Noble Sebastian

I, Noble Sebastian, am a System Administrator in HPE. I have experience across a broad domain of IT technologies and solutions. I also achieved a high level of success and respect in a long list of projects for the entire lifecycle of planning, design, implementation, administration, configuration, migration and ongoing administration of enterprise solutions. I am very much dedicated to my work and assure you that I can deliver my best for your extreme satisfaction. I am frequently interacting with various customers to help them to achieve their expectations. I am also providing deep level technical support for various customers across the world.

Skilled Linux Systems and Support Specialist with over 15 years of experience in managing, troubleshooting, and optimizing Linux-based systems. Adept at ensuring system performance, reliability, and security. Proven expertise in scripting, automation, and providing technical support to end-users and stakeholders. Infrastructure design involves creating a blueprint or plan for the infrastructure based on the organization's needs, requirements, and goals. This includes determining the appropriate hardware and software solutions, network topology, and security measures. Implementation involves putting the plan into action. This includes installing, configuring, and integrating the hardware and software components of the infrastructure. Support involves maintaining the infrastructure after it has been implemented. This includes monitoring the system to ensure it is functioning properly, addressing any issues that arise, and providing ongoing updates and maintenance to keep the system running smoothly.

05/27/24

• Working with different customer infrastructure for administration, monitoring, management, and implementation of configuration management and automation of processes.
• Manage and maintain HPC clusters, ensuring optimal performance and uptime.
• Install, configure, and update HPC software, and parallel file systems like Lustre.
• Red hat Linux Installation, configuration and Administration
• HP-UX 11.x & Solaris 11.x Installation, configuration and Administration
• Azure Cloud, HPE Green lake
• NVIDIA H100 Boxes installation and configuration for AI
• Patch management using best practices.
• Infrastructure design and implementation in different type of servers
• Managed servers supporting critical customer applications, ensuring high availability, security, and compliance with regulatory standards.
• Monitor system performance using tools like Ganglia and Nagios, addressing bottlenecks and performance issues.
• Provide technical support and training to a diverse user base of researchers and engineers, assisting with job submission and troubleshooting.
• Implement security protocols and manage access controls to safeguard sensitive data and ensure compliance with industry standards.
• Installed, configured, and maintained Unix servers within customer environment, including SPARC and x86 architectures.
• Managed and maintained Linux-based servers across various distributions including Red Hat, CentOS, and Ubuntu, ensuring high availability and optimal performance.
• Installed, configured, and upgraded Linux operating systems and software packages, adhering to security best practices and organizational standards.
• Implemented automation using Bash scripting for routine system administration tasks, improving efficiency and reducing manual errors.
• Monitored system performance and implemented proactive measures to optimize resource utilization and enhance system reliability.
• Conducted system troubleshooting and resolved complex technical issues to minimize downtime and ensure uninterrupted service availability.
• Provided technical support and troubleshooting for Linux-based systems, achieving a 95% issue resolution rate.
• Conducted system audits and applied security patches to ensure compliance with industry standards.
• Assisted in the migration of legacy systems to newer Linux distributions, improving system reliability.
• Trained junior administrators on best practices in system administration and support.
• Created and maintained detailed documentation of system configurations, procedures, and troubleshooting steps.
• Experience and strong knowledge of networking concepts and protocols
• Excellent analytical skills and a creative approach to problem solving
• Ability and willingness to learn and upgrade technical skills
• Collaborated with cross-functional teams to design and implement Linux-based solutions on Azure Cloud infrastructure, leveraging Azure Virtual Machines and Azure Storage services.
• ILO and Firmware management
• Volume Manager (LVM, Veritas VxVM, Solaris Volume Manager)
• Implementing security in operating system
• Configure, maintain, and troubleshoot systems
• Monitor system/network performance and ensure high availability and reliability
• Implement security best practices and perform regular system updates and patches
• Automate IT operations and processes
• Manage user permissions and access controls
• Install, configure, and migrate to red hat Clusters.
• Conducted regular system upgrades, patches, and performance tuning to optimize system performance and maintain compliance.
• Administered Solaris servers virtualized with Oracle VM, supporting critical customer applications and infrastructure.
• Collaborated with cross-functional teams to design and implement backup and disaster recovery solutions for customer systems.
• Administered servers supporting customer systems, ensuring smooth operation of critical applications.
• Monitored system performance and implemented proactive measures to prevent downtime and ensure compliance with customer regulations.
• Troubleshot and resolved system issues, including hardware and software failures, within customer environments.
• Implemented security measures, including firewalls, encryption, and intrusion detection systems, to protect customer infrastructure.
• Conducted regular audits and compliance checks to ensure adherence to customer regulations and standards.
• Create and maintain technical documentation for systems configurations, procedures, and troubleshooting guides
• Assisted in capacity planning and infrastructure expansion projects to support the growing needs of customer systems.
• Managed storage area networks (SAN) and network-attached storage (NAS) solutions, ensuring optimal storage performance and capacity.
• Provided advanced troubleshooting and support for complex virtualization issues, resolving incidents within defined service level agreements (SLAs)
• Collaborated with IT security teams to implement and maintain security controls, ensuring compliance with industry standards and regulations.
• Work as team lead for the planning and implementation.
• On-call rotation, Production support, troubleshooting, upgrades/migrations
• Monitor system performance and security using Nagios and Prometheus, reducing downtime by 30%.
• Provide tier-2 and tier-3 support, resolving complex technical issues for end-users and stakeholders.
• Develop and deploy scripts in Bash and Python to automate routine tasks and improve system efficiency.
• Collaborate with development teams to support continuous integration and deployment of pipelines.
• Prepared and maintained documentation, including system configurations, procedures, and disaster recovery plans, to facilitate knowledge sharing and team collaboration.
• Create and maintain comprehensive documentation for system configurations, procedures, and best practices.

• CIBC
• Bell
• Rogers
• Sprint
• TD
• Shaw
• Verizon
• AT&T
• And many MNC in North America.

Canada

English

Available upon request