Mayel Espino's Resume

Phone:(510)512-5323 | Email:mayel.espino@gmail.com | Location: San Francisco Bay Area | https://www.linkedin.com/in/mayelespino/ | Book a Google meeting with me

Professional Summary

Software developer
✔ Knowledge of 10+ programming languages and continuously learning.
✔ Coding expertise on Mainframe, midrange, desktop computers, and microcontrollers.
✔ Participated in important company architectural transitions.
✔ Expertise in Cloud Computing, Git,Databases,Linux,Docker, and CI/CD Pipelines
Engineer for engineers
✔ Team lead at Candle, PayPal and Microsoft.
✔ Infrastructure and tool development: Deployment systems, monitoring tools, APIs for other engineers

Inventor and innovator
✔ Invented a service patented by Microsoft.
✔ Inventor of 6 patents and co-inventor of 1 patent
Niche Skills
✔ Computer engineering degree in both hardware and software.
✔ Assembler,Fortran, Cobol, Pascal, Perl.
✔ Mainframe OS (MVS)
✔ NetApp: System Manager and OnTap (ClusterShell)

Portfolio:
✔https://hephaestus.rocks

Skill Set

Languages:	C/C++, Python, Go, Rust (learning), Kotlin (learning), R, Java, C#, Bash, Assembly, Fortran, COBOL, Pascal, Perl
DevOps & Infra:	Docker, Kubernetes, Terraform, Helm, SaltStack, Ansible, Puppet, Chef, CI/CD (Rapid, Jenkins, GitHub Actions)
Cloud Platforms:	Azure, AWS, GCP, Azure Functions, Lambda, AKS, GCloud
Databases:	Oracle, Sybase, MongoDB, Redis, Cassandra, Microsoft Graph DB
Monitoring & Observability:	DataDog, Monit, custom-built tools
Operating Systems:	Linux, Unix, Windows, MVS

Relevant Experience

Google [Contract]

From:	Jul 2023 (06/2023) To: May 2024 (05/2024)
Role:	Senior Devops engineer at Omnilab
Team:	DOPS, the operations support team for Omnilab and Firebase labs.
Skills used:	Python, Go, Blaze, Cider (IDX), Critique (Code review) , Salt, Rapid (CI/CD), Borg, GCloud, G3.
Responsibilities:

Built automation tools for Firebase Labs infrastructure, scaling support for Android testing.
Developed services using Python and Go, supporting CI/CD and device fleet monitoring.
Led systems troubleshooting and improved incident response for GCloud-based infrastructure.

Microsoft

From:	Feb 2018 (02/2018) To: Apr 2022 (04/2022)
Role:	Senior software engineer.
Teams:	Office of the CTO.
Skills used:	c#, Gremlin, Graph DB, AKS (Kubernetes), Go, Python, Kusto tables, PowerShell, PowerBI.
Responsibilities:

Invented a patented service platform used for cloud monitoring and simulation applications.
Led a PoC for Azure-based event service to coordinate messaging across services.
Provided architecture support and best practices via Azure concierge service.

Apple

From:	Apr 2016 (04/2016) To: Dec 2017 (12/2017)
Role:	Site reliability engineer
Team:	AML Infrastructure Engineering - AST Apple Standard Toolkit.
Skills used:	salt-stack - python - bash scripting - Ansible - Cassandra
Responsibilities:

Reduced support ticket response time by 85% via process automation and triage redesign.
Developed SaltStack modules to safeguard production systems and reduce risk.

Special projects - Portfolio

Rust: MylUtils

This is a Pyhon module to be used in Python programs, but it is implemented in Rust. When the Python code calls mylutils it is actually calling Rust functions.
The reason I used Rust to implement mylutils is Rust's core guarantees are memory safety, thread safety, and performance without a garbage collector, these are specially needed in systems programming.
In short what this module does in python is to get system information you can get from the command line, but programmatically whithout "shelling out", invoking a system command and parsing the output. Here is an example

import mylutils

def is_cpu_idle(threshold=50):
    cpu_stats = mylutils.read_proc_stat_cpu()
    total_time = cpu_stats['total_time']
    idle  _time = cpu_stats['idle_time']
    return((idle_time/total_time)*100 < threshold)

mylutils also includes some helper functions to read text files in one simple, atomic step

import mylutils

for line in mylutils.read_txt("test.txt"):
    print(line)

To learn more about the implementation please see: https://github.com/mayelespino/pyrust.

Experience 1991 to 2016

FireEye	Senior DevOps engineer	2016	Ansible Tower, Prometheus, ELK Stack, Docker, Python.
Ooyala	SRE	2015	Chef, Ruby, AWS, Consul, Data Dog, Haproxy, Squid, Jira, OpenShift, OpenStack.
Symantec	Senior software engineer	2014 to 2015	Python, Django, PyCharm, SVN, Vagrant, AWS, Monit, celery, Rabitt MQ, messaging, OpenShift.
PayPal	Senior software engineer	2006 to 2014	C++, Java, Perl, Python, Ruby, Bash, AppScan (IBM), Jenkins, Jaws, Maven, github, RH Linux, REST API, Oracle DB, Django, Puppet,SOAP, clear case, RH Linux. Project Management.
E*trade	Senior software engineer	2006	C++, Tuxedo, Java, Perl & SQL, Linux.
Kabira	Senior software engineer	2006	Kabira’s proprietary language C++, Solaris Unix.
Verizon	Senior software engineer	1996 to 2004	C++, IBM’ Unix (AIX), HP’s Unix, Solaris, MVS, Windows and many others. Web-sphere, MQ series, Java Servlets, Insure++, xdbc.
Candle Corporation	Software engineer/Team manager.	1991 to 1996	Candle’s proprietary languages, C++, Rexx, assembler. Project Management.

Education

U.A.C.J. [1984 - 1990] - B.S. degree in computer engineering, fully accredited in the United States.

From:	Dec 2024 (12/2024) To: Aug 2025 (08/2025)
Role:	Senior System engineer at Enterprise Storage
Team:	Enterprise Engineering Storage
Skills used:	Python,NetApp, Isilon.
Responsibilities: