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Added 37 mins ago
Cloud Platform Engineer
Swoon
Toronto, ON
Contract
We are seeking a Cloud Platform Engineer to join our Infrastructure-focused Platform Engineering team. In this role, you will work closely with senior platform engineers and…
Added 37 mins ago
Senior Full Stack Java Engineer
PRI Global
Toronto, ON
Contract
Experience of Cloud Native Development targeting a major Cloud Provider
Added 39 mins ago
Senior DevOps Engineer
Tetra Digital Group
Toronto, ON
$200,000 to $300,000 CAD / year
Full-time
6+ years in DevOps, SRE, platform, or cloud infrastructure engineering, including production ownership of systems where failure had real consequences
Added 1 hour ago
Senior AI Engineer – Claims Summarization & Agentic AI
Cognizant
Toronto, ON
Full-time
We are seeking a highly skilled and hands-on Senior AI Engineer to design, develop, and deploy Agentic AI solutions for insurance claims processing. The ideal candidate will build…
Added 1 hour ago
Senior Data Engineer - Toronto
Trisura
Toronto, ON
Full-time
We are currently seeking a driven and collaborative Senior Data Engineer to join our forward-thinking Data and Analytics team.
Added 1 hour ago
Senior Data Platform Engineer - Toronto
Trisura
Toronto, ON
Full-time
As a Senior Data Platform Engineer on our Data & Analytics Team, you will be a hands-on technical leader responsible for designing, implementing, administering, monitoring, and continuously…
Added 1 hour 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 1 hour ago
Full Stack Engineer
Grand Software Solutions
Toronto, ON
Full-time
Knowledge of current market technical trends, including Cloud, Cognitive, Digital, Microservices / APIs
Added 1 hour ago
Test Engineer
Ardent SoftSol Inc.
Montreal, QC
Contract
Contribute to DevOps automation and improvements.
Added 2 hours ago
Testing Engineer
J&M Group
Toronto, ON
Full-time
Contribute to DevOps automation and improvements.
Added 2 hours ago
QA Engineer – Performance & Automation Testing
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Montreal, QC
Full-time
Contribute to DevOps automation and improvements.
Added 2 hours ago
Data Science Developer
Transit
Montreal, QC
$90,000 to $125,000 CAD / year
Full-time
…hybrid working arrangement before; or (2) are a senior data engineer currently yearning for the (metaphorical) white lab coat that will let you conduct lots of “data science-y” experiments…
Added 2 hours ago
Performance Test Engineer
Envision Technology Solutions
Montreal, QC
Contract
Cloud native technology experience, preferably Microservice-based architecture
Added 3 hours ago
Senior Java Software Engineer
PRI Global
Toronto, ON
Contract
Experience of Cloud Native Development targeting a major Cloud Provider
Added 3 hours ago
Kafka Platform Engineer/Admin
K&K Global Talent Solutions INC.
ON · Ontario, Canada
Full-time
Experience with DevOps, CI/CD, infrastructure automation, and cloud platforms.
Added 3 hours ago
DevOps Engineer, New Grad
Jobright.ai
Canada
Full-time
…accelerating your route to the best job outcomes. As a New Grad DevOps Engineer, you will help build and operate the infrastructure behind our AI-powered job search platform, focusing on…
Added 3 hours ago
Test Engineer
LanceSoft, Inc.
Montreal, QC
$45 to $50 CAD / hour
Contract
Contribute to DevOps automation and improvements.
Added 4 hours ago
Platform Engineer
SPECTRAFORCE
Toronto, ON
$100 to $110 CAD / hour
Contract
We are seeking an experienced Platform Engineer to support a global transaction banking platform within a large financial services environment. This role will focus on platform engineering,…
Added 4 hours ago
Senior Software Engineer – DevTest / QA Automation
EngRadar
Toronto, ON
Full-time
The role requires an engineer who can leverage AI assisted development tools and coding agents to accelerate automation, analyze existing codebases, generate and validate test scenarios,…
Added 4 hours ago
Senior Software Engineer
Zodiac Solutions, Inc
Montreal, QC
Full-time
We are seeking a highly motivated and experienced Software Engineer with strong expertise in Core Java, Apache Spark, Python, SQL, and Linux to design, develop, and support scalable…
Added 4 hours ago
Technical Architect- AI
Mphasis
Toronto, ON
Full-time
Google Cloud Professional Machine Learning Engineer
Added 4 hours ago
Senior Data Engineer - Toronto
Trisura Guarantee Insurance Company
Toronto, ON
We are currently seeking a driven and collaborative Senior Data Engineer to join our forward-thinking Data and Analytics team.
Added 4 hours ago
Senior Data Platform Engineer - Toronto
Trisura Guarantee Insurance Company
Toronto, ON
As a Senior Data Platform Engineer on our Data & Analytics Team, you will be a hands-on technical leader responsible for designing, implementing, administering, monitoring, and continuously…
Added 4 hours ago
Senior Software Engineer (Full Stack)
Workday
Vancouver, BC · Canada, BC, Vancouver
Full-time
As a Senior Full Stack Software Engineer in Agent Factory, you’ll help build the user-facing and platform experiences that bring Workday’s AI agents to life. Working within a small,…
Added 5 hours ago
Java Full Stack Lead
Accenture
Mississauga, ON
Full-time
A Full Stack Engineer with strong expertise in Java, Spring Boot, Angular, AWS Cloud, and DevOps practices, along with experience delivering and supporting enterprise applications across…

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

Apply About employer

Applications open in a new tab.

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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