Jobs in Canada

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Added 1 month ago
Security Technology Analyst
University of Toronto
Toronto, ON
Ability to describe complex technical concepts, security issues, and policy requirements to users, technical staff, managers, and senior stakeholders at varying levels of technical…
Added 1 month ago
VC
Senior Temporary Works Inspector H/F
VINCI Construction Grands Projets Hellas S.A.
Toronto, ON · Greater Toronto Area, Canada
- Temporary
As a Temporary Works Inspector, you will support the Temporary Works Engineer in the inspection, verification, and monitoring of temporary works during the construction lifecycle. You will…
Added 1 month 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 1 month ago
RI
Data Engineer
Rivago Infotech Inc
Toronto, ON
- Contract
Must have : SQL+ Datawarehouse+ Banking domain
Added 1 month ago
TT
Electrical Commissioning Specialist / Lead – Sarnia, ON
TWD Technologies Ltd.
Sarnia, ON
- Contract
Licensed Professional Engineer (P.Eng) registered with Professional Engineers Ontario (PEO), OR Certified Engineering Technologist (C.E.T.), OR
Added 1 month ago
Sr Associate Platform Engineer
Scotiabank
Toronto, ON
Contributes to the overall success of the Senior Associate Cloud Platform Engineering function by ensuring long‑term technical vision and roadmap is defined and maintained, focusing on…
Added 1 month ago
Bilingual Senior Specialist, Software Engineering (Environment Management)
CMHC - SCHL
Ottawa, ON · Montreal, QC
Join the Platform Engineering team, in the Senior Specialist, Software Engineering & Environment Management position, where we’re modernizing how CMHC builds and operates software…
Added 1 month ago
Software Development Engineer II, S3 Shard Store
Amazon
Vancouver, BC
…existing code, improve operational tooling, collaborate with senior engineers to design new components that shape the future of the system, and build expertise in specific areas of the…
Added 1 month ago
TS
Master
Thames Skills Academy (TSA)
London, ON
- Full-time
This role works in close collaboration with the Head of Fleet Operations and Senior Masters to ensure the safety and great customer experience of our passengers.
Added 1 month ago
AI
Senior AWS Data Engineer
Apptoza Inc.
Toronto, ON
- Contract
We are seeking a Senior AWS Data Engineer with 12+ years of hands-on experience designing, developing, and supporting enterprise-scale data platforms on AWS. The ideal candidate will be a…
Added 1 month ago
M
Infrastructure Architect
MethodHub
Toronto, ON
- Contract
Location: Toronto, ON (4 days in office, 1 day remote)
Added 1 month ago
JG
Structural Engineer in Training/Junior Engineer
John G. Cooke & Associates Ltd.
Ottawa, ON
- Full-time
We are seeking a skilled and detail-oriented Structural Engineer-in-Training/Junior Engineer to join our dynamic team, with 3-5 years work experience. The ideal candidate will be…
Added 1 month ago
RD
Full Stack Engineer
Randstad Digital
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Work Model: Hybrid (3 days per week in-office)
Added 1 month ago
M-
Spécialiste en intégration de systèmes, Laboratoire d'IA souveraine
Mila - Institut québécois d'intelligence artificielle
Montreal, QC
- Full-time
Reporting to the Senior Director of Engineering, you will build and maintain deployment packages and automation for the stack. They will enable partners to deploy, upgrade, and roll back…
Added 1 month ago
Senior Software Engineer, Full-Stack Applications - Python
Fitch Group
Toronto, ON
Senior Software Engineer, Full-Stack Applications – Python
Added 1 month ago
M
Senior Cloud Engineer -Hybrid
Manulife
Toronto, ON · Waterloo, ON
- Full-time
Are you passionate about building scalable, secure, and modern cloud solutions? We're looking for a Senior Cloud Engineer who can combine deep technical expertise with business insight to…
Added 1 month ago
L
Database Administrator
LCBO
Toronto, ON
- Full-time
…team that strives for operational excellence? Reporting to the Senior Manager, Infrastructure, you will be responsible for the administration, maintenance, security, performance, and…
Added 1 month ago
E
Azure Cloud Security Engineer
ELITS
Remote, Canada
- Full-time
- Remote
ELITS Canada is looking for an experienced Azure Cloud Security Engineer for a remote consulting assignment based in Canada. Candidates must be authorized to work in Canada and able to…
Added 1 month ago
LC
Senior Analytics Engineer
Lightspeed Commerce, Inc.
Remote, Canada
- Full-time
- Remote
Lightspeed's Data Office is hiring a Senior Analytics Engineer to design and own the data models that drive decisions across financial performance, GTM activities, and product insights.…
Added 1 month ago
LC
Senior Analytics Engineer
Lightspeed Commerce, Inc.
Remote, Canada
- Full-time
- Remote
Lightspeed's Data Office is hiring a Senior Analytics Engineer to design and own the data models that drive decisions across financial performance, GTM activities, and product insights.…
Added 1 month ago
Senior Software Engineer, Data Platform
Okta
Toronto, ON
…in the use of data and machine learning to improve end-user security and to expand that core-competency across the rest of engineering. You will have a sizable impact on the direction,…
Added 1 month ago
SF
Senior Project Manager
Soletanche Freyssinet
BC · British Columbia, Canada
- Full-time
The Senior Project Manager is responsible for the successful execution of complex and high-value geotechnical construction projects throughout Western Canada. This role leads projects from…
Added 1 month ago
NS
Senior Applied AI Engineer
Network Solutions
Canada
- Full-time
We are looking for a hands on Senior Applied AI Engineer who combines strong software engineering with practical AI problem solving. You will build production AI experiences across Network…
Added 1 month ago
CC
Refrigeration Mechanic
Cameco Corporation
SK · Saskatchewan, Canada
- Full-time
currently hold or have the ability to obtain a valid Saskatchewan refrigeration engineer certification;
Added 1 month ago
C
Senior DevOps Engineer, Canada
Crypto.com
Canada
- Full-time
As a Senior Devops Engineer, you will be involved a number of technically challenging problems, oversees design and coding for features. This position will be working very closely in…

Dexian

Java Software Engineer

Mississauga, ON, Canada

Contract

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Job details

Job type: Contract
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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Work requirements

Jobs in Canada