Job Title

Senior Backend Engineer At Chexy, we''''re reimagining how Canadians manage their largest expenseslike rent, tuition, and insuranceby transforming them into opportunities to build credit, earn rewards, and gain financial flexibility. We''''re the first platform in Canada that lets users pay nearly any bill using their credit card, while unlocking meaningful benefits like cashback, points, and creditbuilding tools. With $1B+ in annual payment volume and millions of transactions per month, we''''re building financial infrastructure that needs to be fast, reliable, and bulletproof. About the Role We''''re looking for a Senior Backend Engineer to own and build payment systems in Chexy Engine , our core backend repository. You''''ll work on the systems that move moneypayment inflows, outflows, ledgering, settlement, and direct integrations with card networks and banking systems. This role is about building clean, scalable, productiongrade financial infrastructure. Every line of code you write will process real money for real people, which means your work needs to be precise, welltested, and built for scale. You''''ll design and implement the payment systems that can handle billions in annual transaction volume. What You''''ll Be Doing Build and maintain payment processing systems handling inflows, outflows, and multirail settlement in Chexy Engine Design and implement ledger systems using doubleentry bookkeeping principles to ensure financial accuracy and auditability Develop and optimize direct integrations with payment networks (Visa Direct, American Express) and banking systems (eTransfer, PAD, Bill Pay, etc.) Write clean, welltested, productiongrade code in NestJS and TypeScript following scalable architecture patterns Design eventdriven systems using Google Cloud Pub/Sub for reliable, asynchronous payment processing Build APIs consumed by our web and mobile applications, ensuring performance and reliability at scale Optimize database queries and schema design in PostgreSQL (Cloud SQL) using Prisma ORM Implement caching strategies with Redis to handle high transaction volumes efficiently Write comprehensive tests and participate in code reviews to maintain code quality standards Collaborate with frontend, mobile, and infrastructure teams to ship features endtoend Participate in oncall rotations for production payment systems Who We''''re Looking For 5+ years of backend engineering experience, with at least 2+ years building production financial systems, payment processing, or highvolume transaction systems Strong experience with NestJS, Node.js, and TypeScript in production environments Deep understanding of relational databases (PostgreSQL preferred) including schema design, query optimization, and transactions Experience with ORMs (Prisma experience is a plus) Proven track record building and maintaining highvolume APIs and microservices Understanding of eventdriven architecture and message queues (Google Cloud Pub/Sub, Kafka, RabbitMQ, or similar) Experience with financial systems concepts: ledgers, doubleentry bookkeeping, reconciliation, idempotency, transaction integrity Strong grasp of Redis or similar caching technologies for performance optimization Experience with payment processing, banking integrations, or fintech products Ability to write clean, maintainable, welltested code with strong attention to detail Strong communication skills and ability to collaborate across teams Selfdirected with ownership mentalityyou take pride in shipping reliable, productiongrade systems Bonus Points Direct experience with payment network integrations (Visa, Mastercard, Amex) or banking APIs Experience with Google Cloud Platform (Cloud Run, Cloud SQL, Pub/Sub) Familiarity with Terraform or infrastructureascode practices Experience building ledger systems or working with accounting principles Knowledge of Canadian payment systems (eTransfer, PAD, Bill Pay) Experience with API documentation (Swagger/OpenAPI) Contributions to opensource projects in payments, fintech, or backend infrastructure Background in regulated industries or complianceheavy environments Why Join Chexy? Build payments infrastructure that matters: Your code moves billions of dollars and powers lifechanging financial transactions for thousands of Canadians Join a tightknit team: Work directly with founders and senior engineers who trust you to make critical decisions Early equity: Access equity in a highgrowth fintech company that''''s just getting started Own real impact: No bureaucracy, no endless meetingsjust smart people solving hard problems together Toronto office: Work inoffice 5 days a week with the team in Toronto How We Hire We keep our hiring process clear and human. You''''ll go through a mix of conversational interviews and technical deepdives designed to showcase your strengths. We care about how you think, how you''''ve solved real backend and payment problems, and how you collaboratenot just trivia questions. And we make sure there''''s space for your questions too. Chexy is an equal opportunity employer. If you require any accommodations or support during the hiring process, let us know and we''''ll do our best to help. #J-18808-Ljbffr