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Added 8 hours ago
JavaScript Full Stack Developer
Rebel
Ottawa, ON
$60,000 to $100,000 CAD / year
Full-time
As an Intermediate JavaScript Full Stack Developer, you’ll help build and evolve Rebel’s customer-facing products and internal services that power our domain and hosting platform. You’ll…
Added 8 hours ago
Senior Full-Stack Developer [Security & Risk Products]
ScalePad
Vancouver, BC
Full-time
As a Senior Full-Stack Developer, you will be responsible for developing entirely new products and innovating within our existing technology stack. This will involve research, analysis,…
Added 8 hours ago
Software Engineer II
TD
Toronto, ON
Full-time
As a candidate, you are encouraged to ask compensation related questions and have an open dialogue with your recruiter who can provide you more specific details for this role.
Added 8 hours ago
Java Tech Lead
K&K Global Talent Solutions INC.
Mississauga, ON
$110,000 to $120,000 CAD / year
Full-time
Lead end-to-end Java Full Stack application design and development.
Added 8 hours ago
Java Technical Lead
Zodiac Solutions, Inc
Mississauga, ON
Full-time
Lead end-to-end application design and development using Java Full Stack technologies.
Added 9 hours ago
Java Application Developer
IT Connex
Toronto, ON · Greater Toronto Area, Canada
Contract
Roles: Full Stack Java, Back-End Java, and Front-End Developer
Added 9 hours ago
Senior Full Stack Java Engineer
PRI Global
Toronto, ON
Contract
Deep understanding and significant experience of Java, JVM, and Spring ecosystem
Added 9 hours ago
Full Stack Engineer
Luxoft
Toronto, ON
Full-time
Design software solutions by interacting with portfolio managers, traders, operations staff and peers to understand requirements.
Added 10 hours ago
Java Developer (React)
Collabera
Toronto, ON
$90 to $102 CAD / hour
Contract
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…
Added 11 hours ago
Senior Engineering Manager
Citi
Mississauga, ON
Full-time
Full-Stack / Distributed Systems Mastery: Deep technical foundation in modern programming languages and frameworks (e.g., Java/Spring Boot, Python, React/Angular), microservices…
Added 14 hours ago
Senior Software Developer – MS Dynamics 365 CRM
Joblinxsapp
Toronto, ON
Full-time
The Senior Software Developer will be responsible for configuring and developing Microsoft Dynamics 365 CRM to support Registration and Permit workflows for Ministry back-office users and…
Added 14 hours ago
Java Full Stack Developer – React
VEGA Intellisoft Pvt Ltd
Mississauga, ON
Full-time
We are looking for an experienced Java Full Stack Developer with strong React.js expertise to support enterprise application development. The ideal candidate should have strong hands-on…
Added 16 hours ago
Senior Software Engineer, Full-Stack Applications - Ratings Technology (Toronto)
Fitch Group
Toronto, ON
Lead transformative full-stack applications with AI at the core – Drive architecture and implementation of net-new applications using Java/Springboot, Python, and REACT that integrate…
Added 16 hours ago
Full Stack Software Developer
EPITEC
Ottawa, ON
Contract
Approximately 4¿7 years of Full Stack software development experience.
Added 16 hours ago
Full Stack Software Developer
EPITEC
Ottawa, ON
Contract
Approximately 4¿7 years of Full Stack software development experience.
Added 17 hours ago
Principal Quality Architect
Urban Ridge Supplies
Toronto, ON
Full-time
This position is for a Principal Quality Architect who embeds directly with customers as a hands-on quality partner while also building production features. The role blends test engineering…
Added 19 hours ago
Full Stack Developer
Sundayy
Canada
Full-time
We are seeking a talented and motivated Full Stack Developer to join our high-impact team responsible for leading RBC’s call centre and branch technology transformation. In this role, you…
Added 1 day ago
Entry Level Full-Stack Developer
mthree Recruiting Portal
Montreal, QC
Strong programming experience with Java and Angular/AngularJS/React
Added 1 day ago
Associate or Vice President Full Stack Engineer
BMO Capital Markets
Toronto, ON
Part-time
We are seeking an exceptional Full Stack Engineer to join our Data Cognition Team at BMO Capital Markets. In this pivotal role, you will architect, develop, and implement innovative…
Added 1 day ago
Senior Full Stack Engineer (Azure Cloud Platform)
HCLTech
ON · Ontario, Canada
$60 to $75 CAD / hour
Contract
We are looking for a hands-on Senior Cloud-Native Full Stack Engineer to design, build, and support secure, scalable applications on Microsoft Azure. This role combines modern full-stack…
Added 1 day ago
AI-Native Full Stack Developer - Senior Manager
Accenture
Toronto, ON · Ottawa, ON · Montreal, QC · Vancouver, BC · Calgary, AB
Full-time
Hands-on full stack development experience using modern front-end and back-end technologies, such as React or Angular and Node.js, Python, Java, or equivalent.
Added 1 day ago
Senior Software Engineer
Dexian
Mississauga, ON
Contract
Experience working with Java, Spring Boot, and microservices architecture (knowledge of Core Java a plus)
Added 1 day ago
Application Support Engineer
Randstad Digital
Oakville, ON
Full-time
Development & Tech Stack: Hands-on troubleshooting experience with applications built on Java, Angular, React, Node.js, Apache Camel, Python, or TypeScript.
Added 1 day ago
Full-Stack Java Developer (with DB & Cloud)
TMC Canada
Montreal, QC
Full-time
…designed for cloud-native deployments. The standard technology stack includes PostgreSQL or MongoDB for data storage, Java (Spring Boot) for the middle tier, and Angular, React, or Ext JS…
Added 1 day ago
Software Developer - Full Stack - Senior
Joblinxsapp
Toronto, ON
Full-time
We are seeking a Senior Full Stack Software Developer with extensive experience in building large-scale, multi-client web applications. The ideal candidate will have deep expertise in Java,…

Collabera

Java Developer (React)

Toronto, ON, Canada

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

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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.

Apply About employer

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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