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Added 18 days ago
C
Java Developer (React)
Collabera
Toronto, ON
- $90 to $102 CAD / hour
- Contract
Design, develop, and maintain backend services using Java and Spring Boot.
Added 18 days ago
PG
Test Engineer
Pacer Group
Montreal, QC
- $45 to $48 CAD / hour
- Contract
Experience with Java application development and frameworks such as Spring Boot.
Added 18 days ago
JG
Testing Engineer
J&M Group
Toronto, ON
- Full-time
Experience developing applications using Java and Java-based frameworks such as Spring Boot
Added 18 days ago
AI
QA Engineer – Performance & Automation Testing
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Montreal, QC
- Full-time
Experience developing applications using Java and Java-based frameworks such as Spring Boot.
Added 18 days ago
S
Software Engineering LMTS
Salesforce
Vancouver, BC
- Full-time
Deep knowledge of object-oriented programming languages: Java, C++, Go, C#, Ruby, Scala, Python, Node.js, or JavaScript
Added 18 days ago
M
Senior Software Engineer (Java)
Mastercard
Vancouver, BC
- Full-time
Senior Software Engineer (Java)Job Description Summary
Added 18 days ago
L
Java Developer
LTM
ON · Ontario, Canada
- $85,000 to $110,000 USD / year
- Full-time
7 years of relevant experience in Java Spring Boot and Microservices
Added 18 days ago
C
Java Developer
Citi
Mississauga, ON
- Full-time
Citi is looking for a Java Developer to join its Technology team and contribute to the design, development, and delivery of application systems that power financial services at global…
Added 18 days ago
C
Java Developer
Citi
Mississauga, ON
- Full-time
Citi is looking for a Java Developer to join its technology organisation and play a hands-on role in building, enhancing, and integrating the applications that power financial services at…
Added 18 days ago
B
Software Application Developer – Loan Servicing & AI Enablement
BMO
Toronto, ON · FCP
- Full-time
Strong Java and Spring Boot development experience.
Added 18 days ago
T
Principal Engineer - GTB Data and Platforms
TD
Toronto, ON
- Full-time
Strong hands-on development experience in modern programming languages such as Java and Python
Added 18 days ago
RL
Java Software Engineer
RedCompass Labs
Toronto, ON
- Full-time
…related to payments and the financial using knowledge about Java, Spring framework, Kafka and Cloud…
Added 18 days ago
T
Principal Engineer - GTB Data and Platforms
TD
Toronto, ON
- Full-time
Strong hands-on development experience in modern programming languages such as Java and Python
Added 18 days ago
UR
Forward Deployment Engineer
Urban Ridge Supplies
Mississauga, ON
- Full-time
…performing dependency and reachability analysis, upgrading Java and NPM runtimes, modernizing Spring and legacy middleware applications, improving CI/CD pipelines, containerizing…
Added 18 days ago
UR
Senior Forward Deployment Engineer
Urban Ridge Supplies
Mississauga, ON
- Full-time
…performing dependency and reachability analysis, upgrading Java and NPM runtimes, modernizing Spring and legacy middleware applications, improving CI/CD pipelines, containerizing…
Added 19 days ago
D
Tech Lead - Software Engineering
DataVisor
Remote, Canada
- Full-time
- Remote
Deep production experience with Java, along with working proficiency in Python and Shell scripting.
Added 19 days ago
D
Tech Lead - Software Engineering
DataVisor
Remote, Canada
- Full-time
- Remote
Deep production experience with Java, along with working proficiency in Python and Shell scripting.
Added 19 days ago
D
Tech Lead - Software Engineering
DataVisor
Remote, Canada
- Full-time
- Remote
Deep production experience with Java, along with working proficiency in Python and Shell scripting.
Added 19 days ago
D
Tech Lead - Software Engineering
DataVisor
Calgary, AB
- $130,000 to $170,000 CAD / year
- Full-time
Deep production experience with Java, along with working proficiency in Python and Shell scripting.
Added 19 days ago
D
Tech Lead - Software Engineering
DataVisor
Vancouver, BC
- $130,000 to $170,000 CAD / year
- Full-time
Deep production experience with Java, along with working proficiency in Python and Shell scripting.
Added 19 days ago
D
Tech Lead - Software Engineering
DataVisor
Toronto, ON
- $130,000 to $170,000 CAD / year
- Full-time
Deep production experience with Java, along with working proficiency in Python and Shell scripting.
Added 19 days ago
T
Engineer II - IAM Federation Services
TD
Toronto, ON
- Full-time
Hands-on experience with Python, Java, Java Spring and SQL
Added 19 days ago
FR
Senior Service Reliability Engineer
Fitch Ratings
Toronto, ON
- Full-time
You’re highly proficient in administering both Linux and Windows, and have practical, enterprise-level experience supporting IIS/.NET applications as well as Java Spring Boot services.
Added 19 days ago
T
Engineer II - IAM Federation Services
TD
Toronto, ON
- Full-time
Hands-on experience with Python, Java, Java Spring and SQL
Added 19 days ago
TC
Full-Stack Java Developer (with DB & Cloud)
TMC Canada
Montreal, QC
- Full-time
…technology stack includes PostgreSQL or MongoDB for data storage, Java (Spring Boot) for the middle tier, and Angular, React, or Ext JS for frontend…

Collabera

Java Developer (React)

Toronto, ON, Canada

$90 to $102 CAD / hour · Contract

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Job details

Pay: $90 to $102 CAD / hour
Job type: Contract
Apply by: Oct 24, 2026
Experience: 10+ years of enterprise Java development experience. (80%)
Posting language: English
Posted: Sep 24, 2026

Original job description

Title: Senior Java Engineer

Client: Investment Industry

Type: 6-month contract + opportunity to extend

Location: Downtown Toronto, ON - Hybrid (4 day/week on-site)

PR: $90-100/hr (as per experience)

Why Is This Role Open?

Client is executing a large-scale transformation to refactor a legacy monolithic application into a microservices-based architecture.

The Senior Full Stack Engineer will join a Capital Markets engineering team responsible for modernizing and rebuilding a mission-critical platform used across Public Markets. This is primarily a backend-focused role (approximately 80% backend / 20% frontend), requiring deep expertise in Java development while also contributing to React-based UI enhancements.

The successful candidate will play a key role in decomposing a legacy monolithic application into cloud-native microservices while supporting ongoing user interface enhancements for portfolio management users.

Day-to-Day Responsibilities

Refactor and decompose a large monolithic application into microservices.
Design, develop, and maintain backend services using Java and Spring Boot.
Contribute to architecture discussions, service boundaries, and technical design decisions.
Develop and deploy cloud-native applications in AWS.
Build and enhance React-based UI components
Collaborate with developers, business analysts, and Capital Markets stakeholders
Ensure systems are highly performant, secure, resilient, and scalable.
Participate in code reviews and engineering best practices.

Must-Have Skills

Backend Development

10+ years of enterprise Java development experience. (80%)
Advanced Spring Boot expertise.
Proven experience building and refactoring microservices architectures.
Experience designing and developing distributed, high-performance systems.

Frontend Development

Hands-on React development experience. (20%)
Comfortable contributing to frontend features and UI enhancements

Cloud & DevOps

Cloud- AWS experience (preferred)

Capital Markets Experience (if they don't have capital markets, should at least come from financial services/ retail banking).

Public Markets experience.
FX experience.
Equities experience.
Derivatives experience.
Understanding of front-office trading workflows.

Soft Skills

Strong analytical and problem-solving abilities.
Ability to work independently in a fast-paced engineering environment.
Strong communication and collaboration skills.

Nice-to-Haves

Experience with portfolio management or trading platforms.
AWS cloud-native services experience.
Mockito and automated testing frameworks.
Exposure to AI/ML concepts.
Experience working in highly regulated financial environments.

We may use AI-enabled and/or automated tools to support parts of our recruitment process, including application screening, interview scheduling, and candidate communications. These tools are used to enhance consistency and efficiency. All hiring decisions involve human review and are not based solely on automated processing.

The Company offers a total rewards package in accordance with all applicable federal, provincial, and local laws and requirements. Benefit eligibility and offerings vary based on role, employment status, and work location. For contractor positions, benefits are limited to those entitlements and protections required by applicable law, which may include (as applicable) vacation pay, public holidays, leaves of absence, and other legally mandated benefits or payments.

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More about this job

Responsibilities

Refactor a legacy monolithic application into cloud-native microservices, designing and maintaining high-performance Java and Spring Boot backend services deployed on AWS. Contribute to React UI enhancements, architecture decisions, code reviews, and collaboration with engineering and Capital Markets stakeholders to ensure secure, resilient, and scalable systems.

Requirements

Requires 10 or more years of enterprise Java development experience, advanced Spring Boot expertise, and proven experience building microservices and distributed systems. Candidates should also have hands-on React experience and relevant financial services experience, ideally including Public Markets, FX, equities, derivatives, or front-office trading workflows.

Skills

Java
Spring Boot
Microservices
Distributed Systems
React
AWS
Cloud-Native Development
System Architecture
Capital Markets
Public Markets
Foreign Exchange
Equities
Derivatives
Front-Office Trading Workflows
Mockito
Automated Testing

Benefits

Vacation Pay
Public Holidays
Leaves Of Absence
Other Legally Mandated Benefits Or Payments

Visa sponsorship

Not detected in the job text

Keywords

Java
Spring Boot
Microservices
Monolithic Application Refactoring
Distributed Systems
High-Performance Systems
React
AWS
Cloud-Native Applications
Capital Markets
Public Markets
Portfolio Management
Foreign Exchange
Equities
Derivatives
Front-Office Trading Workflows
Mockito
Automated Testing
Architecture Design
Service Boundaries
Code Reviews
Financial Services
Retail Banking
Regulated Financial Environments
AI/ML

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