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Added 9 days ago
TC
Full Stack Java Developer
Tata Consultancy Services
Toronto, ON
- $90,000 to $110,000 CAD / year
- Full-time
…is enabling its clients to transform themselves across the full AI stack, from infrastructure to…
Added 9 days ago
R
Application Security Consultant - SCA (Global Security)
RBC
Toronto, ON
- Full-time
We are seeking a talented Intermediate Developer to join our Application Security team and serve as a bridge between security and development. You will provide technical execution and…
Added 9 days ago
Software Dev Engineer II, 3P AV Measurement
Amazon
Toronto, ON
…solution that will help steer the future of advertising. Our stack includes Amazon Clean Room, Spark (Scala), EMR, S3, Elasticsearch, JVM-based services and job schedulers, and cluster…
Added 9 days ago
TC
Senior Springboot Developer
Tata Consultancy Services
Toronto, ON
- $90,000 to $110,000 CAD / year
- Full-time
…is enabling its clients to transform themselves across the full AI stack, from infrastructure to…
Added 9 days ago
R
JavaScript Full Stack Developer
Rebel
Ottawa, ON
- $60,000 to $100,000 CAD / year
- Full-time
Position Title: JavaScript Full Stack Developer Intermediate
Added 9 days ago
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Senior Machine Learning Engineer
Fusemachines
Remote, Canada
- Contract
- Remote
…States, Canada, and the Dominican Republic) and more than 450 full-time employees, Fusemachines brings global AI expertise to transform companies worldwide. Founded in 2013, Fusemachines is…
Added 9 days ago
S
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 9 days ago
T
Software Engineer II
TD
Toronto, ON
- Full-time
Back-End (Server side): Proficiency in Java, Spring Boot, Spring framework, Restful webservices, asynchronous programming and authentication (JWT, OAuth)
Added 9 days ago
TC
Java Spring Boot Developer
Tata Consultancy Services
Toronto, ON
- $90,000 to $110,000 CAD / year
- Full-time
…is enabling its clients to transform themselves across the full AI stack, from infrastructure to…
Added 9 days ago
IC
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 days ago
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Engineering Manager
Plusgrade
Montreal, QC
- Full-time
Take ownership of three high-throughput engineering teams that power critical travel infrastructure, with full autonomy to elevate software practices and grow top talent.
Added 9 days ago
P
Engineering Manager
Plusgrade
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Take ownership of three high-throughput engineering teams that power critical travel infrastructure, with full autonomy to elevate software practices and grow top talent.
Added 9 days ago
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Full Stack Engineer
Luxoft
Toronto, ON
- Full-time
Experience in Java in an enterprise environment, covering the whole development life cycle
Added 9 days ago
C
Winter 2027 Co-op: Technical Development Consultant (Master's Co-op)
CGI
Halifax, NS
- Full-time
Strong understanding of full-stack development
Added 9 days ago
C
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 9 days ago
C
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 9 days ago
C
Senior Automation Developer
Citi
Mississauga, ON
- Full-time
Operating within a high-velocity Agile Scrum environment, you will collaborate closely as full-stack automation application developers and with product owners to implement shift-left…
Added 10 days ago
W
Senior Software Engineer (Full Stack)
Workday
Vancouver, BC · Canada, BC, Vancouver
- Full-time
…bring together product leaders, machine learning engineers, and full-stack builders to create intelligent agents used by millions of people every day. This is production-grade AI - deeply…
Added 10 days ago
RL
Quality Assurance Automation Engineer
RedCompass Labs
Toronto, ON
- Full-time
Build and maintain automated tests across the full stack – UI, API, middleware and message layers – covering component, integration and end-to-end transaction flows
Added 10 days ago
RL
Java Software Engineer
RedCompass Labs
Toronto, ON
- Full-time
Its flagship Payments Expert Agent is an AI solution purpose-built for the full payments modernization software development lifecycle. Trained on decades of deep payments expertise and more…
Added 10 days ago
AC
Full Stack Engineer
ALTEN Canada
ON · Ontario, Canada
- Other
When needed, build hands-on functionality: Angular frontend, Java/Jakarta EE backend
Added 10 days ago
M
Spécialiste en développement logiciel, IA et modernisation/Software Development Specialist, AI & Modernization
McKesson
Montreal, QC
- Full-time
Java, C#, Python ou autres langages de programmation modernes
Added 10 days 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 10 days ago
UR
Forward Deployed Engineer (FDE) (Mid/Senior Level)
Urban Ridge Supplies
Toronto, ON
- Full-time
…business impact. This work spans configuration, customization, and full-stack deployment - shipping solutions customers depend…
Added 10 days ago
UR
Forward Deployed Engineer (FDE) (Mid/Senior Level)
Urban Ridge Supplies
Toronto, ON
- Full-time
…business impact. This work spans configuration, customization, and full-stack deployment - shipping solutions customers depend…

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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