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Junior Full Stack Jobs in Ontario (NOW HIRING)

Private AI

Junior Full Stack Developer

Toronto, ON · On-site

What you'll do This is a full stack developer role with a front end leaning mandate. You will be part of the team helping Limina build a new product offering. This role is a great opportunity to ...

New

Private AI

Junior Full Stack Developer

Toronto, ON · On-site

What you'll do This is a full stack developer role with a front end leaning mandate. You will be part of the team helping Limina build a new product offering. This role is a great opportunity to ...

Magna

Junior Full Stack Developer Coop

Milton, ON · On-site

The [Junior Full Stack Developer - coop] role is to help plan, design, develop, test, launch, and maintain software applications in support of the achievement of business requirements. This includes ...

StackandCo

\n \n \n \n \n The successful Senior Full Stack Developer will assume ownership for a diversity of greenfield projects and mentor junior developers. \n \n \n \n \n \n This role will involve adding new ...

Invictus Direct

Senior Full Stack Engineer

Toronto, ON · Remote

$125K - $155K/yr

Description: Our client is seeking a Senior Full-Stack Engineer to play a key role in designing ... Lead technical discussions, perform code reviews, mentor junior developers, and contribute to ...

StackandCo

\n \n \n \n \n The successful Senior Full Stack Developer will assume ownership for a diversity of greenfield projects and mentor junior developers. \n \n \n \n \n \n This role will involve adding ...

Emterra Group

AI - Full Stack Engineer

Oakville, ON

$120K/yr

Mentor junior team members and promote AI literacy across the IT team and business stakeholders ... full stack software development * 3+ years of hands-on experience with Microsoft Azure (AZ-204 or ...

Netsweeper Inc.

Senior Full Stack Developer

Waterloo, ON · On-site +1

We're looking for a talented Senior Full Stack Developer to join our team of skilled developers and ... Mentor junior developer(s) in the design, development, and testing of React applications, providing ...

Scotiabank

Lead Full Stack Engineer

Toronto, ON

We are seeking a talented Full Stack Engineer to design, build, and maintain scalable applications ... Provide technical mentorship and guidance to senior and junior engineers * Help drive strategy to ...

Intuit

Staff Software Developer, Full Stack

Toronto, ON · Hybrid

CA$164K - CA$222K/yr

This engineer should be full-stack and prepared to work at all levels of the application. They will ... Coach and mentor junior engineers on best practices of software engineering, leveraging AI to ...

Manulife

Senior Full Stack Software Engineer

Waterloo, ON · On-site

CA$107K - CA$199K/yr

NET Full Stack Engineer to build and deliver scalable, enterprise-grade digital solutions that ... Mentor junior engineers and contribute to a culture of continuous learning and knowledge sharing.

StackandCo

\n \n \n \n \n We are looking for talented and driven Full Stack C# ... Net Software Developers (junior, mid and senior level roles) for an exciting and rapidly expanding ...

RideCo

Full Stack Software Engineer

Waterloo, ON · Hybrid

CA$100K - CA$140K/yr

As a Full Stack Developer at RideCo, you will contribute to shaping the architecture, design, and ... Provide technical mentorship and guidance to junior and mid-level developers. Testing and ...

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Junior Full Stack information

What is a junior full stack developer?

A Junior Full Stack Developer is an entry-level software professional who works on both the front-end and back-end parts of web applications. They are skilled in basic programming languages and frameworks needed for creating user interfaces as well as handling server-side logic and databases. Typically, juniors work under the guidance of more experienced developers, assisting with coding, debugging, and testing tasks while gradually building their expertise. Their role often involves learning and adapting to new technologies as they gain experience in the field.

What are the key skills and qualifications needed to thrive as a junior full stack developer?

To thrive as a Junior Full Stack Developer, you need a solid understanding of both front-end (HTML, CSS, JavaScript) and back-end (Node.js, Python, Java, or similar) programming, typically supported by a relevant degree or coding bootcamp experience. Familiarity with version control systems like Git, databases (SQL/NoSQL), and frameworks such as React or Express is commonly expected. Strong problem-solving abilities, teamwork, and effective communication are standout soft skills in this role. These skills and qualities ensure you can contribute effectively to diverse projects, adapt to evolving technologies, and collaborate within development teams.

How do junior full stack developers typically balance learning new technologies with meeting project deadlines?

As a Junior Full Stack Developer, you’ll often juggle learning new frameworks or languages while contributing to active projects. Many teams support this by pairing juniors with more experienced developers, offering code reviews, and allocating time for professional development within sprint cycles. While deadlines are important, managers usually recognize the learning curve and provide guidance to help you prioritize tasks and grow your skills without being overwhelmed. Open communication with your team about your progress and challenges is key to maintaining this balance.

What is the difference between Junior Full Stack vs Junior Front End Developer?

AspectJunior Full StackJunior Front End Developer
Required SkillsHTML, CSS, JavaScript, basic backend knowledge (Node.js, Python), database basicsHTML, CSS, JavaScript, frameworks like React or Angular, UI/UX design
Work EnvironmentBoth roles often work in collaborative teams within tech companies, startups, or agencies
Common UsageVersatile role involving both client-side and server-side developmentSpecialized role focusing on user interface and experience

Junior Full Stack developers have a broader skill set covering both front-end and back-end development, while Junior Front End Developers focus primarily on the user interface and client-side technologies. The choice depends on your interest in full project development versus specializing in UI/UX design.

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

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

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

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

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

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

What cities in Ontario are hiring for Junior Full Stack jobs?

Cities in Ontario with the most Junior Full Stack job openings:

Junior Full Stack jobs near you
Infographic showing various Junior Full Stack job openings in Ontario as of August 2026, with employment types broken down into 82% Full Time, 13% Part Time, 4% Contract, and 1% Nights. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution.

Junior Full Stack Developer

Private AI

Toronto, ON • On-site

Full-time

Posted 2 days ago

New

Job description

About Limina

Limina is the contextual data intelligence platform built for the AI era. Evolved from Private AI, the world's most accurate PII and PHI de-identification engine, Limina has expanded into a full platform play that governs sensitive data across the entire enterprise AI lifecycle: from classification and redaction through to agentic workflows, RAG pipelines, and real-time data security.

Brands like RBC,  Deepgram, and Boehringer Ingelheim already rely on our platform to build on, govern, and deploy AI against their most sensitive datasets. We've been recognized as a Gartner® Cool Vendor™ in Privacy and a World Economic Forum Technology Pioneer, and we’re backed by investors in Toronto, New York, Seattle, and San Francisco. 


What you’ll do 

This is a full stack developer role with a front end leaning mandate. You will be part of the team helping Limina build a new product offering. This role is a great opportunity to experience the  early stages of a product lifecycle. You will learn how to navigate changing roadmaps, customer demands, and novel technical problems as we scale. 

  • Building and maintaining features that prospects and customers directly interact with.
  • Solving technically complex engineering problems at enterprise scale.
  • Crafting an excellent user experience across Limina’s products.


You would be a good fit for this role if:

  • You have strong knowledge of Typescript and React.
  • You have a fundamental understanding of technical system design and are comfortable working on all parts of the tech stack.
  • You value and are interested in developing your skills for supplementary development processes such as planning, clear documentation, and high quality code reviews.


Nice to haves:

  • Comfortability with cloud providers like AWS.
  • Experience building REST APIs, with python frameworks such as Flask, Django, or FastAPI.
  • You have experience with, and know how to responsibly use, AI coding tools and LLMs. 
  • You understand the existential nature of the development process. Even though you have the knowledge that all systems are inherently messy and complex you still find joy in pushing the boulder up the hill. 


Why Work For Us 

We are a highly effective team of developers who are diligent about technical design choices, high quality code, and building efficient processes. 

High levels of seniority within the team means that you will be managed and mentored by developers who have worked at some of the biggest tech firms in the world. You will be working with people who will help build on your foundational skills as a developer and empower you to grow and evolve. 

You will be working at a high-velocity startup that offers competitive pay and equity. If you’re somebody who values autonomy, ownership, and accountability then you will fit right in.

Our office, located in central Toronto, is minutes away from great restaurants, third spaces for active hobbies, local game stores, and coffee shops.