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Added 3 mins ago
E
Site Project Manager
Ecolab
Calgary, AB · CAN-Calgary Office Quarry Park
- Full-time
The Site Project Manager directs the Site Lead and Crew Leads as applicable to lead execution. The Project Engineer retains technical authority for commissioning methods, technical…
Added 3 mins ago
M
Senior Full Stack Engineer, Customer & Cardholder Experiences
Marqeta
Remote, Canada
- Full-time
- Remote
We are looking for a Senior Full Stack Software Engineer to join our Customer & Cardholder Experiences team, delivering innovative UIs and embeddable solutions to transform the experience…
Added 32 mins ago
LT
Automation and Build Developer II
LMI Technologies
Burnaby, BC
- Full-time
Join our Software Operations team as a Build & Test Automation Engineer and become the engine behind how our code gets from a developer's keyboard to a sensor on that line.
Added 43 mins ago
SL
Associate Software Engineer
Sun Life
Toronto, ON · Waterloo, ON · Sun Life Toronto One York
- Full-time
…technology. We're looking for a talented Associate Software Engineer- .NET to own meaningful projects that drive real impact for our clients' financial security and wellbeing. You will have…
Added 45 mins ago
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HSE Advisor
AtkinsRéalis
Toronto, ON
- Full-time
Lead or support incident investigations, root cause analyses, and event management processes, including the development and tracking of corrective and preventive actions.
Added 45 mins ago
A
HSE Advisor
AtkinsRéalis
Toronto, ON
- Full-time
Lead or support incident investigations, root cause analyses, and event management processes, including the development and tracking of corrective and preventive actions.
Added 45 mins ago
A
Specialist Engineer - Process
AtkinsRéalis
Mississauga, ON
- Full-time
Lead technical activities, provide design solutions, resolve critical design challenges for new, updated and modified Candu Nuclear Steam Plant (NSP) process systems, structures and…
Added 45 mins ago
A
Specialist Engineer - Process
AtkinsRéalis
Mississauga, ON
- Full-time
Lead technical activities, provide design solutions, resolve critical design challenges for new, updated and modified Candu Nuclear Steam Plant (NSP) process systems, structures and…
Added 1 hour ago
LT
Automation and Build Developer II
LMI Technologies
Burnaby, BC
- $75,200 to $107,160 CAD / year
- Full-time
Join our Software Operations team as a Build & Test Automation Engineer and become the engine behind how our code gets from a developer's keyboard to a sensor on that line.
Added 1 hour ago
KG
Reliability Engineer
Kinross Gold Corporation
Toronto, ON
- Full-time
The Reliability Engineer, as part of the Asset Management team, plays a vital role in enhancing the reliability, performance, and life cycle management of critical equipment assets. This…
Added 1 hour ago
T
Software Engineer II - Angular / UI
TD
Toronto, ON
- Full-time
Easyweb team is looking to on-board a self-starting, high-performing frontend software engineer with a strong engineering mindset to help us grow in our online application.
Added 1 hour ago
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Sr. Platform Engineer, TD Securities
TD
Toronto, ON
- Full-time
This is a unique opportunity to work on cutting-edge technologies to solve problems of scale and speed. As a lead platform engineer, you will be working on leading platform engineering team…
Added 1 hour ago
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Lead UI Developer - VP
Citi
Mississauga, ON
- Full-time
…globally. We are looking for a talented and passionate UI/UX engineer to join our trade processing application development team and continue to evolve our next-generation trading…
Added 1 hour 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 3 hours ago
AC
Product Development Engineer – Liquid Cooling
Amphenol Communications Solutions
Markham, ON
- Full-time
Amphenol is seeking a highly skilled and motivated Product Development Engineer to lead the design and development of liquid cooling solutions for front-end I/O connectors that will power…
Added 3 hours ago
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Java Software Engineer
Dexian
Mississauga, ON
- Contract
Technical Project Delivery: Lead the technical implementation and delivery of critical, complex backend and data-processing initiatives. Partner with cross-functional teams to ensure…
Added 3 hours ago
EG
Team Lead, Land Development (Subdivisions)
Egis Group
Ottawa, ON
- $125,000 to $150,000 CAD / year
- Full-time
Team Lead, Land Development (Subdivisions) based in Ottawa, Ontario is responsible for leading and growing the subdivisions practice within the Land Development team. The role provides…
Added 3 hours ago
T
Software Engineer II - Angular / UI
TD
Toronto, ON
- Full-time
Easyweb team is looking to on-board a self-starting, high-performing frontend software engineer with a strong engineering mindset to help us grow in our online application.
Added 3 hours ago
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AI Solutions Architect
Hays
Toronto, ON
- Contract
Our client is a leading financial services organization undergoing significant digital transformation initiatives across enterprise data, AI, banking integration, risk, finance, treasury,…
Added 3 hours ago
EI
Team Lead, Land Development (Subdivisions)
Egis in Canada
Ottawa, ON
- $125,000 to $150,000 CAD / year
- Full-time
Team Lead, Land Development (Subdivisions) based in Ottawa, Ontario is responsible for leading and growing the subdivisions practice within the Land Development team. The role provides…
Added 3 hours ago
ZL
Lead of Launch Management 73621
ZF LIFETEC
Midland, ON
- Full-time
Ensure a functional, ergonomically sound, practical work cell design/layout/environment. Assist Tooling, Manufacturing engineer, Quality Engineer and the rest of the team with design and…
Added 4 hours ago
BC
Senior Electrical Engineer
Bantrel Co.
Leroy, SK
- Full-time
…planning and strategic decision horizons supported by a strong financial…
Added 4 hours ago
B&
Senior Civil Engineer (Calgary)
Burns & McDonnell
Calgary, AB · Greater Calgary Metropolitan Area
- Full-time
The Senior Civil Engineer will lead civil design project teams to create world class designs for new projects, alterations and redevelopments on a variety of projects including power,…
Added 5 hours 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 6 hours 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.…

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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