Senior Middleware Developer

88738
Toronto, Ontario
Contract
Yesterday

Title: Senior Middleware Developer (BizTalk to Azure Integration)

Location: Toronto, Ontario

Estimated Duration: 12 Months

Work Model: Hybrid (2 days onsite – 61 Front Street West, 3 days remote)

 

1.0       Description of Assignment
The client’s Enterprise Services Team is currently modernizing its enterprise integration platform. In alignment with Enterprise Architecture recommendations and ahead of the 2028 end of support for BizTalk, the organization is transitioning to Azure Integration Services (AIS). This future state architecture leverages a comprehensive suite of cloud-native technologies, including Logic Apps Standard, API Management (APIM), Azure Service Bus, Cosmos DB, Azure Functions, Azure Key Vault, App Configuration, Azure Data Factory, and Azure Storage.

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 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)
  • The Specialist will be required to work 2 days on-site at 4th Floor, 61 Front St W, Toronto or any other location within the City of Toronto as required by the client and 3 days remote. this may change based on Policy.
  1. Skills and Certifications
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.
3.0       Assignment Duties
This will be a highly hands-on technical role requiring strong design, development, testing, and troubleshooting skills. The specialist must work collaboratively with cross-functional teams (Enterprise Services, Platform Services, Network, ISO, Enterprise Data, Server Team, DBA, EA, QA) to deliver secure, compliant, and supportable integrations.

Core Technical Responsibilities

  • Migrate the existing BizTalk applications and recreate equivalent workflows using Logic Apps Standard
  • Develop mappings, transformations, schemas, and API-based integrations
  • Build non-production infrastructure prerequisites using Bicep templates
  • Develop reusable integration components and follow AIS best practices
  • Troubleshoot message flows, authentication issues, network/connectivity failures
  • Implement application telemetry using Azure monitor, App Insights & Log Analytics
  • Prepare design documents, interface catalogs, operational runbooks, KT materials

Non-Production (DEV/TEST/UAT)

  • Build and deploy Logic Apps, Functions, and Bicep templates
  • Participate in DevOps pipeline execution and validation
  • Conduct integration testing, SIT, and UAT support
  • Collaborate with Enterprise Services (App Support) as primary non-prod owner

Production (Platform Services-owned)

  • Provide deployment-ready packages, runbooks, checklists, approvals
  • Support Platform Services during Prod deployment windows
  • Ensure compliance with ISO Infrastructure and Network deployment controls

Networking & Infrastructure

  • Support QA, performance testing, and NFR validation
  • Participate in cutovers, production readiness, and hypercare
  • Coach developers and contribute to reusable templates and integration standards
  • Collaborate with EA on architectural patterns and approvals
  • Provide updates to project and functional managers regarding progress

Cross-Functional Responsibilities

  • Support QA, performance testing, and NFR validation
  • Participate in cutovers, production readiness, and hypercare
  • Coach developers and contribute to reusable templates and integration standards
  • Collaborate with EA on architectural patterns and approvals
  • Provide updates to project and functional managers regarding progress

Other Requirements

  • Compliance with OHSA health & safety policies
  • Occasional travel between locations for operational or support activities
4.0       Deliverables
  • Automation & Infrastructure: Fully documented CI/CD pipelines (Azure DevOps), IaC artifacts (Bicep templates), and YAML configuration files.
  • Non-Functional Requirement (NFR) Validation: Formal evidence of system resiliency, performance benchmarks, and robust error-handling/retry logic.
  • Technical Specifications: Comprehensive integration design documents and data-mapping schemas.
  • Functional Codebase: Deployed Azure Logic Apps workflows and Azure Functions within designated non-production environments.
  • Testing Documentation: Detailed test logs and sign-offs for SIT, UAT, performance, and security/penetration testing.
  • Operational Readiness: Support runbooks, Day-2 operational procedures, and administrative maintenance guides.
  • Deployment & Transition: Detailed cutover strategies, rollback protocols, and a defined hypercare support framework.
  • Knowledge Management: Execution of formal knowledge transfer (KT) sessions and training materials for personnel.

The pay range that the employer reasonably expects to pay for this position is between CA$85.00 and CA$105.00

Our voluntary benefits offering includes medical, dental, vision and retirement benefits.

This posting is for an existing vacancy.

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Tundra Technical Solutions is a global workforce and technology delivery firm, ranked by Staffing Industry Analysts as one of the largest in North America. At Tundra, we aren't just hiring top talent at the world's most recognizable brands; we are pioneers of social recruitment. We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other legally protected characteristics. We welcome and encourage diversity in the workplace.

We use artificial intelligence tools to help our recruiters screen and assess talent. These tools do not replace human decision making in the process.

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