Steve Oliveira

Senior Software Engineer

Senior software engineer with over a decade of experience designing and delivering scalable, high-impact full-stack systems across fintech, e-commerce, and SaaS.

steve@oliveira.io +1 647 701 8055 steveoliveira.com Vaughan, Ontario

Experience

Shopify

Senior Software Engineer

Sep 2021 - Jun 2025

  • Led projects delivering enterprise-focused features using Ruby on Rails, React, GraphQL, and MySQL.
  • Partnered with a leading payments provider to launch localized Shopify payment solutions across EMEA, supporting international expansion and improving merchant onboarding
  • Worked closely with product and design teams to launch new platform features that increased user engagement and retention.
  • Mentored junior developers, leading to enhanced code quality, documentation, and faster onboarding.

Bitaccess

Senior Software Engineer

Sep 2020 - Sep 2021

  • Modernized legacy services using NestJS and Mongoose, significantly improving maintainability and code scalability.
  • Streamlined deployment workflows using AWS CDK and Copilot, reducing reliance on third-party PaaS and accelerating time-to-production.
  • Led a small development team, introducing agile practices that improved project delivery timelines and team productivity.

Rebel.com

Senior Software Engineer

Dec 2017 - Sep 2020

  • Built scalable backend systems powering a high-volume cryptocurrency platform using NestJS and PostgreSQL.
  • Designed AWS-based infrastructure using Lambda, API Gateway, and messaging services, ensuring high availability and responsiveness.
  • Designed and deployed automated trading bots to monitor crypto markets in real-time, enabling efficient arbitrage across exchanges.

Nascent Digital

Senior Software Engineer

Sep 2016 - Nov 2017

  • Rebuilt backend services for the Air Miles app to handle traffic spikes during national promotions, improving performance and stability using NodeJS and Restify.
  • Developed custom auto-scaling solutions on AWS to handle high traffic events, reducing downtime during peak periods.
  • Collaborated with stakeholders to define project scope and future enhancements, improving alignment with business objectives and user needs.

Nasdaq

Software Engineer

Dec 2013 - Aug 2016

  • Modernized legacy system serving the frontend for Nasdaq's Index Calculation System using Symfony, resulting in improved maintainability and overall system stability.
  • Created a WebSocket solution for real-time ticker data, replacing outdated Java applets, resulting in a modern and improved user experience.
  • Worked closely with product and design teams to launch new platform features used by major stock exchanges.

CarltonOne

Software Engineer

Feb 2010 - Nov 2013

  • Developed full-stack features for a loyalty SaaS platform with Symfony, Doctrine, and MySQL, enhancing platform capabilities and customer satisfaction.
  • Optimized data import processes for increased reliability and performance, reducing import failures and delays.
  • Facilitated client data migrations, ensuring smooth onboarding onto the platform.
  • Implemented SAML SSO authentication for enterprise customers, improving security and simplifying user management.

Skills

Languages

Ruby TypeScript HTML CSS JavaScript Elixir PHP

Frameworks

Ruby on Rails Node.js NestJS React Next.js Tailwind CSS Phoenix Framework

Databases

MySQL PostgreSQL MongoDB

Tools & Cloud

Git AWS

Education

Bachelor's Degree in Philosophy

University of London International Programmes

2012 - 2016

Diploma in Computer Programming and Analysis

Seneca College

Sep 2001 - Jun 2004

Certificates

Amazon

AWS Certified Solutions Architect – Associate

Jan 2020