JUNIOR LEONARDO PEREZ

ad2fzd@r.postjobfree.com

904-***-****

Professional Summary

Highly skilled Storage Engineer with 30+ years of experience in the design, development, installation, and maintenance of software for High-Performance Computing systems. Proficient in HPC system software cluster management tools, low-latency/high-bandwidth interconnected infrastructure, and administration of secure Linux/Unix operating systems. Excellent written and oral communication skills with the ability to present technical topics to non-technical audiences. Seeking an opportunity to utilize my skills and experience to support day-to-day operations and contribute to the vision of Advanced Research Computing. Technical Expertise

• HPC system software cluster management tools (slurm, salt, xcat, etc.)

• Low-latency/high-bandwidth interconnected infrastructure (Infiniband, Myrinet, 10GigE, etc.)

• Fundamental programming skills (Bash, PERL, Python, or similar languages)

• Administration, monitoring, and maintenance of secure Linux/Unix operating systems (CentOS, Solaris)

• HPC storage principles, file systems (samfs/qfs, beegfs, zfs, RAID, GPFS.), and computer node storage (NFS)

• Shared and distributed memory parallelism (OpenMP, MPI), and accelerators (GPUs)

• Multi-vendor management, security and network/Internet protocols

• Design configuration and planning, problem-solving, and performance management • Expertise in UNIX and Windows systems

• Experience with AWS and Azure cloud platforms

JEA Jacksonville, Florida (FEB 2023 to Apr 2023)

Server and Network Specialist (Contractor)

Designed and implemented system upgrades, enhancing system performance, reliability, and security through meticulous assessment, identification of improvement areas, and seamless execution of upgrades or migrations.

Troubleshot and resolved technical issues by conducting thorough investigations and collaborating with cross-functional teams, resulting in minimal downtime for critical systems and uninterrupted business operations.

Conducted regular system audits and assessments, ensuring adherence to industry standards and best practices for system configurations, security protocols, and compliance measures.

Collaborated with project managers, developers, and stakeholders to define system requirements, provided technical guidance, and actively participated in the successful implementation of new systems and applications.

Monitored system performance, analysed data, and identified bottlenecks or areas for improvement, leading to optimized system efficiency, enhanced resource utilization, and improved overall system operation.

Maintained accurate and up-to-date documentation of system configurations, processes, and procedures, facilitating seamless knowledge sharing and enabling effective training for team members and end-users.

Successfully managed projects and achieved positive outcomes despite budget overruns, demonstrating resilience, adaptability, and the ability to deliver results in challenging circumstances. Optimized systems and achieved cost savings through efficient resource allocation, leveraging expertise in identifying cost-effective solutions without compromising system performance or security. Credence LLC (Norfolk, VA) (May 2020 to August 2022) Principle System Engineer (Full-Time)

Monitoring computing resource performance and managing configurations

Engaging and collaborating with vendors for support activities

Developing new HPC software deployment plans, custom scripts, and testing procedures

Installing, modifying, and maintaining research software applications

Designing, installing, configuring, and performing document management for cluster infrastructure

Investigating, debugging, and addressing researcher inquiries and requests

Exploring emerging technologies and technical developments to address expanding analytical requirements JUNIOR LEONARDO PEREZ

ad2fzd@r.postjobfree.com

904-***-****

Supported a team at the Air Force Research Labs, optimizing performance and resource allocation for Intel Atom Multicore architecture, resulting in a 20% increase in processing power for critical mission applications.

Developed and implemented a novel hypervisor solution for a classified project, enabling seamless integration of multiple operating systems on Intel platforms and improving system reliability by 15%.

Successfully led the development of a custom BIOS for a cutting-edge defense system, ensuring compatibility with Intel platforms and achieving 100% compliance with stringent security standards.

Played a key role in the design and implementation of a Board Support Package (BSP) customization for a complex avionics system, resulting in improved system stability and reduced development time by 30%.

Spearheaded the migration of a critical mission system to a new Intel platform, overseeing the successful transfer of hardware and software components, ensuring minimal downtime, and achieving seamless transition with zero data loss.

Developed optimized multicore processing techniques utilizing Multichip Module (MCM) architecture, increasing system performance by 25% and reducing power consumption by 15% for a defense project.

Utilized C programming expertise to develop efficient and reliable embedded software for resource- constrained environments, resulting in a 30% reduction in system crashes and enhancing overall mission effectiveness.

Translated high-level requirements into detailed specifications for complex defense systems, ensuring alignment with system capabilities and constraints, and facilitating clear communication between stakeholders, resulting in a 20% reduction in development errors. Bank of America (Jacksonville, FL) (June 2019 to May 2020) Vice President of Enterprise Cyber Security (Full-Time)

Managed Team of 150 Engineer/DevOpps/Administrator and supported data protection product Veritas Risk Advisor in a large mission-critical installation monitoring thousands of end-points

Validated and installed custom scripts to monitor numerous system security baselines

Utilized PowerShell scripting to gather data verifying network connectivity for monitored endpoints

Created MS Excel and SQL queries to create reports on scanning success rates and identified security violations

Provided after-hours support for troubleshooting and execution of critical tasks and tweaked Scripts

Handled application upgrades and verified installation and application functionality

Participated in cross-team functional meetings to address issues and plan future changes TechStratigies Inc (Maryland) (May 2018 to May 2019) Principle Enterprise Architect – DOD. (Full-time)

Deployed and managed containerized applications on AWS using Docker, Kubernetes, and AWS Elastic Container Service (ECS).

Designed and implemented scalable and highly available container orchestration solutions using AWS Elastic Kubernetes Service (EKS).

Utilized AWS Fargate to run containers without managing the underlying infrastructure, optimizing resource allocation and improving scalability.

Built and maintained CI/CD pipelines using AWS CodePipeline, CodeBuild, and CodeDeploy for automated building, testing, and deploying of Docker containers.

Implemented infrastructure as code using AWS CloudFormation, creating reusable templates for deploying Docker containers and Kubernetes clusters.

Configured and optimized AWS services such as Amazon EC2, Amazon RDS, and Amazon S3 to support containerized applications.

Managed container repositories using AWS Elastic Container Registry (ECR), ensuring secure and efficient storage of Docker images.

Implemented monitoring and logging solutions using AWS CloudWatch and Prometheus for containerized applications, enabling proactive issue detection and troubleshooting. JUNIOR LEONARDO PEREZ

ad2fzd@r.postjobfree.com

904-***-****

Implemented and managed Kubernetes cluster networking, including load balancers, service discovery, and ingress controllers using AWS Application Load Balancer (ALB) and Network Load Balancer (NLB).

Implemented auto-scaling for containerized applications using AWS Auto Scaling, ensuring optimal resource utilization based on workload demands.

Integrated Docker with AWS services, including AWS Identity and Access Management (IAM) for secure authentication and authorization of containerized applications.

Implemented security best practices for Docker containers, including image scanning, container isolation, and vulnerability management using tools like AWS Security Hub and Twistlock.

Conducted performance optimization and tuning of containerized applications on AWS, ensuring efficient resource utilization and high availability.

Collaborated with development and operations teams to streamline the development and deployment process, enabling faster and more reliable software releases Headwaters Group - Oracle Inc. (Ashburn, VA) (February 2017 to March 2018) Enterprise Architect Consultant – Storage Solutions Inc. US Marines (JEDI Contract)

Decreased backup windows by 40 times through various settings in the current infrastructure and improved recovery times.

Performed UNIX Server, Network, VMware, and Storage administration in support of the Intelligence Community.

Contributed to the strategy and overall vision for IT applications, understanding the current state and helping define the future state of the organization's IT environment.

Participated in developing, documenting, recommending, and communicating plans for investing in IT infrastructure, including analysis of cost reduction opportunities.

Reviewed new and existing IT projects and system designs to ensure compliance with IT standards and architectural plans.

Worked with project sponsors during the planning phase to understand requirements and define an architecture design that met business and technical needs.

Migrated all storage-related data with EMC MirrorView, consisting of 4 environments, each with over 900 Linux nodes on Oracle ZFS clusters.

Conducted research and Proof of Concept on emerging technologies to support anticipated development efforts and recommended technologies to increase cost-effectiveness and infrastructure flexibility.

Proficiently administered and Oracle SPARC and Solaris OS 9, 10, and 11 systems, including firmware and hardware upgrades, patching, and software package installations to ensure system reliability and security.

Provided extensive expertise in managing SVM volume manager and ZFS file system for efficient data storage and retrieval.

Resolved issues related to LDOMs, ensuring optimal virtualization performance and stability.

Installed, configured, and debugged Solaris zones and containers, enabling efficient resource allocation and isolation.

Successfully performed Solaris patch installations and upgrades, minimizing system vulnerabilities and enhancing functionality

Unisys Federal/ DHS, (Falls Church, VA) (November 2016 to January 2017) SAP/UNIX/Storage Consultant (Contract)

Supporting large SAP/Oracle environment migration as a UNIX Engineer/Storage Administrator currently in a migration phase.

Manage at the capacity of a system engineer of 128 Redhat ES6 VMware and grow for an SAP and Oracle configuration. I do performance kernel tuning (/proc, ulimits, swap, and various /etc configuring, cron task defining) for a large SAP Migration project with a government customer. We have no support contract -only hardware support. Responsible for support needed to keep the functioning of the system. Norman Group NC/ Citizen Bank of LA. (South Carolina) (September 2016 to November 2016) JUNIOR LEONARDO PEREZ

ad2fzd@r.postjobfree.com

904-***-****

Enterprise Software Consultant (Contract)

Develop detailed design specifications in Visio for the support hardware and software development for System Administrator which they had no documentation

Debug 600 scripts tied to Oracle SQL within the banking MTS proprietary application to change account numbers and help further explain the system process workflow. Harris Inc/ NOAA (Georgia) (March 2016 to September 2016) Principle IT Storage Consultant Data Fusion (Contract)

Conducted various GPFS Health checks with tuning on various domains and updated all setup and implementation documentation. Achieved a successful GPFS upgrade from 3.5 to 4.1.

Discovered various potent issues with network latency, o/s power management, Kernel ulimit settings, and Network driver upgrades which increase performance and made enhancements

Resolved LDAP issues with cNFS vs.CES (cluster export services)

Conducted a full detailed enterprise performance review and identified various performance issues.

Suggested Open-source SNMP to measure GPFS core features which help create a baseline matrix for future tuning parameters to successful close potential performance issues

Completed and closed 22 L3Harris Problem Technology Reports which were kept open for 12 months with the pending project which would jeopardize the launch of the GOES-R satellite in NOV 2016! SSI Inc./Accenture Federal (Virginia) (April 2014 to November 2015) Enterprise Solution Architect (Contract)

Perform UNIX Server, Network, VMware, and Storage Assessments in supporting the Intelligence Community

(NGA) – Air Gap domains

Contribute to the strategy and overall vision for IT applications. Understand the current state and help define the future state of the organization's IT environment

Participate in developing, documenting, recommending, and communicating plans for investing in IT infrastructure, including analysis of cost reduction opportunities.

Review new and existing IT projects and systems designs, ensuring compliance with IT standards and architectural plans.

Work with project sponsors during the project planning phase to understand the requirements in order to define an architecture design that meets the business and technical needs.

Provide complete architecture designs that consider functionality, cost, performance, scalability, reusability, and extensibility.

Identify new technologies, industry trends, and best practices, which should be incorporated into policies & roadmap

Conduct research and Proof of Concept on emerging technologies in support of anticipated development efforts and recommend technologies that will increase cost-effectiveness and infrastructure flexibility. Sr. Unix / Storage Administrator (April 2012 to August 2014)

Collaborate with Operations, Applications, and Infrastructure teams to develop project plans and complete projects on deadline while ensuring stable functional environments. The technologies are virtualized to condense applications and minimize their carbon footprint by utilizing cloud services (AWS) to maximize cost with the use of all virtual technologies.

Mentoring college interns to help them use technics to configure and use tools within the operating systems to diagnose or setup and configure for a particular application and or services

Ongoing collaborative technical meetings with AWS, Linux, Red hat, Cobbler, and Solaris with other open- source tools

Provide an understanding of optimal storage configuration mythologies based on the stress test. Fed Data Systems Inc (May 2012 to Feb 2014)

Sr. Unix / Storage Administrator (Contract)

JUNIOR LEONARDO PEREZ

ad2fzd@r.postjobfree.com

904-***-****

My responsibilities were to design, install, configure and upgrade infrastructure solutions, utilities, and hardware associated with the enterprise backup and recovery environment via IBM Hardware Management Console for VIO and AIX administration

Proactively identified problems within the enterprise backup and recovery environment on various engagement the appropriate technical resources for resolution in a timely manner

Provided documentation, for backup, recovery, and archival procedures.

Designed infrastructure solutions to meet high availability and mission-critical business needs with

Vitalization to minimize cost.

Generates periodic reports to review, analyse, and discuss utilization with management and peers

Contributed to technical architecture discussions to determine the most appropriate scalable model taking into consideration high availability failover and disaster recovery.

Served as a subject matter expert to application development, systems administration, and engineering with other technical/business staff in planning the resource requirements for systems under development.

Tailored budget solutions to meet the needs of strict budgets Early Career History

(1989 - 2012) Served several firms in systems and network technician capacities. Installed LANs, wired systems, and assembled PCs. Working as a UNIX Engineer/Manager. Configured hardware, software, and networks for I.R.D. Corporation, Tech Pros, and Computer Express.

Clearance CLEARABLE Top Secret

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