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Junior Developer Jobs in Halton, ON (NOW HIRING)

Arcadion

Junior AI Developer

Ottawa, ON · On-site

We are looking for a Junior AI Developer to join our in-house team at our Ottawa headquarters. This is a full-time, on-site position offering a unique opportunity to work directly with senior ...

Ameresco

Junior Engineer

Richmond Hill, ON · On-site

Ameresco is seeking a graduate engineer to join our team in Richmond Hills, Canada, to support multi-million-dollar energy efficiency and renewable energy projects. Responsibilities : * Building and ...

StackandCo

\n \n \n \n \n We are looking for Junior Java Developers to join a globally renowned FinTech company at their trendy Dublin City Centre offices. \n \n \n \n \n \n You'll delve deep into their cloud ...

StackandCo

\n \n \n \n \n We are looking for an ambitious Junior C# Software Developer to join a high calibre team of Senior Developers in the West Dublin area. \n \n \n \n \n \n Our client dominate within their ...

Q-Block Computing

Junior Quantum Engineer

Ottawa, ON · On-site

CA$85K - CA$110K/yr

The Junior Quantum Engineer will join Q-Block's R&D engineering team, working on the design, integration, characterization, and validation of quantum hardware systems across the company's active ...

Q-Block Computing

Junior Quantum Engineer

Ottawa, ON

$85K - $110K/yr

The Junior Quantum Engineer will join Q-Block's R&D engineering team, working on the design, integration, characterization, and validation of quantum hardware systems across the company's active ...

Providius

Junior Machine Learning Engineer

Hamilton, ON · On-site

... a junior machine learning engineer to join our team and grow into a strong, hands-on ML engineer. This is a role for someone early in their career who is eager to learn, comfortable getting their ...

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Junior Developer information

What is a junior developer?

A Junior Developer is an entry-level software professional who assists in creating, testing, and maintaining software applications. They typically work under the supervision of more experienced developers, learning best practices and acquiring new technical skills on the job. Junior Developers are expected to write code, fix bugs, and contribute to project documentation while gradually gaining experience in software development processes. This role is ideal for recent graduates or individuals transitioning into the tech industry.

What are the key skills and qualifications needed to thrive as a junior developer, and why are they important?

To thrive as a Junior Developer, you need a solid understanding of programming fundamentals, basic knowledge of software development life cycles, and ideally a degree in computer science or a related field. Familiarity with coding languages like JavaScript, Python, or Java, as well as version control systems such as Git, is commonly expected. Strong problem-solving abilities, eagerness to learn, and effective communication help you integrate into teams and adapt to new challenges. These skills are crucial for producing quality code, collaborating with colleagues, and growing within the fast-paced tech environment.

What are some common challenges faced by junior developers during their first year, and how can they overcome them?

Junior Developers often face challenges such as adapting to new codebases, understanding company workflows, and bridging the gap between academic knowledge and real-world applications. It’s common to feel overwhelmed by unfamiliar technologies or debugging complex issues. Overcoming these challenges involves proactively seeking mentorship, participating in code reviews, and consistently asking questions to clarify concepts. Building strong communication skills and collaborating with more experienced team members can also accelerate the learning process and help you grow more confident in your role.

What is the difference between Junior Developer vs Software Engineer?

AspectJunior DeveloperSoftware Engineer
Required CredentialsTypically an associate degree or bootcamp certificationBachelor's degree in Computer Science or related field
Work EnvironmentEntry-level, supervised tasks, learning-focusedMore complex projects, often with team leadership responsibilities
Employer UsageCommon in startups, small companies, internshipsUsed across industries, larger companies, and tech firms
Search & Comparison IntentUnderstanding entry-level roles, career startClarifying career progression, skill requirements

In summary, Junior Developers are entry-level roles focused on learning and supporting development tasks, often requiring minimal experience. Software Engineers typically have more experience, advanced skills, and handle complex projects, making them a step up in the software development career path.

How to get a job as a junior developer?

To get a job as a junior developer, build a strong foundation in programming languages like JavaScript, Python, or Java, and create a portfolio of projects to demonstrate your skills. Gaining experience through internships, coding bootcamps, or online courses can improve your chances, and applying to entry-level positions through job boards or company websites is essential.

What cities near Halton, ON are hiring for Junior Developer jobs?

Cities near Halton, ON with the most Junior Developer job openings:

Junior Developer jobs near you

Junior AI Developer

Arcadion

Ottawa, ON • On-site

Full-time

Posted 15 days ago

Job description

About Arcadion

Arcadion is a leading full-stack enterprise IT services and AI development firm headquartered in Ottawa. We specialize in delivering cutting-edge solutions across cloud infrastructure, cybersecurity, digital transformation, and AI automation. Our AI division is at the forefront of building intelligent systems, enterprise AI agents, and next-generation tools using advanced language models (LLMs), RAG pipelines, and machine learning technologies.

We are looking for a Junior AI Developer to join our in-house team at our Ottawa headquarters. This is a full-time, on-site position offering a unique opportunity to work directly with senior engineers and the Director of AI on innovative projects that span across sectors like healthcare, finance, construction, robotics, and legal tech.


Role Overview

As a Junior AI Developer, you’ll support the design, development, testing, and deployment of AI and machine learning applications. You will contribute to real-world use cases involving custom LLM integrations, automation agents, document intelligence systems, and AI-enhanced enterprise tools.

Key Responsibilities

  • Work closely with the Director of AI on the development of AI agents, copilots, and intelligent automation tools
  • Assist in building, testing, and fine-tuning large language models and retrieval-augmented generation (RAG) pipelines
  • Contribute to prompt engineering and integration of LLMs into web-based or API-driven applications
  • Support data preprocessing, embedding, and vector database structuring (e.g., Pinecone, Weaviate)
  • Write clean, testable Python code and support REST API integrations
  • Participate in QA testing, performance benchmarking, and debugging AI system behavior
  • Stay updated on emerging tools, frameworks, and trends in the AI ecosystem
  • Collaborate with cross-functional teams including DevOps, cloud engineers, and UI/UX designers

✅ Requirements

  • Degree or diploma in Computer Science, AI/ML, Data Science, Software Engineering, or related discipline
  • Foundational knowledge in machine learning and NLP principles
  • Proficiency in Python and familiarity with ML libraries like scikit-learn, PyTorch, or TensorFlow
  • Understanding of APIs, JSON, Git-based version control, and cloud fundamentals
  • Excellent problem-solving skills and attention to detail
  • Willingness to work on-site full-time in our Ottawa office (this is not a hybrid or remote role)

Bonus Skills (Assets)

  • Exposure to LLMs such as OpenAI, Claude, Mistral, or LLaMA
  • Experience with LangChain, Hugging Face Transformers, or similar frameworks
  • Basic experience with vector databases or embedding models
  • Familiarity with Azure, AWS, or GCP
  • Interest in chatbot development or knowledge-based search applications

What You’ll Gain

  • Direct mentorship from experienced AI architects and our Director of AI
  • Access to real-world enterprise projects and hands-on development with production-grade models
  • Growth path toward senior AI engineering or solution architecture roles
  • An innovative and supportive team environment inside one of Ottawa’s leading IT firms
  • Competitive compensation and performance-based opportunities

Apply Now

If you're ready to kickstart your career in AI and want to be part of a forward-thinking team building real-world applications, we’d love to meet you.