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Senior Middleware Specialist Work location: minimum two days per week on-site at 61 Front Street West, Toronto, ON Working Hours:35 hours per week (7 hours per day) Duration: 12+ months contract The role will bridge legacy middleware and modern cloud integration by designing, developing, testing, documenting, and supporting secure, reliable workflows for mission-critical operations. This role will support required project deliverables, maintain ongoing sustainment Biztalk activities, and contribute to the BizTalk replacement project where possible. Key Responsibilities Support and optimize BizTalk Server integrations across SAP, SuccessFactors, Maximo, CAD/AVL, and other TTC systems. Migrate legacy BizTalk workflows to Azure Integration Services and Azure Logic Apps. Monitor integration health, performance, message tracking, error handling, and retry logic. Work with TTC teams, business owners, and vendors to resolve cross-system integration issues. Design, secure, and deploy middleware solutions for on-premises and cloud systems. Perform defect triage, root-cause analysis, performance tuning, and SIT/UAT support. Maintain functional, non-functional, technical, mapping, and support documentation. Skills and Certifications Post-secondary degree/diploma in Computer Science/Engineering or equivalent experience 10+ years of enterprise systems integration experience using .NET, C#, Web API, XML, XSLT, JSON, SQL Server, T-SQL, and stored procedures. Strong BizTalk Server 2020 experience, including orchestrations, pipelines, maps, XSLT, schemas, adapters, and migration to cloud integration platforms. Experience with WCF-Custom, WCF-SAP/SAP .NET Connector, WCF-WebHttp, SFTP, REST, BAPIs, IDocs, APIs, and enterprise integration patterns. Minimum 4 years of hands-on Azure Logic Apps experience; Microsoft Azure Developer certification preferred. Experience with Azure Functions, Service Bus, API Management, Cosmos DB, Azure Data Factory, Azure Storage, Azure Monitor, Application Insights, and Log Analytics. Proficiency with Git (branching strategies, PR reviews) and building CI/CD pipelines in Azure DevOps. Knowledge of OAuth2, certificates, Azure Key Vault, Microsoft Entra ID, managed identities, and role-based access control. Core Technical Responsibilities BizTalk Support: Maintain and troubleshoot pipelines, orchestrations, schemas, maps, and adapters. Azure Logic Apps: Build, test, deploy, and support Logic Apps Standard and Consumption workflows. Data Transformation: Develop XML, JSON, XSLT, and Liquid template transformations. Adapters & Connectivity: Configure WCF-SAP, WCF-Custom, SFTP, REST, APIM, gateways, and hybrid connections. Custom Development: Develop and modernize C#, .NET, SQL Server, and supporting integration components. Testing & Defect Resolution: Support SIT, UAT, performance testing, root-cause analysis, and defect resolution. DevOps: Maintain Git branching, pull requests, and Azure DevOps CI/CD pipelines. Thanks LanceSoft Inc.

What you’ll do

The role involves supporting and optimizing BizTalk Server integrations and migrating legacy workflows to Azure Integration Services. It also requires designing secure middleware solutions and maintaining technical documentation for mission-critical operations.

Requirements

Candidates must have over 10 years of enterprise systems integration experience with .NET and BizTalk, plus at least 4 years of hands-on experience with Azure Logic Apps. A post-secondary degree in Computer Science or Engineering is required.

Listed skills

• C++ · Preferred
• .NET · Preferred
• Git · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• BizTalk Server 2020
• Azure Logic Apps
• Azure Integration Services
• C#
• .NET
• Web API
• XML
• XSLT
• JSON
• SQL Server
• T-SQL
• Azure DevOps
• Git
• OAuth2
• Azure Key Vault
• Microsoft Entra ID

Job areas

• Software
• Technology
• Engineering
• Transportation
• Government & Public Sector