Role: Senior Ruby on Rails developer - Rest API, React.js
Location: Toronto, ON (Hybrid – 4 Days/Week Onsite)
Duration: 6–12 Months (Contract)
Job Summary
We are looking for a Senior Software Engineer (Ruby on Rails) to join a high-performing engineering team building scalable, secure, and customer-focused applications. In this role, you'll contribute to product strategy, collaborate with cross-functional teams, and lead the design, development, deployment, and maintenance of critical software solutions.
This opportunity offers the agility and ownership of a startup environment with the stability and scale of one of Canada's leading financial institutions.
Key Responsibilities
Design, develop, test, deploy, and maintain high-quality Ruby on Rails applications.
Write clean, scalable, and well-tested code that aligns with business requirements and engineering best practices.
Lead the planning, architecture, implementation, and maintenance of key software components.
Build new features and enhance existing functionality based on product roadmap priorities.
Ensure application reliability, performance, and production stability.
Participate in code reviews, architectural discussions, sprint planning, and delivery meetings.
Collaborate closely with Product Owners, UX/UI designers, and engineering teams to deliver customer-centric solutions.
Track work progress using Jira and Agile/Kanban methodologies.
Mentor junior developers and contribute to engineering best practices.
Promote secure coding practices and ensure the protection of sensitive customer data.
Required Qualifications
Bachelor's degree in Computer Science, Engineering, or equivalent professional experience.
5+ years of professional experience in software development.
Strong expertise in Ruby on Rails development.
Required Technical Skills
Backend Development
Ruby on Rails
Sidekiq
Redis
RESTful API development
Object-Oriented Programming (OOP)
Databases
MySQL or PostgreSQL
Database design and optimization
Data structures and performance tuning
Front-End Development
React.js
JavaScript
jQuery
HTML5
CSS
Webpack
Testing & Quality
Unit Testing
Integration Testing
Test-driven development (preferred)
Code reviews and quality assurance
Agile Development
Jira
Agile / Scrum
Kanban
Continuous delivery practices
Required Soft Skills
Strong analytical and problem-solving abilities.
Excellent verbal and written communication skills.
Collaborative mindset with the ability to work across Product, Design, and Engineering teams.
Ability to quickly learn new business domains and technologies.
Passion for application security and secure software development practices.
Preferred Qualifications
Cloud & DevOps
Docker
Kubernetes
AWS
Terraform
GitHub
CircleCI
Monitoring & Observability
New Relic
Dynatrace
Splunk
Sumo Logic
Additional Experience
Rust programming language
OpenAPI Specification
ISO 27001 or SOC 2 compliance
Experience building and deploying cloud-native applications
Why Join?
Work on impactful products used by millions of customers.
Collaborate with talented engineers, designers, and product leaders.
Influence technical architecture and product direction.
Access modern development tools and cloud technologies.
Be part of an innovative engineering culture focused on continuous learning and collaboration.
Senior Ruby on Rails developer - Rest API, React.js • Toronto, ON, ca
Senior Backend Engineer sought for Home Health Monitoring product.Requires Ruby, Java, and AWS expertise. Show more
A leading loyalty platform company based in Canada is seeking a Senior Full Stack Engineer.This remote, full-time role involves both front-end and back-end development across a modern tech stack, i... Show more
Seeking a Senior Full Stack Developer with Ruby on Rails expertise for a fast-scaling fintech company.Responsibilities include building and refining features, collaborating with a team, and improvi... Show more
Senior Software Engineer sought to design and maintain scalable cloud applications using Ruby on Rails and Ember. Show more
Develop backend solutions for a payroll platform, collaborating with cross-functional teams, using Ruby on Rails. Show more
Step into a senior technical leadership role shaping the next generation of urban rail as a Rail Systems Integration Lead.You will deliver a major rail extension project, ensuring complex new‑build... Show more
Seeking a Senior Backend Engineer with Ruby/Rails and GraphQL experience to improve patient workflows and optimize software systems for a health tech company.Responsibilities include implementing b... Show more
Seeking a Senior Full Stack Ruby on Rails Developer to design, build, and enhance a cloud-based investment management platform.Responsibilities include backend and frontend development, database op... Show more
Seeking a hands-on Ruby on Rails Team Lead in Calgary, Canada to lead a team in developing financial wellness products.Requires 4+ years of experience, team management skills, and Agile knowledge.O... Show more
AboutMealSuiteMealSuitebuilds end-to-end foodservice technology for healthcare and senior living organizations.Our mission is to help care teams deliver better dining experiences with less effort.A... Show more
A leading fintech innovator is seeking a Senior Software Developer for a remote-first role.You will design and build impactful features across web and mobile platforms, utilizing technologies such ... Show more
Ruby on Rails Developer (6 MONTHS CONTRACT).CURRENTLY LOOKING FOR 3 RoR DEVELOPERS - THE ROLE IS 100% REMOTE.THE CONTRACT IS FOR 6 MONTHS WITH A POSSIBILITY OF EXTENSION.You’ll work closely with ta... Show more
Elevate content management systems at Scribd, Inc.Senior Engineer focused on Ruby on Rails and Python.Engage in high-impact projects to improve metadata extraction and AI workflows.The Content Foun... Show more
Huawei Canada has an immediate permanent opening for a Senior Principal Architect.The web, Windowing and Graphics team is exploring novel architectures to accelerate the rendering of ArkUI and web ... Show more
Senior Software Engineer (Ruby on Rails - Core Scribd) - (Remote - US/Canada).For one of our clients, we are looking for a.Senior Software Engineer (Ruby on Rails - Core Scribd).As a Senior Softwar... Show more
Senior Software Developer needed to work on a legal tech platform using Ruby on Rails. Show more
Lead Developer role requiring expertise in React and Ruby on Rails, with responsibilities including software consulting, delivery, and client collaboration.The position emphasizes best practices, T... Show more
You’ll work closely with cross-functional stakeholders to deliver elegant, performant, and maintainable applications using.This role is ideal for someone who possesses a high level of agency, a "do... Show more
