David Lang
Baltimore,MD
Summary
Seasoned Sr. System Administrator with a proven track record at Cox Communication, showcasing expertise in AWS, Azure, and Linux/Unix. Demonstrates exceptional analytical skills and a knack for driving operational efficiency through innovative cloud solutions and disaster recovery planning. Excelled in enhancing system performance and security, underscoring a commitment to technological advancement and client satisfaction.
Overview
11
11
years of professional experience
Work History
Sr, System Administrator
Cox Communication
04.2020 - Current
- An exciting person with high analytical and troubleshooting capabilities, capable of focusing on business and client needs
- Experience communicating technical solutions to technical and non-technical audiences
- Monitor network uptime and security through tools like SolarWinds and Wireshark to ensure uptime and reliability
- Successfully handled and supported infrastructure deployment problems through the system by tracking the issue to the root cause
- I fully understand and am dedicated to providing cost-effective solutions that fit organizational objectives and drive performance
- Schedule regular backups and disaster recovery testing to assure data integrity and business continuity
- Support end-users on technical matters, ensuring hardware and software problems are resolved immediately
- Set up and troubleshoot network devices, such as routers, switches, and firewalls, to ensure connectivity and security
- I am a highly skilled system administrator who specializes in scripting languages, application servers, and administration of databases
- I have knowledge of containerization and orchestrators, CI/CD solutions, and system and application performance monitoring
- Excellent in utilizing and orchestrating the operations of existing and provisioned cloud resources
- Competent in performing detailed performance tuning to improve the efficiency of the system
- Utilize EC2 Instances, VPCs, S3 Buckets, RDS databases, and IAM Policies to design, deploy, and manage Azure and AWS cloud platforms
- Use AWS Auto Scaling, ELB, and Route 53 for high availability and fault tolerant system set-up and maintenance
- Competent in resolving challenges at any phase of the SDLC, to see the performance of the operations intact
- I have the skill to respond in a reasonable time to ensure smooth operation across all phases of the development cycle
- Employ and manage the security policies in Azure and AWS settings which include but are not limited to the use of network ACLS, security groups, and the AWS Web Application Firewall for optimal security
- I make use of CloudFormation, AWS CLI as well as Ansible to automate deployment and configuration management tasks
- Use AWS Backup service, and snapshots together with the AWS DRS to backup and implement the disaster recovery plan
- Analyze the requirements and specifications effectively to design robust systems
- Focused on achieving the correct solution versions, deploying them, and ensuring that they function well in the production environments
- Help to advance the automation agenda within the organization to improve infrastructure provisioning, deployment, release procedures, and other operational activities
- Verse in creating and executing automation strategies in order to reduce manual input and increase operational efficiency
- Quick adaptation to new instruments and tools, with methods that can be used in improving operations
- I like researching and producing new ways of improving AI/ML, dev SecOps, SRE, and observability
- Tactful in ways of integrating new technologies for the organization's aimed strategies
System Administrator
Cox Communication
07.2018 - 03.2020
- Carried out and managed Linux/Unix servers and frameworks including but not limited to software and hardware components installation, configuration, troubleshooting, and performance evaluation
- Oversee virtual facilities provisioned on VMware vSphere to ensure High Availability, effective DR, and optimal resource utilization
- Performed periodic backups, disaster recovery management, and other activities to reduce the effects of downtime and data loss
- Skilled in the assessment of the latest technology tools, methods, and approaches aimed at operational improvements
- Has proven interest and knowledge in AI/ML, DevSecOps, SRE, and Observability, and follows recent trends in the domain
System Administrator
AT&T
03.2014 - 06.2018
- Proficiently built, installed, upgraded, and patched various operating systems, including Solaris, HP-UX, AIX, Windows, and Linux, ensuring optimal system performance and security
- Designed a robust system for configuration file management based on the Version Control System (VCS), simplifying configuration updates and version control
- Acted as top-tier escalation support, collaborating with onboarding and senior engineering teams, and proficiently utilized tools like HP diagnostic, Zabbix, Nessus, Netcool, Insights, CA (APM), Citrix, NetScaler, and ServiceNow
Education
Master of Science - Cybersecurity Technology
University of Maryland
Greenbelt, MarylandBachelor of Science - Information Technology System
University of Maryland
MarylandSkills
- AWS
- Azure
- Linux/Unix
- VMware vSphere
- Ansible
- Scripting languages
- Database administration
- Network design
- Disaster recovery planning
- DevSecOps
- AI/ML
Significant Projects
- Operating System Upgrade from RHEL 7 to RHEL 8 (AWS and Azure), Led and actively contributed to a critical project involving a seamless upgrade of the operating systems from RHEL 7 to RHEL 8 for both AWS and Azure environments.
- Application and Database Migration from RHEL 7 to RHEL 8, Successfully orchestrated the migration of key applications and databases from RHEL 7 to RHEL 8.
- Development and Management of Ansible Platform, Spearheaded the development and management of an Ansible platform, automating infrastructure provisioning, configuration management, and application deployments.
Timeline
Sr, System Administrator
Cox Communication
04.2020 - Current
System Administrator
Cox Communication
07.2018 - 03.2020
System Administrator
AT&T
03.2014 - 06.2018
Master of Science - Cybersecurity Technology
University of Maryland
Bachelor of Science - Information Technology System
University of Maryland
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