Jaime Nadal López

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Linux System Administrator (DevOps Profile)

DEKRA

Jul 2023 - Current (3 years 1 month)

• Migrated 100+ servers from CentOS/Debian → RHEL 8/9 with zero downtime • Designed and maintained ansible playbooks & roles for configuration management (400+ nodes) • Automated recurring tasks and server provisioning with bash + ansible • Built and maintained gitlab CI/CD pipelines for internal tools and config deployment (gitops) • Containerized legacy applications with docker (or podman) and deployed on on-prem servers • Managed aws and azure infras (vms, storage, networking) • Implemented monitoring dashboards (system metrics + application health)

Linux/Unix System Administrator

S2 Grupo

May 2023 - Jul 2023 (3 months)

• Full infrastructure automation with ansible + bash in highly regulated environments • Deployed and maintained docker • gitlab-based version control and CI/CD for infrastructure code • 24×7 on-call rotation with SLA < 15 min for P1 incidents

Linux System Technician

Mercadona

Dec 2021 - May 2023 (1 year 6 months)

• Managed 500+ RHEL 7/8 servers in one of Spain’s largest private data centers • Complete server lifecycle automation using ansible + custom bash libraries • GitLab + Confluence as single source of truth for infrastructure documentation • Jira Service Management + incident response with post-mortems • 24×7 on-call (3rd largest supermarket chain in Spain) • Bash workshop

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Application Development Analyst

Accenture Spain

Aug 2018 - Dec 2021 (3 years 5 months)

• Developed and maintained billing automation scripts (ksh/bash + PL/SQL) processing millions of CDRs daily • Reduced monthly closing time by 40% thanks to process automation • Worked in agile squads with daily stand-ups, jira and confluence

Application Development Analyst

OESIA

Oct 2017 - Dec 2019 (2 years 3 months)

Responsibilities Worked as an Application Development Analyst within the Marketing and Billing department. Developed and maintained KornShell (KSH) scripts to automate processes within the billing workflow. Performed file processing and editing using vi. Used AWK for text processing, data extraction, and automation tasks. Supported and maintained billing-related applications and operational processes. Environment UNIX Servers HP-UX 11.31 Oracle Server Linux 6.9 Red Hat Enterprise Linux Server 5.11 (Tikanga) Technologies Shell Scripting (KornShell/KSH) KENAN Billing System Oracle SQL

NOC Engineer

Amdocs

Jan 2016 - Oct 2017 (1 year 10 months)

Provided 24/7 NOC support (rotating shifts) in both English and Spanish for Telefónica LATAM MVNE operations across Brazil, Chile, Ecuador, Argentina, Mexico, Guatemala and Peru. Supported mobile operators including Tuenti, Simple, Cierto and Chedraui. Monitored production systems, analyzed application logs, reviewed ANIS status, logistics processes and service availability. Executed Oracle SQL queries for troubleshooting and operational analysis. Monitored system performance using dashboards, graphs, statistics and operational reports. Escalated complex incidents to Development and Engineering teams with detailed technical analysis. Verified communication between distributed nodes running on WebLogic. Monitored F5 load balancer peer status

IT Support Engineer

Mobile One2One

Aug 2015 - Jan 2016 (6 months)

Served as the primary technical liaison between internal teams and external enterprise customers including Iberostar, McDonald's and Carrefour. Provided application support across Android, iOS and Mobile Web platforms. Managed and resolved incidents using Redmine ticketing system. Administered virtualization environments including Proxmox, VMware and KVM. Worked with CoreOS containers and Docker. Created, reviewed and maintained automation scripts. Performed MySQL database queries for troubleshooting. Executed QA testing across multiple environments and developed detailed test cases. Worked daily with macOS, Windows and multiple Linux distributions. Technologies: Linux, Docker, CoreOS, VMware, Proxmox, KVM, MySQL, Redmine, Android, iOS

IT Helpdesk Technician

Penguin Random House

Apr 2014 - Jun 2015 (1 year 3 months)

Participated in the end-user integration of Penguin and Santillana IT environments. Provided technical support for Windows 7 and macOS Yosemite. Installed, configured and maintained end-user workstations. Configured operating systems, Microsoft Office, network resources, shared folders, printers and email clients. Delivered first-line and second-line desktop support. Technologies: Windows 7, macOS, Microsoft Office, Active Directory

Service Desk Operator

PROSEGUR

Feb 2014 - Jul 2014 (6 months)

Provided weekend technical support for the SIGE platform. Responded to customer incidents and service requests via telephone. Delivered first-line technical support. Prepared operational and customer service reports.

IT Support Specialist

Sephora

May 2012 - Jul 2013 (1 year 3 months)

Delivered technical support to over 150 Sephora stores and retail locations across Spain and Portugal, as well as corporate headquarters. Installed and configured POS equipment including payment terminals, PIN pads, receipt printers and barcode scanners. Coordinated IT projects including PDA deployment, telecommunications provider migration and Windows 7 rollout. Communicated daily in English with Sephora IT France to report incidents and coordinate technical activities. Supported retail infrastructure and business-critical systems. Technologies: Windows 7, POS Systems, Payment Terminals, Networking

IT Support Technician

Sermicro

Jul 2010 - Jan 2012 (1 year 7 months)

Provided remote technical support to approximately 1,000 retail locations throughout Spain and Portugal. Supported clients including Repsol, Saras, Diesel, Grupo El Árbol and Grupo VIPS. Diagnosed and resolved first and second-level technical incidents. Supported payment terminals (PIN pads) and retail infrastructure. Provided support for Windows 2000, Windows XP, Windows Vista and Linux systems. Technologies: Windows, Linux, Remote Support, POS Systems

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IT Helpdesk Technician

Viajes Marsans

Mar 2008 - Jul 2010 (2 years 5 months)

Provided IT support for more than 600 end users. Maintained desktop computers, printers and peripheral devices. Diagnosed and resolved hardware, software and operating system issues. Responded to service requests and minimized system downtime. Produced technical documentation and user guides. Technologies: Windows, Hardware Support, Microsoft Office

Systems operator

Grupo Oesia

Jul 2007 - Nov 2007 (5 months)

Provided technical support for Telefónica's dedicated operations center. Supported Linux, Windows and Sun Solaris environments. Diagnosed and resolved end-user incidents remotely and on-site. Assisted with workstation maintenance and operational support. Technologies: Linux, Windows, Sun Solaris

Software Development Intern

Deoleo

Mar 2006 - May 2006 (3 months)

Provided desktop support and resolved end-user technical incidents. Developed an internal application using Visual Basic during the internship. Assisted the IT department with software development and user support tasks. Technologies: Visual Basic, Windows

Jaime Nadal López

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