Jefson Oliver
System Administrator at Bevertec- Claim this Profile
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Bio
Credentials
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AWS Certified Solutions Architect – Associate
Amazon Web Services (AWS)Dec, 2020- Nov, 2024
Experience
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Bevertec
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Canada
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Information Technology & Services
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1 - 100 Employee
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System Administrator
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Aug 2021 - Present
Working within an environment of Alpha Banking Solutions, comprehensive credit card solutions, ESP-Link Suite ABS, to deliver the sophisticated functional capability that is required by financial and banking institutions. • Leading and coordinating the installation/configuration, operation, and maintenance of systems hardware, software and related infrastructure• Designing major system/infrastructure upgrades.• Installing new and rebuilding existing services and hardware, peripherals, settings, storage, etc. to achieve operational requirements and project specifications• Research and recommend improvements to the organization's hardware, software and infrastructure.• Overseeing the daily datacenter operation of servers and network applications for the purpose of ensuring continuity of service.• Perform daily backup operations (Veeam, Cron jobs, Quest)• Manage user accounts, creating, updating user and group policy access as necessary in Active Directory.• Constantly monitor and assess systems to make sure that processes are operating as designed.• Troubleshoot errors and fix system issues via periodic testing, help desk tickets, and other methods.• Collaborate with other IT and operational staff to ensure database integrity, security, and ongoing performance• Ensure that hardware is adequately sized and configured; conduct capacity planning scenarios to meet future needs• Develop, administer, and maintain policies and procedures for ensuring the security and integrity of all systems• Install, configure, administer, and support necessary hardware and software for LAN and WAN infrastructures; including wireless access points, switches, routers, external firewalls, load balancers, network monitoring tools, configuration backup tools to provide an optimized and reliable environment to run production and QA applications• Provide support for development processes by participating in data modeling sessions and advising about database design or use of objects
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Systems Administrator
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May 2021 - Aug 2021
• Installing and maintaining all server systems and administer all server performance and ensure availability for same.• Maintaining all system backup and assisting to restore all procedures and provide required training to all users.• Controlling and promoting online Google, Facebook ads and updating it on online shopping sites such as Walmart, Home Depot, Wayfair etc.• Integrating all required software and resolving all issues across various technologies and design require enterprise servers and provide back up support.• Evaluating all documents according to system requirements and evaluate all design and perform tests on all development activities and administer all complex methodologies.• Developing an infrastructure to provide support to all business requirements and perform regular troubleshoot on system to resolve all issues.
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PiServe
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India
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Information Technology & Services
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1 - 100 Employee
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Senior System Engineer
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Nov 2012 - Apr 2021
Planned, created, and supported large environments of Windows servers and Linux/UNIX servers and technologies: troubleshooting, proactive management, security management, backups, application upgrades, bug fixes, patches daily operation and optimizationExperienced in Microsoft related technologies such as Office365 cloud, Windows Server 2012/R2 and above, Azure, and Exchange ServerCollaborated with virtualizations techniques such as VMWare, OpenVZ, KVM, Virtuozzo, Xen, Hyper-VCreated virtual machines with virtualization platforms like Vsphere, SolusVM, Onapp and CitrixProficient in Centos, Ubuntu, Redhat, SUSE LinuxAnalyzed security logs to determine and alleviate network threats and performed root cause analysis to provide resolutions for server level spamming and phishingDeep knowledge in Linux command line interfaceManaged, administered & delivered support through ticketing systems like Kayako, WHMCS, UbersmithHands-on experience with Monitoring application/software, Nagios, Check_mk, PRTG, Nodeping.Knowledge on DHCP, LAN/WAN, SAN and Networking ProtocolsDeep knowledge on DNS and its working. Experience in working with Bind and PowerDNS.Maintenance of database instances, MySQL and MariaDBSupervising, managing and controlling customer’s database queries, repairing and optimizing the database tables as per the requirementDirecting mail servers and mail queues with Exim, Postfix, Zimbra and making sure the Mail IP’s remain in good/neutral reputation and maintain email deliverabilityBolstered periodic backups within the server and with tools such as Idera, Backula and Amazon S3.Deep knowledge in handling whole server migrations and single accounts as wellManaged hardware of physical servers via remote control & setting RAID levelsCreated EC2 Instance with AMI images in AWS cloud, Creating Security group & assign to EC2, Creating Tag and Key pair also assign Elastic IP to EC2 or network, User Management, VPC & working with S3 storage
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Education
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2006 - 2009
Mahatma Gandhi University
BSc- Bacherlor in Computer Science, Computer Science -
2010 - 2012
Mahatma Gandhi University
Master's degree, Computer Science
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