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Front End Developer Front End Developer Jobs in Toronto, ON

Frontend Developer - Remote

Toronto, ON ยท Remote

$80 - $120/hr

Senior Software Engineer Job Type: Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating ...

We are looking for an experienced Senior Front-End Software Developer to help us craft scalable, accessible, and ultra-responsive web experiences. In this role, you will write clean, testable code to ...

Senior Developer 1 - Front End

Toronto, ON ยท On-site

CA$120K - CA$130K/yr

We are looking for an experienced Senior Front-End Software Developer to help us craft scalable, accessible, and ultra-responsive web experiences. In this role, you will write clean, testable code to ...

Senior Developer 1 - Front End

Toronto, ON ยท On-site +1

CA$120K - CA$130K/yr

We are looking for an experienced Senior Front-End Software Developer to help us craft scalable, accessible, and ultra-responsive web experiences. In this role, you will write clean, testable code to ...

Staff Software Developer, Front End

Toronto, ON ยท Hybrid

CA$164K - CA$222K/yr

We are seeking a Staff Software Developer, Front End with a strong passion for building successful web applications, services, and APIs that deliver big value to customers. You are comfortable in ...

Champion frontend engineering best practices, including performance optimization, testing, observability, and maintainable architecture. * Partner closely with product, data science, platform ...

Improve frontend performance, reliability, accessibility, testing strategy, and developer experience at a systems level. * Mentor and guide engineers across the team, raising the overall quality and ...

Showing results 21-40

Front End Developer Front End Developer information

Infographic showing various Front End Developer Front End Developer job openings in Toronto, ON as of August 2026, with employment types broken down into 1% As Needed, 76% Full Time, 17% Part Time, 1% Temporary, and 5% Contract. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution.

Frontend Developer - Remote

Toronto, ON โ€ข Remote

$80 - $120/hr

Full-time

Posted 15 days ago


Job description

Senior Software Engineer

Job Type: Contractor (~15 hours/week)
Location: Remote

Job Summary

We are seeking experienced Senior Software Engineers to support an AI training project by creating reinforcement learning environments that evaluate AI models on complex software engineering tasks using Model Context Protocol (MCP) tools.

You will design reproducible environments, deterministic verification, and reference solutions for tasks such as bug fixing, feature implementation, codebase refactoring, and performance optimization. No prior AI experience is required.

Key Responsibilities
  • Create reinforcement learning environments for software engineering tasks.
  • Design tasks involving bug fixing, feature development, refactoring, and performance optimization.
  • Build deterministic verification systems and golden reference solutions.
  • Evaluate AI agents' ability to reason through complex codebases and use MCP tools effectively.
  • Develop realistic, reproducible software engineering scenarios.
  • Ensure tasks accurately measure coding ability, problem-solving, and tool usage.
  • Document solutions and provide clear technical feedback.
Required Skills
  • Strong proficiency in Python 3, Java, Rust, C++, or TypeScript.
  • Strong understanding of algorithms and data structures.
  • Experience with bug fixing and debugging complex software issues.
  • Proven experience in feature implementation and codebase refactoring.
  • Strong knowledge of performance optimization and tuning.
  • Excellent written and verbal communication.
  • Strong attention to detail.
Preferred Qualifications
  • Experience working with large-scale or distributed codebases.
  • Familiarity with AI/ML systems is a plus but not required.
  • Experience with rigorous code reviews and software engineering best practices.
  • Experience working effectively in remote or cross-functional teams.
Hiring Process
  1. Submit an application and screening questions.
  2. Complete an AI interview (~30 minutes).
  3. Complete a technical assessment, if required.
  4. Hiring Manager review.
Compensation

Compensation is output-based, with payment provided per task that meets project specifications. Minimum weekly submission requirements may apply.

Availability

Selected experts should be prepared to begin their first tasks within 24–48 hours of completing onboarding.