CHRISTIAN SERNA
Summary
Veteran Marine Corps Information Security Specialist with over 10 years of experience in ethical cyber practices, network security, and client relationship management. Skilled in cloud computing, cybersecurity, and networking to ensure robust information assurance. Proven ability to deliver results under pressure through collaboration. Expertise in planning, installing, and maintaining large-scale systems. Established leader known for building strong teams
Overview
13
13
years of professional experience
Work History
System Engineer II
Charter Spectrum (Apex Contractor)
05.2023 - Current
- Collaborate with Application Teams, Internal Business Units and Vendors as an entry point for the Data Center, providing guidance for implementing custom and commercial application deployments that meet IT standards, security guidelines, PCI Standards and best practices
- Expert level knowledge of technical infrastructure available and provided guidance with deployments based on functional and non-functional requirements
- Partner with key teams for projects that have unique requirements that needed more support than the standard Data Center offerings
- Responsible for assisting design, development, and implementation of enterprise-wide Operations Support Systems (OSS) applications and their associated operating systems and databases
- Responsible for Application Administration of OSS applications supporting all Charter Divisions
- Participation in full life-cycle of systems engineering activities of high-quality, scalable solutions.
Azure Networking
Microsoft
05.2022 - 05.2023
- Azure Network Support Engineer at Microsoft
- Identify and escalate risks, drive problem prevention, and manage customer escalations via coordination with Support Services, Professional Services, Engineering, and Products teams
- Develop trusted relationships with over 50 S500 and Premier customers as an advisor and handles complex or escalated cases
- Demonstrate strong customer service skills resolving 95% of escalated technical cases within 24 hours, resulting in a 30% increase in customer satisfaction ratings
- Utilized proactive approach to support and problem-solving, resulting in increased customer satisfaction
- Assist Microsoft customers with designs and systems for information security weaknesses, including reviewing and/or assessing routers, firewalls, and other security systems to determine effectiveness
- Collaborate with Information Security teams, Risk Management teams, and technology teams, including third-party vendors in the planning of architectural changes to enhance the company's security posture; review and update security standards in alignment with industry best practices
- Worked closely with account managers by customizing solutions for customers and providing supporting guidance to clients.
IT Manager/Network Admin
Sonitrol Security
03.2020 - 04.2022
- Apply advanced troubleshooting techniques to provide tailored solutions for customers and drive customer interactions by thoughtfully working with customers to dive deep into the root cause of an issue
- Installed/Configured SonicWall Firewalls in HA setup with dual ISP connections configured NAT policies/Access Rules/ Content Filtering/SSO in a redundant WAN/LAN environment
- Configured SSO policies for the domain, applied them to different OUs throughout our Network
- Created Visio Network Diagram and produced UL certified hardware list for Sonitrol UL compliance
- Assisted Sonitrol Customers IT personnel with Firewall settings to ensure communication with Sonitrol Security Panels, Servers and Receivers
- Managed Active Directory/GPO's - added computers/users to different OUs, set up permissions per security group and added appropriate users to groups, configured folder redirection for users
- Managed all Server Updates
- Setup Windows IIS, configured public web access with SSL and configured SonicWall to pass HTTP traffic from WAN to LAN
- Setup SOPHOS cloud Endpoint Security/Intercept-X and pushed out install to all employees and servers, configured to allow necessary programs to run smoothly
- Protected against Ransomware by installing Sophos Intercept –X on all non-server devices
- Created 3 year operational/capital budget in excel for all IT hardware and software cost
- Procurement of IT equipment – Ensure systems compatibility, zero initial systems issue safe company 30k per year
- Setup VEEAM Onsite backup Server and DR Offsite backup server, created backups of all critical Server VM's and monitored the backups on a daily basis for failures
- Created DHCP scopes on PDC to ensure no overlap of static IPs or IP reservations would be handed out.
Technical Controller
US Marine Corps
01.2011 - 01.2016
- Seasoned subject matter expert and effective manager with a strong track record
- Direct supervisor to 20 personnel
- Achieved exceptional results through optimizing workflow, verbal and written communication, and excellent team guidance
- Increased high risk training throughput by 300% through continuous process improvement
- Extensive experience in operational leadership, risk management, and management of assigned resources and personnel
- Provided expert advice to officers and senior staff regarding equipment capabilities, power requirements, and optimal equipment/bandwidth for user support for eight separate integrated telecommunications networks, both deployed and stateside
- Maintained the highest level of maintenance and operation of all cryptographic items during deployment to Kuwait and aboard the USS Makin Island, with additional responsibility for cryptographic key roll-over at the beginning of every month using gear such as the KIV 7-M and KIV 19A
- Managed an inventory of cryptographic keys and equipment valued at $6.5M and strictly adhered to the Marine Corps' regulations for the disposal of sensitive materials
- Coordinated training events to collaborate with Naval Special Warfare Development Group (DEVGRU/Seal Team 6), resulting in training over 550 special warfare operators
- Received high visibility and praise from upper echelon stakeholders.
Education
Bachelor of Science - Cybersecurity and Information Assurance
ECPI University
Charlotte, NC01.2020
Skills
- Network Security
- IT Management
- Azure Cloud Architecture
- Network Access Controls
- Cloud Security
- VMaaS DBaaS Architecture
- Capacity Planning
- TCP/IP protocol
- LAN/WAN
- Project Management
- IT Infrastructure
- Virtualization
- Cloud Computing
- Technical Support
- Troubleshooting
- System Engineering
- Hardware and software installation
Timeline
System Engineer II
Charter Spectrum (Apex Contractor)
05.2023 - Current
Azure Networking
Microsoft
05.2022 - 05.2023
IT Manager/Network Admin
Sonitrol Security
03.2020 - 04.2022
Technical Controller
US Marine Corps
01.2011 - 01.2016
Bachelor of Science - Cybersecurity and Information Assurance
ECPI University
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