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Added 1 month ago
C
Staff Software Engineer, Fullstack
Cloudjobs
Toronto, ON
- Full-time
As a staff software engineer in Reverse ETL, you’ll be on the front lines of integrating data activation capabilities into the Fivetran product along every dimension – UI, authentication,…
Added 1 month ago
C
Engineering Manager - API
Craver
Remote, Canada
- Full-time
- Remote
Senior-level backend engineer who maintains deep, hands-on proficiency - you contribute code, review PRs, and lead design discussions as a matter of course
Added 2 months ago
C
Engineering Manager - API
Craver
Canada
- Full-time
Senior-level backend engineer who maintains deep, hands-on proficiency - you contribute code, review PRs, and lead design discussions as a matter of course
Added 1 month ago
R
Senior Software Development Engineer (SDE3) – Customer Data Platform
Remitly
Burnaby, BC
- Full-time
We are looking for a Senior Software Development Engineer (SDE3) to join the Customer Data Platform team within the Identity & Trust organization.
Added 1 month ago
GM
Senior Android Developer - Trailering Application
General Motors
Markham, ON · Oshawa, ON
- Full-time
GM is looking to hire a Senior Android Software Engineer to lead design, development, and long‑term maintenance of in‑vehicle infotainment (IVI) apps on Android Automotive OS (AAOS) for…
Added 1 month ago
M
Senior Full-Stack Software Engineer
Manulife
Toronto, ON
- Full-time
At Manulife, we're transforming how technology supports investment decision-making. As a Senior Full-Stack Engineer, you'll work alongside talented engineers, architects, and business…
Added 1 month ago
ND
Tech Consultant - Senior Full-Stack Engineer
NTT DATA North America
Vancouver, BC
- Other
We are seeking an experienced Senior Full Stack Engineer to design, develop, and deliver scalable, secure, and high-performing enterprise applications. The ideal candidate should have…
Added 1 month 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 1 month ago
ES
Offensive Security Engineer
Epsilon Solutions Ltd.
Toronto, ON
- Contract
As “Principal Consultant, Agentic AI Cybersecurity Engineer” you will work hands-on alongside our cybersecurity engineering and application security teams to build, operate, and advance the…
Added 1 month ago
C
Ingénieur(e) solutions
ChapsVision
Montreal, QC
- Full-time
We are looking for a Solutions Engineer to join our growing team. This is a hybrid technical and client-facing role responsible for architecting, customizing, and deploying Sinequa’s…
Added 1 month ago
Senior Software Engineer
Questrade Financial Group
Toronto, ON
We’re looking for our next Senior Software Engineer. Could It Be You?
Added 1 month ago
RT
Sr Integration Engineer (Intelligent Automation)
Russell Tobin
Toronto, ON
- $90 to $100 CAD / hour
- Contract
Position: Sr Integration Engineer (Intelligent Automation)
Added 1 month ago
T
Senior Software Engineer
Tactable
Toronto, ON
- Full-time
The Role: Senior Software Engineer (Cloud, Data & APIs)
Added 1 month ago
MM
Senior Software Engineer
Mohawk Medbuy Corporation
Toronto, ON · Greater Toronto Area, Canada
- Full-time
We are currently recruiting for a Senior Software Engineer to support our IT – Application Development team. This role can be based out of our Toronto, London or Burlington offices.
Added 1 month ago
IT - Senior Software Engineer
Mohawk Medbuy Corporation (MMC)
Burlington, ON · London, ON · Toronto, ON
We are currently recruiting for a Senior Software Engineer to support our IT – Application Development team.
Added 1 month ago
P
Senior Software Engineer -Waterloo
PointClickCare
Kitchener, ON
- Full-time
For Hybrid Roles: If this role is Hybrid, there will be an expectation to reside within commutable distance to the office/location specified in the job listing. This will include, but not…
Added 1 month ago
A
Développeur Senior SRE
Astek
Montreal, QC
- Full-time
Senior Developer SRE "Site Reliability Engineer"
Added 1 month ago
P
Senior Software Engineer -Waterloo
PointClickCare
Waterloo, ON
- $142,000 to $158,000 CAD / year
- Full-time
For Hybrid Roles: If this role is Hybrid, there will be an expectation to reside within commutable distance to the office/location specified in the job listing. This will include, but not…
Added 1 month ago
IG
Sr. Integration Architect - Automation
Infotree Global Solutions
Toronto, ON
- Contract
Job Title: Sr Integration Engineer (Intelligent Automation)
Added 1 month ago
KR
Senior Java Software Engineer
KTek Resourcing
Montreal, QC
- Contract
Design, develop, and maintain scalable applications using Java, JavaScript, and Spring Boot frameworks.
Added 1 month ago
IF
Principal, Software Engineering – InsurTech Claims & Billing Core Systems
Intact FC
Toronto, ON · Montreal, QC
- Full-time
Flexible work arrangements and a hybrid work model
Added 1 month ago
Staff/ Sr. Staff HW Test Automation Engineer
Lightmatter
Toronto, ON
As a Hardware Test Automation Engineer you'll have the opportunity to work across some combination of: an internal test software framework (Java/Python-based), industry-standard ATE test…
Added 1 month ago
L
Staff/ Sr. Staff HW Test Automation Engineer
Lightmatter
Toronto, ON
- Full-time
As a Hardware Test Automation Engineer you'll have the opportunity to work across some combination of: an internal test software framework (Java/Python-based), industry-standard ATE test…
Added 1 month ago
L
Staff/ Sr. Staff HW Test Automation Engineer
Lightmatter
Toronto, ON
- Full-time
As a Hardware Test Automation Engineer you'll have the opportunity to work across some combination of: an internal test software framework (Java/Python-based), industry-standard ATE test…
Added 1 month ago
C
Senior Java Engineer
Cognizant
Toronto, ON
- Full-time
We are seeking a highly skilled Senior Java Engineer with strong hands‑on experience building backend services using Java, Spring, and Kafka. This role is deeply technical and requires…

TSR Consulting

Senior Java Software Engineer

Mississauga, ON, Canada

Contract

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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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