RQ09381 - Middleware Specialist - Senior
About the job RQ09381 - Middleware Specialist - Senior
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

SkillsExperience 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%)

Robust 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%)

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)

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📌 Middleware Specialist - Senior (Ontario)
🏢 Rubicon Path
📍 Ontario