About the Team The Leverage team lives inside Book of Record (BOR) - the ledger of truth for every dollar that moves through Wealthsimple. Leverage owns the borrowing side of that ledger: the systems behind margin, portfolio lines of credit, and the lending products that let our clients do more with their money. When a client checks their buying power, borrows against their portfolio, or places a trade, our services are the ones deciding - accurately, and in real time - what's possible. We hold ourselves to a high bar, if you like problems where correctness genuinely matters and the systems have to hold up when markets open, you'll feel at home here. About the Role We're growing the Leverage team and looking for a Senior Software Developer to take real ownership of the services at the core of margin and lending. You'll join a small, high-trust group of senior engineers and own meaningful scope from early on - designing and building the backend systems that track balances and calculate buying power and collateral. It's backend-heavy, consequential work in a domain where the rules are real and the edge cases are plentiful. You'll partner closely with Product, Design, and neighbouring engineering teams to turn complex financial logic into experiences that feel s