César Augusto Rojas Sierra
Systems Engineer
Bogotá,DC
Summary
Dynamic Servers Administrator with proven expertise at LG CNS Colombia S.A.S. in server virtualization and system security. Enhanced performance through proactive monitoring and scripting automation, reducing downtime significantly. Recognized for effective communication and problem-solving skills, fostering strong relationships with stakeholders to achieve project success and streamline operations.
Developed extensive skills in fast-paced IT environment, excelling in problem-solving and system maintenance. Leveraged expertise in network administration and server management to streamline operations and enhance system performance. Now looking to transition into new field, ready to apply diverse skill set to new challenges.
Overview
23
23
years of professional experience
21
21
years of post-secondary education
8
8
Certifications
2
2
Languages
Work History
Infra Team Part Leader
LG CNS Colombia S.A.S.
Bogotá, Bogota D.C.
01.2023 - Current
- Led cross-functional teams to achieve company-wide goals, fostering a culture of collaboration and innovation.
- Identified team weak points and implemented corrective actions to resolve concerns.
- Overcame challenging deadlines and resource limitations by reallocating personnel and focusing on priority tasks.
- Increased team productivity by streamlining communication and implementing effective project management strategies.
- Managed budgets and resources, ensuring optimal allocation towards achieving organizational objectives.
- Applied strong leadership talents and problem-solving skills to maintain team efficiency and organize workflows.
- Conducted regular reviews of operations and identified areas for improvement.
- Evaluated staff performance and provided coaching to address inefficiencies.
Servers Administrator
LG CNS Colombia S.A.S.
Bogotá, Bogota D.C.
01.2015 - 01.2023
- Designed and implemented virtualization strategies, maximizing hardware utilization while reducing costs associated with physical infrastructure expansion.
- Maintained accurate asset inventory records for servers, networking equipment, licenses tracking purposes.
- Implemented monitoring dashboards to provide real-time insights into system health, enabling early detection of potential issues before they escalate into critical incidents.
- Ensured data security through implementation of robust access controls and regular vulnerability assessments.
- Enhanced server performance by optimizing configurations and implementing regular updates.
- Delivered responsive support for end-users by resolving issues promptly and providing clear communication throughout the process.
- Reduced downtime through proactive monitoring of server health and quick response to alerts.
- Increased efficiency by automating routine tasks using scripting tools and custom scripts.
- Installed, configured and supported local area network (LAN), wide area network (WAN) and Internet system.
- Monitored system performance and responded to alerts.
- Identified and immediately resolved issues with network devices.
- Implemented network security measures to minimize data loss.
- Managed computer operation scheduling, backup, storage and retrieval functions.
- Performed day-to-day LAN and WAN administration, maintenance, and support.
- Diagnosed and resolved hardware and software issues.
- Monitored networks and network devices to resolve technical problems quickly.
- Analyzed network traffic and performance metrics to optimize system performance.
- Identified and resolved network congestion issues and bottlenecks.
- Coordinated vendor relationships to negotiate contracts, obtain technical support resources, and stay current on product offerings within the marketplace.
- Evaluated new software releases for compatibility with existing infrastructure components, ensuring seamless upgrades without compromising stability or performance levels achieved previously.
Servers Administrator
Adecco
01.2014 - 01.2015
- Designed and implemented virtualization strategies, maximizing hardware utilization while reducing costs associated with physical infrastructure expansion.
- Maintained accurate asset inventory records for servers, networking equipment, licenses tracking purposes.
- Implemented monitoring dashboards to provide real-time insights into system health, enabling early detection of potential issues before they escalate into critical incidents.
- Ensured data security through implementation of robust access controls and regular vulnerability assessments.
- Enhanced server performance by optimizing configurations and implementing regular updates.
- Delivered responsive support for end-users by resolving issues promptly and providing clear communication throughout the process.
- Reduced downtime through proactive monitoring of server health and quick response to alerts.
- Increased efficiency by automating routine tasks using scripting tools and custom scripts.
- Installed, configured and supported local area network (LAN), wide area network (WAN) and Internet system.
- Monitored system performance and responded to alerts.
- Identified and immediately resolved issues with network devices.
- Implemented network security measures to minimize data loss.
- Managed computer operation scheduling, backup, storage and retrieval functions.
- Performed day-to-day LAN and WAN administration, maintenance, and support.
- Diagnosed and resolved hardware and software issues.
- Monitored networks and network devices to resolve technical problems quickly.
- Analyzed network traffic and performance metrics to optimize system performance.
- Identified and resolved network congestion issues and bottlenecks.
Network Engineer
Getronics LATAM
Bogotá, Bogota D.C.
12.2013 - 01.2014
- Monitored network capacity and performance to diagnose and resolve complex network problems.
- Provided network support services for devices such as hubs, bridges, routers, and other hardware.
- Reduced downtime with proactive monitoring of network devices and rapid troubleshooting.
- Optimized routing protocols to improve data transfer speeds across the organization''s network infrastructure.
- Troubleshot complex multi-vendor network service provider issues.
- Managed, tracked, and coordinated problem resolution and escalation processes.
- Increased overall network stability by performing root cause analysis on recurring issues and implementing long-term solutions.
- Analyzed, identified and resolved complex network hardware and connectivity problems.
Projects and Services Engineer
Itelca S.A.S.
09.2005 - 04.2013
- Established strong working relationships with clients through exceptional communication skills, fostering trust and collaboration.
- Achieved successful project outcomes by maintaining accurate documentation and meeting strict deadlines.
- Developed positive working relationships with stakeholders to effectively coordinate work activities.
- Presented technical findings to stakeholders, ensuring clear understanding of project status and goals.
- Optimized engineering processes by implementing innovative solutions and streamlining workflow.
- Reduced project completion time with efficient resource allocation and effective communication strategies.
- Collaborated on interdisciplinary teams to develop creative, cost-effective solutions for complex projects.
- Enhanced safety protocols during installation projects, ensuring compliance with national standards and reducing workplace accidents.
- Created detailed reports on engineering activities and findings.
- Led engineering teams to successfully complete projects on time and within budget.
Support Technician
Comware S.A.
11.2002 - 09.2005
- Configured hardware, devices, and software to set up work stations for employees.
- Walked individuals through basic troubleshooting tasks.
- Secured network infrastructure through implementation of updated security protocols, mitigating risk of data breaches or cyberattacks.
- Evaluated system logs to identify patterns of issues, recommending improvements to prevent recurring problems.
- Participated in ongoing professional development opportunities to stay current with industry best practices and latest technology advancements.
Helpdesk Operator
Empresa De Telecomunicaciones De Bogotá - ETB
11.2001 - 11.2002
- Reduced downtime with proactive system monitoring and timely issue resolution.
- Communicated complex technical concepts clearly to non-technical users, promoting understanding of solutions provided.
- Implemented effective triage processes to prioritize urgent requests, resulting in faster resolutions for critical issues.
- Developed strong relationships with internal departments to facilitate seamless cross-functional support.
- Managed high-pressure situations calmly and effectively, maintaining professionalism under tight deadlines.
Education
Systems Engineer - Engineering
Universidad Distrital Francisco José De Caldas
Bogotá, Colombia 01.1997 - 12.2017
Skills
Software installation
Server virtualization
System security
Incident management
Scripting languages
Network administration
Firewall configuration
Server monitoring
Network troubleshooting
Effective communication
Quick learner
Problem-solving
Accomplishments
- Support in the migration of the IP network of Empresa de Telecomunicaciones de Bogota.
- Optimization of the IP network of Empresa de Telecomunicaciones de Bogota through OSPF migration.
- LAN and WAN network administration of Bogota's single emergency line - 123
- Codensa MetroLAN network installation and configuration
- Design, configuration and installation of the LAN and WAN network for the stations of phase 3 of the Transmilenio system in Bogota.
- Replacement of ticket sales and fare collection equipment at Bogota's Transmilenio stations.
- Stabilization of the fleet control solution for the Transmilenio transportation system in the city of Bogota through the creation of a monitoring and early warning system.
- IaaS platform design, installation and configuration for LG CNS Colombia
- Migration of Transmilenio's fare collection and fleet control centers to LG CNS's IaaS platform.
Certification
Juniper Networks - Unified Access Control Configuration
Timeline
Infra Team Part Leader
LG CNS Colombia S.A.S.
01.2023 - Current
Servers Administrator
LG CNS Colombia S.A.S.
01.2015 - 01.2023
Servers Administrator
Adecco
01.2014 - 01.2015
Network Engineer
Getronics LATAM
12.2013 - 01.2014
Certified Sonicwall Security Administrator
06-2010
Juniper Networks - JNCIA-EX
11-2009
Juniper Networks - Operating Juniper Switches in the Enterprise
07-2009
Juniper Networks - Juniper Security with Enhanced Services
07-2009
Juniper Networks - Introduction to JUNOS Software
07-2009
Juniper Networks - Unified Access Control Configuration
03-2009
Juniper Networks - JUNOS enhanced services software operation
03-2009
Juniper Networks - WAN Accelerator operation
03-2009
Projects and Services Engineer
Itelca S.A.S.
09.2005 - 04.2013
Support Technician
Comware S.A.
11.2002 - 09.2005
Helpdesk Operator
Empresa De Telecomunicaciones De Bogotá - ETB
11.2001 - 11.2002
Systems Engineer - Engineering
Universidad Distrital Francisco José De Caldas
01.1997 - 12.2017
Similar Profiles
CHRISTINE SUAREZCHRISTINE SUAREZ
Business & Data Analyst at LG CNSBusiness & Data Analyst at LG CNS
Yurim JoYurim Jo
[SPOT] SPOT Operation Analyst at LG CNS America, Inc.[SPOT] SPOT Operation Analyst at LG CNS America, Inc.
Jennifer PerezJennifer Perez
Sales & Marketing Manager at LG CNSSales & Marketing Manager at LG CNS