Contract - 12 Months (Extension Possible) | Onsite - Toronto (222 Jarvis St.) | Posted Date: 2026-10-30 | Location: Onsite - Toronto (222 Jarvis St.) | Public Sector Experience: Required - OPS / Public Sector | Contract End Date: 2027-10-01 | Rate: $98/hour
Overview The Government Services Integration Cluster, under the Ministry of Public and Business Service Delivery and Procurement, is seeking a Senior Middleware Specialist for a fully onsite engagement in Toronto. The successful consultant will provide end-to-end planning, design, development, deployment, and daily operational support of middleware and integration solutions across a complex enterprise environment. This role is critical to sustaining mission-critical government systems and driving integration excellence across multiple platforms and stakeholders.
Key Responsibilities
Plan, design, implement, and maintain integration solutions using enterprise middleware platforms such as IBM App Connect Enterprise (ACE), IBM WebSphere, MuleSoft, or Azure Integration Services
Provide daily support, configuration, tuning, and administration of middleware products and associated infrastructure
Design and support integration patterns including synchronous/asynchronous, REST, SOAP, event-driven, and messaging-based architectures
Manage API Gateway and Management platforms (e.g., IBM API Connect, Azure APIM) including configuration and security policies
Work with messaging and event platforms such as IBM MQ, Kafka, JMS, and Azure Event Grid
Build and maintain automated CI/CD pipelines for middleware build, test, and deployment using tools such as Jenkins, GitHub Actions, GitLab CI, or Azure DevOps
Deploy and manage containerized workloads using Docker, Kubernetes, EKS, or AKS on cloud platforms (AWS, Azure, or GCP)
Perform application monitoring and support in alignment with ITIL standards, using tools such as Nagios, Prometheus, DynaTrace, Grafana, and Elasticsearch/Logstash/Kibana (ELK)
Assess and test Change Requests (CRQs) with technical content, updating documentation as necessary and participating in release promotions
Troubleshoot and resolve issues spanning application, middleware, and infrastructure layers, including data integrity, security, configuration, and recovery
Develop clear and comprehensive technical documentation and translate business integration requirements into solution designs
Collaborate with cross-functional teams and communicate effectively with both technical and non-technical stakeholders
Must-Have Requirements
Minimum 7 years of experience in middleware and integration technologies within complex enterprise environments
Proven experience designing, implementing, and supporting integration solutions using enterprise middleware platforms
Deep understanding of system integration patterns including synchronous/asynchronous, REST, SOAP, event-driven, and messaging architectures
Expertise in middleware platforms such as IBM App Connect Enterprise (ACE), IBM WebSphere, MuleSoft, Azure Integration Services, or equivalent ESBs
Experience with API Gateway and Management platforms including IBM API Connect and/or Azure APIM
Hands-on experience with messaging and event platforms (IBM MQ, Kafka, JMS, Azure Event Grid)
Strong troubleshooting skills across multiple layers including application, middleware, and infrastructure
Experience supporting mission-critical, high-availability systems with strict performance requirements
Nice-to-Have Skills
Experience integrating with enterprise COTS platforms such as SharePoint, Microsoft Dynamics CRM, Oracle Siebel, IBM Cognos Analytics, IBM Business Automation Workflow, or Curam
Familiarity with cloud platforms (Azure, AWS, GCP) and hybrid integration scenarios
Knowledge of security protocols including OAuth 2.0, SAML, mutual TLS, and API key management
Hands-on experience with scripting and automation tools such as Shell, Python, Ansible, or Terraform for middleware deployment and operations
Experience sustaining large application implementations on platforms such as Oracle Database 19c, Oracle Identity Manager, Oracle Analytics Server, Informatica PowerCenter, or CTRL-M Workload Automation
Knowledge of operating environments including Solaris, AIX, Windows, and Red Hat Enterprise Linux
Knowledge of GO-PKI Security or similar public/private key infrastructure
Familiarity with Information Management principles, portal services, and AODA regulations
Experience working within Ontario Public Sector or broader public sector environments
Work Environment This is a fully onsite role, 5 days per week, located at 222 Jarvis St., Toronto. No security clearance is required. The role involves collaboration across cross-functional technical teams and engagement with both technical and non-technical stakeholders. CI/CD, DevOps, and Agile practices are part of the working environment.
Final role details, responsibilities, and terms will be confirmed with shortlisted candidates. Compensation may vary based on experience. Errors and omissions excepted.
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Middleware Specialist in Toronto employer: Lotus IT Solutions
Join the Ministry of Public and Business Service Delivery in Toronto, where we foster a collaborative and innovative work culture that values your contributions as a Senior Full Stack Developer. Enjoy competitive benefits, opportunities for professional growth, and the chance to make a meaningful impact on community services through cutting-edge technology. With a focus on Agile methodologies, you'll thrive in a dynamic environment that encourages creativity and problem-solving.
