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Ruby On Rails Contractor Jobs in Ontario (NOW HIRING)

Justworks

Senior Software Engineer, AI

Toronto, ON · Hybrid

CA$167K - CA$235K/yr

Golang, Ruby on Rails, Javascript, Java, C#, Python, VueJS, MySQL, Kafka, AWS, Git, Memcache, Redis, ElasticSearch, Docker, Terraform, Kubernetes, CircleCI, DataDog The base wage range for this ...

ContactMonkey

Principal Software Engineer

Toronto, ON · On-site

Our backend is Ruby on Rails and our frontends is Vue. * Write real TypeScript. The AI-adjacent services are TS-first and that is likely to grow. * Understand API design past the happy path ...

Human Agency

Senior Full-Stack Engineer

Toronto, ON · On-site

US Applicants - Full-Time; Canadian Applicants - Independent Contractor About Human Agency We're ... Proficiency in Python and Ruby on Rails , with significant backend experience. * Experience in ...

Financeit

Director of Engineering (Centah)

Toronto, ON · On-site

Experience with Ruby on Rails or similar backend frameworks. * Experience with modern JavaScript frontend frameworks; Ember.js experience is a strong asset. * Strong understanding of CI/CD, automated ...

Clio

Software Developer, Mobile

Toronto, ON · Remote

CA$129K - CA$149K/yr

... and Ruby on Rails * The ability to learn new technologies quickly and work effectively in an ever-evolving environment that includes distributed teams and customers * Demonstrated success in ...

Clio

Senior ML Platform Engineer

Toronto, ON · On-site

CA$182K - CA$209K/yr

Solid Python or Ruby on Rails development skills, with experience building production-grade applications, services, or ML tooling * Expertise in cloud infrastructure (AWS, GCP, or Azure), including ...

Clio

Senior ML Platform Engineer

Toronto, ON

CA$182K - CA$209K/yr

Solid Python or Ruby on Rails development skills, with experience building production-grade applications, services, or ML tooling * Expertise in cloud infrastructure (AWS, GCP, or Azure), including ...

Arcadis

Track Inspector

Toronto, ON

This role is suited for a technically oriented professional with field experience on rail or ... The role will verify that contractor activities are carried out in accordance with IFC drawings ...

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All JobsRuby On Rails Contractor JobsRuby On Rails Contractor Jobs in Ontario

Ruby On Rails Contractor information

What is the difference between Ruby On Rails Contractor vs Ruby On Rails Developer?

AspectRuby On Rails ContractorRuby On Rails Developer
CredentialsTypically no formal certification required, but experience is keyOften holds a degree or certification in computer science or related fields
Work EnvironmentFreelance, project-based, often remoteFull-time or part-time employment within a company or agency
Employer & Industry UsageHired by various clients across industries for specific projectsEmployed by companies to develop and maintain applications
Search & Comparison IntentLooking for flexible, short-term project workSeeking ongoing, in-house or remote development roles

In summary, a Ruby On Rails Contractor is typically a freelance professional hired for specific projects, offering flexibility and diverse experience. A Ruby On Rails Developer usually works as a full-time employee, focusing on long-term application development within a company. Both roles require strong Rails skills but differ mainly in employment type and work setup.

What are Ruby on Rails contractors?

Ruby on Rails contractors are professionals who specialize in building web applications using the Ruby on Rails framework. They are typically hired on a contract basis, either for short-term projects, specific features, or to augment in-house development teams. These contractors handle tasks such as backend development, API integration, database management, and sometimes front-end work, all centered around the Rails ecosystem. Their expertise allows businesses to rapidly develop, maintain, or upgrade web applications efficiently.

What are the key skills and qualifications needed to thrive as a Ruby On Rails Contractor, and why are they important?

To thrive as a Ruby On Rails Contractor, you need strong programming skills in Ruby, expertise in the Rails framework, and a solid understanding of web application architecture, typically backed by experience or a relevant degree. Familiarity with tools like Git, PostgreSQL/MySQL, RESTful APIs, and deployment platforms such as Heroku or AWS is often required. Excellent problem-solving, time management, and communication skills help contractors efficiently collaborate with clients and teams. These skills ensure high-quality, maintainable code and successful project delivery in competitive, fast-paced environments.

How much do Ruby on Rails programmers make?

Ruby on Rails contractors typically earn between $50 and $150 per hour, depending on experience, location, and project complexity. Senior developers with specialized skills or certifications can command higher rates, especially for remote or freelance work.

What is the average salary in Ruby on Rails?

The average salary for a Ruby on Rails contractor varies depending on experience, location, and project scope, but typically ranges from $70,000 to $130,000 annually. Contractors with strong skills in Ruby, Rails, and related tools like JavaScript or PostgreSQL tend to earn higher rates. Freelance or contract roles may pay hourly rates between $50 and $150, depending on expertise and market demand.

What are some common challenges Ruby On Rails Contractors face when joining a new development team?

Ruby On Rails Contractors often need to quickly adapt to existing codebases and team workflows, which can pose challenges if documentation is sparse or coding standards differ. Additionally, contractors must rapidly build rapport with permanent team members to ensure smooth collaboration, particularly in agile environments. Balancing multiple projects or client expectations can also require strong time management and communication skills. Being proactive about asking questions and clarifying requirements can help overcome these hurdles and contribute effectively from the start.

Is Ruby on Rails still in demand?

Ruby on Rails remains in demand for web development, especially for startups and companies seeking rapid application deployment. Skilled Rails developers with knowledge of front-end integration and database management are sought after, and the framework continues to be supported with regular updates and a strong community.

Is Ruby on Rails still used in 2026?

Ruby on Rails remains a popular web development framework for contractors and developers due to its simplicity and strong community support. While newer frameworks have gained popularity, many companies continue to use Rails for building scalable web applications, and demand for Rails developers persists in 2026.
What are popular job titles related to Ruby On Rails Contractor jobs in Ontario? For Ruby On Rails Contractor jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Ruby On Rails Contractor jobs in Ontario look for? The top searched job categories for Ruby On Rails Contractor jobs in Ontario are:
Ruby On Rails Contractor jobs near you
Infographic showing various Ruby On Rails Contractor job openings in Ontario as of June 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.
Senior Software Engineer, AI

Senior Software Engineer, AI

Justworks

Toronto, ON • Hybrid

CA$167K - CA$235K/yr

Other

Posted 20 days ago

Justworks rating

8.2

Company rating: 8.2 out of 10

Based on 9 frontline employees who took The Breakroom Quiz

46th of 204 rated it services

Job description

Who You Are

You are self-driven and like to work with others to remove roadblocks. You are curious and love to explore and learn new technologies. You have demonstrated the ability to build, deploy, and maintain large-scale, complex applications. You care more about solutions and impacting the customer experience than using a particular tool or framework.

About the role:

You will join a small, highly autonomous cross-functional team to build AI agents that fundamentally transform how operations work at scale. Instead of writing bespoke software for every workflow, we are developing an agent platform that can read operational knowledge, reason about it in context, and execute tasks end-to-end. This approach allows us to scale complexity through knowledge and reasoning, rather than simply through code.

This is an opportunity to join a foundational team, which currently consists of fewer than five engineers. The work spans critical areas including LLM-powered agent design, robust backend service architecture, tool and integration development, and sophisticated knowledge infrastructure.

We are seeking a Senior Software Engineer with a strong passion for building AI-native systems in a product environment. The ideal candidate will be able to take ownership of large segments of the technology stack, make pragmatic technical decisions in ambiguous and emerging territory, and consistently ship high-quality, production-ready systems that our users rely on every day.

Responsibilities:

  • Design, build, and own core components of the agent platform, from the orchestration layer to the tool integrations connecting it to internal systems.
  • Build and evolve the capabilities layer: APIs, data access patterns, and service integrations for agents to execute operational workflows.
  • Architect the knowledge and memory infrastructure, allowing agents to retrieve the data and act across our systems.
  • Design and implement the trust and safety framework, including audit trails, human-in-the-loop controls, and guardrails for safe and auditable AI-driven operations.
  • Contribute to agent evaluation and testing infrastructure, defining how we measure accuracy, reliability, and regression across agent behaviors.
  • Partner directly with Operations to understand workflows, identify automation opportunities, and translate process knowledge into agent capabilities.
  • Mentor other engineers on the team as it grows.

About the candidate

  • You are comfortable in a fast-paced, early-stage environment. You demonstrate a "scrappy" and resourceful approach, proactively identifying solutions and unblocking yourself without needing a fully defined path.
  • You are pragmatic and balance quality with speed. You understand when to optimize for long-term durability and when to iterate quickly. You prioritize pragmatism over being overly precious about code, but never compromise on quality in a way that creates future issues.
  • You are product-minded. You look beyond the immediate task, seeking to understand the "why" behind the build and questioning whether it's the right product solution. You are comfortable contributing product thinking alongside engineering work.
  • You demonstrate a strong ownership mindset. You are proactive, identify gaps, and drive initiatives to completion without waiting for explicit instructions. When encountering issues or ambiguity, you address them directly.
  • You possess strong backend engineering fundamentals. You can confidently design, build, and operate production systems.
  • You are curious and eager to develop expertise in AI and LLMs. While deep research is not required, you are motivated to build practical, real-world products using these tools, specifically focusing on agent systems.
Qualifications
  • 5+ years of backend engineering experience building and operating production systems
  • Hands-on experience with LLMs and AI agents (orchestration, RAG, tool/function calling, or similar)
  • Strong API design and system integration skills
  • Product-minded: questions requirements and contributes to product decisions, not just execution
  • Proven ownership of complex projects in ambiguous, early-stage environments
Technologies Used
  • Golang, Ruby on Rails, Javascript, Java, C#, Python, VueJS, MySQL, Kafka, AWS, Git, Memcache, Redis, ElasticSearch, Docker, Terraform, Kubernetes, CircleCI, DataDog

The base wage range for this position based in our Toronto office is targeted at $167,500.00 to $235,000.00 CAD per year.

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