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Added 7 mins ago
Associate EI&C Engineer
Veolia | North America
Oakville, ON
Full-time
Added 8 mins ago
RPA Engineer / UiPath Tester
K&K Global Talent Solutions INC.
Toronto, ON
Full-time
We are seeking an experienced UiPath Tester (RPA QA Engineer) to ensure the quality, reliability, and performance of UiPath-based automation solutions.
Added 8 mins ago
Data Engineer
J&M Group
Mississauga, ON
Full-time
Added 8 mins ago
Senior Data Engineer - Retail Engineering (Snowflake)
lululemon
Vancouver, BC
Full-time
As a Senior Data Engineer, you will lead the design and implementation of complex data systems and pipelines spanning multiple data sources and destinations, establishing technical…
Added 8 mins ago
Mine Planning Engineer, Operational Growth
Agnico Eagle Mines Limited
Timmins, ON
Full-time
Added 8 mins ago
POWER ENGINEER
Rank Group
Halifax, NS
Full-time
Rank Group is currently seeking a Power Engineer to add to our team. This would be based out of our downtown portfolio in Halifax, Nova Scotia.
Added 10 mins ago
Student Intern, Process and Manufacturing Engineer
Celestica International LP
Newmarket, ON
$23 to $30 CAD / hour
The Process and Manufacturing Engineer Intern will solve technical process, product, or component problems affecting efficient manufacturing of electronic assemblies within a specific area…
Added 10 mins ago
Senior Data Engineer
Ledcor
Vancouver, BC
Full-time
Ledcor is hiring a Senior Data Engineer to join our Data & Analytics Platform team. In this role, you will design, build, and maintain enterprise-scale data solutions that support…
Added 24 mins ago
Technical Support Engineer
Nokia
Ottawa, ON · Kanata, ON
Full-time
…reliable and high-capacity networks. As a Technical Support Engineer, you will be at the forefront of our technical support operations, ensuring our customers receive exceptional service…
Added 24 mins ago
Corrosion/Integrity Engineer:
Corrosion Technologies
Engineer, BC
Full-time
Added 24 mins ago
Senior Software Engineer, Growth
Mural
Canada
Full-time
As a Senior Software Engineer on the Growth & Engagement team, you'll build the products, platforms, and experimentation capabilities that help customers discover value faster and achieve…
Added 24 mins ago
Senior Baggage Handling System Engineer
AtkinsRéalis
Toronto, ON
Full-time
AtkinsRéalis is seeking a Senior Baggage Handling System (BHS) Engineer for its Western Region. In this role, you will act as the Client's Representative in the execution of large-scale…
Added 24 mins ago
Machine Learning Engineer Intern
Jobright.ai
Canada
Internship
…helps users reach better job outcomes. The Machine Learning Engineer Intern will develop and evaluate machine-learning features, support data pipelines and integrations, investigate model…
Added 24 mins ago
Principal Software Engineer (IAM)
Black Duck
Calgary, AB
Full-time
Black Duck is seeking a Principal Software Engineer to serve as a technical leader for the company's identity, authentication, authorization, and access management platforms. This role will…
Added 24 mins ago
Bilingual Vehicle Test Engineer (English/French)
Sapphire Stream Technology
ON · Ontario, Canada
Contract
We are seeking a Bilingual Vehicle Test Engineer to evaluate advanced driver assistance systems (ADAS), vehicle infotainment, and connected features in real-world driving conditions. You…
Added 24 mins ago
Group Lead, Electrical Engineering Services
Randstad Canada
Vancouver, BC
Full-time
We are seeking an experienced Electrical Engineer to oversee the overall effectiveness of the Electrical Services Group for our high tech R&D client. The group is responsible for the safe,…
Added 24 mins ago
Lead Project Engineer
Amaris Consulting | Part of Mantu
Oakville, ON
Full-time
We are looking for a Lead Engineer to guide multi-disciplinary teams delivering custom municipal and industrial treatment systems. This is an opportunity for an experienced engineering…
Added 24 mins ago
Avionics System Engineer
Talentmatics
Quebec, QC
Full-time
🚨 Hiring: Senior Avionics Systems Engineer | Dorval, QC, Canada
Added 24 mins ago
Tableau Administrator
Collabera
Toronto, ON
$80 to $90 USD / hour
Contract
The BI Platform Operations Engineer will provide production support across Tableau, AWS QuickSight, and the organization's custom BI-as-a-Service platform. They will administer and…
Added 24 mins ago
Frontend Engineer
Jobright.ai
Canada
Full-time
…process and helps users reach better job outcomes. The Frontend Engineer builds accessible, reliable web interfaces by implementing responsive designs, integrating APIs, and supporting…
Added 24 mins ago
Embedded Software & Firmware Engineer
ITS Electronics
Vaughan, ON
Full-time
We are seeking a skilled Embedded Software & Firmware Engineer to join our engineering team. The successful candidate will be responsible for the design, development, maintenance, and…
Added 24 mins ago
QA Engineer (Early Career) (Canada)
Jobright.ai
Canada
Full-time
…your route to the best job outcomes. They are seeking a QA Engineer to design and execute test plans, identify bugs, and collaborate with teams to ensure product…
Added 24 mins ago
Cloud Engineer
VySystems
Canada
Full-time
Added 24 mins ago
Software Engineer
ProxyLink
Toronto, ON
$90 to $100 CAD / hour
Contract
Added 24 mins ago
Automation Test Engineer with Python / Toronto, ON (Onsite) - FTE
AceStack
Toronto, ON
Full-time
Job Title: Automation Test Engineer with Python

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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