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Added 28 mins ago
Communications and Marketing Specialist
Peoples Choice Warranty
Toronto, ON
Full-time
We are seeking a creative, detail-oriented Communications & Marketing Specialist to join our growing team. This role will lead the development and execution of PCW’s communications and…
Added 28 mins ago
Business Analyst
TMX Group
Toronto, ON
$120,000 to $130,000 CAD / year
Full-time
…organizations enhancing capital markets. United as a global team, we’re connecting cross-functionally, traversing industries and geographies, moving opportunity into action, advancing…
Added 28 mins ago
Data Operations Engineer
goeasy Ltd.
Mississauga, ON
Full-time
Working under the guidance of the Data Operations Team Lead, the successful candidate will support business-critical data workloads, troubleshoot production issues, onboard new data…
Added 44 mins ago
Vendor Manager
BGIS
Toronto, ON
Full-time
BGIS is a global leader in integrated facility management services. With a combined team of over 10,000 globally, BGIS relentlessly focuses on delivering innovative service solutions that…
Added 57 mins ago
Senior Network Security Engineer (CCNP Security Needed)
RSM Canada
Toronto, ON
Full-time
…Professional – Security (CCNP Security) certification to join our team. As a Cisco Preferred partner delivering enterprise transport, security, wireless, cloud, and data center solutions,…
Added 59 mins ago
Staff Software Engineer
Versaterm
Ottawa, ON
Minimum of 8 years of experience in Android development, including experience leading or acting as a technical lead for a team.
Added 59 mins ago
Data Engineer
Citylitics
Remote, Canada
Full-time · Remote
…You'll work with technologies we already use, including GCP services like Cloud Composer, Cloud SQL, BigQuery, and Vertex…
Added 59 mins ago
Planning Advisor
Celestica International LP
Toronto, ON
…external suppliers as applicable. May influence others outside of team to ensure goals are met and resolves conflicts in an effective manner. Erroneous decisions or failure to achieve…
Added 59 mins ago
Planning Advisor
Celestica International LP
Toronto, ON
…external suppliers as applicable. May influence others outside of team to ensure goals are met and resolves conflicts in an effective manner. Erroneous decisions or failure to achieve…
Added 59 mins ago
Senior Data Platform Administrator - EN 533
Export Development Canada | Exportation et développement Canada
Remote, Canada
Full-time · Remote
The Data Platform Management (DPM) team owns and operates EDC’s enterprise data platforms assuring they are secure, reliable, and ready to scale. We enable teams across Enterprise Data…
Added 1 hour ago
Software Engineer Co-op, Agents
Solink
Remote, Canada
$55,000 to $68,000 CAD / year
Full-time · Remote
You have exposure to cloud services (AWS, Google Cloud, etc.).
Added 1 hour ago
Business Development Representative II
Duck Creek Technologies
Mississauga, ON
Full-time
…built, enabling the industry to capitalize on the power of the cloud to run agile, intelligent, and evergreen operations. Our modern SaaS solutions help insurers set a new standard and…
Added 1 hour ago
Deals Real Assets, Data Engineering & Digital Solutions, Senior Associate
Pwc Canada
Vancouver, BC
Full-time
Lead the development, build, and maintenance of internal tools and applications using Python, including Generative AI modules, automation scripts, and data processing pipelines to enhance…
Added 1 hour ago
Development Lead – AWS / Angular / Full Stack
Dawn InfoTek
Toronto, ON
Contract
We are currently seeking a Development Lead to join our dynamic team and work with one of our client, a leading bank in Canada
Added 1 hour ago
Data Engineer
Citylitics Inc.
Toronto, ON
$70,000 to $80,000 CAD / year
Full-time
…You'll work with technologies we already use, including GCP services like Cloud Composer, Cloud SQL, BigQuery, and Vertex…
Added 1 hour ago
Manager, Software (Embedded & Digital Products)
Wabtec Corporation
London, ON
Full-time
As the Manager, Software (Embedded & Digital Products), you will report to the Manager, Engineering & Products and lead a multidisciplinary software organization responsible for embedded…
Added 1 hour ago
Automation Test Lead – API : Toronto, ON (Hybrid)
AceStack
Toronto, ON
Full-time
…experience worked as Test LeadGood Knowledge on working in Agile team and aware of agile ceremonies including JIRAGood hands-on knowledge working with Postman Rest API’s & SOAP XMLGood to…
Added 1 hour ago
Director, Internal Controls
CI Financial
Toronto, ON
Full-time
…management, delivering independent, objective assurance and advisory services that support accountability, transparency, and continuous improvement across the organization. The ideal…
Added 1 hour ago
Senior Director, Infrastructure,Telecom & Operations
Agropur
Longueuil, QC · St-Hubert Campus
Full-time
…oversees service delivery and operational governance, drives cloud and infrastructure modernization, and ensures effective transition of new or changed services into production. The role…
Added 1 hour ago
AI Administrator, M365 & Copilot Platform - EN 328
Export Development Canada | Exportation et développement Canada
Remote, Canada
Full-time · Remote
Lead and ensure integrated digital, data, infrastructure, and cybersecurity implementations to create excellent customer, user, and employee experiences.
Added 2 hours ago
Software Developer
Equifax
Montreal, QC · CAN - Montreal
Full-time
2 ans ou plus d'expérience avec les technologies Cloud : GCP, AWS ou Azure.
Added 2 hours ago
Senior Software Engineer
Fleetworthy
Edmonton, AB
Familiarity with cloud platform services such as Azure or AWS
Added 2 hours ago
Supervisor, Enterprise Data Services
The City of Guelph
Guelph, ON
Other
When you join the City of Guelph, you join a team of over 2000 employees who deliver services the community relies on every day. Together, we are bringing to life Guelph’s vision of an…
Added 2 hours ago
Manager, Software (Embedded & Digital Products)
Wabtec
London, ON
Full-time
As the Manager, Software (Embedded & Digital Products), you will report to the Manager, Engineering & Products and lead a multidisciplinary software organization responsible for embedded…
Added 2 hours ago
Staff Software Engineer, User Targeting
Braze
Toronto, ON
Cloud Technologies: experience with container orchestration (Kubernetes), and cloud services (AWS, GCP, Azure)

Dexian

Java Backend Developer

Mississauga, ON, Canada

Job type: Contract
Apply by: Nov 1, 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 2, 2026

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Original job description

Role- Java Backend Developer

Location- Mississauga ON(3 Days/Week)

Contract to Hire

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.

Category

Targeted Keywords

Languages & Core Tech

Core Java, Java 17, Java 21, JVM Tuning, Multithreading, Concurrency, Garbage Collection, OOP, SOLID Principles, Design Patterns, Data Structures, Algorithms

Frameworks & APIs

Spring Boot, Spring Cloud, Microservices, Hibernate, JPA, REST, gRPC, Event-Driven Architecture

Data Processing & Messaging

Apache Kafka, Apache Spark, Flink, Hadoop, ETL, Data Pipelines, Batch Processing, Stream Processing, Messaging Queues

Databases

SQL, PostgreSQL, Oracle, NoSQL, MongoDB, Cassandra, Redis, Database Optimization, Schema Design

DevOps & Cloud

Docker, Kubernetes, CI/CD, Jenkins, GitHub Actions, AWS, Linux, Cloud-Native, Distributed Systems

Methodologies & Quality

TDD (Test-Driven Development), Clean Code, Unit Testing, Integration Testing, Systems Analysis, Agile, SDLC

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.

Apply About employer

More about this job

Responsibilities

Design, build, and optimize scalable Java backend systems for batch and real-time data processing, including distributed architectures and data pipelines. Lead technical delivery, resolve performance and concurrency issues, uphold testing and code-quality practices, and provide technical mentorship.

Requirements

Requires 8 or more years of application development or systems analysis experience, expert-level Core Java knowledge, and hands-on experience with distributed data processing and streaming technologies. Candidates should also have strong Spring, database, distributed-systems, DevOps, and testing experience; cloud, financial-services, and Linux experience are preferred.

Skills

Core Java
Java 17
Java 21
Concurrency
JVM Performance Tuning
Spring Boot
Microservices
Apache Kafka
Apache Spark
Flink
Data Pipelines
PostgreSQL
Docker
Kubernetes
CI/CD
Distributed Systems

Visa sponsorship

Not detected in the job text

Keywords

Core Java
Java 11
Java 17
Java 21
JVM Tuning
Multithreading
Concurrency
Garbage Collection
Spring Boot
Spring Cloud
Microservices
Hibernate
REST APIs
gRPC
Apache Kafka
Apache Spark
Flink
Hadoop
ETL
Stream Processing
PostgreSQL
Oracle
MongoDB
Cassandra
Redis
Docker
Kubernetes
CI/CD
AWS
Test-Driven Development

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