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Added 1 month ago
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Senior Data Engineer
BMO
Toronto, ON · SCC
- Full-time
Experience with SSIS, Glue, cloud storage and computing services (e.g. AWS, Azure), Hadoop, Netezza
Added 1 month ago
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Senior Full Stack Engineer
Eleven-X
Waterloo, ON
- Full-time
We are seeking a full-time Senior Full Stack Engineer to own product capabilities end to end across our eXactPark cloud solution. You will shape customer-facing experiences and the backend…
Added 1 month ago
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Senior Backend Engineer
Eleven-X
Waterloo, ON
- Full-time
We are seeking a full-time Senior Backend Engineer to strengthen the systems behind our eXactPark cloud solution. You will own backend capabilities from technical design through production…
Added 1 month ago
EW
Software Engineer – Wi-Fi
Eagle Wireless
BC · British Columbia, Canada
- $75,000 to $100,000 CAD / year
- Full-time
We are looking for a talented Software Engineer – Wi-Fi to design, develop, and maintain Linux-based embedded systems for IoT devices. This role focuses on Wi-Fi connectivity, networking…
Added 1 month ago
TC
Senior Java Software Engineer
TSR Consulting
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 1 month ago
M
Firmware Engineer (Contractor Position)
MistyWest
Vancouver, BC
- Contract
We are hiring a Firmware Engineer (Contractor) to support an embedded product build. You will help develop core firmware features, including device sensing, power management, connectivity,…
Added 1 month ago
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Senior DevOps Engineer
Bounteous
Montreal, QC
- Full-time
We are seeking a Senior DevOps Engineer to join our Release Management team in
Added 1 month ago
JG
EUC Infrastructure Engineer
J&M Group
Toronto, ON
- Full-time
Networking & Security: DNS, firewall requests, load balancers, certificates, subnets, IP management, network security groups
Added 1 month ago
M
Firmware Engineer (Contractor Position)
MistyWest
Vancouver, BC
- Contract
We are hiring a Firmware Engineer (Contractor) to support an embedded product build. You will help develop core firmware features, including device sensing, power management, connectivity,…
Added 1 month ago
CG
Senior DevOps/SRE Engineer
Credit Genie
Toronto, ON
- Full-time
As a Senior DevOps / SRE Engineer on this team, you'll own reliability and deployments across our AWS and Kubernetes environment, take real ownership of our compliance work, and help build…
Added 1 month ago
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Firewall Engineer
Tekshapers
Toronto, ON
- Full-time
We are looking for deep expertise in Fortinets security stack with a strong command of public cloud networking ecosystem (Azure/AWS/OCI).
Added 1 month ago
Security Engineer , AI Security
Amazon
Vancouver, BC
…ground up? The Amazon AI Security team is looking for a Security Engineer to design security controls and validate that our AI and machine learning (ML) services, applications, and emerging…
Added 1 month ago
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Cybersecurity Engineer, Entry Level (Canada)
Jobright.ai
Canada
- Full-time
…job outcomes. They are seeking an entry-level Cybersecurity Engineer to monitor security incidents, perform vulnerability assessments, and collaborate with engineering teams to enhance…
Added 1 month ago
TI
EUC Infrastructure Engineer
Themesoft Inc.
Toronto, ON
- Contract
Networking & Security: DNS, firewall requests, load balancers, certificates, subnets, IP management, network security groups
Added 1 month ago
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Channel Account Manager
Solink
Remote, Canada
- $240,000 to $270,000 CAD / year
- Full-time
- Remote
Our cloud-based platform integrates seamlessly with your existing cameras and systems, turning them into intelligent sensors that detect and interpret key moments. This empowers teams to…
Added 1 month ago
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Engineer, Sensor - Mac, Linux, or Windows (Hybrid)
CrowdStrike
Toronto, ON
- Full-time
The cloud component aggregates sensor telemetry for each customer’s network, correlates malicious behavior across multiple machines, and presents our customers’ operations teams with a…
Added 1 month ago
Senior Specialist, IT Infrastructure
Celestica International LP
Toronto, ON
We are seeking a highly skilled, hands-on Technical Lead to design, build, nd actively engineer our enterprise cloud and hybrid platform infrastructure. The candidate will directly write…
Added 1 month ago
MG
Senior Systems Engineer
Mobility Global
London, ON
- $97,500 to $130,000 CAD / year
- Full-time
Join our winning team as a Senior Systems Engineer
Added 1 month ago
EB
Lead AI Platform Engineer
EQ Bank
Toronto, ON
- Full-time
The Lead AI Platform Engineer is accountable for technical leadership, engineering excellence, reliability, operability, and the controlled enablement of the organization’s enterprise AI…
Added 1 month ago
EB
Lead AI Platform Engineer
EQ Bank | Canada's Challenger Bank
Toronto, ON
- Full-time
The Lead AI Platform Engineer is accountable for technical leadership, engineering excellence, reliability, operability, and the controlled enablement of the organization’s enterprise AI…
Added 1 month ago
Principal Cloud Platform Engineer
Hasbro
Montreal, QC
As a Principal Cloud Infrastructure Engineer, you will define and drive the governance model and automation strategy for cloud infrastructure. This includes setting policy-as-code…
Added 1 month ago
WO
Principal Cloud Platform Engineer
Wizards of the Coast
Montreal, QC
- Full-time
As a Principal Cloud Infrastructure Engineer, you will define and drive the governance model and automation strategy for cloud infrastructure. This includes setting policy-as-code…
Added 1 month ago
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Staff Software Engineer - Networking & DNS Infrastructure
BlueCat
Toronto, ON
- Full-time
We're looking for a systems engineer to build and operate high-throughput, low-latency network infrastructure written in Rust. You'll work on the core data plane of a production DNS…
Added 1 month ago
CP
IT Support Technician III
Cosmetic Physician Partners
Westmount, QC
- Full-time
…rebuilding a clinic's phone tree, and setting up a new site's network. You'll escalate infrastructure, security, and architecture work to our Senior IT…
Added 1 month ago
D
Cloud, Automation & AI Engineer Consultant
Deloitte
Toronto, ON
- Full-time
As a Cloud, Automation & AI Infrastructure Engineer, you will play a key role in designing, implementing, and modernizing cloud and AI-enabled technology platforms that support some of…

TSR Consulting

Senior Java Software Engineer

Mississauga, ON, Canada

Contract

Apply About employer

Applications open in a new tab.

Job details

Job type: Contract
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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