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Performance engineer Jobs in St. Catharines, ON

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Performance engineer • st catharines on

Last updated: 21 hours ago

Remote Ruby Engineer - AI Trainer

SuperAnnotateThorold, Ontario, CA
Remote
Full-time

As an hourly paid, fully remote Ruby Engineer for AI Data Training, you will review AI-generated Ruby and Rails code or generate your own solutions, evaluate the reasoning quality and step-by-step ...Show more

Assistant Meat Manager (Contract)

Farm Boy Inc.St. Catharines, Ontario, Canada
Full-time +1

Be part of what makes us different.In this 8 month contract position, you’ll work alongside the Department Manager to help deliver standout service and operational excellence that reflect Farm Boy’...Show more

Remote Physicist - AI Trainer

SuperAnnotateSt. Catharines, Ontario, CA
Remote
Full-time

We’re seeking physicists to join our AI training project.In this role, you will review AI-generated responses, evaluate the reasoning quality and step-by-step problem-solving, and provide expert fe...Show more

Parts Advisor (Performance Toyota)

Performance Auto GroupSt. Catharines, Ontario
Full-time

Assisting customers with parts inquiries, in person, on the phone and electronically.Placing orders in a timely fashion.Maintaining proper inventory levels.Inspect damaged parts brought in by custo...Show more

Interim Lead

SephoraSaint Catharines, Canada
Full-time +2

Glendale Ave Space 77 & 78, Saint Catharines, ON L2T 2K9, Canada (CA).This position is for an existing, open vacancy.You'll be a key driver of store success- leading by example to inspire your team...Show more

Senior Remote Education & Leadership Opportunity

3 Years on a RockSt. Catharines, Ontario, Canada
Remote
Full-time

Senior Remote Education & Leadership Opportunity | Flexible Work Structure After years supporting students, leading classrooms, developing curriculum, or guiding teams, many experienced education p...Show more

Assistant Manager (Part-time)

Landmark CinemasSt. Catharines, ON
Part-time

A subsidiary of Kinepolis Group NV, Belgium, Landmark is Canada’s second largest motion picture, theatre exhibition company.From a single screen in 1965, today Landmark Cinemas welcomes Movie Lover...Show more

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Sr Product Support Engineer (Manufacturing)

TreowGroup RecruitmentNiagara, ON, Canada
Full-time +1

Niagara-based manufacturing client, is seeking a.Senior Product Support Engineer.Our Client’s commitment to Customer Service is what sets them apart.The team is committed to doing what's right for ...Show more

Remote Customer Service Associate - $21.50 / hour

Tim's FinancialThorold, Ontario
Remote
Full-time

Our Customer Experience team is a group of top performers who work in a highly collaborative setting to ensure advancement of our systems and delivery of the highest quality experience.Think of it ...Show more

Senior Inside Sales Account Representative

Randstad CanadaSaint Catharines, Ontario, CA
Full-time +1
Quick Apply

Calling all Inside Sales professionals in St.We are working with a global professional services company geared towards supporting small and medium size businesses with digital technology and operat...Show more

Franchisee in Training - Southwestern Ontario (Guelph-London-Niagara)

Giant TigerSt. Catharines , Ontario, Canada
Remote
Full-time

At Giant Tiger, our mission is simple: help Canadians save more every day.We’re a Canadian institution rooted in our communities and built on 60+ years of success.Our store teams are the heart of o...Show more

First Class Power Engineer

OxyThorold, Ontario, Canada
Full-time

First Class Power Engineer-00028898.Provides direct supervision to the Shift Operating Engineers and prioritize maintenance activities in the Utilities area.In accordance with the Operating Enginee...Show more

Community Sports Performance Coach

Brock UniversitySt. Catharines, Main Campus
Part-time +1

Brock University is located on the traditional territory of the Haudenosaunee and Anishinaabe peoples, many of whom continue to live and work here today.This territory is covered by the Upper Canad...Show more

Sales Associate (Bell)

BellSt. Catharines, ON, CA
Full-time

We are looking for enthusiastic, outgoing people to join our retail sales team! We welcome individuals with previous sales and/or management experience, who understand the importance of customer se...Show more

Technical Sales Engineer

St-AmourSouth Western Ontario
Permanent

This is a hybrid technical-commercial position combining:.Business development in Mining, Steel, Cement, Power & Heavy Industry.Management and expansion of existing distributors.Technical troublesh...Show more

Mechanical Engineer - Hydraulics & Lubrication Systems (Heavy Industrial)

Westridge HRSt. Catharines, Ontario, Canada
Full-time +1

MECHANICAL ENGINEER | HYDRAULICS & LUBRICATION SYSTEMS (HEAVY INDUSTRIAL).Catharines, ON (Niagara Region).For engineers who’d rather be on the plant floor than behind a desk—this is where your work...Show more

Remote Financial Analyst – AI Model Training - AI Trainer

SuperAnnotateThorold, Ontario, CA
Remote
Full-time

This is a unique opportunity to contribute directly to how advanced AI systems understand, evaluate, and explain financial concepts.We’re looking for finance professionals who bring deep experience...Show more

Remote Sales Representative - High earnings potential 140k+

RogersThorold, Ontario
Remote
Full-time

Experience & Qualifications:.A minimum of 2 years of verifiable sales experience is required.Please note that general retail roles (e.Formal training in a recognized sales methodology (e.MEDDICC, S...Show more

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Remote Ruby Engineer - AI Trainer

Remote Ruby Engineer - AI Trainer

SuperAnnotateThorold, Ontario, CA
30+ days ago
Job type
  • Full-time
  • Remote
Job description

As an hourly paid, fully remote Ruby Engineer for AI Data Training, you will review AI-generated Ruby and Rails code or generate your own solutions, evaluate the reasoning quality and step-by-step problem-solving, and provide expert feedback that helps models produce answers that are accurate, logical, and clearly explained. You will assess solutions for readability, maintainability, and correctness; identify errors in MVC structure, domain modeling, or control flow; fact-check information; write high-quality explanations and model solutions that demonstrate idiomatic Ruby patterns; and rate and compare multiple AI responses based on correctness and reasoning quality.

This role is with SME Careers, a fast-growing AI Data Services company and subsidiary of SuperAnnotate that provides AI training data for many of the world’s largest AI companies and foundation model labs, and your work will directly help improve the world’s premier AI models while giving you the flexibility of impactful, detail-oriented remote contract work.

Key Responsibilities :

  • Develop AI Training Content : Create detailed prompts in various topics and responses to guide AI learning, ensuring the models reflect a comprehensive understanding of diverse subjects.
  • Optimize AI Performance : Evaluate and rank AI responses to enhance the model's accuracy, fluency, and contextual relevance.
  • Ensure Model Integrity : Test AI models for potential inaccuracies or biases, validating their reliability across use cases.

Your Profile :

  • 1–2+ years of professional Ruby programming experience in production environments.
  • Strong understanding of Ruby on Rails, MVC architecture, and idiomatic Ruby patterns for structuring application code.
  • Hands-on software engineering experience building and maintaining Ruby or Rails applications, with exposure to real-world production constraints.
  • Ability to evaluate readability, maintainability, and logical correctness in Ruby and Rails code, including model, controller, and service-layer design.
  • Significant experience using LLMs or AI coding assistants while programming, combined with a disciplined approach to validating and reviewing their output.
  • Excellent English writing skills, capable of producing clear, structured, and pedagogical technical explanations and code reviews.
  • Minimum Bachelor’s degree in Computer Science or a closely related technical field.
  • Previous experience with AI data training, large-scale code review, or evaluation of AI-generated technical content is strongly preferred; Minimum C1 English proficiency and an extremely detail-oriented working style are required.
  • Highly preferred : experience with frameworks and tools such as Ruby on Rails, Sinatra, and RSpec in real projects.
  • Preferred : merged PRs in Ruby open-source projects, experience with metaprogramming or test-heavy systems, and competitive programming exposure.