Paul R. Messina — Stack timeline

DevOps Engineer | System Architect | AI Systems Integrator — 36 years of technology, newest first

Employed 412 of 427 months (96.5%) · gaps 15 months (3.5%)

AI toolingPlatform & IaCDataObservabilityIdentity & collaborationCloudApplicationsVirtualization & storageHPC
WorldQuant — Senior Engineer (DevOps)2024 – 2026

Senior Engineer for core services at a global quantitative research and investment firm — Montevideo, Uruguay

IndustryFinanceQuantitative Research & Investment
Platform & IaCKubernetesDockerOpenFaaSTerraformAnsibleConfig-as-CodeGitLab (on-premises) AIGitHub CopilotClaude CodeClaudeRooCodeOpenCode DataKafkaAirflowGCP Postgres (pgvector)ClickHouse ObservabilityGrafanaVictoriaMetrics HPCSlurm Identity & collaborationAzure MS Entra/LDAPJiraConfluenceZoomPeerTube
Globant — Senior DevOps Engineer2019 – 2024

Distributed, multi-team engineering for healthcare digital transformation initiatives — Argentina (Hybrid)

IndustryBankingHealthcare
CloudAWS (EC2/EKS)GCP (Cloud Run/Workflows) CI/CD & IaCJenkinsTerraformPulumiGitHub Enterprise / GitLabSonarQubeDocker ObservabilityELK Stack ApplicationsJ2EE + Spring + AngularRetool AIAI-assisted engineering tools
INVAP S.E. — Platform & Infrastructure Engineer2012 – 2019

Platform, infrastructure, and data-center engineering across a complex multi-project environment — Bariloche, Argentina

IndustryNuclearAerospace & Defense
Virtualization & storageVMwareCephAWS S3IBM DS3500EMC VNX5200IBM V5000 HPCTorque/MauiSlurmBeowulf clusters Automation & deliveryAnsibleJenkinsGitLab (on-premises)Jira DatabasesPostgreSQLMySQLOracleMongoDB Monitoring & servicesNagiosMuninOpenLDAPSquidSUSEPentaho

Earlier experience — 1990 – 2012

Independent Consultant — Internet Labs of Nevada2008 – 2012

Hosting and infrastructure-focused consulting; led an ISP-scale DNS platform reengineering — Buenos Aires, Argentina

IndustryInternet Services
Networking & systemsLinuxDNS (ISP scale)firewallsVPNsNATSSL/TLS ApplicationsApachePHP DatabasesMySQL Virtualization & storageVPS virtualization
Electronic Data Systems (EDS) — Senior Programmer / Systems Analyst2003 – 2007

Software development for an international bank in an offshore delivery model — Buenos Aires, Argentina

IndustryBanking
Applicationsbanking systems (Wholesale, Fixed Income, Equities; Basel 2)offshore delivery
Independent Consultant — Senior Programmer / Systems Integrator2001 – 2003

Web hosting virtualization architecture and a DNS management web interface — Buenos Aires, Argentina

IndustryInternet Services
Virtualization & storageweb hosting virtualization Networking & systemsDNS management Applicationsweb application development
Mark-2K / Empresite S.A. — System Architect / Project Leader1999 – 2001

Led development of a travel-industry web portal with GDS integration — Buenos Aires, Argentina

IndustryTravel & Tourism
Applicationsweb portal developmentGDS (Global Distribution Systems) integration
Diebold DBP — Senior Programmer1999

System integration, multimedia, and ATM programming and monitoring — Buenos Aires, Argentina

IndustryBanking
ApplicationsATM programming and monitoringsystems integrationmultimedia
TYSSA — Telecomunicaciones y Sistemas S.A. — Project Leader / System Architect1998 – 1999

Led billing system development for Telefónica de Argentina S.A — Buenos Aires, Argentina

IndustryTelecommunications
Applicationstelecom billing systems
Miniphone S.A. — Project Leader1998

Value-Added Services: conception, development, and implementation of products — Buenos Aires, Argentina

IndustryTelecommunications
Applicationstelecom value-added services (VAS) product development
Unifon / TCP S.A. — Network Analyst1997 – 1998

Network and corporate startup support in a telecom environment — Buenos Aires, Argentina

IndustryTelecommunications
Networking & systemscorporate networkingTCP/IP
Valmet Automation — Software Engineer1995 – 1996

SCADA development for Transportadora de Gas del Norte (TGN) — Calgary, Canada

IndustryOil & Gas
ApplicationsSCADA (oil and gas pipeline systems)
Independent Consultant — Open Technologies and Internetworking1994 – 1995

Development on open technologies and TCP/IP programming — Argentina

IndustryTelecommunicationsBanking
Languages & toolsprogramming in Cshell scripting Networking & systemsUnixTCP/IP programming (BSD Sockets, TLI)client-server applications ApplicationsCTI integrationopen technologies
GByA Sistemas SRL — Senior Analyst Programmer1990 – 1994

Software development for banking and services environments — Buenos Aires, Argentina

IndustryBankingPharmaceutical
Languages & toolsCOBOLCbashawkperl Networking & systemsAT&T UnixTCP/IPclient-server DatabasesInformixOracleSybase