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Added 20 days ago
Senior Technical Manager
Loblaw Companies Limited
Toronto, ON
Full-time
…This role involves leveraging advanced technologies, including Java/Spring Boot microservices, Google Cloud Platform with Kubernetes, and modern front-end frameworks such as React. Here,…
Added 7 days ago
Lead Platform Engineer
RBC
Toronto, ON
Full-time
As part of our team, you will play a critical role in shaping the future of our internal developer platform, designing intelligent automation systems, and integrating AI capabilities into…
Added 4 days ago
Senior Manager, Tokenized Deposits Off-Chain Orchestration / Integration Layer Delivery
TD
Toronto, ON
Full-time
Drive prospective systems design and lead technical approaches for implementing business requirements
Added 4 days ago
Senior Manager, Tokenized Deposits On-Chain Orchestration / Integration Layer Delivery
TD
Toronto, ON
Full-time
Drive prospective systems design and lead technical approaches for implementing business requirements
Added 10 days ago
Lead Software Engineer
RBC
Toronto, ON
Full-time
As a Lead Software Engineer at RBC, you will play a key role in designing, developing, and delivering software solutions of high complexity. This role emphasizes independence, adaptability,…
Added 7 days ago
Lead Full Stack Developer
RBC
Toronto, ON
Full-time
A Lead Full Stack Developer is responsible for designing, developing and maintaining legacy and "Cloud First" applications written primarily in C# and focused on .Net Core and Azure cloud…
Added 5 days ago
Senior Business System Analyst
RBC
Toronto, ON
Full-time
Analysis and document Business and Functional requirements from business stakeholders. Lead and facilitate collaborative sessions with business stakeholders to drive requirements discovery,…
Added 5 days ago
Senior Manager, Engineering & Build
RBC
Toronto, ON
Full-time
As a Senior Manager, Engineering & Build (Hands-On Leader), you will lead an engineering team while contributing ≈50% hands-on to design and deliver cloud-native, governed, and reliable…
Added 4 days ago
Senior Manager, Back-End Development
RBC
Toronto, ON
Full-time
As part of a major payment modernization initiative, Royal Bank of Canada is seeking a hands-on Senior Manager to lead a team of backend developers while actively contributing to code…
Added 4 days ago
Senior Technology Manager, Loan Servicing Technology
BMO
Toronto, ON · FCP
Full-time
We are seeking a Senior Technology Manager to lead the Loan Servicing Technology portfolio supporting critical lending platforms and services within Commercial and Corporate Banking.
Added 6 days ago
Technology Development and Innovation Manager
BMO
Toronto, ON · FCP
Full-time
You will lead the design, development, and evolution of scalable enterprise solutions while working across the full software development lifecycle in a dynamic, innovation-driven…
Added 4 days ago
Senior Technology Manager
BMO
Toronto, ON · FCP
Full-time
You will lead high-performing teams, partner across the organization, and ensure technology delivery aligns with business priorities, customer needs, and financial goals.
Added 5 days ago
Senior Application Developer
BMO
Calgary, AB · GCS
…complex, enterprise‑grade applications and services. You will lead end‑to‑end technical solutions, guide teams through ambiguity, and ensure the delivery of secure, scalable, and…
Added 8 days ago
QNX Senior Manager, IDE & Tools Team
BlackBerry
Ottawa, ON
Full-time
QNX is seeking an accomplished Senior Software Engineering Manager to lead the design, development, and verification of our Development Tools suite and the QNX Software Center. This role is…
Added 8 days ago
QNX Senior Manager, IDE & Tools Team
BlackBerry QNX
Ottawa, ON
Full-time
QNX is seeking an accomplished Senior Software Engineering Manager to lead the design, development, and verification of our Development Tools suite and the QNX Software Center. This role is…
Added 1 month ago
Odoo Developer
OERP Canada
Toronto, ON
Internship
The developer team is responsible for reviewing and writing and testing code within implementations and customization on customer systems, helping them streamline their business with OERP…
Added 2 days ago
QA Lead – Automation & Agile
CGI
Toronto, ON
Full-time
We are seeking an experienced QA Lead – Automation & Agile Delivery with strong hands-on test automation expertise and proven experience working within Agile, squad-based delivery…
Added 2 days ago
PowerBI Developer
CGI
Toronto, ON
Full-time
CGI is seeking an experienced Application Developer specializing in Microsoft Power BI to support business and technical reporting. The role will focus on gathering and analyzing business…
Added 2 days ago
Software Engineer
Actalent
Ottawa, ON
Contract
Lead multidisciplinary teams to deliver high-fidelity, intelligent defense systems, providing clear technical direction and coordination across stakeholders.
Added 3 days ago
Senior Software Engineer - Backend
Microsoft
Vancouver, BC
Full-time
Lead design and implementation of scalable, high-performance backend systems operating under strict latency and reliability requirements.
Added 3 days ago
Cloud & AI Apps Solution Engineer
Microsoft
Calgary, AB
Full-time
Lead customer engagements focused on Agentic AI and AI application platforms, guiding technical strategy, solution adoption, and digital transformation initiatives.
Added 2 days ago
Knowledge Specialist, Deloitte Global Knowledge Services
Deloitte
Toronto, ON
Full-time
…professionals reach across disciplines and borders to develop and lead global initiatives. We deliver strategic programs and services that unite our…
Added 2 days ago
Software Development Manager
EDealer
Canada
Full-time
We are looking for a hands-on Software Development Manager to lead one of our engineering teams within EDealer, reporting to the Sr. Director of Product and Engineering. This is a role for…
Added 3 days ago
Associate Director DevOps Developer
RBC
Bedford, QC
Full-time
We are building a world-class DevOps platform for QTS and Capital Markets at RBC. As a Technical Lead, you will drive the strategy and execution of this platform, enabling application teams…
Added 2 days ago
IT Project Manager
Pan American Silver Corp.
Vancouver, BC
$120,000 to $130,000 CAD / year
Full-time
Lead end‑to‑end project lifecycle - from initial requirements gathering and scoping to deployment and post‑implementation review.

TSR Consulting

Senior Java Backend Developer

Mississauga, ON, Canada

Pay: $70 to $75 CAD / hour
Job type: Contract
Apply by: Oct 17, 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 17, 2026

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Original job description

Job Title: Senior Java Backend Developer

Location: Mississauga, ON (Hybrid 3 days/week)

Duration: Contract - 6 months

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.

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

The role involves designing, building, and optimizing high-performance backend applications for batch and real-time data processing. You will lead technical implementation, drive architecture, and mentor other engineers while ensuring code quality and system scalability.

Requirements

Candidates must have 8+ years of professional experience in Java-based backend architectures and deep expertise in Core Java, concurrency, and distributed systems. Proficiency in the Spring ecosystem, data streaming frameworks, and database management is required.

Skills

Core Java
Spring Boot
Apache Kafka
Apache Spark
Distributed Systems
Multithreading
JVM Performance Tuning
SQL
NoSQL
Docker
Kubernetes
CI/CD
Test-Driven Development
RESTful APIs
gRPC
Hibernate

Visa sponsorship

Not detected in the job text

Keywords

Java 11
Java 17
Java 21
Spring Cloud
Spring Data
Spring Security
PostgreSQL
MySQL
Oracle
Cassandra
MongoDB
Redis
Flink
Hadoop
Jenkins
GitLab CI
GitHub Actions
JUnit
Mockito
ETL
Microservices
Event-driven
Garbage collection
Heap analysis
Infrastructure-as-code

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