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Added 1 min ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
We are looking for a Senior Full Stack Engineer to join the Workforce Management product stream and build reliable solutions for forecasting, staffing, scheduling, real-time adherence,…
Added 32 mins ago
Senior Engineer - Mechanical Systems and Equipment
Westinghouse Electric Company, LLC
Kitchener, ON
As a Senior Engineer – Mechanical Systems and Equipment you will provide technical leadership for the design, development, analysis, and implementation of complex mechanical systems and…
Added 32 mins ago
CG
Senior/Expert Hardware Design Engineer - FPGA
CS GROUP - Canada
Montreal, QC
- Full-time
CS Group Canada is seeking a Senior/Expert Hardware Design Engineer with strong experience in video and audio systems to contribute the development and certification of automotive and…
Added 32 mins ago
DI
Senior IT Security Engineer
Draganfly Inc.
Burnaby, BC
- $120,000 to $140,000 CAD / year
- Full-time
The Senior IT Security Engineer builds, operates, and improves security across Draganfly’s cloud-first IT environment. This hands-on role combines Microsoft 365 and cloud security…
Added 32 mins ago
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Senior Software Engineer
BettingJobs
Toronto, ON
- Full-time
BettingJobs is hiring a Senior Software Engineer a global leader in online gaming, to join a new backend engineering team in Toronto.
Added 48 mins ago
GM
Senior Software Engineering - Protocol Operations & Trust
General Motors
Markham, ON
- Full-time
General Motors is a global leader in advanced driver assistance. With Super Cruise hands-free technology in more than 750,000 Super Cruise-equipped vehicles on the road and over 1 billion…
Added 48 mins ago
SM
Backend Platform Engineer - Hapiko
Spin Master Ltd
Toronto, ON
- Full-time
…innovation is a great part of what has made us an industry leader. How do we stay ahead of the pack? By hiring the best and brightest minds - and that’s why we want…
Added 1 hour ago
BC
Senior Manager, Data & AI
BDO Canada
Vancouver, BC
- Full-time
Previous hands-on experience as a technical delivery professional, architect, developer, data engineer, analytics leader, or similar role, with the ability to remain technically credible…
Added 1 hour ago
OE
Senior Reservoir Engineer - Light Oil
Obsidian Energy Ltd.
Calgary, AB
- Full-time
Obsidian Energy is seeking a Senior Reservoir Engineer to join our Light Oil Development team. We are looking for an experienced professional who has a strong understanding of reservoir…
Added 1 hour ago
OE
Junior Reservoir Engineer - Light Oil
Obsidian Energy Ltd.
Calgary, AB
- Full-time
Obsidian Energy is seeking a Junior Reservoir Engineer to join our Light Oil Development team. Engineers-in-Training (E.I.T.s) are welcome to apply. We are looking for an enthusiastic,…
Added 1 hour ago
V
Senior Quality Management System (QMS) Quality Engineer
VitalBio
Oakville, ON
- Full-time
The Senior Quality Management System (QMS) Quality Engineer is a technical leader responsible for maintaining, improving, and ensuring the effectiveness of the Company's Quality Management…
Added 1 hour ago
IN
Principal Geomechanics Engineer (CAN)
ITASCA North America
Remote, Canada
- $180,000 to $230,000 CAD / year
- Full-time
- Remote
This role is suited for a senior technical and client-facing leader with strong practical experience, sound engineering judgment, and credibility with mining clients. You will guide complex…
Added 1 hour ago
RA
Senior Consultant
Revay and Associates Limited
Toronto, ON
- Full-time
Revay is seeking a bright and motivated senior consultant with experience in the Canadian construction industry to join our growing team in Toronto. The senior-level candidate should be…
Added 1 hour ago
WI
Senior Technical Director - Tailings, Waste Dumps and Stockpiles
WSP in Canada
Vancouver, BC
- Full-time
Step into a senior technical leadership role that will shape the future of mine waste management across British Columbia, Alberta, and beyond. As the Regional Lead for Mine Waste Dumps &…
Added 1 hour ago
WI
Senior Technical Director - Tailings, Waste Dumps and Stockpiles
WSP in Canada
Vancouver, BC
- Full-time
Step into a senior technical leadership role that will shape the future of mine waste management across British Columbia, Alberta, and beyond. As the Regional Lead for Mine Waste Dumps &…
Added 1 hour 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 hour ago
WI
Senior Environmental Engineer / Geoscientist
WSP in Canada
Toronto, ON
- Full-time
In this senior geoscience leadership role, you’ll provide strategic direction and technical leadership to multidisciplinary environmental teams delivering some of the most complex and…
Added 2 hours ago
LT
Account Manager
Longterm Technology Services
London, ON
- Full-time
…Siemens Solution and Technology Partner, we are an industry leader in PLM software, hardware, and services. At LTS, we don’t just embrace the future of manufacturing, we help build…
Added 2 hours ago
C
Senior Embedded Software Engineer, RLS
Ciena
Ottawa, ON
- 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 2 hours ago
CB
Estimator - Intermediate/Senior (CB)
Clark Builders
Edmonton, AB
- Full-time
…personalized culture of a local team with the strength of a global leader. Learn more about our Purpose and what drives us by visiting our Who We Are…
Added 2 hours ago
Agentic AI Software Backend & Platform Engineer
Siemens
Kitchener, ON
We are seeking a Backend & AI Engineer, for Siemens Digital Industries Operations Software to help build and scale our Agentic AI platform. The role focuses on solid backend engineering,…
Added 3 hours ago
WI
Senior Environmental Engineer / Geoscientist
WSP in Canada
Ottawa, ON
- Full-time
In this senior geoscience leadership role, you’ll provide strategic direction and technical leadership to multidisciplinary environmental teams delivering some of the most complex and…
Added 3 hours ago
WI
Senior Environmental Engineer / Geoscientist
WSP in Canada
Sudbury, ON · Greater Sudbury, ON
- Full-time
In this senior geoscience leadership role, you’ll provide strategic direction and technical leadership to multidisciplinary environmental teams delivering some of the most complex and…
Added 3 hours ago
RD
Full Stack Engineer
Randstad Digital
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Full Stack Developer & Senior Full Stack Developer (IoT & Cloud Solutions)
Added 3 hours ago
WI
Senior Environmental Engineer / Geoscientist
WSP in Canada
Sudbury, ON · Greater Sudbury, ON
- Full-time
In this senior geoscience leadership role, you’ll provide strategic direction and technical leadership to multidisciplinary environmental teams delivering some of the most complex and…

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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