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Added 3 hours ago
J
Project Manager (Engineering)
Jobgether
Canada
- $100,000 to $140,000 CAD / year
- Full-time
Are you an experienced engineering project manager ready to lead complex projects and make a tangible impact across industrial sectors? This full-time opportunity offers the chance to…
Added 5 hours ago
NW
Associate Engineer/Scientist/Technical Officer
Nuclear Waste Management Organization
Ignace, ON
- Full-time
Associate Engineer/Scientist/Technical Officer – Site Characterization – Monitoring Wells Shallow Groundwater Monitoring
Added 7 hours ago
J
Project Manager (Engineering)
Jobgether
Canada
- $100,000 to $140,000 CAD / year
- Full-time
Are you an experienced engineering project manager ready to lead complex projects and make a tangible impact across industrial sectors? This full-time opportunity offers the chance to…
Added 7 hours ago
A
Design Manager, Data Centers
AECOM
Markham, ON
- $150,000 to $200,000 CAD / year
- Full-time
This is a senior, hands-on, client-facing role for an experienced design professional ready to lead multidisciplinary teams through the scale, speed and complexity of hyperscale, colocation…
Added 8 hours ago
A
Senior Project Manager - Airport
AtkinsRéalis
AB · Edmonton, AB
- Full-time
To lead and manage multidisciplinary airport projects as Design Manager, Technical Lead, and/or Engineer of Record.
Added 10 hours ago
PM
Lead Software Engineer – Application Security & Architecture
Prospect Markets
Vancouver, BC
- Full-time
Prospect Markets is hiring a senior engineer to lead technology initiatives across our platform. You'll bring deep application security and software architecture expertise to a team…
Added 11 hours ago
IC
Frontend Developer
IT Connex
Toronto, ON
- Contract
The ideal candidate is a hands-on senior engineer with strong React and JavaScript expertise, experience building enterprise-scale applications, and the ability to lead technical…
Added 12 hours ago
OW
Oliver Wyman - Senior Lead AI Engineer
Oliver Wyman
Toronto, ON
- Full-time
…unique and unprecedented products across industries. As a Senior Lead AI Engineer, you are primarily responsible for managing technical projects and helping teams design and build AI/ML…
Added 12 hours ago
Senior Architectural Contract Construction Administrator (Prince George, BC)
DIALOG
Vancouver, BC
Lead DIALOG’s on-site architectural construction administration activities for the UHNBC Acute Care Tower.
Added 12 hours ago
EI
Mechanical Engineer
Ecolab Inc.
Calgary, AB
- Full-time
As a Mechanical Engineer, you will lead the design and development of next-generation Coolant Distribution Units (CDUs) that power AI, high-performance computing, and data center…
Added 13 hours ago
C
Supervisor Mechanical Locomotive
CPKC
Golden, BC
- Full-time
As a Supervisor, you will take the lead in planning, scheduling, and assigning resources to ensure all repairs and servicing are completed safely, efficiently, and to the highest standards.…
Added 13 hours ago
DC
Coordinator, Construction Services (Electrical)
Defence Construction Canada
Happy Valley-Goose Bay, NL
- Full-time
Are you an electrical engineer? Join our team in Goose Bay and contribute to the delivery of essential infrastructure projects!
Added 13 hours ago
C
Roadmaster
CPKC
Cranbrook, BC
- Full-time
Are you ready to lead and make a lasting impact? As a Roadmaster, you’ll own a critical leadership role by overseeing compliance with safety practices, policies and procedures, and guiding…
Added 13 hours ago
RI
Senior Forward Deployed Engineer - Java/ Python | Capital Markets
Rose International
Mississauga, ON
- Full-time
Prior experience as a Forward Deployed Engineer, Solutions Architect, or Technical Consultant embedded within financial institutions.
Added 13 hours ago
RI
Senior Software Development Engineer in Test (SDET)
Rose International
Mississauga, ON
- Full-time
Certified Software Test Architect / ISTQB Advanced Level (Test Automation Engineer / Technical Test Analyst).
Added 13 hours ago
Development Engineer (In Situ Facilities Development)
Suncor Energy
Calgary, AB
We are hiring a Development Engineer to lead facilities and business case development for Suncor’s In Situ growth projects, including ownership of the Design Basis Memorandum for major…
Added 13 hours ago
JH
Civil/Structural Professional Engineer
J.S. Held LLC
Vancouver, BC · Burlington, Ontario
- Full-time
J.S. Held is a global consulting firm that combines technical, scientific, financial, and strategic expertise to advise clients seeking to realize value and mitigate risk. Our professionals…
Added 13 hours ago
JH
Civil/Structural Professional Engineer
J.S. Held LLC
Ottawa, ON · Burlington, Ontario
- Full-time
J.S. Held is a global consulting firm that combines technical, scientific, financial, and strategic expertise to advise clients seeking to realize value and mitigate risk. Our professionals…
Added 13 hours ago
JH
Civil/Structural Professional Engineer
J.S. Held LLC
Burlington, ON
- Full-time
J.S. Held is a global consulting firm that combines technical, scientific, financial, and strategic expertise to advise clients seeking to realize value and mitigate risk. Our professionals…
Added 13 hours ago
JH
Civil/Structural Professional Engineer
J.S. Held LLC
Calgary, AB · Burlington, Ontario
- Full-time
J.S. Held is a global consulting firm that combines technical, scientific, financial, and strategic expertise to advise clients seeking to realize value and mitigate risk. Our professionals…
Added 14 hours ago
RD
Senior DevOps Engineer (Azure Infrastructure & Platform)
Randstad Digital
Toronto, ON · Greater Toronto Area, Canada
- Full-time
…Platform Engineering role. You will report directly to the Lead Cloud Engineer and take end-to-end ownership of how cloud infrastructure, secure network architecture, and containerized…
Added 14 hours ago
D
Senior SDET / Quality Engineering Lead/Architect
Droisys
Brampton, ON
- Contract
We are seeking a Senior Software Development Engineer in Test (SDET) / Quality Engineering Architect to join our team. The ideal candidate will have strong experience in architecting…
Added 14 hours ago
A
Team Lead, Transportation Infrastructure
AtkinsRéalis
Calgary, AB
- Full-time
Join AtkinsRéalis as a Transportation Infrastructure Team Lead and help shape the future of transportation across Alberta. Based in Calgary, you will have the opportunity to lead a growing…
Added 14 hours ago
FC
Senior DevSecOps Engineer
Fintel Connect
Vancouver, BC
- Full-time
As a Senior DevSecOps Engineer, you will lead the implementation and continuous improvement of cloud security, infrastructure automation, platform reliability, and DevSecOps practices…
Added 14 hours ago
Engineering Study Manager - PL#44559
Peter Lucas Project Management Inc.
Kamloops, BC
We are seeking an experienced Engineering Study Manager to lead and coordinate engineering studies for complex mining and heavy industrial projects. The successful candidate will oversee…

IT Connex

Frontend Developer

Toronto, ON, Canada

Contract

Apply About employer

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Job details

Job type: Contract
Apply by: Nov 26, 2026
Posting language: English
Posted: Oct 27, 2026

Original job description

Senior Software Engineer – React / JavaScript

Location: Toronto, ON

Work Arrangement: Hybrid – 3 days per week onsite

Experience: 10+ years

Job Overview

We are seeking an experienced Senior Software Engineer with strong expertise in React, JavaScript, and modern web application development to join a team responsible for building and enhancing a large-scale Fixed Income trade processing platform.

The platform supports global trading operations across derivatives, cash products, exotics, and securities financing transactions. It processes approximately 200,000 transactions daily and provides real-time position and risk management capabilities.

In this role, you will contribute to the evolution of a next-generation trading application, focusing on modern UI/UX engineering, service-oriented architecture, automated CI/CD pipelines, and improvements to system performance, scalability, and reliability.

Key Responsibilities

Design, develop, and maintain robust, scalable, and testable web applications using React, JavaScript, HTML5, and Node.js.
Collaborate with cross-functional teams to integrate application functionality and deliver new products and process improvements.
Lead technical design and implementation, ensuring solutions align with enterprise architecture standards.
Analyze complex business and system processes to identify issues and develop innovative technical solutions.
Improve application performance, scalability, reliability, and testability through effective engineering practices.
Contribute to the transition toward smaller, modular services and fully automated CI/CD pipelines.
Establish and promote standards for coding, testing, debugging, and deployment.
Identify and implement system enhancements that improve operational efficiency and time to market.
Assess and manage technical and operational risks while ensuring compliance with applicable policies and controls.
Provide technical guidance and mentorship to mid-level developers and analysts, including coordinating development activities when required.

Required Skills and Qualifications

8+ years of experience in software application development.
Strong hands-on experience with React, JavaScript, and HTML5.
Experience with Node.js and modern web development concepts.
Strong understanding of application architecture, system integration, and software design principles.
Experience developing high-quality, testable code and troubleshooting complex application issues.
Knowledge of performance optimization, scalability, reliability, and non-functional requirements.
Experience working in large, collaborative development environments.
Familiarity with automated testing, CI/CD pipelines, and modern software delivery practices.
Demonstrated technical leadership, problem-solving, and mentoring skills.
Ability to manage competing priorities and adapt to changing business requirements.

Nice to Have

Experience with Fixed Income products, trading platforms, or capital markets applications.
Knowledge of C# and the .NET Framework.
Experience with derivatives, cash products, or securities financing transactions.
Exposure to service-oriented or microservices architectures.

Education

Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
Master’s degree is preferred.

Ideal Candidate

The ideal candidate is a hands-on senior engineer with strong React and JavaScript expertise, experience building enterprise-scale applications, and the ability to lead technical implementation. Experience in financial services or Fixed Income trading platforms is an advantage.

Please note: This role requires working onsite in Toronto three days per week.

Apply About employer

More about this job

Responsibilities

Design, develop, and maintain scalable React and JavaScript applications for a large-scale fixed-income trade processing platform, while improving performance, reliability, and testability. Lead technical implementation, promote engineering and delivery standards, support modular services and automated CI/CD, and mentor developers and analysts.

Requirements

Requires 8+ years of software application development experience, strong hands-on React, JavaScript, and HTML5 skills, and experience with Node.js, architecture, integration, testing, and complex troubleshooting. Candidates should demonstrate technical leadership, mentoring, and collaboration skills; a bachelor's degree or equivalent experience is required, and a master's degree is preferred.

Skills

React
JavaScript
HTML5
Node.js
Application Architecture
System Integration
Software Design
Performance Optimization
Scalability
Automated Testing
CI/CD
Technical Leadership
Mentoring
Service-Oriented Architecture
Microservices
Fixed Income Trading

Visa sponsorship

Not detected in the job text

Keywords

React
JavaScript
HTML5
Node.js
C#
.NET Framework
Fixed Income
Trade Processing
Trading Platforms
Capital Markets
Derivatives
Cash Products
Securities Financing
Application Architecture
System Integration
Software Design
Service-Oriented Architecture
Microservices
CI/CD Pipelines
Automated Testing
Performance Optimization
Scalability
Reliability
Non-Functional Requirements
Technical Leadership
Mentoring
Enterprise Applications
Risk Management
Toronto

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