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Added 24 days ago
A
Full Stack Java Developer
Astek
Montreal, QC
- Full-time
We are looking for a Senior developer, preferably with exposure to Cloud Architectures & Public Cloud offerings, to join our team building a resilient, scalable, and secure cloud-based…
Added 24 days ago
TC
Senior Java Software Engineer
TSR Consulting
Mississauga, ON
- Contract
TSR Consulting is currently seeking a highly motivated Java Full Stack/ Java Backend Developer for an opportunity in Mississauga, ON Hybrid
Added 24 days ago
A
Senior Full Stack Software engineer
Affinity
BC · British Columbia, Canada
- Full-time
On behalf of our client, Affinity is seeking an experienced Senior Full Stack Developer to join their engineering team in Canada. This is a full-time opportunity for a seasoned engineer who…
Added 25 days ago
SS
Sr. Software Engineer, AVP II
State Street
Toronto, ON
- Full-time
…largest participants in the industry. The role requires a strong full-stack engineer who can work across rich web functionality, backend services, automated testing, performance…
Added 24 days ago
Cloud Technical Solutions Developer, Storage and Databases
Google
Waterloo, ON
…developed for security, reliability and scalability, running the full stack from infrastructure to applications to devices and hardware. Our teams are dedicated to helping our customers -…
Added 25 days ago
MS
Full Stack Developer – Data Engineering (Hybrid)
Morgan Stanley
Montreal, QC
- Full-time
We’re seeking someone to join our Data Obfuscation team as a Full Stack Developer – Data Engineering to design and deliver scalable, secure, and reusable data platforms and services that…
Added 24 days ago
G
Cloud Technical Solutions Developer, Storage and Databases
Google
Waterloo, ON
- Full-time
…developed for security, reliability and scalability, running the full stack from infrastructure to applications to devices and hardware. Our teams are dedicated to helping our customers -…
Added 1 month ago
OP
Staff Software Engineer
Open People Network (OPN)
Toronto, ON
- Full-time
…and digital document delivery, integrating with existing EMR…
Added 25 days ago
C
Senior Full Stack Java Developer - Vice President
Citi
Mississauga, ON
- Full-time
Citi's Banking Technology team is looking for a Senior Full Stack Java Developer to play a central role in a global digital transformation programme that is reshaping how institutional…
Added 25 days ago
C
Software Developer (Burnaby)
Clio
Burnaby, BC · Vancouver, BC
- Full-time
Work in an agile environment with our team of full stack developers across a variety of projects;
Added 25 days ago
SS
Sr. Software Engineer, AVP II
State Street
Toronto, ON
- Full-time
…largest participants in the industry. The role requires a strong full-stack engineer who can work across rich web functionality, backend services, automated testing, performance…
Added 25 days ago
MS
Full Stack Developer – Data Engineering (Hybrid)
Morgan Stanley
Montreal, QC
- Full-time
We’re seeking someone to join our Data Obfuscation team as a Full Stack Developer – Data Engineering to design and deliver scalable, secure, and reusable data platforms and services that…
Added 25 days ago
LI
Java Software Engineer
LanceSoft, Inc.
Quebec, QC
- $60 to $70 CAD / hour
- Contract
We are seeking a hands-on full-stack Java engineer to design, build, and support new trade Supervisory Dashboard capabilities spanning server-side services and a modern React Ul, with a…
Added 25 days ago
TC
Software Engineer - Python, AWS Lambda, AI
Tata Consultancy Services
Toronto, ON
- $90,000 to $110,000 CAD / year
- Full-time
…is enabling its clients to transform themselves across the full AI stack, from infrastructure to…
Added 25 days ago
T
Senior Software Engineer
Tactable
Toronto, ON
- Full-time
Experience integrating backend services with React-based frontends (bonus if full-stack)
Added 25 days ago
MM
Senior Software Engineer
Mohawk Medbuy Corporation
Toronto, ON · Greater Toronto Area, Canada
- Full-time
5+ years proven experience designing, developing, testing, and deploying full-stack applications end-to-end
Added 25 days ago
IT - Senior Software Engineer
Mohawk Medbuy Corporation (MMC)
Burlington, ON · London, ON · Toronto, ON
5+ years proven experience designing, developing, testing, and deploying full-stack applications end-to-end
Added 25 days ago
I
Software tester (QA) - Inteleshare (Canada)
Intelerad
Canada
- Full-time
…use to share and exchange medical imaging. Working across the full testing lifecycle, you'll partner closely with Product, Engineering, and Customer Success to catch issues before they…
Added 25 days ago
TC
Sr Software Quality Engineer (AI Focused)
Tata Consultancy Services
Toronto, ON
- $90,000 to $110,000 CAD / year
- Full-time
…is enabling its clients to transform themselves across the full AI stack, from infrastructure to…
Added 25 days ago
G
Java FS Developer (Angular/ React)
Genpact
Montreal, QC
- Full-time
Nous recrutons pour le poste de Développeur(se) Java Full Stack (Angular/React)
Added 25 days ago
P
Full Stack Engineer
PeoplePilot
Toronto, ON
- $110,000 to $120,000 CAD / year
- Full-time
5+ years of software development experience with Java and/or Node.js, covering the full application development lifecycle.
Added 25 days ago
JG
Java Full stack Developer
J&M Group
Montreal, QC
- Contract
Minimum of 7 years of professional experience in Java (Primary) and Angular or React (Secondary)
Added 26 days ago
Software Dev Engineer, Machine Learning Compilers, Edge AI Compiler and Runtime Team
Amazon
Vancouver, BC
Design and develop software stack for deep learning accelerator
Added 25 days ago
A
Intermediate Software Developer
AppDirect
Montreal, QC
- Full-time
Work with PostgreSQL and messaging systems (Kafka, SQS/SNS) as part of the platform stack
Added 25 days ago
Intermediate Software Development
AppDirect
Montreal, QC
You contribute across the full stack and collaborate effectively with specialists when depth is needed. We expect strong fundamentals and steady growth in infra, backend, data, frontend,…

TSR Consulting

Senior Java Software Engineer

Mississauga, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Oct 16, 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: Sep 16, 2026

Original job description

TSR Consulting is currently seeking a highly motivated Java Full Stack/ Java Backend Developer for an opportunity in Mississauga, ON Hybrid

Position Title: Java Full Stack/ Java Backend Developer

Location: Mississauga, ON Hybrid

Anticipated Start Date: ASAP

Expected Duration: 6+Months contract to hire

Job Type: Hybrid

Job Description:

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.

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

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.

Benefits:

TSR Consulting offers all eligible employees a comprehensive benefits package including, but not limited to major medical, HSA, dental, vision, employer-provided group life, voluntary life insurance, short-term disability, long-term disability, and 401k.

About TSR:

TSR is a trusted staffing and workforce solutions partner with more than 50 years of experience delivery highly qualified talent to support clients' most critical business and technology initiatives. Through a disciplined approach to sourcing, candidate vetting, and delivery, TSR helps organizations scale teams quickly while maintaining quality and reliability.

TSR operates with a global delivery model, leveraging specialized teams to support enterprise clients across North America and beyond.

In June 2024, TSR was acquired by Justin Christian, founder and CEO of BCforward, a global provider of professional services and workforce solutions. This partnership expands TSR's ability to deliver broader capabilities, global delivery resources, and enhanced opportunities for both clients and consultants.

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More about this job

Responsibilities

Design, build, and optimize high-performance backend applications specializing in batch and real-time data processing. Lead technical implementation of complex initiatives while providing mentorship and architectural guidance to the engineering team.

Requirements

Requires 8+ years of professional experience with expert-level mastery of Core Java and the Spring ecosystem. Must have extensive experience with distributed data processing tools like Kafka or Spark and proficiency in both relational and NoSQL databases.

Skills

Java
Spring Boot
Apache Kafka
Apache Spark
Microservices
Distributed Systems
Hibernate
PostgreSQL
NoSQL
Docker
Kubernetes
CI/CD
TDD
JVM Tuning
RESTful APIs
gRPC

Benefits

Major Medical
Hsa
Dental
Vision
Employer-provided Group Life
Voluntary Life Insurance
Short-term Disability
Long-term Disability
401k

Visa sponsorship

Not detected in the job text

Keywords

Java 11
Java 17
Java 21
Spring Cloud
Spring Data
Spring Security
JPA
Cassandra
MongoDB
Redis
Jenkins
GitLab CI
GitHub Actions
JUnit
Mockito
AWS
Azure
GCP
Unix
Linux
Shell Scripting
OOP
SOLID
ETL
Flink
Hadoop
Event-driven Architecture
Financial Services
Banking Technology
Distributed Systems

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