Oakville, On Stack java engineer Jobs – 45 Openings This Week

Senior Java Developer
Virtusa —Mississauga, ON
- Azure
- Computer Science
- Software troubleshooting
5d
Applications Development Senior Manager
Citi —Mississauga, ON
- $120,800–$170,800 a year
- Full-time
- Hybrid work
- Management
- Java
- Master's degree
Chief Software Engineering Architect
DataStealth —Mississauga, ON
- Full-time
- Hybrid work
- Azure
- Management
- Java
Quick apply
Senior Big Data Developer - Vice President
Citi —Mississauga, ON
- $120,800 a year
- Full-time
- Hybrid work
- Oracle
- Management
- Sales

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Senior Software Engineer
Caspian One —Toronto, ON
Act as a senior technical contributor through *code reviews, knowledge sharing, and technical leadership*. Work hands‑on across the mobile stack, including *…
Up to $160,000 a year
Quick apply
Senior Back-End Engineer
LotusFlare —Toronto, ON
DNO Cloud enables communication service providers to innovate freely, reduce operational costs, monetize network assets, engage customers on all digital…

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Senior Java Developer

Virtusa -
Mississauga, ON

Apply Now

Job details

5 days ago

Qualifications

Spring Boot
Authentication
Performance tuning
Software engineering
Azure
Computer Science
Cassandra
Container orchestration
Software troubleshooting
RESTful API
Enterprise software
Engineering
System design
NoSQL
Maintenance
Git
Google Cloud Platform
MongoDB
Microservices
SQL
OOP
AWS
Docker
Bachelor's
Continuous improvement
PostgreSQL
RabbitMQ
Back-end development
Mentoring
Scrum
Kafka
DynamoDB
Cross-functional collaboration
Software development or architecture experience
Communication skills
Software architecture
Cross-functional communication
MySQL
Design patterns

Full job description

We are seeking a highly skilled Senior Java Engineer to design, develop, and maintain scalable, high-performance enterprise applications. The ideal candidate will have deep expertise in Java and modern backend / frontend technologies, a strong understanding of system design, and the ability to mentor junior engineers while collaborating with cross-functional teams. Key Responsibilities Design, develop, test, and maintain high-quality Java applications and services Lead technical design discussions and contribute to architectural decisions Build and optimize RESTful APIs, microservices, and backend systems Ensure application performance, scalability, reliability, and security Write clean, maintainable, and well-documented code following best practices Conduct code reviews and provide constructive feedback to team members Mentor junior engineers and support team knowledge sharing Collaborate with product managers, QA, DevOps, and other stakeholders Troubleshoot complex technical issues in development and production environments Participate in Agile/Scrum ceremonies and contribute to continuous improvement Required Qualifications Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience) 7+ years of professional experience in software development Strong proficiency in Java (Java 17+) Experience with Spring / Spring Boot Solid understanding of object-oriented design, design patterns, and SOLID principles Experience building RESTful APIs and backend services Strong knowledge of SQL and relational databases (e.g., PostgreSQL, Oracle, MySQL) Familiarity with Git and modern CI/CD pipelines Experience working in Agile development environments Excellent problem-solving, communication, and collaboration skills Preferred Qualifications Experience with microservices architecture Exposure to cloud platforms (AWS, Azure, or GCP) Experience with containers and orchestration (Docker, Kubernetes) Knowledge of message queues / streaming platforms (Kafka, RabbitMQ) Familiarity with NoSQL databases (MongoDB, DynamoDB, Cassandra) Understanding of security best practices and authentication (OAuth2, JWT) Experience supporting high-availability or mission-critical systems

Key Job Details

Primary Location

Mississauga, Ontario, Canada

Job Type

Experienced

Required Experience

Skill

DE-Full Stack, REST API, ORM, SQL.

Travel

Date Posted

17/07/2026

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stack java engineer jobs in oakville, on

Senior Java Developer

Applications Development Senior Manager

Chief Software Engineering Architect

Senior Big Data Developer - Vice President

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