Backend Javascript Engineer Jobs in Markham, Canada

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Remote JavaScript Engineer AI Trainer

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 ...

UI/UX Designer

Our client in Markham is recruiting for a UX/UI Designer with front-end development experience for a 6-month contract. This is a 6 month initial contract opportunity; they are currently located in Downtown Markham but will be moving to North York (near HWY 401/404) in the Fall 2026. The UX/UI Designer ...

Front End Developer, Pharma/Medical Device

At Astellas, we strive to become a cutting-edge, value-driven life science innovator. This means working at the forefront of healthcare change to turn innovative science into VALUE for patients. What sets us apart is our focus on patients, our pioneering innovation, our collaborative culture, a ...

Front End Developer, Pharma/Medical Device

**About Astellas** Astellas is a global life sciences company committed to turning innovative science into VALUE for patients. We provide transformative therapies in disease areas that include oncology, ophthalmology, urology, immunology and women's health. Through our research and development programs, ...

Mobile Application Developer

Mobile Application Developer page is loaded## Mobile Application Developerremote type: Hybridlocations: 0001 – Markham Officetime type: Full timeposted on: Posted Todayjob requisition id: R25211Hybrid: Markham, Ontario**Job Description:****Job Summary**We’re seeking a talented Mobile Application Develo ...

AI Powered Full Stack Engineer for Integrations & Apps

A leading engineering consultancy in Guelph is seeking a Full Stack Engineer to develop and integrate solutions that support AI-powered applications. The role involves creating user-facing and backend components, ensuring seamless performance, and maintaining secure deployment within the company's technology env ...

AI Powered Full Stack Engineer for Integrations & Apps

A leading engineering consultancy in Guelph is seeking a Full Stack Engineer to develop and integrate solutions that support AI-powered applications. The role involves creating user-facing and backend components, ensuring seamless performance, and maintaining secure deployment within the company's technology env ...

AI Powered Full Stack Engineer for Integrations & Apps

A leading engineering consultancy in Guelph is seeking a Full Stack Engineer to develop and integrate solutions that support AI-powered applications. The role involves creating user-facing and backend components, ensuring seamless performance, and maintaining secure deployment within the company's technology env ...

Sr Front End Developer

Develop, enhance, and maintain front-end features using React and modern JavaScript/TypeScript. Implement and support micro?frontend architecture, including module federation for distributed UI development. Collaborate with architects and engineering teams on complex f ...

Front End Developer, Pharma/Medical Device

At Astellas, we strive to become a cutting-edge, value-driven life science innovator. This means working at the forefront of healthcare change to turn innovative science into VALUE for patients. What sets us apart is our foc ...

Front End Developer, Pharma/Medical Device Urgently Hiring!

At Astellas, we strive to become a cutting-edge, value-driven life science innovator. This means working at the forefront of healthcare change to turn innovative science into VALUE for patients. What sets us apart is our foc ...

Front End Developer, Pharma/Medical Device Now Hiring!

At Astellas, we strive to become a cutting-edge, value-driven life science innovator. This means working at the forefront of healthcare change to turn innovative science into VALUE for patients. What sets us apart is our foc ...

Guidewire Developer PolicyCenter

Overview Guidewire Developer; Minimum 5+ years’ experience in configuration/integration and Guidewire implementations in Policy Center. Exposure working in GW cloud implementations. Able to configure/integrate the applications using XML and GOSU. Insurance knowledge. Requirements / Qualifi ...

Guidewire Developer PolicyCenter

Overview Guidewire Developer; Minimum 5+ years’ experience in configuration/integration and Guidewire implementations in Policy Center. Exposure working in GW cloud implementations. Able to configure/integrate the applications using XML and GOSU. Insurance knowledge. Requirements / Qualifi ...

Remote JavaScript Tutor Flexible Hours, Up to $40/hr

An innovative tutoring platform is seeking an online JavaScript tutor to help students master essential programming concepts. With the ability to set your own hours, you will provide personalized instruction, leveraging advanced technology to create engaging learning experiences. The ideal candidate has a strong ...

Full Stack Engineer

Overview ITVaughan,OntarioMarkham,OntarioKitchener,OntarioGuelph,OntarioSalary: CAD - Annually The Full Stack Engineer is responsible for front-end development and back-end interconnection of solutions that support AI-powered applications and integrations across GEI. This role buil ...

Full Stack Engineer

Overview ITVaughan,OntarioMarkham,OntarioKitchener,OntarioGuelph,OntarioSalary: CAD - Annually The Full Stack Engineer is responsible for front-end development and back-end interconnection of solutions that support AI-powered applications and integrations across GEI. This role buil ...

Full Stack Engineer

Overview ITVaughan,OntarioMarkham,OntarioKitchener,OntarioGuelph,OntarioSalary: CAD - Annually The Full Stack Engineer is responsible for front-end development and back-end interconnection of solutions that support AI-powered applications and integrations across GEI. This role buil ...

Senior AI UI Engineer – Cross Platform Visualization Tools

A leading technology company in York Region, Markham, is seeking an AI and DSP Applications Senior UI Software Engineer. This role involves developing cross-platform GUI tools for Qualcomm Snapdragon processors, focusing on machine learning applications. Candidates should have 3+ years of experience in productio ...

Automation Engineer – AI‑Driven Testing (Hybrid)

A technology company specializing in Lawful and Location Intelligence is looking for a Software Engineer in Markham, Ontario. As part of the team, you will design, build, and maintain automated testing systems, collaborating closely with engineering to enhance product reliability. The successful candidate will h ...

Automation Engineer – AI‑Driven Testing (Hybrid)

A technology company specializing in Lawful and Location Intelligence is looking for a Software Engineer in Markham, Ontario. As part of the team, you will design, build, and maintain automated testing systems, collaborating closely with engineering to enhance product reliability. The successful candidate will h ...

Remote Go Engineer AI Trainer

As an hourly paid, fully remote Go Engineer for AI Data Training, you will review AI-generated Go code and explanations or generate your own, 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 expl ...

FullStack Engineer

ABOUT US TribalScale is a global digital innovation firm that helps enterprises adapt and thrive in the digital era. Through Agile practices we build best-in-class digital products, transform digital products, and we elevate renowned startups. We are a hybrid company headqu ...

Software Consulting Engineer – T&D Configuration Systems & Software Solutions

**Job Description Summary**We are seeking a highly experienced and innovation-driven Software Consulting Engineer to lead the architecture, design, and development of advanced software platforms and configuration tools for Transmission & Distribution (T&D) systems. This strategic leadership role dri ...

Senior Software Engineer: End to End Systems, AI Driven

A dental technology company in York Region is seeking a Senior Engineer to take ownership of entire systems, from backend to frontend. The ideal candidate will have extensive experience with TypeScript, Node.js, and React, able to analyze impacts before making decisions. You'll work autonomously to assess tradeo ...

Sr. Data Engineer

Join to apply for the Sr. Data Engineer role at Xplore Inc. Xplore Inc. is Canada’s fibre, 5G and satellite broadband company for rural living. Xplore is committed to the relentless pursuit of an improved broadband experience for all Canadians. Xplore is building a world-clas ...

Remote Kotlin Engineer AI Trainer

As a remote, hourly paid Kotlin Engineer, you will review AI-generated responses and generate high-quality Kotlin-focused content, evaluating the reasoning quality and step-by-step problem-solving behind each solution. You will assess solutions for accuracy, clarity, and adherence to the prompt; identify errors ...

Technical Lead

This role owns the technical performance, stability, and evolution of a high-revenue Magento B2B platform. The Technical Lead is hands-on, deeply technical, and accountable for ensuring the platform is secure, scalable, and built to support business growth.You’ll sit at the intersection of technolo ...

iOS and Android Engineer

Get AI-powered advice on this job and more exclusive features. This range is provided by Lorex Technology. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range CA$80,000.00/yr - CA$90,000.00/yr <p ...

Remote Rust Engineer AI Trainer

As an hourly paid, fully remote Rust Engineer for AI Data Training, you will review AI-generated Rust code and explanations or generate your own, 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 ...

Staff Engineer for AI Automation and Engineering Analytics

Lead the charge in building AI-enhanced engineering platforms as a Staff AI Engineer. Shape intelligent automation systems that revolutionize how complex engineering tasks are executed. In this role, you will design and develop robust engineering solutions that serve thousands of users across global ...

Java AWS Tech Lead

Get AI-powered advice on this job and more exclusive features. Direct message the job poster from Viva Tech Solutions Qualifications 8+ years of experience in Java development, with a strong background in enterprise scale systems. Hands-on expertise with Spring Boot, Sp ...

Full Stack Engineer (Next JS)

Direct message the job poster from Enercare Inc. Lead Architect & AI | AI Engg. | AI Agents | LLMs | Reverse Engg. Company Description Enercare Inc. is one of Canada’s largest providers of home and commercial services, specializing in heating, cooling, plumbing, elec ...

Remote TypeScript Engineer AI Trainer

As a TypeScript Engineer, you will work remotely on an hourly paid basis reviewing AI-generated TypeScript code snippets, design proposals, and technical explanations, as well as generating your own high-quality content and reference solutions. You will evaluate step-by-step reasoning and problem-solving, checki ...

Staff AI Engineer Foundational AI & Intelligent Engineering Systems

WHAT YOU DO AT AMD CHANGES EVERYTHINGAt AMD, our mission is to build great products that accelerate next-generation computing experiences—from AI and data centers, to PCs, gaming and embedded systems. Grounded in a culture of innovation and collaboration, we believe real progress comes from bold ...

Staff AI Engineer Foundational AI & Intelligent Engineering Systems

WHAT YOU DO AT AMD CHANGES EVERYTHINGAt AMD, our mission is to build great products that accelerate next-generation computing experiences—from AI and data centers, to PCs, gaming and embedded systems. Grounded in a culture of innovation and collaboration, we believe real progress comes from bold ...

Remote Senior Java Engineer AI Trainer

As a Senior Java Engineer, you will work remotely on an hourly paid basis to review AI-generated Java code, architectural solutions, and technical explanations, as well as generate high-quality reference implementations and reasoning steps. You will assess solutions for accuracy, clarity, and adherence to the pr ...

Remote Senior Python Engineer AI Trainer

As a Senior Python Engineer, you will work remotely on an hourly paid basis to review AI-generated Python solutions and technical explanations, as well as generate high-quality reference content that demonstrates strong software engineering practices. You will assess solutions for correctness, code quality, perf ...

Junior AI Software Engineer

Junior AI Software Engineer page is loaded## Junior AI Software Engineerlocations: Remote - Canadatime type: Full timeposted on: Posted 2 Days Agojob requisition id: R50805## ## Job Description:# **Junior AI Software Engineer****Company**: CORA Group (a Constellation Software company)**Location**: 8133 W ...

Data Engineer

Join to apply for the Data Engineer role at Integrity Asia . Get AI-powered advice on this job and more exclusive features. Are you a passionate data engineer ready to build the infrastructure that powers our insights and decisions? As a Data Engineer < ...

Data Engineer

Join to apply for the Data Engineer role at Integrity Asia . Get AI-powered advice on this job and more exclusive features. Are you a passionate data engineer ready to build the infrastructure that powers our insights and decisions? As a Data Engineer < ...

Staff Engineer (Node/React)

Our client is seeking a contract based Staff Engineer to work on their modernization program. The ideal candidate will be a hands‑on leader who guides architecture, mentors developers, and drives technical decisions across critical Enercare platforms. They will work deeply with TypeScript, Node.js, ...

Software Engineer

Software Engineer Location: Markham, Ontario, Canada (Hybrid) Candidates must have legal authorization to work in Canada at the time of application. SS8 is not able to provide visa sponsorship for this role. Company Overview As a leader in Lawful and Location Intelligenc ...

Software Engineer

Software Engineer Location: Markham, Ontario, Canada (Hybrid) Candidates must have legal authorization to work in Canada at the time of application. SS8 is not able to provide visa sponsorship for this role. Company Overview As a leader in Lawful and Loca ...

Lead Software Development Engineer in Test

Lead Software Development Engineer in Test page is loaded## Lead Software Development Engineer in Testremote type: Hybridlocations: 0001 – Markham Officetime type: Full timeposted on: Posted Yesterdayjob requisition id: R24977Hybrid: Markham, Ontario**Job Description:****Job Summary**We are seeking a h ...

Staff AI Engineer Foundational AI & Intelligent Engineering Systems

WHAT YOU DO AT AMD CHANGES EVERYTHING At AMD, our mission is to build great products that accelerate next-generation computing experiences—from AI and data centers, to PCs, gaming and embedded systems. Grounded in a culture of innovation and collaboration, we believe real progress comes from ...

Firmware Engineer, Sr. Engineer 15393

You Are: A highly motivated and innovative firmware engineer with a passion for developing cutting-edge technology. You thrive in a collaborative environment, working alongside a team of highly experienced engineers. With your expertise in firmware development for embedded processors, you are ...

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