Senior Systems Engineer – Vulnerability, Devops & Automation

HCL Tech is a global leader in technology and IT services, renowned for driving innovation and delivering next-generation digital transformation solutions to Fortune 500 companies. With a presence in over 50 countries and a diverse workforce, hcltech is committed to fostering a culture of excellence, inclusivity, and continuous learning. The company is recognized for its customer-centric approach, sustainable business practices, and industry accolades in engineering and IT services. OVERVIEW OF THE ROLE As a Senior Systems Engineer at HCL Tech, you will play a pivotal role in maintaining and advancing the reliability, security, and automation of large-scale enterprise infrastructure. You will be responsible for leading system vulnerability remediation initiatives, orchestrating automated OS patching, and collaborating closely with cross-functional teams to ensure the stability and compliance of both Windows and Linux environments. Your expertise will directly impact the security posture and operational efficiency of critical client systems DETAILED RESPONSIBILITIES Lead and execute infrastructure vulnerability remediation for Windows and Linux servers, ensuring alignment with enterprise security standards. Plan, coordinate, and support automated operating system patching across production and non-production environments with minimal downtime. Collaborate with application teams, risk management, and IT stakeholders to validate systems before and after patching activities. Actively participate in Agile ceremonies such as daily standups, backlog refinement, and peer reviews to prioritize remediation efforts and deliver results on schedule. Support Change Management processes, including contributing to ServiceNow change requests, obtaining approvals, and documenting risks associated with patching initiatives. Troubleshoot and resolve issues related to patching or remediation that impact system stability, performance, and compliance. Drive continuous improvement by contributing to infrastructure automation and patching process enhancements, engaging with DevOps and automation communities of practice. Ensure infrastructure compliance with internal security policies by proactively addressing vulnerabilities across diverse enterprise environments. Communicate patching schedules, expectations, and validation requirements effectively to both technical and non-technical stakeholders. Mentor and collaborate with peers within Infrastructure Vulnerability DevOps teams to maintain secure, highly available systems. Maintain proficient working knowledge of key tools, including Confluence, Jira, and Git. SKILL REQUIREMENTS Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent practical experience. Strong engineering skills and experience supporting large scale deployment of Windows Servers and Linux Servers. Expertise in DevOps with Git repo. Hands-on experience in authoring Automation (prefer Ansible but any flavor). Demonstrated capability in vulnerability remediation. Proven experience in Windows Server and Linux OS patching. Proficient troubleshooting skills with a focus on system stability, performance, and compliance. Solid experience with tools such as Git, VSCode, Windsurf AI, and Copilot. Strong communication and collaboration skills to work effectively with cross-functional teams. PREFERRED EXPERIENCE AI and MCP servers. Integration CI/CD workflow. API automation and integration (e.g. Tanium, ServiceNow, Satellite, Splunk, Dynatrace). Background in system integration projects. Experience working in Agile environments. Previous exposure to infrastructure communities of practice is an advantage.

Lead infrastructure vulnerability remediation and automated OS patching for Windows and Linux servers to ensure security compliance. Collaborate with cross-functional teams and stakeholders using Agile methodologies to maintain system stability and operational efficiency.

Requires a bachelor's degree in Computer Science or IT and strong engineering experience with large-scale server deployments and DevOps tools. Candidates must be proficient in automation, specifically with Git and Ansible, and have a proven track record in vulnerability remediation.

• CI/CDPreferred
• AgilePreferred
• GitPreferred

Identified from the job description. Confirm important requirements above.

• Vulnerability Remediation
• DevOps
• Automation
• Windows Server
• Linux Server
• Ansible
• Git
• OS Patching
• Agile
• ServiceNow
• CI/CD
• API Automation
• Troubleshooting
• Infrastructure Compliance
• System Integration
• Change Management

• Technology
• Software
• Engineering
• Consulting
• Security & Safety

Minimum education

Bachelor’s degree

Minimum experience

5+ years

Apply by

Sep 3, 2026

Posting language

English

Working hours

40 hours per week

Location requirements

Country, Toronto, Ontario, Canada

Seniority

Associate

Application method

Direct apply is available