Rajesh Chalise
Fredericksburg
Summary
Senior System Administrator with 30 Years Experience in Information Technology Industry .
Expertise in system automation, security, application and network infrastructure optimization. Achieved reduction in manual administration tasks, decrease in security incidents, and increase in network performance. Skilled in system monitoring, troubleshooting, and data recovery with a proven track record of improving system uptime, efficiency, and reliability.
Overview
32
32
years of professional experience
Work History
Senior Systems Administrator
Zeiders Enterprises
10.2019 - Current
- Resolved issues and escalated problems with knowledgeable support and quality service.
- Diagnosed and resolved hardware and software issues.
- Planned and implemented upgrades to system hardware and software.
- Monitored networks and network devices to resolve technical problems quickly.
- Developed and documented network policies, procedures and standards.
- Diagnosed and executed resolution for network and server issues.
- Led server infrastructure development, quality assurance, staging and production systems.
System Administrator
Zeiders Enterprises
12.2012 - 10.2019
- Worked with users to determine areas of technology in need of improved usability.
- Installed important security and functionality patches to maintain optimal protections against intrusion and system reliability.
- Provisioned new software and hardware for use, following established security policies.
- Managed onboarding and offboarding of employees.
- Developed and documented network policies, procedures and standards.
- Implemented, developed and tested installation and update of file servers, print servers, Exchange server, SharePoint , SQL server and application servers.
- Diagnosed and executed resolution for network and server issues.
- Designed proactive preventive maintenance schedules to prevent unnecessary downtime and hardware faults.
Systems Administrator
Virginia Systems Inc.
02.2012 - 12.2012
- Worked as a contractor for Zeiders Enterprises
- Configured and tested Windows Server operating systems with roles features.
- Planned and implemented upgrades to system hardware and software.
- Conducted routine and emergency maintenance of assigned servers and applications
- Delivered Tier 2 and Tier 3 support for problem identification, diagnosis and issue resolution.
- Performed software installations and upgrades to Windows operating systems.
- Mentored employees and offered constructive feedback for performance improvement.
- Attended meetings to deliver status reports to key stakeholders.
Information Systems Manager
Sentara Northern Virginia Medical Center
07.2006 - 01.2012
- Responsible for analysis, installation, maintenance and modifications of all facility applications and its network
- Provide support to 1500 end users for all facility applications and network trouble calls
- Test, implement and field configuration of facility applications, hardware and software
- Develop test plans for the new application, hardware and software
- Engineering support and maintenance of Telecommunication Solutions, Nurse Call System, TVs, Wireless Networking and the video conferencing to all facilities of Sentara Healthcare Northern Virginia division.
- Providing engineering and system design, project management, oversee activities of contractors and deliver quality results on time.
- Key role play in emergency management and preparedness & fire and life safety prevention.
- Manage department performance goals, policies and budget. Involved in strategic planning for department and/or hospital.
- Well versed in managing 24×7 environment in support of Switchboard, PBX, Telecommunications services, Pocket paging and overhead paging Systems
- Provide leadership and direction of strategic vision to staffs. Support corporate strategic initiatives while looking to maximize efficiency and minimize costs including setting service standards, defining processes and procedures.
- Maintenance and support of Hear Radio, Medcom Radio, RIOS, eCare Mobile, Comcast Cable, BGAN satellite system and device.
Systems Engineer
Potomac Hospital ( Current -Sentara Hospital)
03.2004 - 07.2006
- Documented system configuration, mapping and processes.
- Supported system users, educating employees on troubleshooting and problem-solving protocols.
- Proposed technical feasibility solutions for new system designs and suggested options for performance improvement of technical components.
- Conducted end-user reviews for modified and new systems.
- Providing network and desktop support to approximately 1500 users in a 24/7 hospital
- Perform server support and maintenance in a 2003 Windows Active Directory environment with Windows NT 4.0 and 2000 member servers
- Desktop support consists of Win 98, Windows 2000 Professional and Windows XP machines Responsibilities include, but are not limited to, creating new user accounts, maintaining existing accounts
- PC hardware and software maintenance, rollout of all new PC's either utilizing Norton Ghost or by installing individual OS and software packages
- Maintaining DHCP, DNS, and WINS on the servers
- Perform Microsoft Exchange 2003, SQL server and IIS administration. Administration of antivirus on Server , e-mail system and client machines using Trends Suite of anti-virus products and GFI software
- Maintain Cisco and Sonic wall’s wireless solutions.
Systems Analyst
EDS (Worked For DMDC/ Deers Rapid Support Center)
05.2000 - 02.2004
- Network troubleshooting on Department Of Defense’s network for Deers Rapids systems. Installing new Software upgrades, troubleshooting defective hardware parts, installation and configuration of Server/Workstations, re-joining the domains, modems, Computone boards and Lantronix boxes
- Provided client support on system operation and troubleshooting to support DoD Deers/Rapids users for any aspect of software, hardware and networking problems to create ID cards for DoD Personnel
- Helping Military users to support on Software, hardware and communications problem for DoD’s new Common Access Card (CAC – Chip ID card )
- Performed system analysis, documentation, testing, implementation, and user support for platform transitions.
- Resolved or escalated problem tickets to resolve user issues.
- Assessed business requirements to create focused solutions.
Researcher
CARMA International
09.1998 - 05.2002
- Have conducted research for company’s clients like HP test and measurement, Philips Semiconductors, Siemens.
- Have completed successful project on study of Hewlett Packard’s RF, telecommunications, wire/wireless communications devices, test and measurements products
- Also study on Philips and Siemens wire/wireless communications, telecommunications, RF, semiconductors products and its future develop areas and concentrations
- Gathered and organized information for research purposes.
- Wrote research papers, reports, reviews, and summaries regarding the "Third Generation" Computers and Electronic Devices developments.
- Interpreted data analysis results to draw inferences and conclusions.
- Developed research proposals, identified research objectives and created research plans.
Technical Analyst
Circuit City Service Center
06.1996 - 11.2000
- Responsible for assessing the Customer's business need or problem, using on-line tools and analytical thinking to diagnose and resolve the issue or business need
- Research open issues thoroughly and quickly move those issues toward an accurate resolution
- Interaction with Quality Assurance for testing program changes, new releases, or user documentation
- Deployment of software as necessary to meet the business needs of Customers
Freelance Research Engineer
Freelance Research Engineer
12.1993 - 06.1996
- Innovated research for solving problem and involving solution in different field of Electrical, Electronics and Communications Engineering
- Set timelines and coordinated deliverables for R&D projects.
- Formulated energy-efficient routing problem in multi-hop wireless ad-hoc networks as the maximum network lifetime routing problem and developed a centralized approximation algorithm and distributed algorithms
- Researched on antenna array beam forming on both transmitters and receivers in order to maximize the network capacity
- Handled projects and studies on radio frequencies, digital microwave and fiber optic based transmission networks.
Production Engineer
Samsung Electronics
12.1991 - 11.1992
- Supervised entire production process and prepared proper documentation for dispatch.
- Worked and handled the engineering monitor to Fault Detection in Printed Circuit Boards of Televisions and test program
- Supervised production dept for PCB productions, TV wirings and testing
- Performed root cause analysis and implemented corrective actions.
- Communicated with other team members to enhance process and performance and worked for quality and process control engineering successfully and efficiently
- Trained team on best practices to optimize production and improve quality.
Education
Bachelor of Science - Electrical, Electronics And Communications Engineering
Central Colleges of The Philippines
Manila, Philippines 09.1991
Skills
- Active Directory Management including Azure AD
- Cloud Computing
- Disaster Recovery Planning
- Backup and Recovery including Quest Rapid Recovery and Veeam
- Microsoft DHCP, DNS, IIS, Group policy
- Email Systems Administration
- IT Security Management
- Patch Management
- Virus Protection
- Software Management
- Application Configuration
- Disaster Recovery
- Network Security
- Firewall Management
- Server Administration ( 2008/2012/2016/2019 /Data Center)
- Technical Infrastructure (LAN/WAN/VPN, DHCP, DNS and IIS)
- VMware vSphere, vCenter
- Exchange 2007, 2010 , 2013 , 2016 and MS 365 Exchange administration
- Microsoft 365 , SharePoint 365, MS teams and MS Office
- Symantec Endpoint Protection Manager
- Dell KACE Management
- PRTG Network Monitor
Gold Medal
Philippines’ Most Outstanding International Student for Year 1989
Timeline
Senior Systems Administrator
Zeiders Enterprises
10.2019 - Current
System Administrator
Zeiders Enterprises
12.2012 - 10.2019
Systems Administrator
Virginia Systems Inc.
02.2012 - 12.2012
Information Systems Manager
Sentara Northern Virginia Medical Center
07.2006 - 01.2012
Systems Engineer
Potomac Hospital ( Current -Sentara Hospital)
03.2004 - 07.2006
Systems Analyst
EDS (Worked For DMDC/ Deers Rapid Support Center)
05.2000 - 02.2004
Researcher
CARMA International
09.1998 - 05.2002
Technical Analyst
Circuit City Service Center
06.1996 - 11.2000
Freelance Research Engineer
Freelance Research Engineer
12.1993 - 06.1996
Production Engineer
Samsung Electronics
12.1991 - 11.1992
Bachelor of Science - Electrical, Electronics And Communications Engineering
Central Colleges of The Philippines
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