01
Hello, I'm
02
Mayel Espino.
03
An engineer for engineers,
04
that builds at scale.

Engineer for engineers. Inventor. Creator. Trailblazer. Founding team member — more than once. I don't just build systems; I define the ground they run on.

Scroll
35+
Years experience
7
US Patents
6
FAANG employers
8
Open source repos
Open source projects

Built from scratch,
running in production.

01 — Monorepo · Infrastructure
Homelab

Monorepo of everything running in my home lab — Raspberry Pi nodes, Kubernetes on Multipass VMs, SaltStack, Ansible provisioning, and Telegram bot services — stitched together as git subtrees.

KubernetesAnsibleSaltStackGit subtrees
github.com/mayelespino/homelab →
02 — Python + Rust
MyLUtils

Open source Python package with performance-critical utilities written in Rust. My first published library.

PythonRustPyPI
github.com/mayelespino/pyrust →
03 — Raspberry Pi · Telegram
Chaperon

Safety check-in system on Raspberry Pi. If a scheduled check-in is missed, Telegram alerts go out. Packaged on Docker Hub.

PythonTelegramDockerRaspberry Pi
github.com/mayelespino/chaperone →
04 — Raspberry Pi · SMS + Web
Gate-pi

Home lab gateway with dual interfaces — a web dashboard and a two-way SMS channel. Hub for speaker-pi, sensor-pi, and bookmarks-pi.

PythonRaspberry PiSMSREST
github.com/mayelespino/gate-pi →
05 — Raspberry Pi · IoT
Sensor-pi

REST API for a GPIO HAT with six live sensors: internal temp, external temp, luminosity, humidity, human presence (motion), and barometric pressure.

PythonGPIOIoTREST
github.com/mayelespino/sensor-pi →
06 — Raspberry Pi · Audio
Speaker-pi

REST API for internet radio playback and scheduled voice commands piped to Google Home. Cron-driven automation built in.

PythonRESTCronGoogle Home
github.com/mayelespino/speaker-pi →
07 — Multi-language · Practice
Code

Long-running exercise repo — 440+ commits of algorithms, data structures, and database work across Python, C++, Rust, and Go. Where I sharpen the fundamentals.

PythonC++RustGo
github.com/mayelespino/code →
08 — R&D · Experiments
Learn RnD

R&D sandbox for new tech — Terraform, Docker and Kubernetes (including microk8s), PyO3 Python↔Rust bindings, Go, C++, and robotics experiments, plus Linux tooling notes.

TerraformKubernetesPyO3Go
github.com/mayelespino/learn_rnd →
Intellectual property

7 US Patents across
two companies.

Microsoft
Computing system simulation and testing environment

A service and infrastructure architecture for simulating and testing distributed computing environments at scale. Invented at Microsoft.

Microsoft & MCI / Verizon — co-inventor
Method and system for providing conferencing services

Cross-company collaboration between Microsoft and MCI (now Verizon) to patent a conferencing delivery architecture.

MCI / Verizon Business — LDAP suite (5 patents)
Lightweight directory access protocol infrastructure for resource-constrained devices

A five-patent suite covering the full stack: LDAP client, server-side brokering, message routing, and the API for devices with limited processing capacity.

About me

35 years forging
infrastructure.

I'm a senior SRE and platform engineer based in the Bay Area with over three decades of experience building systems that operate at internet scale. My career spans the full arc of computing — from mainframes, midrange systems, and embedded hardware to cloud-native platforms — through some of the most demanding infrastructure environments in the industry.

I've filed 7 US patents — spanning computing simulation environments, conferencing infrastructure, and LDAP systems for constrained devices. I've also led projects and teams, pairing hands-on engineering with project management. Outside of work I run an active homelab on Raspberry Pi nodes, experiment with SDR, microcontrollers, and electronics, and publish open source tools.

Core stack: C/C++, Python, Go, Kubernetes, Terraform, GCP / AWS / Azure.

Google Meta Microsoft Apple eBay / PayPal Verizon
Full history on LinkedIn ↗
Languages
C / C++ Systems
Python Automation & tooling
Go Services
Rust Learning · Personal projects
COBOL Mainframe
Cloud & automation
Kubernetes Orchestration
Terraform IaC
GCP / AWS / Azure Cloud platforms
Ansible / Salt / Chef / Puppet Config mgmt
Data
Oracle / Sybase RDBMS
MongoDB / Redis / Graph DBs NoSQL
Pandas Data analysis
Platforms & hardware
Mainframe & midrange Enterprise systems
Microcontrollers Embedded systems
Raspberry Pi + Docker Homelab
Leadership
Project management Team leadership
Get in touch

Let's work
together.

contact@mayel.tech

Open to senior SRE, platform engineering, and Software development opportunities. Also happy to discuss open source collaboration or consulting.