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Junior Full Stack Software Developer Jobs in Ontario

Quantiphi, Inc.

Full Stack Developer

Toronto, ON · Remote

Full Stack Software Developer Experience Level: 5-10 yrs Work Location: US East/Canada (Remote) Role Overview: We're looking for a Full Stack Software Developer to design and build scalable, high ...

StackandCo

Bachelor's Degree in Engineering \/ Computer Science \n * 3+ years of experience as a full stack developer on Magento 1.x \/2.x \n * LAMP stack expertise with fundamentals Magento, PHP\/or Zend ...

StackandCo

... full stack developer on Magento 1.x \/2.x \n * LAMP stack expertise with fundamentals Magento, PHP\/or Zend framework \n * Proficiency in object\-oriented programming \n * Experience with Lean ...

StackandCo

Bachelor's Degree in Engineering \/ Computer Science \n * 3+ years of experience as a full stack developer on Magento 1.x \/2.x \n * LAMP stack expertise with fundamentals Magento, PHP\/or Zend ...

Aversan

Senior Full Stack Developer

Mississauga, ON · On-site

CA$110K - CA$140K/yr

Senior Full Stack Software Engineer Aversan Inc.(www.aversan.com) is a trusted multi-service ... software solutions * Conduct code, design, and technical reviews for both senior and junior ...

YuJa

Full Stack Software Developer

Toronto, ON · Hybrid

CA$90K - CA$100K/yr

You can recognize software problems and develop creative solutions within an energizing environment. * You have programming experience with Java (J2EE), Enterprise Java Beans (EJBs), Java Server ...

YuJa Inc.

Full Stack Software Developer

Toronto, ON · On-site

You can recognize software problems and develop creative solutions within an energizing environment. * You have programming experience with Java (J2EE), Enterprise Java Beans (EJBs), Java Server ...

Magna

Junior Full Stack Developer Coop

Milton, ON

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 ...

US Mobile

Full-Stack Software Engineer

Toronto, ON

CA$130K - CA$160K/yr

As a Full-Stack Software Engineer, you will: * Work on developing and deploying exciting new features * Advise on technologies and present solutions to the team * Take on legacy architecture and ...

Ignite Talent Solutions

$100K - $150K/yr

Lead Full Stack Developer / Solutions Architect - North America (Remote) Our client is an ... Excellent leadership skills to mentor and guide junior engineers, with experience in technical ...

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All JobsJunior Full Stack Software Developer JobsJunior Full Stack Software Developer Jobs in Ontario

Junior Full Stack Software Developer information

See Ontario salary details

$38.5K

$98.3K

$165K

How much do junior full stack software developer jobs pay per year?

As of Jun 10, 2026, the average yearly pay for junior full stack software developer in Ontario is $98,300.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,000.00 and $120,500.00 per year, depending on experience, location, and employer.

What does a Junior Full Stack Software Developer do?

A Junior Full Stack Software Developer is responsible for assisting in the design, development, and maintenance of both front-end and back-end components of web applications. They work with various programming languages, frameworks, and databases to build and support software solutions. Typically, they collaborate with senior developers and other team members to learn best practices, resolve bugs, and implement new features. This role is ideal for those who have foundational programming knowledge and are looking to gain hands-on experience across the entire software development stack.

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

AspectJunior Full Stack Software DeveloperJunior 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)
Work EnvironmentInvolved in both client-side and server-side development, often in full project cyclesPrimarily focused on user interface and client-side features
Common UsageUsed in roles requiring versatile development across the stackUsed in roles specializing in UI/UX and front-end design

The main difference is that a Junior Full Stack Software Developer works on both front-end and back-end tasks, while a Junior Front End Developer focuses solely on the user interface and client-side development. The full stack role requires broader skills, whereas the front-end role specializes in creating engaging user experiences.

What are some typical daily tasks and collaboration expectations for a Junior Full Stack Software Developer?

As a Junior Full Stack Software Developer, your daily tasks often include writing and testing code for both front-end and back-end components, debugging issues, and participating in code reviews. You’ll regularly collaborate with other developers, designers, and sometimes product managers during stand-up meetings or sprint planning sessions to ensure alignment on project goals. It's common to work under the guidance of senior developers while learning best practices and receiving constructive feedback. This collaborative environment not only helps you grow technically but also improves your communication and teamwork skills.

What are the key skills and qualifications needed to thrive as a Junior Full Stack Software Developer, and why are they important?

To excel as a Junior Full Stack Software Developer, you need a solid understanding of programming languages (such as JavaScript, Python, or Java), front-end and back-end frameworks, and a relevant degree or coding bootcamp experience. Familiarity with tools like Git, databases (e.g., SQL, MongoDB), and cloud platforms, as well as knowledge of agile methodologies, is typically expected. Problem-solving ability, eagerness to learn, and effective teamwork are standout soft skills in this role. These skills and qualities ensure you can build, maintain, and improve applications efficiently while collaborating well within a development team.
What are the most commonly searched types of Full Stack Software Developer jobs in Ontario? The most popular types of Full Stack Software Developer jobs in Ontario are:
What are popular job titles related to Junior Full Stack Software Developer jobs in Ontario? For Junior Full Stack Software Developer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Junior Full Stack Software Developer jobs in Ontario look for? The top searched job categories for Junior Full Stack Software Developer jobs in Ontario are:
What cities in Ontario are hiring for Junior Full Stack Software Developer jobs? Cities in Ontario with the most Junior Full Stack Software Developer job openings:
Junior Full Stack Software Developer jobs near you
Infographic showing various Junior Full Stack Software Developer job openings in Ontario as of June 2026, with employment types broken down into 32% Full Time, 50% Part Time, and 18% Temporary. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $98,300 per year, or $47.3 per hour.
Full Stack Developer

Full Stack Developer

Quantiphi, Inc.

Toronto, ON • Remote

Other

Posted 28 days ago

Job description

While technology is the heart of our business, a global and diverse culture is the heart of our success. We love our people and we take pride in catering them to a culture built on transparency, diversity, integrity, learning and growth.
If working in an environment that encourages you to innovate and excel, not just in professional but personal life, interests you- you would enjoy your career with Quantiphi!

About Quantiphi:

Quantiphi is an award-winning, AI-First digital engineering and consulting company focused on delivering high-impact Services and Solutions that help organizations solve what truly matters. We partner with enterprises to reimagine their businesses through intelligent, scalable, and transformative AI driving measurable outcomes at the very core of their operations.

Since our founding in 2013, Quantiphi has tackled some of the world's most complex business challenges by combining deep industry expertise, disciplined cloud and data engineering practices, and cutting-edge applied AI research. Our work is rooted in delivering accelerated, quantifiable business value, not just technology for technology's sake.

Headquartered in Boston, Quantiphi is a global organization with 4,000+ professionals serving clients across key industry verticals, including BFSI, Healthcare & Life Sciences, CPG, MFG, TME etc. As an Elite and Premier partner to leading cloud and AI platforms such as NVIDIA, Google Cloud, AWS, and Snowflake, we build and deliver enterprise-grade AI services and solutions that create real-world impact.

We've been recognized with:

  • 17x Google Cloud Partner of the Year awards in the last 8 years.

  • 3x AWS AI/ML award wins.

  • 3x NVIDIA Partner of the Year titles.

  • 2x Snowflake Partner of the Year awards.

  • We have also garnered top analyst recognitions from Gartner, ISG, and Everest Group.

  • We offer first-in-class industry solutions across Healthcare, Financial Services, Consumer Goods, Manufacturing, and more, powered by cutting-edge Generative AI and Agentic AI accelerators.

  • We have been certified as a Great Place to Work for the third year in a row- 2021, 2022, 2023.

Be part of a trailblazing team that's shaping the future of AI, ML, and cloud innovation.

Your next big opportunity starts here!

For more details, visit: Website or LinkedIn Page.

Role: Full Stack Software Developer

Experience Level: 5-10 yrs

Work Location: US East/Canada (Remote)

Role Overview:

We're looking for a Full Stack Software Developer to design and build scalable, high-performance applications powering next-generation Agentic AI platforms.

In this role, you'll lead the development of API-first, distributed systems and contribute across the stack from backend microservices to modern frontend experiences. You'll partner closely with AI/ML teams to integrate LLM-driven workflows, RAG architectures, and multi-agent systems into production-grade applications.

This is a hands-on engineering role with strong ownership across architecture, developer experience, and system reliability.

Key Responsibilities:

  • Design and build scalable full stack applications using React, TypeScript, and Next.js on the frontend and Python (FastAPI) and/or Node.js on the backend

  • Architect and maintain RESTful APIs and microservices with strong versioning, backward compatibility, and API-first design principles

  • Develop distributed systems leveraging event-driven architectures, messaging systems (Kafka, Pub/Sub), and asynchronous processing

  • Build and integrate LLM-powered applications, including RAG pipelines, agentic workflows, and tool-calling frameworks (LangChain, LangGraph)

  • Collaborate with AI/ML teams to integrate model serving platforms and orchestrate multi-agent systems

  • Implement real-time capabilities using WebSockets, Server-Sent Events (SSE), or streaming frameworks

  • Ensure high-quality engineering standards across testing (TDD/BDD), CI/CD pipelines, and infrastructure-as-code

  • Deploy and manage cloud-native applications on GCP and/or Azure, leveraging Docker and Kubernetes

  • Champion observability and monitoring using logging, metrics, and tracing (e.g., OpenTelemetry)

  • Build developer-friendly tools including SDKs, documentation, and API portals

  • Mentor engineers and contribute to system design, architecture reviews, and best practices

Basic Qualifications:

  • 5-10 years of experience in full stack software development

  • Strong expertise in:

  • Frontend: React, TypeScript, Next.js

  • Backend: Python (FastAPI) and/or Node.js

  • Proven experience building REST APIs, microservices, and distributed systems

  • Hands-on experience with PostgreSQL and data modeling

  • Experience with Docker, Kubernetes, and cloud platforms (GCP and/or Azure)

  • Strong knowledge of CI/CD pipelines (GitHub Actions or similar)

  • Experience with API lifecycle management (authentication, versioning, rate limiting)

  • Solid understanding of system design, scalability, and performance optimization

  • Experience integrating or building applications with LLMs, RAG, or Agentic AI systems

  • Familiarity with LangChain, LangGraph, or similar frameworks

Other Qualifications (OQs):

  • Experience with:

    • LlamaIndex, advanced LangGraph workflows, or multi-agent orchestration

    • Prompt engineering and context engineering

    • Model Context Protocol (MCP) or agent interoperability frameworks

  • Exposure to GraphQL, gRPC, and advanced API design patterns

  • Experience with event-driven systems (Kafka, Pub/Sub, Redis)

  • Knowledge of vector databases (pgvector, Pinecone, Milvus)

  • Experience building real-time/streaming UIs (WebSockets, SSE)

  • Understanding of OAuth 2.0, OIDC, RBAC for secure systems

  • Strong testing practices (TDD, Playwright, contract testing)

  • Experience with OpenTelemetry or similar observability tooling

  • Familiarity with Domain-Driven Design (DDD) and API-first architecture

Healthcare Domain Experience (Nice to Have):

  • Experience working with FHIR R4, HL7 v2, or SMART on FHIR

  • Integration with EHR systems (e.g., Epic)

  • Understanding of HIPAA compliance and healthcare data privacy

  • Exposure to clinical workflows, CDS Hooks, or patient-facing applications

  • Experience building clinical decision support systems or healthcare interoperability solutions

What's in it for YOU at Quantiphi:

  • Make an impact at one of the world's fastest-growing AI-first digital engineering companies.

  • Upskill and discover your potential as you solve complex challenges in cutting-edge areas of technology alongside passionate, talented colleagues.

  • Work where innovation happens - work with disruptive innovators in a research-focused organization with 60+ patents filed across various disciplines.

  • Stay ahead of the curve immerse yourself in breakthrough AI, ML, data, and cloud technologies and gain exposure working with Fortune 500 companies.

If you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us!

Apply