1

Intern Java Back End Developer Jobs in Toronto, ON

A Java Developer designs, develops, tests, and maintains scalable Java-based applications (web ... Build new and enhance existing Java applications, including back-end services, APIs (RESTful), and ...

Actively work to improve the developer process and experience in all phases from coding to ... Experience in Python, Java, C++, or Go or another language and a willingness to learn * Experience ...

Commercial Banking Engineering is seeking a skilled Java Developer with extensive experience in ... The ideal candidate will have a strong foundation in both front-end and back-end technologies, with ...

Senior Backend Software Engineer

Toronto, ON · On-site +1

CA$100K - CA$180K/yr

Solid background in backend software engineering and delivering production-ready systems. - Proven experience designing object oriented software with languages such as C#, Java, C++, Golang, Rust ...

Senior Backend Engineer

Toronto, ON · On-site

CA$140K - CA$180K/yr

Develop and maintain RESTful APIs using Java (Spring Boot or related web frameworks) or Python ... Collaborate with Product, QA, and DevOps teams to deliver reliable and scalable features * Write ...

Proficiency in Python or other languages (Go, Java, C++). * Strong written and verbal communication ... Prior work supporting internal platforms or developer-facing tools. #LI-Hybrid Benefits & Perks: As ...

Showing results 41-60

Intern Java Back End Developer information

What does an intern Java back end developer do?

An Intern Java Back End Developer assists in designing, developing, and maintaining the server-side logic of web applications using the Java programming language. They typically work under the guidance of senior developers to write clean, efficient code, troubleshoot bugs, and learn about frameworks like Spring Boot or Hibernate. Interns may also participate in code reviews, testing, and collaborating with front-end developers to integrate user-facing elements with server-side logic. This role helps interns gain hands-on experience in building scalable and secure back-end systems.

What types of projects and responsibilities can an intern Java back end developer expect during their internship?

As an Intern Java Back End Developer, you can typically expect to work on tasks such as writing and testing server-side code, assisting with database integration, and supporting the development of RESTful APIs. You'll likely collaborate closely with senior developers and other interns during code reviews, debugging sessions, and team meetings. Interns may also be assigned to real-world projects where they can contribute to feature enhancements or bug fixes under supervision, providing valuable hands-on experience in a collaborative, agile environment.

What are the key skills and qualifications needed to thrive as an intern Java back end developer, and why are they important?

To thrive as an Intern Java Back End Developer, you need a solid understanding of Java, object-oriented programming, and database fundamentals, often backed by coursework in computer science or related fields. Familiarity with development tools such as Git, IDEs like IntelliJ or Eclipse, and frameworks like Spring Boot is commonly expected. Strong problem-solving abilities, eagerness to learn, and effective communication skills help you collaborate with team members and adapt quickly. These skills and qualities are crucial for building reliable server-side applications and integrating effectively into a professional development environment.

What is the difference between Intern Java Back End Developer vs Intern Front End Developer?

AspectIntern Java Back End DeveloperIntern Front End Developer
Required SkillsJava, Spring, SQL, REST APIsHTML, CSS, JavaScript, React or Angular
Work EnvironmentServer-side development, database integrationClient-side interface, UI/UX design
Common Industry UsageBackend systems, enterprise applicationsWebsites, mobile app interfaces

Intern Java Back End Developers focus on server-side logic, database management, and API development, while Intern Front End Developers work on the visual and interactive aspects of websites and applications. Both roles often require programming skills and are used in web development environments, but they specialize in different parts of the software stack.

What are the most commonly searched types of Java Back End Developer jobs in Toronto, ON?

The most popular types of Java Back End Developer jobs in Toronto, ON are:

Infographic showing various Intern Java Back End Developer job openings in Toronto, ON as of July 2026, with employment types broken down into 100% Full Time. Highlights an 50% In-person, and 50% Remote job distribution.

Application Development Technical Lead Analyst Developer Vice President Conversion

Citi

Mississauga, ON

CA$120K - CA$170K/yr

Full-time

Posted yesterday

New


Citibank rating

8.3

Company rating: 8.3 out of 10

Based on 177 frontline employees who took The Breakroom Quiz

39th of 171 rated banks


Job description

Fixed Income eTrading Tech Overview

The evolution of electronic trading and automation has changed the way that Fixed Income products trade forever; driving a need for real-time, low latency pricing, market making and risk technology.  In this increasingly electronic and competitive landscape, Citi is key player due to its leading eTrading platform and investment in technology.  The Fixed Income eTrading team is at the forefront, by building high-performance low latency technology that supports the execution of billions of dollars of client trades every day.   Our competitive advantage is our technology and having a platform that provides exceptional and dependable trading experience.  If you have this kind of vision, capable of seeing ahead, of developing a clear path forward in a quest to try the as yet untried, here is the opportunity.

Job Purpose:

Within Citi's Fixed Income eTrading organization, the Post Trade Feed/Straight Through Processing (STP) team is responsible for ensuring the efficient and accurate flow of financial transaction data from execution to settlement. This involves managing and optimizing automated processes that capture, validate, enrich, and transmit trade details across various internal systems and external market participants. Key responsibilities include monitoring trade feeds for completeness and accuracy, identifying and resolving exceptions or breaks in the STP workflow, and collaborating with front office, middle office, and back office teams to enhance process efficiency and reduce operational risk. The team plays a crucial role in maintaining data integrity, improving processing speed, and supporting regulatory compliance by ensuring timely and precise post-trade operations for Fixed Income eTrading activities.

This is a dedicated Java backend development team. Members are responsible for designing, building, and maintaining robust and scalable backend systems and services that power the Post Trade Feed/STP processes. This includes developing high-performance Java applications for trade capture, data validation, enrichment, and communication with various internal and external systems. The role involves continuous code optimization, implementing sophisticated logic for exception handling, ensuring system resilience, and leveraging modern Java frameworks and technologies to deliver cutting-edge solutions for the Fixed Income eTrading business.

Required:

  • 5+ years of strong hands-on development experience using Java including expertise with Spring or another dependency injection framework
  • 5+ years’ experience in developing and maintaining highly scalable, real-time, low latency, high-volume, scalable microservices
  • 5+ years’ experience with Java 8+, Mongo and Oracle DB, OpenShift, Linux and Solace
  • 3+ years experience with real-time messaging middleware (Kafka, RabbitMQ, Solace, Tibco, …)
  • Experience working with multi-threaded applications
  • Strong software development fundamentals, data structures, design patterns, Object-Oriented programming, architecture, algorithms, and problem-solving skills
  • Application deployment and debugging of applications on UNIX/LINUX

Nice to Have:

  • Understanding of capital markets and financial derivatives (rates or other)
  • Experience with system performance tuning and low latency Java programming
  • Hands-on experience in database technologies, including RDBMS (Oracle, …) and No SQL (MongoDB)
  • Experience with In-Memory Datastore/Cache libraries (Redis, Apache Ignite, Gemfire, …)
  • Experience with CI/CD pipelines
  • Test-driven development, including Unit and End-to-End Testing.

Education:

Bachelor Degree in Computer Science, Computer Engineering, Information Systems or equivalent work experience

------------------------------------------------------

Job Family Group: Technology

------------------------------------------------------

Job Family:Applications Development

------------------------------------------------------

Time Type:Full time

------------------------------------------------------

Primary Location Full Time Salary Range:$120,800.00 - $170,800.00

------------------------------------------------------

Most Relevant Skills Please see the requirements listed above.

------------------------------------------------------

Other Relevant Skills Cloud Software, Development Software, Java (Programming Language), Java Spring, Linux, MongoDB, Oracle, Red Hat OpenShift.

------------------------------------------------------

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

Hours and flexibility

Workplace

Get the full story on Breakroom


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