Jobs in Canada

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Added 21 hours ago
EC
Business System Developer
Experis CA
Montréal, QC
- Contract
Our client, MDA is seeking a Business System Developer to join their team. As a Business System Developer you will be responsible for developing new features and supporting existing custom…
Added 21 hours ago
TT
ARCHITECT / LEAD APPLICATION MODERNIZATION
Tech Talent International
Montréal, QC
- $110 to $130 CAD / hour
- Full-time
Location: Hybrid - Montreal, QC -(2/3 days per week onsite)
Added 21 hours ago
GV
Strategic Account Quality Leader - Americas / Leader de la Qualité des Comptes Stratégiques - Amériques
GE Vernova International LLC
Montréal, QC
- Full-time
Added 21 hours ago
PCP/Endo Business Specialist - San Bernardino, CA
BoehringerPRD
Canada
The PCP/Endo Business Specialist is responsible for developing and implementing a plan for maximizing net sales of BIPI and co-promoted diabetes products that aligns with direction from…
Added 21 hours ago
N
Architect, Health Sciences
NORR
Toronto, ON
- $80,000 to $115,000 CAD / year
…helping our clients reduce environmental impact, and shaping a net-zero future. We invest in our employees by fostering continuous learning, encouraging innovative thinking, and creating…
Added 21 hours ago
S
Enterprise Account Executive 3
Softchoice
Toronto, ON
- $110,000 CAD / year
Proven yourself as a tenacious salesperson, pursuing net new clients, developing business and networking with passion.
Added 21 hours ago
ND
Senior Backend .Net/GCP Engineer
NTT DATA Canada, Inc
Canada
- Full-time
Operate as a "full-stack" developer with expertise in new and legacy architecture styles
Added 21 hours ago
RC
Cook - 3485
Radiant Care
Virgil, ON
- $25.25 to $27.34 CAD / hour
Added 21 hours ago
RC
Housekeeping Aide - 3486
Radiant Care
Virgil, ON
- $22.38 to $25.14 CAD / hour
Added 21 hours ago
R
Sr. Seller Experience Specialist
RBGlobal
Burnaby, BC · Vancouver, BC
- Full-time
- Hybrid
Candidate must reside In-market, the position is remote-compatible role with regular in-person presence at key accounts, sites, and team sessions
Added 21 hours ago
S&
Director – Esoteric ABS, Denver, CO or Toronto
STANDARD & POOR'S FINANCIAL SERVICE
Toronto, ON
- Full-time
…collateral - including transportation assets, data centers, triple-net leases, whole business securitizations, timeshare facilities, and private equity structures. The team delivers…
Added 21 hours ago
RQ11775 - Software Developer - Senior
Flexstaf IT
Toronto, ON
Added 21 hours ago
GE
Programmeur en vision par ordinateur / Computer Vision Programmer
GEPR Energy Canada Inc
Longueuil, QC
- Full-time
- Hybrid
Added 21 hours ago
RC
Senior Software Developer
Randstad Canada
Toronto, ON
- Contract
Assignment Type: Onsite (5 days per week)
Added 21 hours ago
LongTerm!Software Developer(IIB) - Senior,6Ms Contract+1YrExtension
Dimensional Tech Inc.
Toronto, ON
Added 21 hours ago
V
Software Developer (.NETCore and React)
Veriforce
Remote, Canada
- Remote
Veriforce is seeking an experienced full stack developer to help design and develop applications for our SaaS platform. You will join a growing team of talented front-end, back-end, and…
Added 21 hours ago
RD
Senior Director and Head of Royal Distinction
RBC Direct Investing Inc.
Toronto, ON
- Full-time
Demonstrated track record of client acquisition and retention in high-net-worth segments
Added 21 hours ago
A
Summer 2027 - Claims Intern, Canada Casualty
AXA
Toronto, ON
- Internship
Added 21 hours ago
CS
AI Inference Core - Senior SDET, Release Integration Testing
Cerebras Systems
Toronto, ON
- Full-time
- Hybrid
Added 21 hours ago
CS
AI Inference Core - Technical Lead Manager, Release Qual & Integration
Cerebras Systems
Toronto, ON
- Full-time
- Hybrid
- Experience building test frameworks, distributed test systems, release pipelines, dashboards, or internal developer tooling.
Added 21 hours ago
Senior Underwriting Consultant - Life and Health
Gen Re Corporation
Toronto, ON
…evaluating complex facultative risks - particularly large and high-net-worth cases - while delivering exceptional service to our…
Added 21 hours ago
AW
Manager, Software Engineering - 12 Month Temporary
Aviso Wealth
Toronto, ON
- $145,000 to $160,000 CAD / year
- Full-time
Added 21 hours ago
Gérant Magasin
Couche-Tard
Chambly, QC
Financial: Analyzes daily sales and expense information and takes appropriate action to maximize sales and net profits.
Added 21 hours ago
Gérant(e) de magasin- ACT
Couche-Tard
Saint-Hubert, QC
Financial: Analyzes daily sales and expense information and takes appropriate action to maximize sales and net profits.
Added 21 hours ago
P-
Specialist Business Intelligence Performance Measurement and Reporting
PHSA - Provincial Health Services Authority
Vancouver, BC
- $76,111 to $109,409 CAD / year
- Full-time
- Temporary

Randstad Canada

Senior Software Developer

Toronto, ON, Canada

Contract

Apply on randstad.ca About employer

Applications open in a new tab.

Job details

Job type: Contract
Apply by: Dec 17, 2026
Posting language: English
Posted: Oct 19, 2026

Original job description

We are seeking a highly accomplished Senior Software Developer for an enterprise-level contract opportunity based in Toronto. In this role, you will take on a premier software engineering, enterprise integration, and system sustainment capacity, specializing in maintaining, enhancing, and scaling mission-critical web applications and integration architectures.

As a Senior Software Developer, you will bridge the gap between core backend application development, enterprise service bus (ESB) messaging architectures, and database management systems. Operating fully onsite in Toronto, you will lead the technical design, systems analysis, and hands-on development of web-based applications and interface solutions. This position demands a technical authority with strong expertise in IBM App Connect Enterprise (ACE/IIB), WebSphere Message Broker, IBM MQ, .NET technologies, and PowerShell automation who can deliver reliable messaging flows, secure APIs, and high-performance system integrations.

Location: Toronto, ON

Assignment Type: Onsite (5 days per week)

Contract Duration: 6-month contract (with potential for extension)

Advantages
High-Impact Integration Scope: Lead enterprise service bus (ESB) messaging architectures using IBM ACE, IIB, WebSphere Message Broker, and IBM MQ.

Full-Stack .NET & API Stack: Architect web-based applications and manage REST/SOAP APIs across .NET (C#, VB.NET), Oracle, and SQL Server.

Automation & Scripting Leadership: Drive efficiency by automating deployment pipelines, server configurations, and system workflows using PowerShell.

Comprehensive Tech Ecosystem: Gain exposure across proxy configurations, web servers, spatial data APIs, and cloud DevOps environments.

Responsibilities
Lead technical design, systems analysis, and software development for enterprise web applications and middleware components.

Design, build, configure, and maintain enterprise service bus (ESB) solutions, message flows, and interfaces using IBM ACE, IIB, and IBM MQ.

Develop, enhance, and maintain web-based applications using .NET frameworks, C#, VB.NET, JavaScript, and Azure DevOps.

Design, publish, and manage secure REST and SOAP APIs, handling JSON, XML, and XSLT data transformations.

Perform database design, query development, and performance optimization using Oracle, PL/SQL, and Microsoft SQL Server.

Write complex PowerShell scripts to automate deployment routines, system management, and repetitive operational tasks.

Configure reverse and forward proxy services, managing web server settings (such as Apache) and secure communication channels.

Execute thorough unit, system integration, and API testing to troubleshoot and resolve technical defects across integrated application layers.

Collaborate with cross-functional development teams, solution architects, and project managers to clarify technical requirements and solution designs.

Maintain clear technical specifications, system architecture documentation, deployment runbooks, and implementation notes.

Qualifications
Core Technical & Middleware Requirements
IBM Middleware Mastery: Strong proficiency in IBM App Connect Enterprise (ACE), IBM Integration Bus (IIB), WebSphere Message Broker, and IBM MQ.

Application Development Stack: Demonstrated experience with web-based .NET application development technologies and frameworks (C#, VB.NET, JavaScript).

Integration Protocols & APIs: Strong knowledge and hands-on experience with REST and SOAP web services, JSON, XML, XSLT, and interface design patterns.

PowerShell Automation: Proven expertise in scripting and task automation using PowerShell.

Database Systems: Strong experience managing, querying, and optimizing relational databases using Oracle (PL/SQL) and Microsoft SQL Server.

Preferred Technical Assets
Proxy & Web Servers: Experience configuring forward and reverse proxies alongside web server management (e.g., Apache).

GIS & Java Exposure: Working knowledge of ArcGIS, ArcGIS APIs, spatial data management, or Java programming is considered an asset.

DevOps & Tooling: Familiarity with Azure DevOps for continuous integration and version control.

Soft Skills & Delivery Attributes
Analytical Problem Solving: Superior diagnostic and creative problem-solving skills to address complex system integration challenges efficiently.

Communication & Collaboration: Excellent written and verbal communication skills with a proven ability to translate complex technical concepts clearly for diverse stakeholders.

Summary
If you're interested in the "Senior Software Developer" role based in Toronto, we encourage you to apply online at www.randstad.ca.
Only qualified candidates will be contacted for the next steps. We look forward to hearing from you!

Randstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we are committed to developing and implementing strategies to increase the equity, diversity and inclusion within the workplace by examining our internal policies, practices, and systems throughout the entire lifecycle of our workforce, including its recruitment, retention and advancement for all employees. In addition to our deep commitment to respecting human rights, we are dedicated to positive actions to affect change to ensure everyone has full participation in the workforce free from any barriers, systemic or otherwise, especially equity-seeking groups who are usually underrepresented in Canada's workforce, including those who identify as women or non-binary/gender non-conforming; Indigenous or Aboriginal Peoples; persons with disabilities (visible or invisible) and; members of visible minorities, racialized groups and the LGBTQ2+ community.

Randstad Canada is committed to creating and maintaining an inclusive and accessible workplace for all its candidates and employees by supporting their accessibility and accommodation needs throughout the employment lifecycle. We ask that all job applications please identify any accommodation requirements by sending an email to accessibility@randstad.ca to ensure their ability to fully participate in the interview process.

This posting is for existing and upcoming vacancies.

Apply on randstad.ca About employer

More about this job

Responsibilities

The Senior Software Developer at Randstad Canada will lead design and development of enterprise web applications and middleware, build and maintain ESB message flows, and manage secure APIs. The role also covers database work, PowerShell automation, proxy configuration and documentation.

Requirements

Candidates need strong IBM integration experience (ACE, IIB, WebSphere Message Broker, IBM MQ), .NET and C# development, REST and SOAP API skills, PowerShell scripting and Oracle or SQL Server database experience. Analytical problem-solving and clear communication are also required.

Skills

IBM App Connect Enterprise
IBM Integration Bus
WebSphere Message Broker
IBM MQ
Message flow design
C#
VB.NET
.NET framework
JavaScript
REST API development
SOAP web services
JSON
XML
XSLT
PowerShell scripting
Oracle database
PL/SQL
Microsoft SQL Server
Database query optimization
Proxy configuration
Forward and reverse proxy
Apache web server
Azure DevOps
Unit and integration testing

Keywords

Senior Software Developer
IBM App Connect Enterprise
IBM Integration Bus
WebSphere Message Broker
IBM MQ
ESB
enterprise service bus
C#
VB.NET
.NET
JavaScript
REST
SOAP
JSON
XML
XSLT
PowerShell
Oracle
PL/SQL
SQL Server

Seniority

Senior

Tools

IBM App Connect Enterprise
IBM Integration Bus
WebSphere Message Broker
IBM MQ
PowerShell
Azure DevOps
Apache
Oracle
Microsoft SQL Server

Languages

English

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Work requirements

Jobs in Canada