Hiring: Senior Middleware Engineer

Location: Toronto, Ontario, Hybrid (3 days per week onsite)

Duration: September 21, 2026 – September 20, 2027 (possibility to extend)

Hourly Rate: $75/hour - $95/hour (based on experience)

Client: Public Sector - Healthcare In this role, the candidate will provide end‑to‑end middleware expertise, including planning, consulting, technical analysis, solution design, deployment, development support, testing, implementation, maintenance, upgrades, and daily operational support for HIAL middleware components. The candidate will work closely with cross‑functional teams—including support, security, privacy, change management, release management, quality assurance, and various program and business stakeholders—to ensure upgrades are executed successfully with minimal service disruption.

Responsibilities:

The Senior Middleware Specialist is accountable for the end‑to‑end implementation of the HIAL technology upgrade and migration to AWS project. This includes hands‑on technical execution, development of CI/CD pipelines for the deployment of IBM DataPower and other components to OpenShift Container Platform, coordination across multiple support teams, guiding QA and validation activities, and ensuring all components are delivered successfully with minimal impact to mission‑critical health services.

- Perform all technical activities required for the HIAL technology upgrade and migration to AWS, including system preparation, deployment, configuration, optimization, and validation across all the Agency environments.
- Provide expert‑level troubleshooting to resolve complex middleware, integration, and infrastructure challenges that arise during the upgrade lifecycle.
- Develop and maintain detailed implementation plans, technical procedures, runbooks, and operational guides for execution by cross‑functional support teams.
- Identify risks and issues early, propose mitigation strategies, and communicate impacts to project stakeholders.
- Collaborate with Architecture, Security, Privacy, and Infrastructure teams to ensure all upgrade activities meet enterprise standards and compliance requirements.
- Coordinate with Infrastructure, UNIX, Network, Middleware Support, Backup & Storage, and QA teams to ensure all upgrade activities are executed efficiently and consistently.
- Support QA testing by preparing environments,



resolving defects, and validating readiness for deployment.
- Ensure full adherence to the Agency change and release management processes throughout all upgrade stages.
- Prepare and maintain project documentation, status reports, and readiness checklists to support go‑live and operational transition.

Must Haves:

- 7–10+ years of progressive, hands‑on experience in middleware engineering, integration services, or related technical domains, with a demonstrated ability to lead complex platform upgrades and modernization initiatives.
- Proven experience supporting and sustaining large‑scale, mission‑critical application environments across diverse technology stacks, preferably within highly regulated sectors such as healthcare or public service.
- Hands‑on expertise in the following technology stack: IBM DataPower (migrating from physical appliance to OpenShift Container Platform), and IBM App Connect Enterprise, Java Spring Boot microservices.
- Hands-on experience with AWS cloud services and CI/CD pipeline development for deploying, automating, and managing containerized middleware solutions, including IBM DataPower, on OpenShift or cloud-native platforms.

Additional Qualifications and Experience:

- In‑depth knowledge of PKI security infrastructure, digital certificates, TLS configurations, encryption standards, and enterprise network architecture, with proven troubleshooting expertise in secure system‑to‑system communication.
- Technical Depth in Middleware & Integration Stack (IBM DataPower, OpenShift Containers, RHEL).
- Hands on ownership of upgrades, migrations, performance tuning, HA/DR patterns, TLS/mTLS, cert management, and message durability/persistence.
- Demonstrated hands-on experience designing, developing, and supporting CI/CD pipelines and automated deployment processes for containerized middleware solutions such as IBM DataPower on OpenShift platforms or AWS
- Troubleshooting, Monitoring & Operational Excellence (ITIL) Diagnostics,



RCA, observability (logs/metrics), incident/problem management, and production stability.
- QA, Testing Readiness & Validation. Ability to support test planning, setting setup, non-functional testing, and defect triage.
- Architecture, Security, and Compliance Alignment. Understanding of enterprise security, PKI, privacy requirements, hardening standards, and architectural alignment.
- Documentation, Technical Artifacts & Knowledge Transfer, Ability to produce high‑quality build books, operational guides, scripts, and support artifacts.
- Cross‑Functional Leadership & Communication Ability to coordinate with Architecture, Security, Network, Unix, QA, and business partners; clarity in communicating risks and technical concepts.
- Healthcare / Mission‑Critical Domain Understanding, Awareness of HL7v3, regulated environments, PHI handling, and 24×7 availability constraints.

Desired Skills:

- Solid experience with system administration and networking, including Windows Server and Linux environments, IP networking, routing, and firewall concepts, with the ability to diagnose and resolve infrastructure‑level issues.
- Familiarity with healthcare integration standards such as HL7v3 (asset), with additional exposure to related formats like HL7v2, FHIR, or SOAP‑based healthcare messaging considered an advantage.
- Strong understanding of Information Management principles, including data governance, information lifecycle management, security policies, and compliance practices.
- Working knowledge of quality assurance practices, including test planning, defect management, risk assessment, and validation of middleware or integration components.
- Experience with system monitoring, performance tuning, capacity planning, and ensuring data integrity, following ITIL processes for incident, problem, and change management.
- Ability to collaborate effectively with cross‑functional teams, providing leadership, technical guidance, and subject‑matter expertise in middleware technologies and integration patterns.

We appreciate all interest; however, only candidates whose experience fully meets the posted requirements will be considered. Interested?

If you meet the above criteria apply now!

AI is not being used in the application/recruitment process for this position

📌 Senior Middleware Engineer (Toronto)
🏢 StafinGo
📍 Toronto