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Middleware Specialist - Senior
Toronto , Ontario , Canada | 2025-06-20 10:09:32
Summary:
Join our team as a Senior Middleware Specialist to lead the design, implementation, and optimization of enterprise integration solutions. In this hybrid role (3 days onsite, 2 days remote), you’ll architect secure and scalable middleware platforms using tools such as IBM ACE, WebSphere, MuleSoft, or Azure Integration Services. You’ll collaborate with development and infrastructure teams to ensure seamless system connectivity, troubleshoot complex issues, and support mission-critical environments. Ideal candidates have 7+ years of integration experience, deep expertise in middleware and API management, and a solid understanding of system integration patterns, cloud platforms, and public sector standards.
 
Description

 

Job Description 

 

The Senior Middleware Specialist is responsible for the design, implementation, support, and optimization of middleware solutions that enable seamless integration between enterprise systems, applications, and external partners. This role requires deep technical expertise in middleware platforms such as IBM App Connect Enterprise (ACE), WebSphere, MuleSoft, or similar ESBs, and a strong understanding of integration patterns, scalability, and system reliability. 

 

Working in collaboration with solution architects, developers, infrastructure, and operations teams, the specialist will ensure middleware platforms are secure, stable, and aligned with business and technical requirements. 

 

 

 

 

Key Responsibilities 

 

  • Design, build, and configure middleware integration solutions across multiple platforms and environments 
  • Install, upgrade, and maintain middleware platforms (e.g., IBM ACE, WebSphere, MuleSoft) to ensure optimal performance and availability 
  • Collaborate with development and infrastructure teams to troubleshoot integration issues, perform root cause analysis, and implement solutions 
  • Ensure middleware services meet enterprise standards for security, resiliency, and compliance 
  • Develop and maintain technical documentation including topology diagrams, configuration settings, and operational procedures 
  • Monitor system performance, logs, and metrics to proactively identify and resolve issues 
  • Implement and manage automated deployment, failover, and backup strategies for middleware services 
  • Support integration with enterprise systems such as SharePoint, Microsoft Dynamics CRM, Siebel, and Curam 
  • Provide technical leadership and mentorship to junior integration and operations staff 

 

Skills
Experience and Skill Set Requirements

1. Core Skills and Experience (40%) 

  • Minimum 7 years of experience in middleware/integration technologies in complex enterprise environments 
  • Proven experience designing, implementing, and supporting integration solutions using middleware platforms 
  • Deep understanding of system integration patterns (synchronous/asynchronous, REST, SOAP, event-driven, messaging) 
  • Strong problem-solving skills with experience troubleshooting across multiple systems and layers (application, middleware, infrastructure) 
  • Experience supporting mission-critical systems with high availability and performance requirements 

 

2. Technical Skills and Experience (30%) 

  • Expertise in middleware platforms such as IBM App Connect Enterprise (ACE), IBM WebSphere, MuleSoft, Azure Integration Services, or similar ESBs 
  • Experience with API Gateway and Management platforms (e.g., IBM API Connect, Azure APIM) 
  • Proficiency in working with messaging and event platforms (e.g., MQ, Kafka, JMS, Event Grid) 
  • Familiarity with cloud platforms (Azure, AWS, or GCP) and hybrid integration scenarios 
  • Knowledge of security protocols and integration (OAuth2.0, SAML, mutual TLS, API keys) 
  • Experience integrating with enterprise platforms such as SharePoint, Microsoft Dynamics CRM, Siebel, Curam, or other COTS solutions 
  • Hands-on experience with scripting and automation (e.g., Shell, Python, Ansible, Terraform) for middleware deployment and operations 
  • Understanding of CI/CD pipelines and DevOps practices in integration environments 

 

3. Communication and Documentation Skills (20%) 

  • Strong verbal and written communication skills with the ability to interact effectively with technical and non-technical stakeholders 
  • Experience developing clear, accurate, and comprehensive technical documentation 
  • Ability to translate business integration needs into technical requirements and solution designs 
  • Strong collaboration skills, with a track record of working in cross-functional teams and leading technical discussions 

Public Sector exp (10%)

Supplier Comments

Max submission: 1 (one)

Hybrid: 3 Days onsite / 2 days remote

 

Must Have:.

  • Minimum 7 years of experience in middleware/integration technologies in complex enterprise environments 
  • Proven experience designing, implementing, and supporting integration solutions using middleware platforms 
  • Deep understanding of system integration patterns (synchronous/asynchronous, REST, SOAP, event-driven, messaging) 
  • Expertise in middleware platforms such as IBM App Connect Enterprise (ACE), IBM WebSphere, MuleSoft, Azure Integration Services, or similar ESBs 
  • Experience with API Gateway and Management platforms (e.g., IBM API Connect, Azure APIM)