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Javascript developer Jobs in Thorold, ON

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Javascript developer • thorold on

Last updated: 15 hours ago
Remote JavaScript Engineer - AI Trainer

Remote JavaScript Engineer - AI Trainer

SuperAnnotateNiagara Falls, Ontario, CA
Remote
Full-time
As an hourly paid, fully remote JavaScript Engineer for AI Data Training, you will review complex AI-generated code and explanations or generate new ones, evaluate the reasoning quality and step-by...Show moreLast updated: 18 days ago
Coding Instructor

Coding Instructor

CodeNinjas Harrisburg-MechanicsburgSt. Catharines, Niagara Region, CA
Part-time
Code Ninjas is the nation’s fastest-growing kids coding franchise.In our center, kids ages 7-14 learn to code in a fun, non-intimidating way – by playing and building video games they love.Kids hav...Show moreLast updated: 30+ days ago
Senior Product Manager (GTM Strategy)

Senior Product Manager (GTM Strategy)

mParticleRemote, Ontario Canada
Remote
Full-time
The Successful candidate will : .Product GTM : Spearhead product launches with meticulously planned go-to-market strategies, ensuring seamless orchestration and measurable impact.Drive Product Adoptio...Show moreLast updated: 30+ days ago
Oracle OTM Developer / Designer

Oracle OTM Developer / Designer

Juventus ConsultingOntario
Full-time
This contract opportunity is for 5 months, the end client is in BC, with locations in Memphis, TN.Per Diem expenses range from 60 to 100 USD, depending on travel location.Some remote work is possib...Show moreLast updated: 30+ days ago
Online Survey Researcher (Work-at-Home)

Online Survey Researcher (Work-at-Home)

FocusGroupPanelNiagara Falls, Ontario, Canada
Remote
Part-time
Work From Home, Entry Level Data Entry Clerk As A Research Participant.We are looking for people who want to work remotely from home. You'll need an Internet connection and a mobile device or comput...Show moreLast updated: 2 days ago
Intermediate Software Developer

Intermediate Software Developer

PanasonicNiagara-on-the-Lake, ON, CA
Full-time
Panasonic Canada over 100 years, Panasonic has been committed to enhancing the well-being of people, communities, and society. Our technologies and solutions have been developed with one aim in min...Show moreLast updated: 30+ days ago
Senior Developer (Data)

Senior Developer (Data)

Farm Credit CanadaVarious FCC office s in Ontario may be considered
Full-time
Salary Range (plus eligible to receive a performance based incentive, applicable to position) : .Experienced data developer needed. Using your experience in Agile Scrum methodology and AWS data pipel...Show moreLast updated: 30+ days ago
iOS Developer Intern / Co-op (Remote)

iOS Developer Intern / Co-op (Remote)

TorontoJobsREMOTE, ON
Remote
Part-time +1
OS Developer Intern / Co-op (Remote).Guhuza is seeking an iOS Developer to join our remote team and contribute to the development of our iOS app. As an iOS Developer at Guhuza, you will play a cruci...Show moreLast updated: 30+ days ago
Sr. SharePoint Developer

Sr. SharePoint Developer

Medavie Blue CrossON, CA
Full-time +1
What makes us a different kind of employer?.As a national health solutions partner, Medavie is committed to improving the wellbeing of Canadians — and in our digital-first culture, technology is ke...Show moreLast updated: 30+ days ago
  • New!
Front End Developer / Hybrid Remote #8906

Front End Developer / Hybrid Remote #8906

Employment Help CentreNiagara Falls, Niagara Region, CA
Remote
Full-time
MyBREB) was created to help streamline thesearch for real estate listings, housing supplies, and related services.MyBREB is a brand NEW powerful, revolutionary ONE-STOP community-based resource and...Show moreLast updated: 15 hours ago
iOS Engineer III, Feeds / Business Experience

iOS Engineer III, Feeds / Business Experience

redditRemote, Ontario, Canada
Remote
Full-time
Reddit is a community of communities.It’s built on shared interests, passion, and trust and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote...Show moreLast updated: 30+ days ago
Web Developer

Web Developer

CB CanadaNiagara Falls, Ontario, Canada
Permanent
Our client designs, markets & sells highest performance consumer electronics that are smart, simple and stylish.From high fidelity turntables to wireless video connectivity systems, they create inn...Show moreLast updated: 30+ days ago
Course Developer - Managerial Decision Making (BUSI 401)

Course Developer - Managerial Decision Making (BUSI 401)

University of Niagara Falls CanadaNiagara Falls, Niagara Region, CA
Full-time
Direct message the job poster from University of Niagara Falls Canada.Talent Acquisition Advisor @ UNF │ Education, Tech & Startups. Course Developer - Managerial Decision Making (BUSI 401).Universi...Show moreLast updated: 30+ days ago
Software Developer

Software Developer

MeridianSt Catharines, ON L2SW3, CAN
Full-time
At Meridian our aspiration is to integrate our purpose into everything we do for people, the planet, and communities.We believe that our greatest opportunity is to create opportunity and meet peopl...Show moreLast updated: 26 days ago
Web Content Co-ordinator

Web Content Co-ordinator

22nd Century Technologies Inc.Thorold, ON
Full-time
Web writing and editing as the primary focus.Formatting existing project pages for consistency and quality.Possible assistance with tasks related to the new website. Support during content migration...Show moreLast updated: 30+ days ago
  • Promoted
Building Manager Live-IN

Building Manager Live-IN

Chad Management GroupWelland, ON, Canada
Full-time
Our Client is a very prestigious Property Developer in the Toronto area.We are Looking for a Live in Building Manager Couple to Join this team. Familiar with all aspects of building operation.Strong...Show moreLast updated: 30+ days ago
  • Promoted
Site Coordinator - Niagara Falls

Site Coordinator - Niagara Falls

AvertonNiagara Falls, ON, Canada
Full-time
Where design meets opportunity, and careers are built to last.Averton is an experienced and award-winning homebuilder, community developer and construction management company.We wear a lot of diffe...Show moreLast updated: 1 day ago
Senior.NET Web Developer — Hybrid Banking Tech

Senior.NET Web Developer — Hybrid Banking Tech

Meridian Credit UnionSt. Catharines, Niagara Region, CA
Full-time
A leading credit union is seeking a talented Software Developer to join their Online Banking Development team.In this role, you'll develop, integrate, and maintain applications for digital banking ...Show moreLast updated: 24 days ago
JPC -1461 - Senior Web Developer

JPC -1461 - Senior Web Developer

ITS GlobalOntario
Full-time
Our client is looking for a Senior Web Developer to join their team.Developing new user-facing features using React.Building reusable components and front-end libraries for future use.Translating d...Show moreLast updated: 30+ days ago
People also ask
Remote JavaScript Engineer - AI Trainer

Remote JavaScript Engineer - AI Trainer

SuperAnnotateNiagara Falls, Ontario, CA
18 days ago
Job type
  • Full-time
  • Remote
Job description

As an hourly paid, fully remote JavaScript Engineer for AI Data Training, you will review complex AI-generated code and explanations or generate new ones, 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 accuracy, clarity, and adherence to the prompt, identify errors in methodology or conceptual understanding, fact-check information, write high-quality explanations and model solutions that demonstrate correct methods, 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. 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 :

  • Minimum 2+ years of professional JavaScript experience in production environments.
  • Strong understanding of closures, async / await, prototype-based inheritance, and JavaScript event loop behavior, with deep proficiency in modern Vanilla JavaScript (ES6 / ES2015+).
  • Proven ability to evaluate correctness, readability, and performance of JavaScript code, including identifying subtle logic and edge-case issues.
  • Hands-on work experience in software engineering, preferably in roles involving code review, mentoring, or technical design discussions.
  • Significant experience using LLMs or AI coding assistants while programming, combined with a critical mindset for validating their output.
  • Excellent English writing skills, capable of producing clear, concise, and pedagogical technical explanations.
  • Strong proficiency with at least one major frontend framework (such as React, Angular, or Vue.js) or backend runtime (such as Node.js with Express or NestJS).
  • Minimum Bachelor’s degree in Computer Science or a closely related technical field.
  • Previous experience with AI data training, data annotation, or evaluation of AI-generated technical content is a strong plus; Minimum C1 English proficiency and a highly detail-oriented working style are required.
  • Preferred : contributions or merged PRs in JavaScript or TypeScript open-source projects, familiarity with bundlers and tooling (Webpack, Vite, Rollup), frontend–backend integration and Node.js runtime behavior, reviewing typed API layers, DTOs, or schema-driven designs, and experience evaluating frontend logic, async patterns, and state management.