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Full Stack Engineer Intern Jobs in Ontario (NOW HIRING)

Alquemy

Full Stack Engineer

Toronto, ON · On-site

Full Stack Engineer About the Role We are seeking an Full Stack Engineer to design, develop, deploy, and support AI-powered applications using modern large language model (LLM) technologies. You will ...

8090 Solutions

Shape the future of software at 8090 as a Full Stack Engineer, specializing in Python, Typescript, and web applications. Your role will focus on creating client-focused software solutions and ...

Canada Coaster

Full Stack Engineer

Dundas, ON

As Full Stack Engineer, you'll be reporting to the IT Manager, and be part of the IT team that is responsible for maintaining and extending current systems along with the development of new modules ...

Machina Labs

Full Stack Engineer

Chatsworth, ON

CA$130K - CA$150K/yr

Machina Labs is seeking a Full Stack Engineer to join our software team and help build the systems that power our robotic sheet metal forming platform. In this role, you'll bridge the gap between the ...

Mattermost

Staff Full Stack Engineer

Toronto, ON · On-site +1

CA$195K - CA$238K/yr

We are seeking a Staff Full Stack Engineer to set the technical direction for and scale Mattermost's core web platform for teams operating in defense and critical infrastructure sectors. You'll drive ...

New

StackandCo

You will have hands on commercial experience as a Full Stack engineer working with the following: \n \n \n * Core Java & Java EE \n * JavaScript \/ TypeScript \n * ReactJS OR VueJS \n * CSS4 & HTML5 ...

AutoTrader.ca

Take on the Full Stack Engineer role at AutoSync, located in Ontario, Canada. Contribute to revolutionary digital solutions while enhancing code quality and infrastructure resilience. This role ...

Finlink Group

Staff Full-Stack Engineer - .NET, React & AI Are you a highly experienced full-stack engineer who thrives on solving complex technical challenges and delivering production-ready solutions at speed?

Emerging Threats Pro

Full Stack Engineer

Toronto, ON · On-site

... full-stack Software Engineer III on our Satori AI Platform team, you will be building the interfaces and APIs that our Fortune 500 customers use to deploy, monitor, and control AI security agents ...

Bmo

Associate, Full Stack Engineer

Toronto, ON · On-site

CA$120K/yr

Technology About the Role We are seeking an exceptional Full Stack Engineer to join our Data Cognition Team at BMO Capital Markets. In this pivotal role, you will architect, develop, and implement ...

New

Chubb

Senior Full Stack Engineer

Toronto, ON · On-site

Senior Full-Stack Engineer, AI Platform The Opportunity Chubb's AI Platform team is building an enterprise AI platform that powers RAG-based search, document intelligence, and AI-assisted workflows ...

Finlink Group

Staff Full-Stack Engineer - .NET, React & AI Are you a highly experienced full-stack engineer who thrives on solving complex technical challenges and delivering production-ready solutions at speed?

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Showing results 1-20

All JobsFull Stack Engineer Intern JobsFull Stack Engineer Intern Jobs in Ontario

Full Stack Engineer Intern information

See Ontario salary details

$24K

$113.9K

$183.5K

How much do full stack engineer intern jobs pay per year?

As of Aug 28, 2026, the average yearly pay for full stack engineer intern in Ontario is $113,873.00, according to ZipRecruiter salary data. Most workers in this role earn between $76,000.00 and $150,000.00 per year, depending on experience, location, and employer.

What is a full stack engineer intern?

Full Stack Engineer Interns are students or recent graduates who assist in developing both the front-end and back-end components of web applications. They work under the guidance of experienced engineers to gain hands-on experience with programming languages, frameworks, and tools used throughout the software development lifecycle. Their responsibilities often include writing code, testing applications, fixing bugs, and collaborating with teams to deliver functional software. Through this internship, they develop practical skills and a deeper understanding of how web systems work end-to-end.

What are the key skills and qualifications needed to thrive as a full stack engineer intern?

To thrive as a Full Stack Engineer Intern, you need a solid understanding of programming languages like JavaScript, HTML, CSS, and at least one backend language, often supported by coursework or relevant project experience. Familiarity with frameworks such as React or Angular, backend systems like Node.js or Django, version control (Git), and basic database management is typically expected. Strong problem-solving skills, eagerness to learn, and effective communication help interns stand out in fast-paced development teams. These skills and qualities are essential for contributing to real-world projects, collaborating effectively, and accelerating professional growth in a technical environment.

What types of projects and technologies can I expect to work with as a full stack engineer intern?

As a Full Stack Engineer Intern, you can expect to work on a variety of projects ranging from building user interfaces with front-end frameworks like React or Angular to developing backend services using technologies such as Node.js, Python, or Java. Interns often assist with integrating APIs, database management, and testing features in both development and production environments. You'll likely collaborate closely with designers, product managers, and other developers, gaining exposure to the complete software development lifecycle. This hands-on experience is designed to help you build practical skills and contribute meaningful code to real applications.

What is the difference between Full Stack Engineer Intern vs Software Developer Intern?

AspectFull Stack Engineer InternSoftware Developer Intern
Required CredentialsTypically pursuing or recently completed a degree in Computer Science or related fieldTypically pursuing or recently completed a degree in Computer Science or related field
Work EnvironmentHands-on experience with both front-end and back-end development in a team settingFocus on coding, debugging, and developing software applications, often in a specific area
Employer & Industry UsageTech companies, startups, and organizations seeking versatile interns with full-stack skills

The Full Stack Engineer Intern role involves working across both front-end and back-end technologies, providing a broad development experience. In contrast, a Software Developer Intern may focus more narrowly on specific software components or applications. Both roles are valuable for gaining industry experience, but the Full Stack Engineer Intern position offers a more comprehensive view of the entire development process.

What are the most commonly searched types of Full Stack Engineer jobs in Ontario?

The most popular types of Full Stack Engineer jobs in Ontario are:

What are popular job titles related to Full Stack Engineer Intern jobs in Ontario?

For Full Stack Engineer Intern jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Full Stack Engineer Intern jobs in Ontario look for?

The top searched job categories for Full Stack Engineer Intern jobs in Ontario are:

What cities in Ontario are hiring for Full Stack Engineer Intern jobs?

Cities in Ontario with the most Full Stack Engineer Intern job openings:

Full Stack Engineer Intern jobs near you
Infographic showing various Full Stack Engineer Intern job openings in Ontario as of August 2026, with employment types broken down into 71% Full Time, and 29% Contract. Highlights an 100% In-person job distribution, with an average salary of $113,873 per year, or $54.7 per hour.

Full Stack Engineer

Alquemy

Toronto, ON • On-site

Full-time

Posted 29 days ago

Job description

Job Description Full Stack Engineer About the Role We are seeking an Full Stack Engineer to design, develop, deploy, and support AI-powered applications using modern large language model (LLM) technologies. You will work as part of a collaborative DevOps team, delivering production-ready solutions while contributing to automation, continuous improvement, and operational excellence. Responsibilities Design, develop, test, deploy, and support AI applications throughout the software development lifecycle.

Build LLM-based solutions, including AI agents, Retrieval-Augmented Generation (RAG), and multi-step workflows. Develop and integrate RESTful APIs and backend services. Collaborate with cross-functional teams to deliver business requirements using iterative development.

Support production systems, troubleshoot issues, and contribute to continuous improvement. Identify and address technical debt while delivering new functionality. Write automated unit tests and contribute to CI/CD and DevOps practices.

Participate in code reviews, knowledge sharing, and team collaboration. Required Qualifications: 3+ years of software engineering experience. Strong Python development skills.

Experience with LLM application development, including AI agents, RAG, prompt engineering, and tool/function calling. Experience with LangChain, LangGraph, or similar LLM orchestration frameworks. Strong SQL skills and experience designing RESTful APIs.

Experience with cloud-based LLM platforms (e.g., Azure OpenAI or equivalent). Familiarity with LLM observability tools such as LangFuse or LangSmith. Strong analytical and problem-solving skills

Experience writing unit tests and supporting production applications. Preferred Qualifications Experience with Parquet, DuckDB, or other analytical databases. Familiarity with LiteLLM or multi-LLM routing frameworks.

Working knowledge of Java and Unix/Linux environments. Experience with CI/CD and Agile/DevOps practices.

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