Toronto, On Backend java developer Jobs – 103 Openings This Week

Senior Java Full Stack Developer
Staffmax —Mississauga, ON
- $110,000–$120,000 a year
- Computer Science
- DevOps
- Engineering
Quick apply
9h
Backend Java Developer, Assistant Vice President
Citi —Mississauga, ON
- $94,300–$141,500 a year
- Full-time
- Hybrid work
- Oracle
- Computer Science
- DevOps
7h

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Backend Java Developer, Assistant Vice President
Citi —Mississauga, ON
Conduct tasks related to feasibility studies, time and cost estimates, IT planning, risk technology, applications development, model development, and establish…
$94,300–$141,500 a year
7h
Java Full Stack Programmer Analyst Assistant Vice President
Citi —Mississauga, ON
Collaborate across engineering, product, and design teams to define technical requirements, develop solution strategies, and deliver software that meets…
$94,300–$141,500 a year

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Java Developer
Scotiabank —Toronto, ON
Work with architecture groups on design proposals, development, and maintenance of applications. Strong front-end development skills with Struts, JSP, HTML5,…

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Senior Java Full Stack Developer

Staffmax -
Mississauga, ON

Quick apply

Job details

Permanent
$110,000–$120,000 a year
9 hours ago

Qualifications

Spring Boot
CI/CD
Computer Science
Software Engineering
Kubernetes
DevOps
Engineering
Test automation
Test-driven development
MongoDB
Java
Application development
Microservices
SQL
Docker
Bachelor's
Distributed systems
REST
Scrum
APIs
Agile
Kafka
Unit testing
Multithreading
PL/SQL
Communication skills
Debugging

Full job description

Location: Mississauga, ON (Hybrid)

Salary: CAD $110,000 – $120,000

Job Summary

We are seeking a Senior Java Full Stack Developer to design and build scalable, high-performance applications supporting regulatory platforms. The ideal candidate will have strong expertise in Java 11+, Spring Boot, Microservices, Kafka, MongoDB, SQL/PLSQL, and modern cloud-native development practices. This role involves developing resilient distributed systems, implementing event-driven architectures, and contributing to engineering excellence through Agile and DevOps methodologies.

Key Responsibilities

Design, develop, and maintain scalable Java 11+ microservices and full-stack applications.
Build high-performance backend services using Spring Boot, REST APIs, and event-driven architecture.
Implement Kafka producers, consumers, and topics for reliable asynchronous processing.
Develop and maintain UI and API layers while integrating with downstream services.
Apply multithreading and concurrency concepts to improve application performance and throughput.
Design and optimize data persistence using MongoDB and SQL/PLSQL.
Improve application observability using ELK and centralized logging solutions.
Support containerized deployments using Docker, OpenShift, or similar platforms.
Monitor production systems, perform root cause analysis, troubleshoot issues, and implement permanent fixes.
Follow clean coding principles, design patterns, and software engineering best practices.
Participate in code reviews and contribute to architecture and technical design discussions.
Collaborate with cross-functional teams including architects, DevOps engineers, QA, and product owners.
Mentor junior developers and promote engineering excellence within the team.

Required Qualifications

Bachelor's degree in Computer Science, Software Engineering, or a related field.
7+ years of experience in Java application development.
Strong experience with Java 11+, Spring Boot, and Microservices architecture.
Hands-on experience with Apache Kafka and event-driven systems.
Strong knowledge of MongoDB and SQL/PLSQL.
Experience with RESTful API development and distributed systems.
Experience with multithreading and concurrent programming.
Familiarity with Docker, OpenShift, Kubernetes, or similar container platforms.
Experience with ELK Stack or centralized logging and monitoring tools.
Strong debugging, troubleshooting, and production support experience.
Experience working in Agile/Scrum environments.
Excellent communication and collaboration skills.

Preferred Qualifications

Experience building low-latency, high-availability transactional systems.
Knowledge of distributed caching technologies.
Experience with CI/CD pipelines and DevOps practices.
Hands-on experience with TDD, BDD, unit testing, and automated testing frameworks.
Knowledge of secure coding practices and application security.
Experience mentoring developers and leading technical initiatives.
Exposure to Fixed Income products and regulatory reporting is considered a strong asset.

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