Experienced Intermediate Software Engineer, Ruby on Rails

CanadaRemoteFull-timemid

Software EngineerSoftware Engineering

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Quick Summary

Requirements Summary

At least 5 years of professional experience building and maintaining production applications with Ruby on Rails. Degree in Computer Science or a related field, or equivalent practical experience.

Technical Tools

Software EngineerSoftware Engineering

This role offers the opportunity to build and evolve a well-established trading journal used by individual traders and proprietary trading firms. You will take ownership of product development from initial idea through deployment, working across a Ruby on Rails application, broker integrations, and AI-powered features. The team follows an AI-first engineering approach, using tools such as Claude Code to accelerate development while maintaining strong standards for code quality, testing, and reliability. You will collaborate closely with another senior engineer and the product lead in a small, hands-on environment. The position offers significant ownership, direct production responsibility, and the opportunity to deliver improvements that users experience every week.

Design, develop, test, and deploy features across the Ruby on Rails application, working from database architecture through to user-facing interfaces.
Own broker and trading-platform integrations, including the import processes that bring users’ trading data into the application.
Develop AI-powered features that help traders analyze and better understand their trading activity.
Create and maintain evaluation processes to verify the quality, accuracy, and reliability of AI-powered functionality.
Take responsibility for the full development lifecycle, including reviewing code, testing changes, deploying updates, and addressing production issues.
Share production operations with another senior engineer, including releases, monitoring, troubleshooting, and incident resolution.
Improve the reliability of critical application functionality, particularly trading data imports and integrations.
Help shape the team's AI-assisted engineering practices, including development tools, testing approaches, and workflows.
Deliver customer-facing improvements regularly and contribute to the product's continued growth.
Build familiarity with the existing codebase quickly and independently manage fixes, deployments, and rollbacks.

Requirements

~1 min read

At least 5 years of professional experience building and maintaining production applications with Ruby on Rails.
Degree in Computer Science or a related field, or equivalent practical experience.
Proven ability to take ownership of software features from concept and implementation through deployment and ongoing maintenance.
Experience operating production applications, including troubleshooting issues, deploying changes, and managing rollbacks independently.
Daily experience using AI coding tools, with the ability to review, validate, test, and explain AI-generated code before release.
Experience building applications or features that use AI models.
Strong written communication skills and the ability to collaborate effectively within a small engineering team.
Ability to learn unfamiliar codebases and technologies quickly and work with a high degree of autonomy.
Nice to have: Experience developing iOS applications using Swift.
Nice to have: Interest in trading, financial markets, or trading-related technology.
Ability to work at least four hours per day overlapping with Brasília time (UTC−3).
Must be based in Canada.