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Added 26 days ago
E
Environmental Field Technician
Englobe
Toronto, ON · Etobicoke, ON
- Full-time
Support excess soil, due diligence, and contaminated sites investigations for redevelopment and infrastructure projects;
Added 26 days ago
T
Intermediate Software Engineer (Agentic AI Verification)
Trulioo
Vancouver, BC
- Full-time
Reporting to the Senior Director, Engineering, the Intermediate Software Engineer will be responsible for building and hardening Trulioo's Agentic AI Verification capabilities, taking…
Added 26 days ago
V
DevOps Engineer
Varonis
Vancouver, BC
- Full-time
The Company: Varonis (Nasdaq: VRNS) is a leader in data security, fighting a different battle than conventional cybersecurity companies. Our cloud-native Data Security Platform continuously…
Added 26 days 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 26 days ago
A
HSE Advisor
AtkinsRéalis
Toronto, ON
- Full-time
…connect people, data and technology to transform the world's'infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants,…
Added 26 days ago
A
HSE Advisor
AtkinsRéalis
Toronto, ON
- Full-time
…connect people, data and technology to transform the world's'infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants,…
Added 26 days ago
PC
Mechanical Construction / Project Engineer
Phase Consulting
ON · Ontario, Canada
- Contract
We are seeking an experienced Construction Resident Engineer – Mechanical to support a major capital project for a leading Canadian mining operator.
Added 26 days ago
A
Specialist Engineer - Process
AtkinsRéalis
Mississauga, ON
- Full-time
…connect people, data and technology to transform the world's'infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants,…
Added 26 days ago
A
Specialist Engineer - Process
AtkinsRéalis
Mississauga, ON
- Full-time
…connect people, data and technology to transform the world's'infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants,…
Added 26 days ago
DS
Senior Network Engineer
Dacaro Services
Toronto, ON · Greater Toronto Area, Canada
- Contract
Effective collaboration across infrastructure, security, and application teams.
Added 26 days ago
SI
Software Engineer, Android, Level 4
Snap Inc.
Toronto, ON
- Full-time
We’re looking for an Android Engineer to join Snap Inc!
Added 26 days ago
SI
Software Engineer, Android, Level 4
Snap Inc.
Toronto, ON
- Full-time
We’re looking for an Android Engineer to join Snap Inc!
Added 26 days ago
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Sr. Platform Engineer, TD Securities
TD
Toronto, ON
- Full-time
We are looking for an experienced Hands-on Sr. Platform Engineer that will work on innovative and transformational initiatives at TD Securities -- the implementation of the next generation…
Added 26 days ago
KC
Site Reliability Engineer
KPMG Canada
Vaughan, ON
- Full-time
The OPS Site Reliability Engineer will be a focal role owning and ensuring the fluent operations of Managed Services offerings in the KPMG production cloud environment. The role will be…
Added 26 days ago
PC
Ingénieur(e) en maintien de la circulation
Parsons Corporation
Montreal, QC
- Full-time
…actuellement à la recherche de plusieurs professionnels en infrastructure de transport, notamment des ingénieurs et des techniciens dans les domaines du génie routier, de la planification…
Added 26 days ago
GS
Administrateur Stockage (Senior)
Groupe SII
Montreal, QC
- Full-time
Diagnostiquer et résoudre des problématiques complexes dans des environnements distribués applicatifs et d’infrastructure
Added 26 days ago
SM
Backend Platform Engineer - Hapiko
Spin Master Ltd
Toronto, ON
- Full-time
You'll own everything behind that moment: the real-time connection layer, the API, the job pipeline and the cloud infrastructure every device talks to. We're a small team building a…
Added 26 days ago
R&
Senior Azure Cloud Platform Engineer
Robertson & Company Ltd.
Toronto, ON
- Contract
Robertson is seeking a skilled Senior Azure Cloud Platform Engineer to join our client in support of an existing vacancy.
Added 26 days ago
eTrading Full Stack Engineering - Compute
HSBC Global Services Limited
Toronto, ON
Join our eTrading infrastructure engineering team in Markets & Securities Services Information Technology, building deterministic, secure and highly available compute platforms supporting…
Added 26 days ago
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Senior Cloud Systems Engineer (CI/CD & Data Platform)
Numeris
Toronto, ON
- Full-time
Numeris is seeking a Senior Cloud Systems Engineer to lead the design, automation, and operation of enterprise cloud platforms across AWS and Azure. This role combines deep expertise in…
Added 26 days ago
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Enterprise Cloud & Platform Engineer
Numeris
Toronto, ON
- Full-time
The Enterprise Cloud & Platform Engineer is responsible for the design, implementation, administration, continuous improvement, security, and operation of enterprise cloud, network,…
Added 26 days ago
Quality Supervisor
Aecon
Kincardine, ON
Aecon delivers some of the most complex and impactful infrastructure projects - from transformative transportation networks to critical energy, industrial and nuclear programs. The projects…
Added 26 days 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 26 days ago
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Java Software Engineer
Dexian
Mississauga, ON
- Contract
Framework Expertise: Strong experience with the Spring Ecosystem (Spring Boot, Spring Cloud, Spring Data, Spring Security) and ORM frameworks (Hibernate/JPA).
Added 26 days ago
RT
Electrical Engineer
Rio Tinto
Labrador City, NL
- Full-time
Shape the reliability and performance of critical power infrastructure supporting one of North America’s leading integrated iron ore operations.

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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