Payments Backend Engineer - TypeScript & Ledger Systems

Antler; Toronto; On-site; CAD 90,000 - 130,000; Full time

Benefits offered by this job

Equity

In-office five days a week

Job summary

Chexy, a Toronto-based fintech, is hiring a Backend Engineer to build payment systems in our core backend service. You’ll work on inflows, outflows, ledgering, settlement, and direct integrations with card networks and banks, ensuring precise, well-tested code that handles real money for real people.

You’ll write production-grade TypeScript (NestJS, Prisma, PostgreSQL), develop durable event-driven workflows using Pub/Sub and Temporal, and build backends for our web and mobile apps.

Qualifications

• 2+ years of backend experience with TypeScript/Node in production.
• Strong knowledge of relational databases, schema design, and transactions.
• Familiarity with event-driven systems or message queues.

Responsibilities

• Build and maintain payment processing across inflows, outflows, and multi-rail settlement.
• Work inside our double-entry ledger - posting entries, reconciling against processors and banks, and keeping the books provably correct.
• Build and extend integrations with payment networks and Canadian banking rails.
• Write clean, well-tested, production-grade TypeScript (NestJS, Prisma, PostgreSQL).
• Build event-driven and durable workflows (Google Cloud Pub/Sub, Temporal) so payments retry, recover, and never double-send.
• Build APIs consumed by our web and mobile apps through our backend-for-frontend layer.
• Instrument what you ship - Datadog traces, structured logs, and alerts are part of done.
• Review code, write tests, and help keep our engineering standards real.

Skills

TypeScript/Node

Relational databases

Idempotency concepts

Event-driven systems

AI coding tools

Clear PRs / communication

Ownership mindset

Job description

Chexy, a Toronto-based fintech, is hiring a Backend Engineer to build payment systems in our core backend service. You’ll work on inflows, outflows, ledgering, settlement, and direct integrations with card networks and banks, ensuring precise, well-tested code that handles real money for real people.

You’ll write production-grade TypeScript (NestJS, Prisma, PostgreSQL), develop durable event-driven workflows using Pub/Sub and Temporal, and build backends for our web and mobile apps.