Mayel Espino

(510) 512-5323·contact@mayel.tech·San Francisco Bay Area·linkedin.com/in/mayelespino·
Portfolio: mayel.tech
Professional Summary
Senior software and infrastructure engineer with 35+ years of experience building and leading teams at Google, Meta, Microsoft, Apple, and PayPal. Inventor of 7 patents — including a Microsoft-patented cloud monitoring and simulation platform — and a hands-on leader of infrastructure, DevOps, and embedded systems programs. Proven track record designing distributed systems, CI/CD pipelines, and fleet management tooling at hyperscale. Equally at home writing low-level C++ and architecting cloud-native Kubernetes platforms.
Patents
Skills
Languages: C/C++, Python, Go, Java, C#, R, Bash
DevOps & Infra: Docker, Kubernetes (AKS/GKE), Terraform, Helm, SaltStack, Ansible, Puppet, Chef, CI/CD (Rapid, Jenkins, GitHub Actions)
Cloud: GCP (Borg, GCloud, G3), AWS, Azure, Azure Functions, Lambda
Databases: Oracle, Sybase, MongoDB, Redis, Cassandra, Microsoft Graph DB
Observability: DataDog, Prometheus, ELK Stack, Monit, custom-built tooling
OS: Linux, Unix, Windows
Legacy / Niche: Rust (learning), Kotlin (learning), Assembly, Fortran, COBOL, Pascal, Perl, MVS, NetApp OnTap
Experience
Google [Contract]|Senior Embedded Engineer
Jun 2023 – Present·HILT team
  • Championed adoption of Ansible for fleet configuration management; personally authored 95% of the playbooks now governing all HILT device provisioning and state enforcement.
  • Contributed to hardware design of the team's most complex device under test by designing and 3D-printing a custom mechanical component, improving device useability.
  • Authored 50% of the team's Standard Operating Procedures (SOPs), establishing repeatable processes for device bring-up, fleet management, and incident response.
  • Led bring-up and integration of multiple complex, in-house designed hardware devices into the team's managed fleet — including physical assembly, OS configuration, and network provisioning.
Meta|Senior Systems Engineer
Dec 2024 – Aug 2025·Enterprise Engineering Storage
  • Developed internal observability and alerting tools in Python/Hack, improving incident detection time and system reliability across enterprise storage infrastructure.
  • Managed petabyte-scale NetApp and Isilon storage systems serving thousands of internal users, maintaining high availability through proactive capacity planning and on-call support.
  • Integrated MetaMate and DevMate AI assistants into team workflows, reducing code review cycle time and accelerating feature delivery.
Google [Contract]|Senior DevOps Engineer
Jun 2023 – May 2024·DOPS — Omnilab / Firebase Labs
  • Built automation tooling that scaled Firebase Labs' Android device fleet testing infrastructure, enabling concurrent testing across a significantly larger device pool.
  • Developed backend services in Python and Go supporting CI/CD pipelines and real-time device fleet monitoring.
  • Led systems troubleshooting efforts and improved incident response playbooks for GCloud-based infrastructure, reducing mean time to resolution.
Microsoft|Senior Software Engineer
Feb 2018 – Apr 2022·Office of the CTO
  • Invented a cloud monitoring and simulation service platform that was patented by Microsoft — used for event coordination and observability across Azure services.
  • Led a proof-of-concept for an Azure-based event service to coordinate messaging across distributed services, later adopted into production architecture.
  • Provided architecture guidance and Azure best practices to internal teams via the Azure concierge program.
  • Stack: C#, Go, Python, Gremlin, Graph DB, AKS, Kusto, PowerShell, PowerBI
Apple|Site Reliability Engineer
Apr 2016 – Dec 2017·AML Infrastructure — Apple Standard Toolkit
  • Reduced support ticket response time by 85% through process automation, triage redesign, and runbook development.
  • Developed SaltStack modules that enforced configuration hygiene across production systems, reducing drift-related incidents.
Earlier Experience  (1991 – 2016)
PayPal — Senior Software Engineer  |  2006 – 2014
  • 8-year tenure across security, payments, and platform teams. Led projects involving REST APIs, Oracle DB, and multi-language backend services (C++, Java, Python, Ruby). Managed project delivery as technical lead.
Verizon — Senior Software Engineer  |  1996 – 2004
  • 8-year tenure building carrier-grade telecom software across Unix (AIX, HP-UX, Solaris), Windows, and MVS. Developed with C++, Java Servlets, MQ Series, and WebSphere in a high-availability environment.
FireEye