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Junior Software Developer Java Jobs in Ontario (NOW HIRING)

Private AI

Junior Developer

Toronto, ON · On-site

What is the opportunity As a Junior Software Developer at Limina, you'll join our engineering team building and maintaining the services that power our data privacy platform. This is a hands-on role ...

New

StackandCo

\n \n \n \n \n Junior Java Developer 35K p\/a + benefits Java, AWS, Javascript \n \n \n \n \n \n We're looking for Junior Java Developers to join a globally renowned Fintech at their trendy Dublin ...

Scotiabank

Junior Software Engineer

Toronto, ON

Help document software features and perform reviews with team members * Participate in code reviews ... Familiarity with at least one programming language such as Java, JavaScript, Python * Basic ...

Software Secured

Junior Pentester

Ottawa, ON · On-site +1

CA$70K - CA$95K/yr

... developers write secure code. You will be a part of the local and global security community and ... Demonstrated software development background in one or more of Python, .NET, Ruby, Java ...

StackandCo

Java Software Developer

Galway, NY · On-site

Bachelor's Degree in Engineering \/ Computer Science \n * 3+ years' experience as a full stack developer on Java or AEM \n * Strong experience within: JavaScript, HTML5, CSS \/ Sass \n * Development ...

Virtusa

Senior Java Developer

Mississauga, ON

... ability to mentor junior engineers while collaborating with cross-functional teams. Key ... software development Strong proficiency in Java (Java 17+) Experience with Spring / Spring Boot ...

Virtusa

Senior Java Developer

Mississauga, ON · On-site

... ability to mentor junior engineers while collaborating with cross-functional teams. Key ... software development Strong proficiency in Java (Java 17+) Experience with Spring / Spring Boot ...

Sync.com

Software Developer

Toronto, ON · On-site

CA$97K - CA$100K/yr

Backend: Node.js, TypeScript, PHP, Java * Frontend: Angular, Vue.js, React * Databases: MySQL ... Experience mentoring junior developers or interns. Perks: * Generous wellness program * Best-in-the ...

Virtusa

Senior Java Developer

Mississauga, ON

... ability to mentor junior engineers while collaborating with cross-functional teams. Key ... software development Strong proficiency in Java (Java 17+) Experience with Spring / Spring Boot ...

Poly Services Group

Senior Java Developer

Toronto, ON · On-site

SENIOR JAVA SOFTWARE DEVELOPER Location: Toronto, ON (uptown) Industry: Technology Type: Permanent WHAT IS THE OPPORTUNITY. Our client is an 18-year-old SaaS developer and recognized leader of ...

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 ...

Intuit

Staff Software Developer, Full Stack

Toronto, ON · Hybrid

CA$164K - CA$222K/yr

The ideal candidate is an experienced Software Developer who is experienced with Java, TypeScript ... Coach and mentor junior engineers on best practices of software engineering, leveraging AI to ...

StackandCo

We have a requirement for permanent Java Software Engineer to join their growing Development team in Dublin. \n \n \n \n \n \n By being apart of this growing team you will write clean and efficient ...

StackandCo

... a Java software engineer \n * JAVA 1.7 & higher. Significant and demonstrable experience of implementing Java best practice, valuing scalability, availability and performance. \n * Spring\/Spring ...

Syntronic

Lead Software Developer (AOSP)

Waterloo, ON · On-site

CA$140K - CA$170K/yr

Lead a small team of junior developers, providing guidance, conducting design reviews, and ... Expert-level Java and Kotlin. * Android Tools: Strong command of ADB, xTS (diagnosing issues ...

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All JobsSoftware Developer Java JobsJunior Software Developer Java JobsJunior Software Developer Java Jobs in Ontario

Junior Software Developer Java information

What does a junior software developer Java do?

A Junior Software Developer Java is an entry-level programmer who specializes in building, testing, and maintaining software applications using the Java programming language. They typically work under the supervision of senior developers and contribute to coding, debugging, and documentation. Their responsibilities often include fixing bugs, writing unit tests, and collaborating with team members to deliver functional software solutions. This role is ideal for individuals who have a basic understanding of Java and are eager to gain professional experience in software development.

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

To thrive as a Junior Software Developer (Java), you need a solid understanding of Java programming, algorithms, and object-oriented principles, often supported by a degree in computer science or related field. Familiarity with development tools like Eclipse or IntelliJ IDEA, version control systems such as Git, and knowledge of build tools like Maven or Gradle is often required. Strong problem-solving abilities, willingness to learn, and effective communication skills help junior developers collaborate and adapt quickly. These skills are crucial for building reliable software, integrating smoothly into development teams, and growing within the role.

What are some common challenges faced by junior software developers working with Java, and how can they overcome them?

Junior Software Developers working with Java often encounter challenges such as understanding complex codebases, managing version control with tools like Git, and applying best practices for clean and efficient code. To overcome these obstacles, it's helpful to actively participate in code reviews, seek guidance from senior developers, and make use of online resources and documentation. Joining stand-up meetings and collaborating closely with teammates can also accelerate learning and help new developers adapt to the team's workflow.

What is the difference between Junior Software Developer Java vs Junior Software Developer Python?

AspectJunior Software Developer JavaJunior Software Developer Python
Required CredentialsBachelor's in CS or related field, Java certifications (optional)Bachelor's in CS or related field, Python certifications (optional)
Work EnvironmentEnterprise applications, backend development, large-scale systemsData analysis, scripting, web development, AI/ML projects
Employer & Industry UsageFinancial services, enterprise software, telecomTech startups, data science firms, research institutions
Common Search & ComparisonYesYes

Both roles typically require a bachelor's degree in computer science or related fields. Java developers often work on enterprise-level applications in industries like finance and telecom, while Python developers focus on data analysis, scripting, and AI projects in startups and research. The choice depends on your career interests and industry focus.

What are popular job titles related to Junior Software Developer Java jobs in Ontario?

For Junior Software Developer Java jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Junior Software Developer Java jobs in Ontario look for?

The top searched job categories for Junior Software Developer Java jobs in Ontario are:

What cities in Ontario are hiring for Junior Software Developer Java jobs?

Cities in Ontario with the most Junior Software Developer Java job openings:

Junior Software Developer Java jobs near you
Infographic showing various Junior Software Developer Java job openings in Ontario as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 16% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution.

Junior Developer

Private AI

Toronto, ON • On-site

Full-time

Posted 3 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 is the opportunity

As a Junior Software Developer at Limina, you'll join our engineering team building and maintaining the services that power our data privacy platform. This is a hands-on role where you'll work across a modern backend architecture, contributing to the systems our customers and internal teams depend on every day.

You'll be supported by an experienced team of backend engineers, and this role is designed to help you grow quickly. You'll get real ownership over features and fixes from day one, with plenty of guidance along the way.


What does the day to day look like?

Our platform is built from independently deployable services, including a web API layer and a configurable background processing system, along with shared code for data models, caching, and job handling. As a junior developer, you'll get exposure to the full lifecycle of a production service, from API design to background job orchestration to database changes.

Responsibilities include:

  • Building and maintaining API endpoints and the business logic behind them
  • Contributing to asynchronous and background processing solutions that help our systems scale
  • Participating in database design and management, including schema changes over time
  • Writing and maintaining tests across unit, integration, and performance levels
  • Supporting analytics and observability efforts so we can understand how our systems behave in production
  • Participating in our CI/CD workflows, from code review through deployment
  • Contributing to user facing documentation and guides as you learn the system, so the next person ramps up faster than you did
  • Working with senior engineers on authorization design and other architectural decisions
  • Collaborating with other teams across the company to help design solutions based on customer requests and feedback


Required skills

  • Solid foundation in Python
  • Understanding of REST API concepts and basic backend architecture
  • Familiarity with relational databases (SQL, schema design)
  • Some exposure to Git and collaborative development workflows
  • Comfortable reading and learning from an existing codebase and documentation
  • Strong problem solving instincts and a willingness to ask questions


Nice to have

  • Exposure to a Python web framework (such as FastAPI, Flask, or Django)
  • Familiarity with Docker and containerized development environments
  • Some experience with background job or queue systems
  • Familiarity with caching or session stores such as Redis
  • Exposure to an ORM or database migration tools
  • Understanding of authentication, authorization, or access control systems
  • Experience with cloud platforms such as AWS
  • Familiarity with project management tools such as Jira