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Added 4 days ago
C
Application Security Engineer – AI-Assisted Remediation
CGI
Montreal, QC
- Full-time
At least 5 years of experience in software development or application security, with demonstrated experience remediating vulnerabilities in code.
Added 4 days ago
C
Software Engineer – AI-Assisted Development
CGI
Montreal, QC
- Full-time
Integrate AI-assisted development practices into pull requests, code reviews and CI/CD pipelines, using verifiable quality and security criteria.
Added 4 days ago
OH
Senior Quality Assurance Engineer
Ontario Health | Santé Ontario
Toronto, ON
- Full-time
The Senior Quality Assurance Engineer also provides production application support, including participation in a scheduled after-hours on-call rotation to maintain the availability and…
Added 4 days ago
R&
Senior Full Stack Software Developer
Robertson & Company Ltd.
Toronto, ON
- Contract
Robertson is seeking a skilled Senior Full Stack Software Developer to join our client in support of an existing vacancy.
Added 4 days ago
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Senior Platform Engineer, Performance Management
Four Seasons Hotels and Resorts
Toronto, ON · Four Seasons Corporate Headquarters Toronto
- Full-time
The Senior Platform Engineer is responsible for managing the technical delivery lifecycle of Dynamics 365 Finance & Operations (D365 F&O), including source control, branching strategies,…
Added 4 days ago
SD
Middleware Developer
Symbiotic Digital
ON · Downtown Toronto (Central Bay Street), Ontario
- Contract
We are seeking a Senior Software Developer to provide
Added 4 days ago
OH
Senior Quality Assurance Engineer
Ontario Health
Toronto, ON
- Full-time
The Senior Quality Assurance Engineer also provides production application support, including participation in a scheduled after-hours on-call rotation to maintain the availability and…
Added 4 days ago
MG
Senior Software Developer
MarshallZehr Group Inc.
Waterloo, ON
- $135,000 to $165,000 CAD / year
- Full-time
As Senior Software Developer, you will own MarshallZehr’s in-house mortgage administration platform, Navigator. Navigator is one of MarshallZehr’s key strategic advantages. Staff who joined…
Added 4 days ago
TI
Senior .NET Integration Developer
Teckhorizon Inc
Toronto, ON
- $100 USD / hour
- Contract
Our Client is seeking an experienced Senior Software Developer to support the sustainment, enhancement, and integration of mission-critical police applications within the Government of…
Added 4 days ago
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Officer Production Support Intmd Analyst
Citi
Mississauga, ON
- Full-time
Participate in application releases, from development, testing and deployment into production.
Added 4 days ago
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Senior Applications Developer
Sobeys
Stellarton, NS
- Full-time
…join our team! We currently have a full-time opportunity for a Senior Application Developer. This role can be based out of one our main offices including: Stellarton, NS; Mississauga, ON;…
Added 4 days ago
C
Senior Software Engineer (Fullstack)
CIBC
Toronto, ON
- Full-time
As a Senior Software Engineer, you will leverage your expertise in React, .Net, SQL, and JavaScript to lead the development, enhancement, and maintenance of critical software solutions. You…
Added 4 days ago
IS
Senior .Net developer
Iris Software Inc.
Toronto, ON
- Contract
Iris's client, one of the world's largest multinational Investment banking and financial services corporations, is looking to hire a Senior .Net developer opportunity.
Added 4 days ago
CT
Platform Engineer, Transportation Systems
Canadian Tire Corporation
Brampton, ON · Mississauga, ON · Toronto, ON
- Full-time
…transportation, logistics, supply chain, and customs. You will be a senior hands-on technical contributor focused on system stability, production support, application development, and the…
Added 5 days ago
SM
RQ11698 – Software Developer – CRM – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer – CRM with extensive hands-on experience in Microsoft Dynamics CRM, Dynamics 365, CRM customization, enterprise integrations, Power Apps, Power…
Added 5 days ago
SM
RQ11754 – Software Developer – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer with strong hands-on experience in software development, web applications, Web APIs, web services, Microsoft Azure technologies, .NET, C#,…
Added 5 days ago
SM
RQ11698 – Software Developer – CRM – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer – CRM with extensive hands-on experience in Microsoft Dynamics CRM, Dynamics 365, CRM customization, enterprise integrations, Power Apps, Power…
Added 5 days ago
SM
RQ11698 – Software Developer – CRM – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer – CRM with extensive hands-on experience in Microsoft Dynamics CRM, Dynamics 365, CRM customization, enterprise integrations, Power Apps, Power…
Added 5 days ago
SM
RQ11754 – Software Developer – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer with strong hands-on experience in software development, web applications, Web APIs, web services, Microsoft Azure technologies, .NET, C#,…
Added 5 days ago
SM
RQ11754 – Software Developer – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer with strong hands-on experience in software development, web applications, Web APIs, web services, Microsoft Azure technologies, .NET, C#,…
Added 5 days ago
LI
Software Developer
Lotus IT Solutions
Toronto, ON
- Contract
…and Business Service Delivery and Procurement, is seeking a Senior Software Developer to join their team in Toronto. In this role, the consultant will be responsible for translating…
Added 5 days ago
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Software Engineer
PCMI
Canada
- Full-time
The Software Engineer is responsible for developing and maintaining high-quality web applications using .NET Core, ASP.NET, Angular, and SQL Server. Working closely with senior developers…
Added 5 days ago
AS
Senior Solution Architect
Apex Systems
Burnaby, BC
- $120 to $135 USD / hour
- Contract
We are seeking a Senior Solution Architect to support the enhancement, deployment, and ongoing evolution of an enterprise Financial Planning and Analytics web application.
Added 5 days ago
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Business Technology Specialist( .Net/AWS/Banking)
BMO
Toronto, ON
- Full-time
…enterprise applications built on modern technologies including .NET, Angular, AWS cloud services, and AI-enabled development platforms. Serves as a senior technical leader responsible for…
Added 5 days ago
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Lead Application Developer(.NET/Angular/AWS)
BMO
Toronto, ON · FCP
- Full-time
Leads the design, development, and delivery of enterprise-grade applications using modern technologies including .NET, Angular, AWS cloud services, and AI-assisted development practices.…

Symbiotic Digital

Middleware Developer

ON, Canada
Downtown Toronto (Central Bay Street), ON, Canada

Contract

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Job details

Job type: Contract
Posting language: English
Posted: Oct 20, 2026

Original job description

Position: Middleware Developer

Location: Toronto, ON

Job ID#: RQ11775

Duration: 11 Months

Role Overview

We are seeking a Senior Software Developer to provide technical expertise supporting the ongoing sustainment, enhancement, integration, and performance of mission-critical enterprise applications. The successful candidate will contribute to application development, system integration, automation, and database solutions while ensuring reliable service delivery across complex environments.

Security Requirement:

This role requires a valid OPP Level 4 Security Clearance. Please note that obtaining clearance may require 8+ weeks after contract award.

Work Arrangement:

This position is currently designated as onsite, working 7.25 hours per day between 8:00 AM and 5:00 PM, Monday through Friday.

Key Responsibilities

Lead application design and systems analysis activities.
Develop web-based applications using:
- .NET
- VB.NET
- C#
- JavaScript
- Oracle
- Microsoft SQL Server
- Azure DevOps
Design and implement enterprise integration and interface solutions using:
- IBM ACE
- IBM Integration Bus (IIB)
- Oracle
- Microsoft SQL Server
- .NET
- ESQL
- WCF
Support and develop IBM ACE message flows.
Provide technical expertise in Oracle, SQL Server, and PL/SQL database environments.
Develop, test, troubleshoot, and deploy integration solutions.
Create automation and scripting solutions using PowerShell.
Design, develop, and manage REST and SOAP APIs.
Work with JSON, XML, and XSLT technologies.
Configure and manage reverse proxy and forward proxy services.
Administer Apache server configurations.
Collaborate with technical teams and stakeholders to communicate technical concepts effectively.
Apply analytical thinking and problem-solving skills to address integration and development challenges.

Mandatory Qualifications

Proficiency with:
- IBM ACE
- IBM Integration Bus (IIB)
- WebSphere Message Broker
- IBM MQ
Experience with web-based .NET application development technologies and frameworks.
Knowledge of integration technologies and protocols such as REST and SOAP.
Strong PowerShell scripting and automation expertise.

Desired Skills and Experience

Strong background managing Oracle databases and PL/SQL development.
Experience with reverse and forward proxy services and server administration.
Working knowledge of ArcGIS and ArcGIS API.
Experience with APIs and spatial data management.
Familiarity with Java development.
Strong communication and collaboration skills.
Excellent analytical and problem-solving capabilities.

Evaluation Criteria

IBM ACE Technology (30 Points)

Experience with:

IBM ACE
IBM Integration Bus (IIB)
WebSphere Message Broker
IBM MQ

.NET Development (30 Points)

Experience with web-based .NET application development technologies and frameworks.

Integration Experience (20 Points)

Experience with integration technologies and protocols including REST and SOAP.

PowerShell Scripting (20 Points)

Strong automation and scripting experience using PowerShell.

Knowledge Transfer

The successful candidate will be responsible for

transferring:

Code developed during the assignment
Technical documentation
Supporting implementation documentation

About Symbiotic Digital.

Symbiotic Digital provides the IT Experts you need that solve problems and get things done. See what the top 2% in their field can do for you. (Symbiotic Digital is a division of Symbiotic Group Inc.) We serve

customers in two ways, we provide:

Digital Experts: IT Consulting expertise. Bright Minds That Produce Proven Results
Recruitment: Find The Right People You Need

Serving IT & Business leaders, Symbiotic Digital provides a business system that enable us to provide the Expert Technical staff needed to solve challenging business and IT problems. IT leaders in the most reputable organizations in Canada have relied on Symbiotic Digital to help them staff difficult assignments with proven Experts uniquely evaluated by our proven QMS- Quality Management System Staff Development Model. We are a 100% Indigenous owned company.

Learn more online at https://www.symbioticgroup.com/home-sd/.

Please submit your most recent resume to: RecDep@symbioticgroup.com

View All Jobs online at: https://www.symbioticgroup.com/view-jobs/

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More about this job

Responsibilities

The developer will lead application design and systems analysis while supporting the sustainment and integration of mission-critical enterprise applications. They are responsible for developing web-based solutions, managing message flows, and creating automation scripts to ensure reliable service delivery.

Requirements

Candidates must possess strong proficiency in IBM ACE, IBM Integration Bus, and .NET development frameworks. The role requires a valid OPP Level 4 Security Clearance and expertise in integration protocols like REST and SOAP.

Skills

IBM ACE
IBM Integration Bus
WebSphere Message Broker
IBM MQ
.NET
C#
VB.NET
Oracle
SQL Server
PowerShell
REST
SOAP
API Development
JSON
XML
XSLT

Visa sponsorship

Not detected in the job text

Keywords

Middleware Developer
IBM ACE
IBM Integration Bus
WebSphere Message Broker
IBM MQ
.NET
C#
VB.NET
Oracle
SQL Server
Azure DevOps
ESQL
WCF
PowerShell
REST
SOAP
API
JSON
XML
XSLT
Apache
Reverse Proxy
Forward Proxy
PL/SQL
ArcGIS
Spatial Data
Java
System Integration
Automation
Security Clearance

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