Senior Software Developer, Ledger

Hybrid

Responsibilities

BUILD SOMETHING PEOPLE LOVE Wealthsimple's mission is to help everyone achieve financial freedom – by making financial services simple, transparent, and low-cost.
- Drive audit trails and compliance reporting so every transaction is traceable, every state change is logged, and every report is reproducible.

WHAT YOU'LL DO - Own core ledger infrastructure: design, build, and evolve the systems that record financial transactions accurately and durably, using Java/Kotlin in a microservices architecture.
experience and a track record of building reliable, high-correctness systems in Java, Kotlin, or similar JVM languages. - Solid SQL skills and comfort working across relational databases at scale. -
You work autonomously across the full development lifecycle, take ownership of improvements that reduce toil, and influence technical decisions within your domain. - An AI-first mindset.
You leverage AI tools to accelerate development and raise the bar for code quality, with hands-on
Experience in fintech, banking, or regulated financial services, where correctness isn't optional and audit trails aren't an afterthought. -
Experience with ERP integrations (e.g., Oracle EBS). - Familiarity with event-driven architectures and stream processing, particularly Kafka. - Familiarity with regulatory reporting frameworks in Canadian financial services. - Prior work on event-sourced or append-only ledger architectures.
That means we're always looking for better ways to work — whether that's new tools, AI, or rethinking how we approach a problem.
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.

We're Canada's largest fintech, trusted by over 3 million clients with more than $100 billion in assets.
BONUS POINTS - Financial domain fluency — you understand double-entry accounting, can read a chart of accounts, and know why precision and immutability matter in ledger design. -
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 🌎 We are a hybrid team with over 1,500 employees across North America.