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Added 1 min ago
HR
Quality Assurance Intern (Winter 2027, 12months)
Hitachi Rail
Toronto, ON
- $23 to $30 CAD / hour
- Full-time
A chance to build your career with a global leader driving digital transformation and innovation that helps support sustainable future
Added 1 min ago
BA
People & Culture Specialist
Breakthrough Academy
Vancouver, BC
- Contract
…handle something yourself versus when to bring in the right leader or external…
Added 1 min ago
CG
Site Superintendent
Con-Tech General Contractors
SK · Saskatchewan, Canada
- Full-time
…schedule and budget. This individual will work closely with the Project Manager and fulfill an integral role on the…
Added 1 min ago
BU
10053 - Brand Manager Barcel Canada
Barcel USA
ON · Ontario, Canada
- Full-time
…action, exercising sound judgment when providing direction to project…
Added 1 min ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
…leading edge of technology, remain nimble even as a global leader, and create technology that helps our clients further enhance their business. We are a values-driven organization, and our…
Added 1 min ago
BS
Marketing & Biomedical Communications Associate
Boston Scientific
Mississauga, ON
- Full-time
Independent, self-motivated, and results-oriented team player with a positive attitude and the ability to reliably meet deadlines and project objectives
Added 1 min ago
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Research Manager
hireVouch
Toronto, ON
- $120,000 to $150,000 CAD / year
- Full-time
Our client is a global analytics leader who is looking for a Research Manager to join their team dedicated to supporting external clients with strategic consumer insights and industry…
Added 1 min ago
PW
Volunteer Fundraising and Crowdfunding Lead
Planet Watch
Ottawa, ON
- Full-time
…action. As we grow, we’re looking for a strategic fundraising leader to build our funding roadmap and guide a small team of volunteer…
Added 16 mins ago
NI
Mechanical Engineering Co-op Student
Nanometrics Inc
Ottawa, ON
- $28 to $30 CAD / hour
Global Leader: Join a Canada's Best Managed Companies Platinum Club winner and a global leader in seismic solutions.
Added 16 mins ago
IT Business Analyst (On Call)
Okanagan College
Kelowna, BC
Under the general direction of the Manager of Software & Enterprise Systems, the IT Agile Project Coordinator plays a key role in coordinating a variety of technology initiatives that…
Added 18 mins ago
TC
Supervisor, Middle Office
The Citco Group Limited
Toronto, ON
- Full-time
Citco is a global leader in fund services, corporate governance and related asset services with staff across 50 office locations worldwide. With more than $1.8 trillion in assets under…
Added 31 mins ago
MEP Coordinator
Pomerleau
Burnaby, BC
Jump onboard and join our collaborative project team to assume the coordination of mechanical and electrical (M&E) project activities. With a proven track record of mechanical and…
Added 31 mins ago
T
Software Engineer II (Java/Spring)
TD
Toronto, ON
- Full-time
…engineering related architecture designs associated with a program or…
Added 31 mins ago
T
Bus Mgmt Specialist
TD
Toronto, ON
- Full-time
…faster banking experience. TD is deeply committed to being a leader in client experience, that is why we believe that all colleagues, no matter where they work, are client facing. Together,…
Added 31 mins ago
T
Sr. Manager, Business Management
TD
Toronto, ON
- Full-time
Added 31 mins ago
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Creative Practice Manager
TD
Toronto, ON
- Full-time
…provides strategic advice, expert creative guidance, proficient project management and flawless execution. They ensure a holistic view of the overall communications strategy, creative…
Added 31 mins ago
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Governance & Control Specialist, Corporate and Public Affairs (CAPA)
TD
Toronto, ON
- Full-time
Knowledge of project delivery methodologies, including TD Scaled Agile.
Added 31 mins ago
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Spécialiste principal(e), Services médicaux / Senior Specialist, Medical Services
MSD
Kirkland, QC
- Full-time
Added 31 mins ago
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General Application - Engineering & Technical Professional / Candidature spontanée – Ingénieurs et professionnels techniques
Sense Engineering
Canada
- Full-time
…a student, early-career professional, technical specialist, project manager, or industry leader, we'd love to hear from…
Added 31 mins ago
QD
Assistant Site Superintendent, StreetSide Edmonton
Qualico Developments Canada Ltd.
Edmonton, AB
- Full-time
Assisting in monitoring the project progress and schedules. Completing regular progress reports, checklists, logbook entries and other reports.
Added 31 mins ago
C
Signal and Power Integrity Engineer - New Grad
Ciena
Ottawa, ON
- $75,100 to $119,900 CAD / year
- Full-time
As the global leader in high-speed connectivity, Ciena builds the critical infrastructure powering the AI era. We’re a technology company shaping the future of networking, guided by…
Added 31 mins ago
Principal Engineer, Mechanical Systems & Equipment
Westinghouse Electric Company, LLC
Kitchener, ON
Coordinate engineering activities across design, testing, licencing, procurement, and multidisciplinary project teams to ensure you achieve technical and project goals.
Added 31 mins ago
Senior Engineer - Mechanical Systems and Equipment
Westinghouse Electric Company, LLC
Kitchener, ON
…leaders, teams and culture. This commitment separates us as a leader in our industry and differentiates from our competition. You will work closely with global leaders who will support your…
Added 31 mins ago
S
Senior Project Controls Specialist, Planning & Scheduling
Stantec
Burnaby, BC
- Full-time
…award-winning program management team and bring transformational project solutions to…
Added 31 mins ago
Learning Leader, EY-Parthenon Canada (18-month contract)
EY
Winnipeg, MB · Toronto, ON · Saskatoon, SK · Halifax, NS · St. John's, NL · Saint John, NB · London, ON · Vancouver, BC · Victoria, BC · Edmonton, AB · Ottawa, ON · Dieppe, NB · ON · AB · Calgary, AB · Waterloo, ON
The EY-P Learning Leader is responsible for shaping and executing the learning and capability-building strategy for the Canadian EY-P Canada practice. The role oversees learning across the…

Dexian

Java Software Engineer

Mississauga, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 5, 2026
Experience: Experience: 8+ years of professional experience in application development or systems analysis, with a heavy emphasis on Java-based backend architectures.
Posting language: English
Posted: Oct 6, 2026

Original job description

Java Developer

Mississauga ON – 3days/week onsite

Contract to Hire – 2 rounds interview first virtual second onsite in Mississauga

Position Overview

We are seeking a highly skilled and passionate Senior Java Backend Developer to join our engineering team as a Senior Individual Contributor. In this role, you will be responsible for designing, building, and optimizing high-performance, robust, and scalable backend applications specialized in batch and real-time data processing.

As a senior technical leader with a strong programming background, you will drive the architecture and implementation of complex distributed systems. You will play a crucial role in analyzing system requirements, designing data flows, and ensuring clean, maintainable, and highly efficient code. This role demands deep technical expertise in Core Java, concurrency, memory management, and modern distributed data frameworks, without the burden of people management responsibilities.

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Key Responsibilities

Systems Analysis & Architecture: Analyze complex business requirements and translate them into highly scalable, reliable, and secure backend systems designs. Evaluate trade-offs between different data architecture patterns (e.g., microservices vs. event-driven).
Hands-on Programming: Write high-quality, production-ready, and performant Java code. Leverage advanced software engineering principles such as Object-Oriented Programming (OOP), SOLID design principles, and design patterns.
Technical Project Delivery: Lead the technical implementation and delivery of critical, complex backend and data-processing initiatives. Partner with cross-functional teams to ensure successful project deployment from conception through production.
Subject Matter Expertise (SME): Act as the resident Subject Matter Expert (SME) in high-throughput data processing, stream processing, or JVM performance tuning. Provide guidance on industry best practices and emerging backend technologies.
Performance Optimization: Diagnose, profile, and resolve complex performance bottlenecks, memory leaks, and concurrency issues in high-volume distributed environments.
Quality Assurance & Best Practices: Champion code quality through Test-Driven Development (TDD), comprehensive unit/integration testing, and rigid code review standards.
Mentorship: Provide technical mentorship and architectural guidance to other engineers on the team, fostering a culture of technical excellence and clean code.

Technical Skills & Qualifications

Required Qualifications:

Experience: 8+ years of professional experience in application development or systems analysis, with a heavy emphasis on Java-based backend architectures.
Core Java Mastery: Deep, expert-level understanding of Core Java (Java 11/17/21), including advanced multithreading, concurrency models, Java memory model (JVM garbage collection, heap analysis), and Collections API.
Data Processing & Streaming: Extensive hands-on experience building distributed data processing systems, ETL pipelines, and real-time streaming architectures using tools like Apache Kafka, Apache Spark, Flink, or Hadoop.
Framework Expertise: Strong experience with the Spring Ecosystem (Spring Boot, Spring Cloud, Spring Data, Spring Security) and ORM frameworks (Hibernate/JPA).
Database Management: Proficiency in designing schemas and writing optimized queries for both relational databases (e.g., PostgreSQL, MySQL, Oracle) and NoSQL stores (e.g., Cassandra, MongoDB, Redis).
Distributed Systems: Comprehensive understanding of distributed system design patterns, consensus protocols, caching strategies, and API design (RESTful APIs, gRPC).
CI/CD & DevOps: Practical experience with containerization (Docker, Kubernetes), continuous integration/continuous deployment tools (Jenkins, GitLab CI, or GitHub Actions), and infrastructure-as-code principles.
Testing: Strong advocate for testing frameworks such as JUnit, Mockito, and integration testing tools.

Preferred Qualifications:

Experience with cloud platforms (AWS, Azure, or GCP), specifically managed database and container services.
Experience in financial services, banking technology, or large-scale enterprise transaction systems.

Familiarity with Unix/Linux environments, shell scripting, and network configurations.

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More about this job

Responsibilities

Design, build, and optimize scalable Java backend systems for batch and real-time data processing, including leading delivery of complex distributed-system initiatives. Diagnose performance, memory, and concurrency issues; uphold testing and code-quality practices; and provide technical mentorship to fellow engineers.

Requirements

Requires 8+ years of application development or systems analysis experience, with expert-level Core Java and hands-on experience in distributed data processing, streaming, Spring, databases, and distributed systems. Also requires practical experience with containerization, CI/CD, and testing; cloud platforms and financial-services experience are preferred.

Skills

Core Java
Multithreading And Concurrency
JVM Performance Tuning
Apache Kafka
Apache Spark
Apache Flink
Spring Boot
Spring Cloud
Hibernate And JPA
Relational And NoSQL Databases
Distributed Systems
RESTful APIs And gRPC
Docker And Kubernetes
CI/CD
JUnit And Mockito
Test-Driven Development

Visa sponsorship

Not detected in the job text

Keywords

Java
Java 11/17/21
Object-Oriented Programming
SOLID Principles
Design Patterns
Multithreading
Java Memory Model
Garbage Collection
ETL Pipelines
Real-Time Streaming
Apache Kafka
Apache Spark
Apache Flink
Hadoop
Spring Boot
Spring Cloud
Spring Data
Spring Security
Hibernate
JPA
PostgreSQL
MySQL
Oracle
Cassandra
MongoDB
Redis
Distributed Systems
RESTful APIs
gRPC
Docker

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