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Added 9 mins ago
TT
Sales Development Representative
trane technologies
Montreal, QC
- Full-time
…BrainBox AI, Nuvolo, and more - combines technical expertise with advanced analytics to create data-driven solutions that add real value for customers, communities, and the planet. Whether…
Added 9 mins ago
MG
Principal Engineer / Architect
Matrix Global
Toronto, ON
- Full-time
We are seeking a highly skilled and hands-on Principal Engineer / Architect to lead the architecture, design, and delivery of next-generation cloud-native data and application platforms.…
Added 9 mins ago
MG
Java Engineer
Matrix Global
Toronto, ON
- Full-time
We are seeking a talented and motivated Java Engineer with strong experience in the Microsoft Azure ecosystem to join our growing engineering team. In this role, you will be responsible for…
Added 1 hour ago
JE
Intermediate Electrical Engineer
Juno Engineering Canada Inc.
Calgary, AB
- Full-time
Are you a professional engineer with a passion for innovation in electrical, instrumentation, and controls engineering? Juno Engineering Canada Inc. is seeking an Intermediate Electrical…
Added 1 hour ago
JE
Senior Electrical Substation Engineer
Juno Engineering Canada Inc.
Calgary, AB
- Full-time
Are you a senior professional engineer with deep expertise in high-voltage substation equipment design and technical leadership? Juno Engineering Canada Inc. is seeking a Senior Electrical…
Added 1 hour ago
JE
Senior Instrumentation Engineer
Juno Engineering Canada Inc.
Calgary, AB
- Full-time
Are you ready to design and deliver the instrumentation systems that power Canada’s industrial future? Join Juno Engineering Canada as a Senior Instrumentation Engineer and take the next…
Added 1 hour ago
JE
Intermediate Electrical Substation Engineer
Juno Engineering Canada Inc.
Calgary, AB
- Full-time
Are you a professional electrical engineer with a passion for high-voltage substation design? Juno Engineering Canada Inc. is seeking an Intermediate Electrical Substation Engineer to…
Added 1 hour ago
UK
Utilities Engineer
Utilities Kingston
Kingston, ON
- Full-time
The Utilities Engineer leads the delivery of multi‑disciplinary capital projects within the water and wastewater utilities, including planning, design, and contract administration. The role…
Added 1 hour ago
JE
Senior Electrical Engineer
Juno Engineering Canada Inc.
Calgary, AB
- Full-time
…sustainable progress across power generation, renewable energy, and advanced industrial projects. With over 40 years of engineering excellence, we foster a collaborative, forward-thinking…
Added 1 hour ago
AE
Water Treatment Operations Technician
Associated Engineering
Calgary, AB
- Full-time
The successful candidate will play a key role in ensuring new and upgraded water treatment systems transition safely and effectively from construction to full operation while also providing…
Added 2 hours ago
ES
Platform Engineer - AI/ML Infrastructure
Epsilon Solutions Ltd.
Toronto, ON
- Full-time
Were seeking a skilled Platform Engineer to deploy and manage our AI/ML infrastructure, e.g LlamaIndex Cloud and KDB.AI applications on Kubernetes Platform.
Added 2 hours ago
I(
Mechanical & Structural Design Engineer
ITPS (Canada) LTD
London, ON
- $72,000 to $85,000 CAD / year
- Full-time
The Mechanical & Structural Design Engineer is responsible for the design, development, and analysis of airframe components and systems integrations for aircraft modification projects. This…
Added 2 hours ago
C
Officer Training & Development-CA
CN
Hornepayne, ON
- Full-time
Experience working as a Conductor, Locomotive Engineer, Rail Traffic Controller or a combination of the above
Added 2 hours ago
Procurement Engineer Coordinator
PCL Construction
Edmonton, AB
As a Procurement Engineer Coordinator for PCL Industrial Constructors Inc. in Edmonton, Alberta (Industrial), you'll have the opportunity to assists project manager(s) with overall…
Added 3 hours ago
AP
Business Intelligence Engineer
Arobas Personnel
Toronto, ON
- Full-time
Arobas Personnel is seeking a Business Intelligence Engineer for a mandate with one of its clients located in Toronto.
Added 3 hours ago
AP
Senior Business Intelligence Engineer
Arobas Personnel
Toronto, ON
- Full-time
Arobas Personnel is seeking a Senior Business Intelligence Engineer for a mandate with one of its clients located in Toronto.
Added 3 hours ago
BS
Tech Transformation - Application Network Engineer
Brainhunter Systems Ltd
Toronto, ON
- Contract
Role Title: Tech Transformation - Application Network Engineer
Added 3 hours ago
I
Custom IC Layout Engineer
Inpho
Ottawa, ON · Kanata, ON
- Full-time
Company Description Inpho is dedicated to leading the world in photonic chips for computing, focusing on advanced optical solutions that deliver low latency, high bandwidth, power…
Added 3 hours ago
P&
Architecte de données / Data Architect
Pratt & Whitney
Longueuil, QC
- Full-time
Added 3 hours ago
AU
Academic Coordinator, Architecture
Athabasca University
Canada
- Part-time
A Master's or PhD degree in architecture, engineering or a related field is required. A license as an architect or engineer would be an asset. Demonstrated expertise in topics related to…
Added 3 hours ago
HD
Databricks Engineer
Hire DigITalent Inc.
Toronto, ON · Greater Toronto Area, Canada
- $90 to $110 CAD / hour
- Contract
…and promotions. The project team needs a seasoned Senior Data Engineer to help lead the charge, stabilize key deliverables, and guide our technical strategy. This is a critical engagement…
Added 3 hours ago
C
Bldg Engineer
CBRE
AB · Edmonton, AB
- Full-time
As a CBRE Building Engineer, you will be responsible for monitoring, maintaining and repairing building system operations and the performance of various areas including plumbing,…
Added 3 hours ago
Aircraft Maintenance Engineer Apprentice
Keewatin Air LP
Winnipeg, MB
…choice for air medical transport in the Canadian Arctic. Our advanced fleet, equipped with cutting-edge medical technology, delivers critical care in the most remote and challenging…
Added 3 hours ago
I(
Senior Aeronautical Structural Engineer
ITPS (Canada) LTD
London, ON
- Full-time
ITPS Canada is seeking an experienced Senior Aeronautical Structural Engineer to support the design, development, modification, and certification of aircraft and airborne systems across a…
Added 3 hours ago
N
Staff Optical Engineer
Nokia
Ottawa, ON · Kanata, ON
- Full-time
As a Staff Optical Design Verification Test (ODVT) Engineer, you will lead the comprehensive testing, validation, and performance characterization of the next generation of coherent…

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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