Open to opportunities

Andy S

@andys1

Message

Senior Ruby backend engineer specializing in API integrations and robust SaaS systems.

Canada

Message

What I'm looking for

I seek backend-focused roles building scalable API-driven SaaS systems, emphasizing secure payment integrations, automation, and pragmatic team collaboration.

I am a Senior Software Engineer with 18 years of experience building SaaS applications, focused on backend development, API integrations, and unit testing. I have led integrations with 3rd-party POS systems, developed GraphQL APIs, automated processes with Sidekiq, and acted as a security lead to identify and mitigate vulnerabilities.

My background includes building secure payment and client portals, integrating multiple payment gateways (including Cybersource) with PCI considerations, and improving operational efficiency through automation and monitoring using tools like Datadog and Snowflake. I deliver reliable, high-quality software that solves complex problems and is valued by users.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

MSI/ezCater

Nov 2017 - May 2025 (7 years 6 months)

Led backend development and integrations for the Integrations team, building GraphQL APIs and automating menu sync to reduce manual intervention and improve data accuracy. Served as security lead, identifying and mitigating vulnerabilities and integrating multiple payment gateways to enhance secure transaction processing.

Ruby Ruby on Rails GraphQL PostgreSQL Sidekiq Kafka AWS API Integration

Mid Software Engineer

Pacific Customs Brokers Ltd

Apr 2013 - Nov 2017 (4 years 7 months)

Built fullstack ColdFusion applications including a secure client portal for customs processing and an internal accounting portal, and led Cybersource payment integration to meet PCI compliance. Improved reporting and payment tracking through new internal tools.