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Added 8 mins ago
RPA Engineer / UiPath Tester
K&K Global Talent Solutions INC.
Toronto, ON
Full-time
Test Planning & Design, RPA Testing & Validation, Defect Management, UiPath Platform Validation, Documentation & Reporting, Stakeholder Collaboration
Added 10 mins ago
Student Intern, Process and Manufacturing Engineer
Celestica International LP
Newmarket, ON
$23 to $30 CAD / hour
With deep expertise in design, engineering, manufacturing, supply chain management and platform solutions, Celestica enables critical data center infrastructure for AI, cloud, and hybrid…
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
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
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
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
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
Cloud Engineer
VySystems
Canada
Full-time
Coordinate daily with Networking, Storage, Security, and AI/ML platform teams.
Added 24 mins ago
Senior Software Engineer: Mobile & Full Stack
Ethereal Music Group
Vancouver, BC · Greater Vancouver Metropolitan Area
$125,000 to $160,000 CAD / year
Full-time
· Pulse - a campaign orchestration platform used to launch, manage, and analyze music marketing campaigns.
Added 24 mins ago
Computer Vision Engineer
HomeTeam Network
Canada
Full-time
Work with streaming, platform, product and customer-facing teams on what partners need
Added 24 mins ago
Data Science Lead
Alberta Innovates
AB · Edmonton, AB
Full-time
Apply MLOps/LLMOps practices for their own solutions and partner with platform and engineering teams for production hardening, CI/CD, and monitoring.
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 Controls Engineer
Waterstone Human Capital
Toronto, ON
Full-time
…also building a proprietary controls and automation software platform as part of a broader move toward becoming a technology driven manufacturer. They are investing heavily in their…
Added 39 mins ago
Senior DevOps Engineer
Tetra Digital Group
Toronto, ON
$200,000 to $300,000 CAD / year
Full-time
…manager needs proof of holdings before a board meeting, our platform is either up and provably correct or we have a very different kind of morning.…
Added 39 mins ago
Machine Learning Engineer
Sobeys
Toronto, ON
Full-time
We are seeking a highly capable Machine Learning Engineer with deep expertise in building Lang graph based agentic systems, Object-Oriented Python, and ML Ops. In this role, you will…
Added 1 hour ago
Sr. Java Full-Stack Engineer
Nityo Infotech
Canada
Contract
Added 1 hour ago
Service Manager
LanceSoft, Inc.
Montreal, QC · Greater Montreal Metropolitan Area
Contract
Experience working with ServiceNow or a comparable enterprise ITSM platform.
Added 1 hour ago
Senior Data Engineer - Toronto
Trisura
Toronto, ON
Full-time
As a Senior Data Engineer on our Data & Analytics Team, you will be a hands-on technical leader responsible for designing, building, operating, and continuously improving scalable, secure,…
Added 1 hour ago
Architecte de solution IA
CGI
Montreal, QC
Full-time
AI/ML certification on a cloud platform (e.g.: Azure AI Engineer, AWS ML Specialty, GCP Professional ML Engineer).
Added 1 hour ago
Senior Systems Engineer - Identity and Access Management
Electronic Arts (EA)
Vancouver, BC
Full-time
We are looking for an experienced Senior Systems Engineer with deep expertise in both Identity & Access Management (IAM) and Windows Systems Administration to join our Identity Security…
Added 1 hour ago
Aircraft Maintenance Engineer (Avionics)
Insight Global
Ottawa, ON
$30 to $59 CAD / hour
Full-time
Our client is seeking an Aircraft Maintenance Engineer (AME) - Avionics to support the Canadian government's CC330 Husky fleet at Ottawa International Airport (YOW). The successful…
Added 1 hour ago
Data Engineer
Zurich Canada
Toronto, ON
Full-time
Zurich Canada is looking for a Data Engineer to build, operate and support data pipelines and analytics-ready datasets that power reporting, advanced analytics and AI-enabled solutions…
Added 1 hour ago
Senior Data Platform Engineer - Toronto
Trisura
Toronto, ON
Full-time
We are currently seeking a driven and collaborative Senior Data Platform Engineer to join our forward-thinking Data and Analytics team.
Added 1 hour ago
Municipal Engineering Project Manager
Dillon Consulting Limited
Winnipeg, MB · Saint John, NB · Fredericton, NB · Halifax, NS
Full-time
Licensed to practice as a professional engineer in your field or eligible to register.
Added 1 hour ago
Manager, Data and Analytics Engineer
Royal Bank of Canada
Toronto, ON
Full-time
As Manager, Data and Analytics Engineer, you are responsible for transforming how data is used to drive business insights, reporting and decision-making.

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

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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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