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Junior Full Stack Engineer Jobs in Ontario (NOW HIRING)

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?

New

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?

New

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?

New

StackandCo

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

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 ...

KEV Group

Senior Full Stack Engineer

Toronto, ON

Deliver Full-Stack Capabilities Drive the design and development of user-facing experiences using ... Quality Engineering Write clean, maintainable, and well-tested code, applying shift-left practices ...

Basetwo

Software Engineer, Full Stack

Toronto, ON · On-site +1

Ingest and connect siloed databases The Role As a Full Stack Engineer, you will be working on one or more of our new product initiatives. You will maintain a close working relationship with our ...

Human Agency

Senior Full-Stack Engineer

Toronto, ON

We're seeking a Senior Full-Stack Engineer to join our growing team. In this role, you'll lead development initiatives, contribute to our SaaS products, and tackle exciting challenges in backend ...

Prophix

Senior Full-Stack Engineer

Etobicoke, ON · On-site

As a Senior Full-Stack Engineer on the FP&A Plus platform, you will design, build, and maintain the modular .NET capabilities that more than 2,500 finance teams around the world rely on every day for ...

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Junior Full Stack Engineer information

See Ontario salary details

$50K

$76.7K

$105K

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

As of Aug 22, 2026, the average yearly pay for junior full stack engineer in Ontario is $76,733.00, according to ZipRecruiter salary data. Most workers in this role earn between $63,000.00 and $90,000.00 per year, depending on experience, location, and employer.

What is a junior full stack engineer?

A Junior Full Stack Engineer is an entry-level software developer who works on both the front-end and back-end of web applications. They are typically responsible for building, testing, and maintaining features across the entire technology stack, often under the supervision of more experienced engineers. Juniors work with languages and frameworks such as JavaScript, HTML, CSS, Node.js, and databases like SQL or MongoDB. While they may not have deep expertise yet, they are expected to learn quickly, collaborate with team members, and gradually take on more complex tasks.

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

To thrive as a Junior Full Stack Engineer, you need a solid understanding of front-end and back-end development concepts, programming languages like JavaScript, HTML, CSS, and familiarity with frameworks such as React and Node.js, often supported by a bachelor's degree in computer science or related experience. Experience using version control systems like Git, basic database management (SQL/NoSQL), and cloud platforms is typically required. Strong problem-solving, teamwork, and communication skills help you collaborate effectively and adapt to fast-changing project needs. These abilities are essential for building reliable, scalable web applications and contributing meaningfully to development teams.

How does a junior full stack engineer typically collaborate with other team members on a project?

As a Junior Full Stack Engineer, you’ll regularly work alongside front-end and back-end developers, designers, and product managers to deliver features and resolve issues. Collaboration often includes participating in daily stand-ups, code reviews, and sprint planning sessions. You’ll be expected to communicate progress and challenges clearly, seek guidance when needed, and contribute to shared code repositories using version control tools like Git. This collaborative environment helps you learn quickly and build strong relationships within a multidisciplinary team.

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

AspectJunior Full Stack EngineerJunior Front End Developer
Required SkillsProficiency in both front-end and back-end technologies (HTML, CSS, JavaScript, server-side languages, databases)Strong skills in HTML, CSS, JavaScript, and front-end frameworks (React, Angular, Vue)
Work EnvironmentWorks on both client-side and server-side development, often in full project cyclesFocuses primarily on user interface and user experience development
Common UsageUsed in startups and small to medium companies requiring versatile developersCommon in companies emphasizing UI/UX and front-end design

The main difference is that a Junior Full Stack Engineer handles both front-end and back-end tasks, while a Junior Front End Developer specializes in user interface development. The full stack role requires knowledge of server-side technologies, whereas the front-end role focuses on creating engaging user experiences.

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 Junior Full Stack Engineer jobs in Ontario?

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

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

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

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

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

Junior Full Stack Engineer jobs near you
Infographic showing various Junior Full Stack Engineer job openings in Ontario as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $76,733 per year, or $36.9 per hour.

Full Stack Engineer - PricingCenter

Guidewire Software

Mississauga, ON

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 18 days ago

Job description

Summary

As our engineering organization expands, we are seeking a product-focused full-stack engineer to drive the growth and evolution of our products. This position is ideal for an experienced professional who prioritizes clean, reliable systems and thrives in a collaborative, fast-paced setting with a strong sense of ownership.

Job Description

What you'll do

  • Execute full-stack engineering tasks utilizing Python (RESTful APIs using Flask and FastAPI with extensive use of SQLAlchemy and Pydantic), React and TypeScript.

  • Design and build proprietary solutions involving insurance pricing algorithms, modeling, and data visualizations.

  • Partner with product management to convert business needs into secure, high-quality production features, applying professional judgment to choose appropriate tools and architectural patterns.

  • Manage the full development lifecycle: analyze requirements, architect solutions, conduct spikes, develop PoCs, and deploy scalable, thoroughly tested production code.

  • Maintain and refine existing applications to ensure consistent alignment with established SLOs.

  • Participate in agile ceremonies, contribute to RFC/ADR documentation, and perform peer code reviews to maintain high engineering standards.

  • Enhance observability and reliability of applications/components by implementing logging, metrics, tracing, dashboards, and alerting that support incident triage, rootcause analysis, and continuous improvement.

What you'll bring

  • Full-stack development: Hands-on experience in building and deploying end-to-end web applications, utilizing modern frontend tools like React and TypeScript, combined with Python-based backend APIs and major cloud infrastructures (AWS, GCP, or Azure).

  • 4+ years of relevant professional experience in software development.

  • Experience with some of the following: FastAPI, SQLAlchemy, Pydantic, Celery.

  • Practical experience with containerization and orchestration (Docker, Kubernetes) and familiarity with CI/CD and DevOps practices and tools (Github Actions, Git-based workflows).

  • Strong foundation in Algorithms, Data Structures, and performance optimization techniques for scalable applications.

  • Experience with relational databases (like Postgres) and familiarity with NoSQL databases (like Redis) is an advantage.

  • Proactive mindset for learning new technologies, robust work ethic, commitment to resolving technical challenges, and responsibility.

  • Excellent communication skills with the ability to articulate technical concepts.

Nice to have

  • Exposure to Large Language Models (LLMs) and AI development tools (Claude, Copilot).

  • Data engineering background or interest, familiarity with NumPy, pandas, Polars is a plus.

  • Experience with Tanstack, React Hook Form, Vite is a plus.

The Canadian CAD base salary range for this full-time position is 106,000.00 - 132,000.00. Your base pay will depend on your experience, skills, education, training, and location among other factors. All full-time positions or part-time roles working 30 hours or more a week at Guidewire are eligible for benefits that support their health and well-being including health, dental, and vision insurance, paid time off, and a company sponsored retirement plan. In addition, some roles may be eligible for the annual company bonus plan, commissions, and/or long term incentive awards which are contingent on a variety of factors including, but not limited to, company and employee performance.

About Guidewire

Guidewire is the platform P&C insurers trust to engage, innovate, and grow efficiently. We combine digital, core, analytics, and AI to deliver our platform as a cloud service. More than 540+ insurers in 40 countries, from new ventures to the largest and most complex in the world, run on Guidewire.

As a partner to our customers, we continually evolve to enable their success. We are proud of our unparalleled implementation track record with 1600+ successful projects, supported by the largest R&D team and partner ecosystem in the industry. Our Marketplace provides hundreds of applications that accelerate integration, localization, and innovation.

For more information, please visit www.guidewire.com and follow us on Twitter: @Guidewire_PandC.

Guidewire Software, Inc. is proud to be an equal opportunity and affirmative action employer. We are committed to an inclusive workplace, and believe that a diversity of perspectives, abilities, and cultures is a key to our success. Qualified applicants will receive consideration without regard to race, color, ancestry, religion, sex, national origin, citizenship, marital status, age, sexual orientation, gender identity, gender expression, veteran status, or disability. All offers are contingent upon passing a criminal history and other background checks where it's applicable to the position.

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