Sr. Software Developer I - Payment Processing

Aylo Careers; Montreal (administrative region); On-site; 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

Sr. Software Developer I - Payment Processing

Established in 2004, we are a tech pioneer offering world-class adult entertainment and games on some of the internet’s safest and most popular platforms. With the support of an international team of dynamic and collaborative innovators, we are on a mission to enable safe user experiences and empower our communities by celebrating diversity, inclusion, and expression - all while maintaining robust trust-and-safety protocols.

We embrace the best of both worlds! Local talent can thrive in our collaborative office space with the flexibility of a hybrid work environment, while remote team members play an integral role in shaping our dynamic culture from afar. We have offices in Montreal (Quebec), Austin (Texas) and Nicosia (Cyprus).

*A select number of positions require full-time in office attendance*

We are looking for a highly skilled Senior Developer to design, build, and operate mission-critical payment platform services that ensure secure, reliable, and high-performance transaction processing. In this role, you will work on high-volume payment integrations, distributed systems, and backend services that directly impact customer experience and company revenue. Beyond software development, you will play a key role in platform resilience by participating in incident management, troubleshooting complex production issues, and driving continuous improvements following incidents.

What you’ll be doing:

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.

What you’ll need to be successful:

Must haves:

Minimum of 5 years of professional backend development experience.

Strong proficiency in PHP 8.3, Node.js, and TypeScript.

Solid understanding of modern backend frameworks, protocols, and architectures, including gRPC (Spiral RoadRunner), REST APIs, Webhooks, microservices, and event-driven architectures.

Good knowledge of cloud environments and distributed systems, including Google Cloud Platform (Firestore, Pub/Sub, Cloud Run), Kubernetes, Docker, and Helm.

Strong skills in databases, caching solutions, and messaging technologies, including Firestore, PostgreSQL, Redis, Orleans, GCP Pub/Sub, and Node-RED.

Familiarity with monitoring and observability tools, such as Elastic APM and the ELK Stack (Elasticsearch, Logstash, Kibana).

Strong understanding of CI/CD pipelines (GitLab), automated testing, and deployment best practices.

Knowledge of secure development principles, including OWASP Top 10 controls and secure coding practices.

Excellent problem-solving skills and the ability to thrive in high-availability, mission-critical production environments.

Nice Haves:

Expertise inpayment systems, transaction processing, or fintech integrations.

Experience with Jira and cross-tool automation.

Knowledge of payment industry standards, including PCI-DSS, tokenization, and 3D Secure.

Experience with incident response, on-call rotations, and production troubleshooting.

As an equal opportunity employer, we celebrate diversity and are committed to creating an inclusive environment for all employees

In this role you may be exposed to adult content