Posted 2 months ago
Senior Backend Engineer
@ hireVouch
Toronto, Ontario
Overview
hireVouch is hiring a Senior Backend Engineer to build and own payment systems in its core backend, including inflows, outflows, ledgering, settlement and integrations with card networks and banking systems. The work involves NestJS, TypeScript, PostgreSQL, Pub/Sub and Redis at high transaction volume, with on-call rotations for production payment systems. The posting requires 5+ years of backend experience, including at least 2 years on financial or high-volume transaction systems.
Responsibilities:
- Build and maintain payment processing, inflows, outflows and settlement
- Design double-entry ledger systems
- Develop integrations with payment networks and banking systems
- Design event-driven systems on Google Cloud Pub/Sub
- Build high-volume APIs consumed by web and mobile apps
Requirements summary:
- 5+ years backend engineering experience, 2+ years on financial or high-volume systems
- Strong NestJS, Node.js and TypeScript experience in production
- Deep knowledge of PostgreSQL, schema design and query optimization
- Experience with message queues and event-driven architecture
- Understanding of ledgers, reconciliation and idempotency
- Prisma and Redis experience is an asset
Tools & skills
Source and dates
Source type not verified · cats
- Employer posting date
- 2026-08-25
- First seen by our source
- 2026-10-10
- Source record updated
- 2026-11-06
These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.
Job details
| Seniority | Senior |
| Department | Software development |
| Experience | 5+ years |
| Travel | air: none · ground: none |
| Work setting | Office |
| Position | Mostly sitting |
| Physical demands | physical low · computer high |
| Languages | English |
Summary and details written by AI from the posting; the employer’s posting is the authority.
hireVouch
Saved company profile
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Full company description
Our Edge Hiring and retaining skilled talent is paramount for your company’s success. Finding the right people – who have the right skills and right personality fit – can be incredibly challenging in today’s job market. Here at hireVouch we can help you acquire the highest calibre candidates through the relationships we have formed over more than a decade. Our approach is an ethical one. Rather than use the often-employed aggressive methods typical of the recruitment industry, our focus is placed largely on referral-based networking. Getting it right really matters to us. Let us leverage our network of talent that has already been vouched for by leading professionals in the industry to help your business grow. Services Offered Contingency and Retained Search Here at hireVouch we focus on sourcing best-in-class candidates for rewarding positions in Canada and the US. We have extensive expertise in Contingency, Retained and Temporary placement, primarily within the IT sector. On-Site Search Assistance We have a trusted network of HR and search professionals who can provide on-site search services to help fulfill immediate needs as well as help train internal staff in finding the highest quality talent Company Marketing Strategy We know how competitive the job market can truly be and how important it is to have a strategy to attract talent. At hireVouch we have extensive expertise in helping companies better market themselves. We can provide the tools and knowledge that will assist you in making your business a highly attractive place to work. Developing a company marketing strategy is key to hiring the talent you need to grow.
- LinkedIn followers
- 68,412
- People associated on LinkedIn
- 7
- Reported office locations
- 215 Spadina Avenue, 4th Floor, Toronto, Ontario M5T 2C7, CA
- Other recorded names
- hireVouch
- Profile identifies a recruitment agency
- Yes
Our Edge Hiring and retaining skilled talent is paramount for your company’s success. Finding the right people – who have the right skills and right personality fit – can be incredibly challenging in today’s job market. Here at hireVouch we can help you acquire the highest calibre candidates through the relationships we have formed over more than a decade. Our approach is an ethical one. Rather than use the…
| Field | Value |
|---|---|
| Industry | Staffing and Recruiting |
| Company size | 2-10 employees |
| Headquarters | Toronto, Ontario |
| Organization type | Privately Held |
| Year founded | 2016 |
| Open jobs on Jobsy | 175 |
| View page |
About the Role
We're looking for a Senior Backend Engineer to own and build payment systems in our Engine, our core backend repository. You'll work on the systems that move money—payment inflows, outflows, ledgering, settlement, and direct integrations with card networks and banking systems.
This role is about building clean, scalable, production-grade financial infrastructure. Every line of code you write will process real money for real people, which means your work needs to be precise, well-tested, 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 multi-rail settlement in our Engine
- Design and implement ledger systems using double-entry bookkeeping principles to ensure financial accuracy and auditability
- Develop and optimize direct integrations with payment networks (Visa Direct, American Express) and banking systems (e-Transfer, PAD, Bill Pay, etc.)
- Write clean, well-tested, production-grade code in NestJS and TypeScript following scalable architecture patterns
- Design event-driven 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 end-to-end
- Participate in on-call 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 high-volume 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 high-volume APIs and microservices
- Understanding of event-driven architecture and message queues (Google Cloud Pub/Sub, Kafka, RabbitMQ, or similar)
- Experience with financial systems concepts: ledgers, double-entry 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, well-tested code with strong attention to detail
- Strong communication skills and ability to collaborate across teams
- Self-directed with ownership mentality—you take pride in shipping reliable, production-grade 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 infrastructure-as-code practices
- Experience building ledger systems or working with accounting principles
- Knowledge of Canadian payment systems (e-Transfer, PAD, Bill Pay)
- Experience with API documentation (Swagger/OpenAPI)
- Contributions to open-source projects in payments, fintech, or backend infrastructure
- Background in regulated industries or compliance-heavy environments
Journal
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