Senior Software Engineer, Treasury Services for our Fintech client that provides institutional-grade crypto

Contract: 6 Months +

Work Model: 3 Days Onsite in Toronto, Ontario

Hours: 37.5

Day-to-Day (D2D) Responsibilities

• Design, build, and maintain Treasury Services systems (ledger, account management, transaction orchestration, cash flow management).
• Deliver fault-tolerant, production-ready financial systems that operate at scale.
• Ensure double-entry accounting correctness and support treasury/finance operations.
• Collaborate with front-office, platform, and QA teams to integrate functionality and ensure business cohesion.
• Deploy solutions in AWS and integrate with CI/CD pipelines.
• Support integrations with custodians, global payments providers, and blockchain systems (e.g., Fireblocks).
• Document systems for both technical and business teams.
• Mentor junior engineers and lead complex feature implementation.
• Identify opportunities to improve performance, scalability, and developer productivity.

• 7+ years software engineering experience with deep expertise in Java (best practices, backend systems).
• Strong experience with accounting/finance systems (double-entry, transactions, cash flow).
• Hands-on experience with high-performance, low-latency architectures.
• Solid knowledge of event-driven design and messaging systems (Kafka).
• Strong background in SDLC, CI/CD, databases, networks, and API development.
• AWS production experience.
• Excellent communication skills and ability to work independently while collaborating across teams.

• Experience with treasury operations, global payments, or banking systems.
• Exposure to custodians and blockchain solutions (e.g., Fireblocks).
• Familiarity with NodeJS for front-office integration.
• Experience in digital assets, fintech, or trading environments.
• Mentorship or leadership experience in growing engineering teams.