Senior DevOps/Cloud Engineer

We are seeking a highly accomplished Senior DevOps/Cloud Engineer to lead the automation, infrastructure design, and environment orchestration of critical enterprise systems. In this role, you will bridge the gap between legacy on-premise infrastructure—including mainframe connectors, Unix/Linux servers, and middleware systems—and modern cloud architectures. You will build and maintain automated Continuous Integration and Continuous Deployment (CI/CD) pipelines, write infrastructure-as-code (IaC) blueprints, configure complex networking and gateway controls, and implement GitOps practices to ensure absolute platform scalability, reliability, and security.

Location: Toronto, ON (Fully Onsite – 5 days/week required)

Duration: 11-month contract



Advantages
Massive Tech-Stack Breadth: Work in a highly diverse technical sandbox that seamlessly connects legacy mainframe networks with advanced serverless architectures.

Strategic Autonomy: Drive the implementation of modern DevOps pipelines, GitOps workflows, and immutable infrastructure patterns from the ground up.

Enterprise Cloud Footprint: Command complete design and engineering ownership over core container orchestration, virtualization, and network security policies.

Stable Onsite Collaboration: Capitalize on an immersive, 11-month onsite contract structure optimized for real-time problem solving and direct engineering alignment.



Responsibilities
CI/CD & Pipeline Engineering: Architect, configure, and maintain automated build and deployment pipelines within cloud ecosystems using continuous integration tools.

Infrastructure as Code (IaC): Design and deploy scalable, cloud-native environments using declarative configuration tools, managing lifecycle states and automated environment provisioning.

Immutable Infrastructure Configuration: Create baseline machine images and configure server automation playbooks to establish consistent, repeatable, and secure application environments.

Middleware & Application Server Management: Handle the structural configuration, customization, capacity optimization, upgrading, and patching of enterprise application servers and data integration tools.

Legacy & Modern Systems Integration: Support legacy-to-modern platform architectures, ensuring data communications pathways remain highly available across Linux/Unix hosts and mainframe connection terminals.

GitOps & Version Control Governance: Govern version control systems, establishing branching and merging strategies, pull request workflows, and GitOps-driven deployment frameworks.

Network & Security Gateway Provisioning: Implement secure load balancers, virtual firewalls, and application gateway configurations to safeguard application traffic.

Performance Tuning & Disaster Recovery: Execute fine-tuning for virtual machines, optimize storage capacity, assist with database migrations, and establish highly resilient backup and disaster recovery (DR) strategies.

Technical Design Review & Automation: Analyze system architectures, write custom automation scripts based on approved blueprints, and promote applications through test and production environments.

Quality Assurance & Post-Go-Live Support: Deliver active support during quality assurance testing cycles, troubleshoot deployment failures, and provide stabilization monitoring post-release.

Technical Knowledge Transfer: Author comprehensive technical runbooks and lead interactive walkthrough sessions to transition environment operations seamlessly to permanent internal staff.



Qualifications
Enterprise Systems & Mainframe Seniority: 10+ years of progressive experience managing enterprise systems, data communications, and telecommunication technologies, with specific expertise in RedHat Enterprise Linux V7+, UNIX Solaris V10, and Mainframe IMS Connect (Strictly Required).

Middleware & Data Integration Mastery: 10+ years of dedicated professional experience configuring, customizing, upgrading, and patching WebLogic V12, WebSphere V9, and Informatica V10 (Strictly Required).

Cloud & DevOps Tooling Expertise: 5+ years of hands-on experience designing and operating cloud-native environments and automated pipelines, with extensive toolset exposure to Docker, Ansible, Packer, Terraform, Azure DevOps Pipelines, and OpenShift (Strictly Required).

GitOps & Branching Strategy Fluency: Direct, practical experience using Git version control systems, managing branching/merging methodologies (such as git-flow), leading collaborative pull request reviews, and practicing GitOps (Strictly Required).

Infrastructure as Code (IaC) Architecture: Proven experience writing and implementing IaC configuration templates and developing immutable server designs.

Infrastructure Security & Routing Prowess: Practical knowledge clustering load balancers, configuring network firewalls, and managing serverless environments, events, and application gateways.

Modern Development Stack Literacy: Experience supporting runtime applications built with Java/J2EE, Node.js, and Serverless architectures.

ETL Tooling Familiarity: Experience using data integration and workflow tools (such as Informatica PowerCenter Designer, Workflow Manager, and Workflow).

Soft Skills: Outstanding analytical, troubleshooting, and collaboration skills, with an established history of presenting complex technical solutions to diverse team members.



Summary
If you're interested in the "Senior DevOps/Cloud Engineer" role based in Toronto, we encourage you to apply online at www.randstad.ca. Only qualified candidates will be contacted for the next steps. We look forward to hearing from you!

Randstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we are committed to developing and implementing strategies to increase the equity, diversity and inclusion within the workplace by examining our internal policies, practices, and systems throughout the entire lifecycle of our workforce, including its recruitment, retention and advancement for all employees. In addition to our deep commitment to respecting human rights, we are dedicated to positive actions to affect change to ensure everyone has full participation in the workforce free from any barriers, systemic or otherwise, especially equity-seeking groups who are usually underrepresented in Canada's workforce, including those who identify as women or non-binary/gender non-conforming; Indigenous or Aboriginal Peoples; persons with disabilities (visible or invisible) and; members of visible minorities, racialized groups and the LGBTQ2+ community.

Randstad Canada is committed to creating and maintaining an inclusive and accessible workplace for all its candidates and employees by supporting their accessibility and accommodation needs throughout the employment lifecycle. We ask that all job applications please identify any accommodation requirements by sending an email to accessibility@randstad.ca to ensure their ability to fully participate in the interview process.