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Junior Java Programmer Jobs in Ontario (NOW HIRING)

Serve as a subject matter expert, mentoring junior engineers and providing technical guidance to ... Strong proficiency in Java, Spring, Spring Boot and its ecosystem. Hands-on experience with data ...

They should be proficient in at least one object-oriented programming language such as Java, Python ... Provide technical guidance and mentorship to junior team members. Ensure the quality of the ...

As a Junior Software Technical Support Engineer supporting the Nokia Network Services Platform (NSP ... Academic or personal project experience with Java, python and/or Go (Golang) * Interest in network ...

Apps Dev Tech Lead Analyst

Mississauga, ON · On-site

CA$120K - CA$170K/yr

The candidate will be a strong Java developer. The candidate will be hands on and asked to lead a ... Serve as advisor or coach to more junior developers. Operate with a limited level of direct ...

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 ...

Provide technical guidance and mentorship to junior developers. Mandatory Skills * Proven ... Proficiency in programming languages such as Python, Java, or Go. * Familiarity with ...

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 ...

Showing results 41-60

Junior Java Programmer information

What is a junior Java programmer?

Junior Java Programmers are entry-level software developers who specialize in writing, testing, and maintaining code using the Java programming language. They typically work under the supervision of more experienced developers and assist in developing applications, debugging issues, and learning best practices in software development. Their responsibilities often include understanding project requirements, writing clean code, and collaborating with team members to deliver high-quality software solutions. This role is ideal for individuals who have foundational knowledge of Java and are looking to gain professional experience in the field.

What types of projects or tasks can a junior Java programmer expect to work on in their first year?

As a Junior Java Programmer, you can expect to work on a variety of tasks such as debugging existing code, writing unit tests, developing small features, and assisting with backend development on larger projects. You'll often collaborate closely with senior developers and participate in code reviews to learn best practices. Many organizations assign juniors to maintenance tasks or simpler modules at first, gradually increasing responsibility as you build confidence and technical skills. This hands-on experience is invaluable for understanding software development workflows and improving your coding abilities.

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

To thrive as a Junior Java Programmer, you need a solid understanding of Java programming, object-oriented concepts, and a relevant degree or coursework in computer science. Familiarity with development environments like Eclipse or IntelliJ IDEA, version control systems such as Git, and basic knowledge of databases are typically required. Strong problem-solving skills, attention to detail, and the ability to communicate effectively within a team are important soft skills. These competencies are crucial for delivering clean, maintainable code and collaborating efficiently on software projects.

What is the difference between Junior Java Programmer vs Java Developer?

AspectJunior Java ProgrammerJava Developer
Required CredentialsBasic Java certifications, some programming experienceAdvanced Java certifications, multiple years of experience
Work EnvironmentEntry-level projects, supervised tasksDesign, develop, and maintain complex applications
Employer & Industry UsageTech companies, startups, IT departmentsSoftware firms, enterprise solutions, large-scale projects

While Junior Java Programmers focus on learning and executing basic Java tasks under supervision, Java Developers handle more complex development responsibilities, including designing and implementing software solutions. The roles differ mainly in experience level and scope of work, but both require a solid understanding of Java programming.

What are the most commonly searched types of Java Programmer jobs in Ontario?

The most popular types of Java Programmer jobs in Ontario are:

What cities in Ontario are hiring for Junior Java Programmer jobs?

Cities in Ontario with the most Junior Java Programmer job openings:

Infographic showing various Junior Java Programmer job openings in Ontario as of August 2026, with employment types broken down into 79% Full Time, 12% Part Time, and 9% Contract. Highlights an 82% Physical, 6% Hybrid, and 12% Remote job distribution.

Senior Software Engineer (Java/AI)

Mississauga, ON • On-site

Citi
Banking and Credit Intermediation • 5 - 10K employees

CA$94K - CA$141K/yr

Full-time

This job post has expired 3 days ago. Applications are no longer accepted.


Key responsibilities

  • Design, develop, and deploy enterprise-scale applications using Java, Spring, and Kafka.

  • Collaborate within an Agile framework to manage workflows and ensure timely delivery.

  • Contribute to the DevOps culture by working with containerization and orchestration technologies like Kubernetes.


Citibank rating

8.4

Company rating: 8.4 out of 10

Based on 179 frontline employees who took The Breakroom Quiz

39th of 176 rated banks


Job description

The Opportunity Are you ready to build the future of financial technology. We are looking for a passionate and talented Senior Software Engineer to join our high-performing team. This isn't just another development role; it's a chance to work with cutting-edge technologies like AI and Kafka to solve complex challenges that have a direct and significant impact on our business.

If you thrive in a collaborative environment and are driven to build scalable, resilient, and intelligent applications, we want to hear from you. What You'll Do Design, develop, and deploy robust, enterprise-scale applications using Java, Spring, and Kafka. Build intuitive and responsive user interfaces with modern frameworks like Angular and React.js

Leverage AI and Machine Learning to create innovative features and drive intelligent automation. Work with diverse data persistence technologies, including MongoDB and Oracle, to manage complex data landscapes. Champion best practices in software development, including writing clean, testable code with JUnit and participating in rigorous code reviews.

Collaborate within an Agile framework using tools like Jira to manage workflows and ensure timely delivery. Contribute to our DevOps culture by working with containerization and orchestration technologies like Kubernetes. Serve as a subject matter expert, mentoring junior engineers and providing technical guidance to senior stakeholders.

What You'll Bring Required Experience: 5-8 years of professional experience in software development. Strong proficiency in Java, Spring, Spring Boot and its ecosystem. Hands-on experience with data streaming technologies, specifically Kafka.

Experience with NoSQL databases like MongoDB and relational databases like Oracle. Familiarity with frontend development using Angular. A foundational understanding of Artificial Intelligence (AI) concepts and their application.

Proven ability to work under pressure and manage deadlines effectively. Preferred Experience: Expertise with the Java 17+, Spring and Spring Boot Framework, Reactive Programming. Experience with Python for scripting.

Knowledge of containerization and orchestration with Kubernetes. Experience building with Angular and React.js. Proficiency with testing frameworks like JUnit

Familiarity with Atlassian tools, particularly Jira. Why Join Our Team. Exceptional Learning Opportunities: Continuously grow your skills with access to challenging projects and the latest technologies.

Impactful Work: See your contributions directly influence our business and customers on a global scale. High-Performing Team Culture: Collaborate with a supportive, and talented team that values innovation and quality. Commitment to Work-Life Balance: We believe in sustainable performance and provide the flexibility you need to thrive both in and out of the office.

Education Bachelor's degree/University degree in Computer Science, Engineering, or a related field, or equivalent experience. Our Commitment to Risk and Control Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency. ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Primary Location Full Time Salary Range: $94,300.00 - $141,500.00 ------------------------------------------------------ Most Relevant Skills Please see the requirements listed above

------------------------------------------------------ Other Relevant Skills For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ Automated Processing and AI We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

------------------------------------------------------ This job opening is for an existing job vacancy. ------------------------------------------------------ Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi's EEO Policy Statement and the Know Your Rights poster.


What Citibank employees say

Pay

Benefits

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Citigroup Inc logo

About Citigroup Inc

Sourced by ZipRecruiter

We live in an increasingly complex world. Companies these days are either born global or are going global at record speed. Business and geopolitics are forging an entirely new dynamic and consumers now expect financial services to be a seamless part of their digital lives. Citi is a bank that’s uniquely positioned for this moment. Through our vast global network and our on-the-ground expertise, we can connect the dots, anticipate change and empathize the needs of our clients and customers in ways that other banks simply cannot. Citi's mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. We have set expectations for how we must act to bring our mission to life. These expectations are at the heart of our Leadership Principles – we take ownership, we deliver with pride and we succeed together.

Industry

Banking and credit intermediation

Company size

5,001 - 10,000 Employees

Headquarters location

New York City, NY, US