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Javascript developer Jobs in Burlington, ON

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Javascript developer • burlington on

Last updated: 4 hours ago
Remote JavaScript Engineer - AI Trainer

Remote JavaScript Engineer - AI Trainer

SuperAnnotateHamilton, 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: 30+ days ago
Staff Software Developer

Staff Software Developer

Thermo Fisher ScientificBurlington, Ontario, Canada
Full-time
Laboratory Setting Office Some degree of PPE (Personal Protective Equipment) required (safety glasses gowning gloves lab coat ear plugs etc. As part of the Thermo Fisher Scientific team youll discov...Show moreLast updated: 30+ days ago
Lead Developer / Architect (Full Stack)

Lead Developer / Architect (Full Stack)

PHD SolutionsBurlington, ON, Canada
Full-time +1
Lead Developer / Architect (Full Stack) • Burlington, ON • Full-time, permanent role (Monday – Friday, with flex hours), Remote working is a possibility. Salary : $110,000 - $135,000 commensura...Show moreLast updated: 30+ days ago
Software Engineer - C# -.NET Core & JavaScript

Software Engineer - C# -.NET Core & JavaScript

MaaforHamilton, ON, CA
Full-time
The Software Engineer is experienced in designing and building APIs and external system interfaces for integration.This position will ensure each solution is bespoke design and will require a stron...Show moreLast updated: 30+ days ago
Senior Developer

Senior Developer

Lorven TechnologiesCanada, Ontario, Canada
Full-time
Location : Ontario, Canada (Onsite).IT, with a broad exposure to different platforms and technologies.SQL Coding and querying skills. UNIX scripting, FTP and basic network principles.Experience in pr...Show moreLast updated: 30+ days ago
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Dynamics 365 Solutions Developer (CRM & Power Platform)

Dynamics 365 Solutions Developer (CRM & Power Platform)

BDOOakville
Full-time
Putting people first, every day.BDO is a firm built on a foundation of positive relationships with our people and our clients. Each day, our professionals provide exceptional service, helping client...Show moreLast updated: 4 hours ago
AEM Developer

AEM Developer

DeloitteBurlington, ON
Permanent +1
Montreal, QC; Brossard, QC; Burlington, ON; Calgary, AB; Edmonton, AB; Fredericton, NB; Halifax, NS; Kitchener, ON; Laval, QC. Moncton, NB; Ottawa, ON; Quebec City, QC; Regina, SK; Saint John, NB; ...Show moreLast updated: 30+ days ago
Industrial Windows Application Developer

Industrial Windows Application Developer

CB CanadaBurlington, Ontario, Canada
Full-time
Industrial Windows Application Developer.PROCOM KW is currently searching for an Industrial Windows Application Developer for our client in the software industry. Industrial Windows Application Deve...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
Full-Stack Developer – Java E-Commerce Platform (AWS Linux)

Full-Stack Developer – Java E-Commerce Platform (AWS Linux)

Yoush ConsultingBurlington, Ontario, Canada
Full-time
Our client a national leader in imaging and photo retail solutions needs a Full-Stack developer to support their core e-commerce platform. Java-based back-end development.This position is suitable f...Show moreLast updated: 30+ days ago
Business Systems Developer

Business Systems Developer

Grantek Systems IntegrationBurlington, Ontario, Canada
Full-time
IT Platform Engineering Data & Analytics and Business Process teams to deliver secure scalable and efficient internal digital solutions. Develop enhance and maintain internal business applicatio...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
software developer

software developer

PJ Galaxy IT Solutions IncHamilton, ON, CA
Permanent
Write, modify, integrate and test software code.Communicate technical problems, processes and solutions.Prepare reports, manuals and other documentation on the status, operation and maintenance of ...Show moreLast updated: 30+ days ago
Junior Software Developer - Observability

Junior Software Developer - Observability

CanonicalHamilton, ON, CA
Full-time
Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise in...Show moreLast updated: 8 days ago
Employment Counselor & Job Developer

Employment Counselor & Job Developer

YWCA HamiltonHamilton, ON, CA
Full-time
Hamilton’s original social innovators and works from a feminist, anti-racist, and anti-oppressive framework.We are committed to providing meaningful and accessible services that create opportunitie...Show moreLast updated: 5 days ago
Full Stack Engineer : Build & Scale Web Apps

Full Stack Engineer : Build & Scale Web Apps

TreowGroup RecruitmentHamilton, ON, CA
Full-time
A recruitment agency is seeking a Full Stack Developer for a Hamilton-based client.This role involves maintaining and enhancing systems, working with APIs, and ensuring operational efficiency acros...Show moreLast updated: 30+ 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
Technology Developer

Technology Developer

Dynamic Connections Inc.Burlington, Halton Region, CA
Permanent
Dynamic Connections is a leading North American third‑party logistics company that provides integrated solutions for our customers. Dynamic Connection creates, sells and executes intelligent logisti...Show moreLast updated: 26 days ago
Technology Developer

Technology Developer

Dynamic ConnectionsBurlington, Ontario, Canada
Full-time +1
Dynamic Connections is a leading North American third-party logistics company that provides integrated solutions for our customers. Dynamic Connection creates sells and executes intelligent logistic...Show moreLast updated: 30+ days ago
People also ask
Remote JavaScript Engineer - AI Trainer

Remote JavaScript Engineer - AI Trainer

SuperAnnotateHamilton, Ontario, CA
30+ 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.