Senior Middleware Developer

Senior Middleware Developer

Location: Station East Wing, 61 Front Street West, 4th floor, Toronto, ON. work in the office two to three days a week

Anticipated Duration (weeks): 52 weeks (one year)

We are seeking a highly skilled Senior Logic Apps Developer/Analyst with extensive

experience in enterprise middleware modernization. The ideal candidate will bridge the gap

between legacy systems and modern cloud architecture, specifically leading the transition and

integration from BizTalk Server to Azure Integration Services. You will design, develop, and

maintain complex workflows that power our global operations.

Key Responsibilities

· Develops and secures robust middleware solutions that facilitate seamless data exchange

between disparate enterprise systems.

· Drive the strategic migration from BizTalk to Azure Integration Services (AIS), modernizing

legacy workflows and architecting new enterprise integration patterns.

· Diagnose and resolve complex issues across multiple user applications and infrastructure.

· Maintain comprehensive documentation for system configurations, operational artifacts,

security protocols, and vulnerability management.

· Collaborate with TTC internal technical teams to migrate business and functional logic into

new Logic Apps applications.

· Document functional and non-functional requirements (FR/NFR), technical design artifacts,

interface mappings, and master catalogs.

· Execute defect triage and performance tuning while providing technical support for System

Integration Testing (SIT) and User Acceptance Testing (UAT)

Mandatory Requirements

• Significant background in BizTalk Server (orchestrations, pipelines, maps including XSLT

expertise, and adapters) as well as experience in migrating legacy middleware to the cloud

• 4+ years Azure Logic Apps development and Azure certified developer

Additional Skills/ Experience

Post-secondary degree/diploma in Computer Science/Engineering or equivalent

experience

10+ years of expertise in enterprise-level systems integration specializing in the .NET

Framework, .NET Core, Web API, and C# using Visual Studio/ Visual Studio Code.

Hands-on experience with Azure Functions, Service Bus, API Management, Cosmos dB,

Azure data factory and Azure storage

Extensive experience with XSLT, XML, XSLT, Liquid templates, and JSON. Strong

Experience with BizTalk migrations (schemas, maps, pipelines, orchestrations)

Experience with Infrastructure-as-Code (Bicep / ARM / Terraform)

Proficiency with Git (branching strategies, PR reviews) and building CI/CD pipelines

in Azure DevOps.

Experience with Private Endpoints, vNets, NSGs, DNS, hybrid connectivity

Knowledge of security protocols: OAuth2, certificates, Key Vault secrets, Azure AD and

RBAC

Experience with Azure monitor, Application Insights & Log Analytics for distributed

monitoring.