Senior Software Developer, Book of Record – Core Balances

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Wealthsimple

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Founded 2014

💼 Consulting

🛡️ Insurance

💳 Fintech

🔥 Funding within the last year

💰 $393M Series E - Wealthsimple on 2025-10

Consulting • Insurance • Fintech

Wealthsimple is a Canadian financial technology company that provides consumer banking, investing, and wealth management services. It offers chequing accounts, savings, credit cards, self-directed trading (stocks, ETFs, options), cryptocurrency trading, managed portfolios, tax services, and advisory wealth management for high-net-worth clients. Wealthsimple combines digital-first banking and low-fee investing products aimed at retail customers, along with tools and educational content to support personal finance.

📋 Description

• Design, build, and operate backend services powering real-time balances, reservations, and financial activity • Own meaningful scope end-to-end, from technical design through reliable production operation • Solve problems involving real-time correctness, low latency, high availability, write paths, event consumers, and database contention • Evolve architecture by consolidating services and data models, establishing a single entry point for financial activity, isolating failure domains, and improving recovery and backfill • Perform migrations on live financial systems without downtime or incorrect client balances • Raise quality and operational excellence through design, code review, and production ownership • Mentor and grow engineers through pairing, code review, and feedback • Collaborate with Product and neighboring engineering teams • Use AI-assisted tooling to ship faster and more safely

🎯 Requirements

• 5+ years of professional software engineering experience • Track record of building and operating critical production systems • Strong backend engineering and system design skills • Experience with highly available, low-latency services under real load • Kotlin on the JVM experience, or strong Java experience / comparable stack experience • Production ownership and incident response judgment • Comfort working in mature codebases and improving systems incrementally • Strong software quality practices, including tested, maintainable, and observable code • Clear communication and collaboration with Product and engineering teams • Curiosity about financial systems and client impact • Enthusiasm for AI-assisted development • Fintech, banking, trading, regulated-domain, ledger, reconciliation, event-driven architecture, Kafka, Flink, GraphQL, Apollo Federation, Kubernetes, Postgres, database performance, or live-system migration experience is nice to have

🏖️ 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 • Unlimited sick and mental health days per year • Ability to work outside Canada for up to 90 days per year • Employee resource groups, including Rainbow (2SLGBTQ), Women of WS, and Black at WS • Equity compensation for permanent employees