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Ruby developer Jobs in Markham, ON

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Ruby developer • markham on

Last updated: 2 days ago
Ruby Engineer

Ruby Engineer

SuperAnnotateWillowdale, 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 moreLast updated: 2 days ago
Software Developer

Software Developer

CprvisionWhitchurch-Stouffville, ON, CA
Temporary
Job Summary : • •As a Software Developer with Portfolio+, you will play a key role in shaping and enhancing our financial software solutions, empowering customers to achieve their goals.Leveraging you...Show moreLast updated: 30+ days ago
Mainframe Developer

Mainframe Developer

Compunnel, Inc.Markham, York Region, CA
Full-time
We are seeking an experienced Mainframe Developer with a strong background in COBOL and Informatica, particularly within the insurance industry. The ideal candidate will be responsible for developin...Show moreLast updated: 30+ days ago
Software Developer

Software Developer

OpenTextRichmond Hill, York Region, CA
Full-time
OpenText - The Information Company.OpenText is a global leader in information management, where innovation, creativity, and collaboration are the key components of our corporate culture.As a member...Show moreLast updated: 30+ days ago
Senior Analytics Developer

Senior Analytics Developer

AvivaMarkham, York Region, CA
Full-time
Individually we are people, but together we are Aviva.Individually these are just words, but together they are our Values – Care, Commitment, Community, and Confidence. At Aviva Canada, we put peopl...Show moreLast updated: 30+ days ago
Clinical Trial Web Application Developer

Clinical Trial Web Application Developer

Everest Clinical ResearchMarkham, York Region, CA
Full-time
Clinical Trial Web Application Developer.Clinical Trial Web Application Developer.Clinical Trial Web Application Developer. Clinical Trial Web Application Developer.Everest Clinical Research (“Evere...Show moreLast updated: 30+ days ago
Software Developer

Software Developer

Portfolio+Whitchurch-Stouffville, ON, CA
Temporary
Software Developer (Temporary) – 3 Month Fixed Term Contract.Department : R&D | Reports to : Manager, Software Engineering | Location : Stouffville, ON (Hybrid) | Salary : $80,000 - $85,000.At Portfoli...Show moreLast updated: 24 days ago
C++ / Qt Developer

C++ / Qt Developer

Tenth Revolution GroupMarkham, York Region, CA
Full-time
Tenth Revolution Group provided pay range.This range is provided by Tenth Revolution Group.Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Compu...Show moreLast updated: 4 days ago
Senior Analytics Developer

Senior Analytics Developer

Aviva CanadaMarkham, York Region, CA
Full-time
Individually we are people, but together we are Aviva.Individually these are just words, but together they are our Values – Care, Commitment, Community, and Confidence. At Aviva Canada, we put peopl...Show moreLast updated: 30+ days ago
BI Developer

BI Developer

Pet ValuMarkham, York Region, CA
Full-time
BI Developer page is loaded## BI Developerremote type : Hybridlocations : 0001 – Markham Officetime type : Full timeposted on : Posted Todayjob requisition id : R24394Hybrid : Markham, Ontario •...Show moreLast updated: 30+ days ago
  • Promoted
Full Stack Developer

Full Stack Developer

Magna International, IncConcord, ON, Canada
Permanent
Bei Magna erwartet dich ein spannendes und dynamisches Arbeitsumfeld, in dem du dazu beitragen kannst, marktfhrende.Wir investieren in unser Personal und bieten ihm die Untersttzung und Ressourcen,...Show moreLast updated: 30+ days ago
Lead Graphics IP Validation & Systems Engineer

Lead Graphics IP Validation & Systems Engineer

ObjectWin TechnologyMarkham, York Region, CA
Full-time
A leading technology firm is seeking a Graphics System Silicon Validation Design Engineer to drive the planning and validation of AMD graphics IP. The ideal candidate will possess strong programming...Show moreLast updated: 21 days ago
BI Developer

BI Developer

CB CanadaMarkham, Ontario, Canada
Permanent
Business Intelligence (BI) Analyst.Robert Half is looking for a PowerBI Developer to join our client! The successful candidate will turn data into information, information into insight and insight ...Show moreLast updated: 30+ days ago
  • Promoted
FRONT-END DEVELOPER

FRONT-END DEVELOPER

Finlink GroupRichmond Hill, ON, Canada
Full-time
Bring ideas to life with code that feels as smooth as it looks.We’re searching for a talented Front-End Developer who’s passionate about building sleek, scalable, and intuitive web appl...Show moreLast updated: 30+ days ago
Senior Software Developer

Senior Software Developer

Randstad CanadaNorth York, Ontario, CA
Temporary
Quick Apply
Do You have 10+ years demonstrated knowledge and experience of IT systems development in multi-platform environments (web, desktop, mobile, mainframe, micro / mini systems, etc.Do You have demonstrat...Show moreLast updated: 30+ days ago
  • Promoted
Lead developer

Lead developer

Plan IT SearchMarkham, ON, Canada
Full-time
Ability to build and support strong internal relationships with crossfunctional departments.Excellent communication skills, both written and verbal. Strong PC skills are required (MS Office, SAP) an...Show moreLast updated: 30+ days ago
.NET Developer

.NET Developer

Onico SolutionsRichmond Hill, York Region, CA
Permanent
NET Developer is responsible for developing applications and data integration.NET Developer needs to understand and analyze business requirements, analyze its impacts and translate specifications i...Show moreLast updated: 30+ days ago
Frontend Developer

Frontend Developer

MekariMarkham, York Region, CA
Full-time
We are looking for an experienced Freelance Front-End Engineer to join our dynamic team.In this role, you will be responsible for building and maintaining the client-facing part of our web applicat...Show moreLast updated: 30+ days ago
Software Developer

Software Developer

VencoraWhitchurch-Stouffville, ON, CA
Temporary
As a Software Developer with Portfolio+, you will play a key role in shaping and enhancing our financial software solutions, empowering customers to achieve their goals. Leveraging your expertise in...Show moreLast updated: 23 days ago
People also ask
Ruby Engineer

Ruby Engineer

SuperAnnotateWillowdale, Ontario, CA
2 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.