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Performance engineer Jobs in St. Catharines, ON

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Performance engineer • st catharines on

Last updated: 8 days 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 Grocery Manager

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

Be part of what makes us different.You’ll work alongside the Department Manager to help deliver standout service and operational excellence that reflect Farm Boy’s commitment to the best fresh shop...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

Financial Service Representative

easyfinancialSt. Catharines, Ontario, Canada
Full-time

Join easyfinancial, the consumer lending driver behind goeasy’s rapid growth.We’ve earned prestigious accolades including being named one of.Canada’s Top Growing Companies.TIME Magazine’s 2025 list...Show more

Intermediate Pavement Engineer

GHDSt Catharines, ON, Canada
Full-time

Intermediate Pavement Engineer or EIT.In an ever-changing world, it requires creativity and innovation to stay ahead.We’re seeking the curious, those who are stimulated by fresh thinking and a desi...Show more

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

ScotiaMcLeod Assistant Branch Manager/Branch Administrator - St Catharines

ScotiabankSt. Catharines, ON, CA
Full-time

ScotiaMcLeod, a cornerstone of Scotia Wealth Management®, is a full-service wealth management firm with a proud history dating back to 1921.Known for service excellence, trusted advice, and a colla...Show more

Senior Inside Sales Account Representative

Net2SourceSt. Catherine, ON
Full-time

Join a Global Leader in Workforce Solutions – NetSource Inc.Recognized for % growth in the past three years, we operate in countries with a global team of ,+.Our mission? To bridge the talent gap w...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

Remote Support Representative - $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

Remote Inside Sales (140k+ per year)

RogersSt. Catharines, 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

Remote Biologist - AI Trainer

SuperAnnotateThorold, Ontario, CA
Remote
Full-time

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

Senior Network Engineer (Canada)

FoundeverRemote, Ontario, CA, L2R 5L3
Remote
Full-time

Senior Network Engineer (Canada).Senior Network Engineer (Canada).Foundever® is the next-generation services leader reinventing customer experience (CX).Built on diverse and proven industry experie...Show more

Service Advisor (Audi Niagara - Contract)

Performance Auto GroupSt. Catharines, Ontario
Full-time +1

Identifying, recommending and documenting service maintenance and repairs for customers.Greeting customers in a courteous, professional manner.Delivering personalized service that exemplifies our d...Show more

Senior Construction Project Manager

GHDSt Catharines, ON, Canada
Full-time

Help us build the future and we’ll help you build a rewarding and purposeful career!.Our global network is made up of architects, designers, planners, engineers, and environmental scientists, all w...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

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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.