Senior BizTalk Server 2020 specialist with experience in orchestrations, pipelines, maps, XSLT, schemas, and cloud migration. (2026-031) Our public sector client is seeking a Senior Middleware Specialist (10+ years) to support enterprise integrations using BizTalk Server 2020, Azure Integration Services, and Azure Logic Apps.
Join a large-scale enterprise integration modernization initiative supporting mission-critical transit operations. This role focuses on maintaining and optimizing BizTalk Server integrations while contributing to cloud modernization initiatives using Azure Integration Services and Azure Logic Apps. The position supports secure and reliable integrations across enterprise systems including SAP, SuccessFactors, Maximo, and CAD/AVL. The engagement includes hybrid cloud integration, CI/CD delivery, testing support, and ongoing sustainment activities.
Contract, Toronto, Hybrid, Working Hours: EST
Must Haves 10+ years of enterprise systems integration using .NET , C# , Web API , SQL Server , and T-SQL
BizTalk Server 2020 including orchestrations , pipelines , maps , XSLT , schemas , and cloud migration
Minimum 4 years of Azure Logic Apps with Azure Integration Services and Azure DevOps CI/CD
WCF-SAP , WCF-Custom , REST , SFTP , APIs ,



and enterprise integration patterns
Post-secondary degree/diploma in Computer Science/Engineering or equivalent experience
Nice to Have Microsoft Azure Developer certification
Azure Functions, Service Bus, API Management, Cosmos DB, Azure Data Factory, Azure Storage, Azure Monitor, Application Insights, and Log Analytics
OAuth2, Azure Key Vault, Microsoft Entra ID, managed identities, and role-based access control
Experience supporting SAP, SuccessFactors, Maximo, and CAD/AVL integrations
Responsibilities Support and optimize BizTalk Server integrations across enterprise systems
Migrate legacy BizTalk workflows to Azure Integration Services and Azure Logic Apps
Monitor integration health, message tracking, error handling, and retry logic
Design and deploy middleware solutions for on-premises and cloud systems
Perform defect triage, root-cause analysis, performance tuning, and SIT/UAT support
Maintain technical, mapping, and support documentation
Build, test, deploy, and support Logic Apps Standard and Consumption workflows
Disclaimer: AI may be used in evaluating candidates. This posting is for an existing vacancy.

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📌 Senior BizTalk Server 2020 specialist with experience in orchestrations, pipelines, maps, XSLT, sche (Ontario)
🏢 S.i. Systems
📍 Ontario