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Added 13 days ago
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Senior Machine Learning Engineer
Fusemachines
Remote, Canada
- Contract
- Remote
…proficiency in a compiled or high-performance language (e.g., C++, Java, Scala, Go, or…
Added 13 days ago
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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 13 days ago
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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 13 days ago
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Java Spring Boot Developer
Tata Consultancy Services
Toronto, ON
- $90,000 to $110,000 CAD / year
- Full-time
Java Spring Boot Developer (AI-Assisted Development)
Added 13 days ago
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Java Application Developer
IT Connex
Toronto, ON · Greater Toronto Area, Canada
- Contract
Roles: Full Stack Java, Back-End Java, and Front-End Developer
Added 13 days ago
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Senior Software Developer
Plusgrade
Montreal, QC
- Full-time
You build and deploy clean, testable Java code in cloud environments while taking the lead on architecture discussions and technical decisions.
Added 13 days ago
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Software Developer
Plusgrade
Montreal, QC
- Full-time
Our payment ecosystem spans 13 critical sub-domains and ships around 2,400 merged PRs every year. We need a backend developer who wants to own the checkout engine end to end, not just clear…
Added 13 days ago
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Engineering Manager
Plusgrade
Montreal, QC
- Full-time
Added 13 days ago
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Engineering Manager
Plusgrade
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Added 13 days ago
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GCP Architect
ZENITH INFOTEK LLC
Toronto, ON
- Full-time
Knowledge of programming languages such as Python, Java, or Go.
Added 13 days ago
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Software Engineer-Global Payments Engineering
Scotiabank
Toronto, ON
- Full-time
…and implementing applications using Shell Scripting, Python, java technologies (e.g. SpringBoot, Hibernate, JPA, etc.) and majorly IBM Managed File Transfer to support business requirements…
Added 13 days ago
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Java/python developer
Pacer Group
Toronto, ON
- Full-time
Design, develop, test, deploy, and maintain secure, scalable microservices, backend applications, and RESTful APIs using Java, Spring Boot, and Python.
Added 13 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 13 days ago
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WiSE Winter 2027 Co-op: Business and Technology Consultant (Undergraduate Co-op)
CGI
Halifax, NS
- Full-time
Software Development (Java, Python, and other modern languages)
Added 13 days ago
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Winter 2027 Co-op: Technical Development Consultant (Master's Co-op)
CGI
Halifax, NS
- Full-time
…areas, including Quality Engineering, Artificial Intelligence, Java Development, Data Analytics, Process Automation, Cyber Security, and Cloud…
Added 13 days ago
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Winter 2027 Co-op: Business and Technology Consultant (Undergraduate Co-op)
CGI
Halifax, NS
- Full-time
Software Development (Java, Python, and other modern languages)
Added 13 days ago
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Java Developer (React)
Collabera
Toronto, ON
- $90 to $102 CAD / hour
- Contract
…(approximately 80% backend / 20% frontend), requiring deep expertise in Java development while also contributing to React-based UI…
Added 13 days ago
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Test Engineer
Pacer Group
Montreal, QC
- $45 to $48 CAD / hour
- Contract
Experience with Java application development and frameworks such as Spring Boot.
Added 13 days ago
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Software Developer
Evertz
Burlington, ON
- Full-time
Added 13 days ago
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Testing Engineer
J&M Group
Toronto, ON
- Full-time
Experience developing applications using Java and Java-based frameworks such as Spring Boot
Added 13 days ago
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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 13 days ago
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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 13 days ago
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Software Developer
Evertz Microsystems Limited
Burlington, ON
- Full-time
Added 13 days ago
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Programming Analyst
BuzzClan
Fredericton, NB
- Contract
An experienced Programmer Analyst with strong hands-on experience in CA Gen, PL/SQL, Java, Oracle, and SQL Server, supporting and enhancing enterprise healthcare applications.
Added 13 days ago
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Senior Software Engineer (Java)
Mastercard
Vancouver, BC
- Full-time
Senior Software Engineer (Java)Job Description Summary

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.

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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