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Junior Software Developer Java Jobs in London, ON

Td

Associate Software Engineer (Fullstack)

London, ON · On-site

CA$59K - CA$84K/yr

About the role We are looking for an Associate Software Engineer to join a collaborative ... Use Java, Node.js, Angular, REST APIs, SQL, and related technologies to build and support ...

ZTR

Frontend-Focused Full Stack Developer

London, ON · On-site

Collaborating with teams to design, develop, and software components and features (both front-end ... Proficient with Spring Boot, NodeJS or similar Java web-based application frameworks * Accomplished ...

ZTR

Frontend-Focused Full Stack Developer

London, ON · On-site

Collaborating with teams to design, develop, and software components and features (both front-end ... Proficient with Spring Boot, NodeJS or similar Java web-based application frameworks * Accomplished ...

Squarepoint Capital

Junior Quant Developer

London, ON · On-site

As a Quant Developer at Squarepoint you will work side-by-side with Quant Researchers and Traders to implement novel trading strategies and software for research projects. You could develop tools to ...

Bullish

Senior Engineer, Risk Engineering

London, ON · On-site

Software Design Fundamentals: Well-versed in Agile methodologies, design patterns, DRY principles ... Proficient with modern DevOps and cloud tools, including Git, Docker, Kubernetes, and cloud ...

ZTR

Senior Firmware Developer

London, ON · On-site

Mentor junior and intermediate developers in best practices and edge computing design Who are you?: * Bachelor's of Computer Science, Software Engineering or related technical field. * Expert in C ...

ZTR

Senior Firmware Developer

London, ON · On-site

Mentor junior and intermediate developers in best practices and edge computing design Who are you?: * Bachelor's of Computer Science, Software Engineering or related technical field. * Expert in C ...

ZTR

DevOps Engineer

London, ON · On-site

Design, build and maintain the CI/CD pipelines for automated software builds, tests, and ... Experience working with backend Java services and database technologies (Postgres, NoSQL, etc.

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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 London, ON?

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

What job categories do people searching Junior Software Developer Java jobs in London, ON look for?

The top searched job categories for Junior Software Developer Java jobs in London, ON are:

What cities near London, ON are hiring for Junior Software Developer Java jobs?

Cities near London, ON 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 London, ON as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Junior Software Developer (Python)

Squarepoint Capital

London, ON • On-site

Full-time

Re-posted 2 days ago

Job description

Please only apply to the one job you feel best fits your skillset and experience. If our team feels you are better suited for another role, we will reach out about the alternate opportunity.

Position Overview:

At Squarepoint we use Python to build a great deal of the software needed to solve crucial problems every day. You will work on a wide range of systems that fuel our trading success including, but not limited to, core tooling and frameworks, data pipelines used to feed predictive models in research and trading, and software products used worldwide by traders and researchers.

You will collaborate with experienced software developers and quant researchers to enable the continued growth of our investment business, solving problems at scale, and gaining a unique chance to learn from some of the most talented individuals in the industry.

Required Qualifications:  

  • Degree in Computer Science, Computer Engineering, Applied Math, Physics, Quantitative Finance, or Financial Engineering/MFE
  • Up to 4 years experience in a relevant role such as software or quant development, or similar
  • Experience with Python, git, and Linux
  • Excellent written and verbal communication skills
  • Eagerness to continuously learn new technologies and develop with us
  • Ability to work well in a fast-paced environment

Nice to Have:

  • Experience with any of C++, Rust, KDB+/q, JavaScript/TypeScript/React
  • Experience with database management systems and related technologies such as SQL
  • Experience working in an investment or financial business is useful

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