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Added 4 days ago
NG
Artificial Intelligence Management Consultant
NCS Group
Toronto, ON
- Full-time
Master’s degree in Business, Engineering, Computer Science, Information Systems, or a related discipline
Added 4 days ago
D
Java Software Engineer
Dexian
Mississauga, ON
- Contract
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…
Added 4 days ago
RE
Electrical Engineering Co-Op Student
Rising Edge Group
Calgary, AB
- Temporary
The Electrical Engineering Co-op Student position at Rising Edge Group is designed for students who are currently enrolled in an Electrical Engineering program or related field. The co-op…
Added 4 days ago
C
Stagiaire - Intelligence artificielle-EN
CAE
Montreal, QC
- Full-time
Currently enrolled in a relevant undergraduate or graduate program (Computer Science, Engineering, Mathematics, etc.)
Added 4 days ago
W
Technical Writer
Webuild
Toronto, ON
- $80,000 to $120,000 CAD / year
- Full-time
Webuild is an international construction company of civil engineering pioneers who have been at the forefront of the construction business for 120 years. With over 92,000 employees…
Added 4 days ago
PC
Technical Support Team Lead
Powerhouse Controls Ltd
Cambridge, ON
- Full-time
5+ years of experience in automation, systems integration, or controls engineering.
Added 4 days ago
SG
Consultant(e), NetSuite / ERP
Solutions GURUS (GURUS Solutions)
Montreal, QC
- Full-time
Experience with NetSuite (an asset) or other ERP systems
Added 4 days ago
GD
Junior - Intermediate Payroll Administrator
General Dynamics Mission Systems–Canada
Ottawa, ON
- Full-time
At General Dynamics Mission Systems–Canada, we’re not just engineering technology - we’re shaping the future of defence and security. Our teams design and deliver advanced, mission-critical…
Added 4 days ago
C
Stagiaire - Spécialiste de données-EN
CAE
Montreal, QC
- Full-time
Added 4 days ago
W
Director, Subcontracts - Global Process Owner
Worley
AB · Edmonton, AB
- Full-time
…across the life of their assets. We specialize in consulting, engineering, procurement and construction across the project lifecycle, with services extending through to operations and…
Added 4 days ago
W
Director, Subcontracts - Global Process Owner
Worley
Calgary, AB
- Full-time
…across the life of their assets. We specialize in consulting, engineering, procurement and construction across the project lifecycle, with services extending through to operations and…
Added 4 days ago
L
Senior QA Automation Engineer – Cypress
LTM
Mississauga, ON
- $103,554 to $115,200 CAD / year
- Full-time
Work collaboratively across product lines and department boundaries to enable functional testing and work closely with the engineering team to build out tooling and automation
Added 4 days ago
G
Manager, Agent Development, Applied AI
Google
Toronto, ON
- Full-time
Bachelor’s degree in Engineering, Computer Science, a related field, or equivalent practical experience.
Added 4 days ago
G
Manager, Agent Development, Applied AI
Google
Waterloo, ON
- Full-time
Bachelor’s degree in Engineering, Computer Science, a related field, or equivalent practical experience.
Added 4 days ago
MI
Intermediate Layout Technician
Magna International
Milton, ON
- Full-time
Cosma provides a comprehensive range of body, chassis and engineering solutions to global customers. Through our robust product engineering, outstanding tooling capabilities and diverse…
Added 4 days ago
E
Analyste BOM / BOM Analyst
Expleo
Montreal, QC
- Contract
…will work closely with cross-functional teams to coordinate engineering changes, maintain product traceability, and support operational activities across ERP and PLM…
Added 4 days ago
GD
Internal Communications & Engagement Specialist
General Dynamics Missions System International
Ottawa, ON
- $75,000 to $95,000 CAD / year
- Full-time
At General Dynamics Mission Systems–Canada, we’re not just engineering technology - we’re shaping the future of defence and security. Our teams design and deliver advanced, mission-critical…
Added 4 days ago
A
Electrical, Instrumentation & Control Specialist
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Mississauga, ON · Montreal, Québec
- Full-time
Design complete EIC solutions based on project scope definition for pre-sales and engineering;
Added 4 days ago
Principal Technology Architect
Infosys
Canada
Proven experience driving Cloud, Data, AI, Digital Engineering, and/or technology modernization initiatives in complex enterprise environments.
Added 4 days ago
FF
Safety Systems Analyst
FPS Food Process Solutions Corporation
Richmond, BC
- Full-time
FPS is seeking a highly analytical and technically proficient Safety Systems Analyst to lead the development, optimization and governance of technology solutions that support Corporate…
Added 4 days ago
FF
Safety Systems Analyst
FPS Food Process Solutions Corporation
Charlottetown, PE
- Full-time
FPS is seeking a highly analytical and technically proficient Safety Systems Analyst to lead the development, optimization and governance of technology solutions that support Corporate…
Added 4 days ago
AL
Technical Business Analyst
Acturis Limited
Victoria, BC
- Full-time
The Downloads team main mission is creating efficiencies for our customers by facilitating the automated download of key information from third party systems.
Added 4 days ago
B
Senior Planner/Scheduler
Brunel
Saskatoon, SK
- $90 to $110 CAD / hour
- Contract
Facilitate communication between underground operations, project teams, engineering, and construction groups.
Added 4 days ago
O
Technical Services Engineer (Timmins ON)
Orica
Timmins, ON
- Full-time
…with practical, site-based expertise across blasting products, systems, and services. Working with customer teams and Orica’s Technical Services, Operations, and Commercial groups, the role…
Added 4 days ago
GD
Internal Communications & Engagement Specialist
General Dynamics Mission Systems–Canada
Ottawa, ON
- $75,000 to $95,000 CAD / year
- Full-time
At General Dynamics Mission Systems–Canada, we’re not just engineering technology - we’re shaping the future of defence and security. Our teams design and deliver advanced, mission-critical…

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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