Senior Payment Systems Engineer

Aylo Careers; Montreal (administrative region); Hybrid; CAD 90,000 - 140,000; Full time

Job summary

Aylo Careers in Montreal (Quebec) is seeking a Sr. Software Developer I to design, build, and operate mission-critical payment platform services. You will work on high-volume payment integrations, distributed systems, and backend services impacting customer experience and revenue.

The role offers a hybrid work environment with in-office attendance for a select number of positions. You will mentor peers, improve CI/CD pipelines, and ensure secure, scalable payment processing.

Qualifications

• Minimum of 5 years of professional backend development experience.
• Proficiency in PHP 8.3, Node.js, and TypeScript.
• Experience with gRPC, REST, Webhooks, microservices and event-driven architectures.
• Cloud and distributed system knowledge (GCP, Kubernetes, Docker, Helm).
• Strong DB and caching skills (Firestore, PostgreSQL, Redis).
• Familiarity with monitoring tools (Elastic APM, ELK).
• CI/CD pipelines and automated testing practices.
• Secure development practices (OWASP Top 10).

Responsibilities

• Design, develop, and maintain scalable services that support payment gateways, transaction processing, and financial workflows.
• Build secure and resilient integrations with third-party payment providers and internal platforms.
• Implement APIs, event-driven services, and microservices that meet the highest standards of performance, reliability, and security.
• Write clean, maintainable, and thoroughly tested code while adhering to engineering best practices and development standards.
• Conduct code reviews and provide technical mentorship to promote engineering excellence across the team.
• Enhance CI/CD pipelines, deployment automation, and developer tooling.
• Optimize payment processing workflows to improve availability, scalability, performance, and transaction accuracy.
• Participate in incident management, production support, and root cause analysis to continuously improve platform stability.

Skills

PHP 8.3

Node.js

TypeScript

gRPC

REST APIs

Webhooks

microservices

event-driven

Kubernetes

Docker

Helm

Firestore

PostgreSQL

Redis

GitLab CI/CD

OWASP Top 10

Secure coding

Tools

Jira

Job description

Aylo Careers in Montreal (Quebec) is seeking a Sr. Software Developer I to design, build, and operate mission-critical payment platform services. You will work on high-volume payment integrations, distributed systems, and backend services impacting customer experience and revenue.

The role offers a hybrid work environment with in-office attendance for a select number of positions. You will mentor peers, improve CI/CD pipelines, and ensure secure, scalable payment processing.