Lead, Senior and Intermediate - Backend Engineer

HRB; Toronto; On-site; CAD 120,000 - 180,000; Full time

Job summary

HRB is seeking a Lead Backend Engineer with fintech experience to architect and scale payments infrastructure, ledger systems, and financial APIs. You will own core backend services, ensuring reliability and compliance while handling millions of dollars in daily transactions.

The role emphasizes shipping secure, compliant financial features, collaborating with CTO and product teams, and leading a high-stakes fintech engineering effort within a cloud-first environment.

Qualifications

• 7+ years backend engineering experience
• 2+ years fintech/payments experience
• Expert-level with NestJS/Node.js and TypeScript
• Hands-on with ledger systems or financial data modeling
• Scaled backend systems for high transaction volumes
• Proficient in PostgreSQL and database optimization
• Experience with payment processing, financial APIs, and regulatory compliance (PCI, SOC 2)
• Ownership of critical systems in fintech environment
• Clear communication of complex technical/financial concepts

Responsibilities

• Build and scale backend services using NestJS/TypeScript on Google Cloud Platform
• Design and maintain ledger systems and financial data models
• Architect and optimize payment processing pipelines
• Integrate with financial APIs, payment processors, and banking systems with PCI compliance
• Build resilient microservices with PubSub for event-driven architecture
• Manage infrastructure as code using Terraform and GCP services
• Own financial systems end-to-end from design to production monitoring
• Collaborate with product and compliance teams to ship secure financial features

Skills

NestJS/Node.js

TypeScript

Ledger systems

PostgreSQL

Google Cloud Platform

PCI compliance

Microservices

Financial APIs

Pub/Sub

Terraform

Tools

Terraform

Pub/Sub

Cloud Run

Cloud SQL

Google Cloud Platform

Job description

Lead, Senior and Intermediate - Backend Engineer

About the Role

We're looking for a Lead Backend Engineer with deep fintech experience to join our core engineering team. You'll be responsible for building and scaling the critical payment infrastructure, ledger systems, and financial APIs that power our platform. This is a backend-focused role where you'll work on high-stakes financial systems processing millions of dollars in transactions daily. You'll work closely with our CTO and engineering team to architect reliable, compliant, and scalable financial systems that our users depend on for their most important payments.

In this role, you’ll:

• Build and scale backend services using NestJS and TypeScript on Google Cloud Platform
• Design and maintain robust ledger systems and financial data models using Google Cloud SQL and PostgreSQL
• Architect and optimize payment processing pipelines handling large transaction volumes
• Integrate with financial APIs, payment processors, and banking systems while ensuring PCI compliance
• Build resilient microservices with PubSub for event-driven architecture
• Manage infrastructure as code using Terraform and GCP services
• Own critical financial systems end-to-end, from design to production monitoring
• Collaborate with product and compliance teams to ship secure, compliant financial features

You’re someone who:

• Has 7+ years of backend engineering experience, with 2+ years in fintech or payments
• Is expert-level with NestJS/Node.js and TypeScript for building production APIs
• Has hands-on experience with ledger systems, double-entry bookkeeping, or financial data modeling
• Has scaled backend systems handling high transaction volumes (millions of transactions/month)
• Is proficient with PostgreSQL, database optimization, and Google Cloud Platform
• Has experience with payment processing, financial APIs, and regulatory compliance (PCI, SOC 2, etc.)
• Brings strong ownership to critical systems and thrives in a high-stakes fintech environment
• Communicates clearly about complex technical and financial concepts

Required experience:

• Fintech/payments industry experience with large-scale transaction processing
• Ledger systems or accounting system development
• Financial API integrations (payment processors, banks, card networks)
• Database design for financial systems and audit trails
• GCP services (Cloud SQL, PubSub, Cloud Run, etc.)

Nice-to-haves:

• Experience with Terraform for infrastructure management
• PCI DSS compliance and security framework experienceReal-time payment systems or instant settlement experience
• Previous experience at high-growth fintech companies
• Open banking or financial data aggregation experience