Miguel Ángel Nieto - Senior Performance Engineer
Miguel Ángel Nieto
Senior Performance Engineer @ MongoDB
Expert in Database Optimization, GNU/Linux & Security
Process: mongod [PID: 27017]
Thread 0 Crashed: Query Execution
Exception: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0
Backtrace:
0 libmongod.so query_planner::optimizeQuery()
1 libmongod.so PlanCache::getBestPlan()
2 libmongod.so DatabaseImpl::executeQuery()
3 easter_egg.js closeTerminal()
Error: Cannot read property 'plan' of undefined
Caused by: User clicked the forbidden button
(Click to reboot terminal...)
01. About Me
I've got more than 20 years of experience in different IT positions. I've been System Administrator, Technical Account Manager, DBA, Consultant, Support Manager, Support Engineer and Technical Trainer.
Currently, I work as Senior Performance Engineer in the Product Performance Team of MongoDB. My focus is on making databases faster, more scalable, and ensuring they meet the highest performance standards.
My career has taken me from managing support operations across EMEA to deep technical work on database internals. I've specialized in replication, sharding, query optimization, and performance tuning for some of the world's most demanding database workloads. Whether it's catching performance regressions before they reach production or resolving complex distributed systems issues, I thrive on the challenge.
Beyond the screen, I'm an avid scuba diver. I travel the world following sharks and manta rays. I also enjoy electronic music festivals and complex troubleshooting challenges. When I'm not optimizing queries, you might find me exploring underwater caves or at a trance festival somewhere in Europe.
02. Experience
Senior Product Performance Engineer
MongoDB | Apr/2022 - PresentImprove scalability and efficiency through performance analysis and tuning. Benchmark features to catch regressions and partner with engineering to resolve bottlenecks.
Senior Technical Services Engineer
MongoDB | Feb/2019 - Apr/2022Database Core team member specializing in replication, sharding, and query optimization. Lead engineer for key accounts and internal mentor.
Technical Services Engineer
MongoDB | Nov/2017 - Feb/2019Database Core team member providing global support for replication, sharding, backups, and security.
Technical Team Lead
Percona | May/2017 - Oct/2017Led support operations and mentored engineers across MySQL and MongoDB stacks. Escalation point for complex issues and technical leadership.
Senior Technical Services Engineer
Percona | Oct/2015 - May/2017Delivered consulting and support for MySQL, MongoDB, and Galera Cluster. Authored performance content for the Percona Database Performance Blog.
Regional Support Manager, EMEA
Percona | Jun/2013 - Oct/2015Managed EMEA support operations, quality assurance, and SLA compliance. Trained new engineers and optimized department procedures.
Senior Support Engineer
Percona | Oct/2011 - Jun/2013Investigated and resolved complex issues across MySQL, MariaDB, and Percona products. Provided 24x7 emergency assistance and mentored new staff.
Technical Consultant - Technical Account Manager
Arsys | Jan/2011 - Sep/2011Provided Second Level Support for Linux/Windows environments and managed key customer accounts as Technical Account Manager (TAM).
System Administrator
Irontec | May/2007 - Dec/2010Specialized in virtualization, monitoring, and HA services. Delivered technical training and consultancy on open-source technologies.
System Operator
Kider | Dec/2003 - April/2007Hardware and software maintenance in Windows/Linux environments. Deployed security solutions and provided remote technical support.
03. Certifications
OSCP
Offensive Security • 2022
Ethical Hacker
Udacity • 2021
Cloud DevOps Engineer
Udacity • 2020
AWS Solutions Architect Professional
Amazon Web Services • 2018
AWS Solutions Architect Associate
Amazon Web Services • 2018
Tableau Desktop Qualified Associate
Tableau • 2018
Artificial Intelligence
Udacity • 2018
Deep Learning Foundations
Udacity • 2017
Machine Learning Engineer
Udacity • 2017
Data Analyst
Udacity • 2016
MongoDB DBA
MongoDB • 2015
MySQL 5.6 DBA
MySQL • 2015
Citrix XenApp 6
Citrix • 2011
MySQL 5.0 Dev
MySQL • 2011
MySQL Cluster 5.1
MySQL • 2010
Oracle 11g Administrator Associate
Oracle • 2010
MySQL 5.0 DBA
MySQL • 2009
Cisco CCNA
Cisco • 2009
GNU/Linux LPIC-1
LPI • 2009
04. Testimonials
" Miguel is a brilliant engineer and a great colleague. He is always willing to learn new things and has a natural talent to look into details and solving complex issues. I totally recommend him as a team lead.
Manuel Fontan
Technical Services Engineer @ MongoDB
" Besides being a top-notch engineer, he also demonstrated exceptional management, communication and mentoring skills, earning the confidence and respect of customers and those reporting to him. He is always punctual, respectful and constructive. Whenever I assigned to a task or project to Miguel, I could be sure that he will deliver in time.
Peter Farkas
Director of Support @ Percona
" Miguel is a real expert in all MySQL-related technologies, from routine MySQL DBA tasks to troubleshooting complex performance, InnoDB, Percona XtraDB Cluster & Galera issues. He managed to study and master almost every new technology we had to support, up to TokuDB and MongoDB recently.
Valerii Kravchuk
Principal Support Engineer @ Percona
" Tiene una gran facilidad para gestionar distintas tareas al mismo tiempo y siempre consigue sacar adelante sus responsabilidades con buen resultado. Tiene una gran capacidad de trabajo, tanto individualmente como en grupo, y sus conocimientos son excelentes en los distintos servicios basados en UNIX, además de ser un experto en MySQL.
Rubén Gaitán
Technical Account Manager @ Arsys Internet
" Miguel Angel es una de las personas más profesionales y trabajadoras con las que he trabajado nunca. Durante los años que pasó en Irontec, su crecimiento fue espectacular y su capacidad de trabajo enorme. Una de esas personas que quieres tener siempre en tu equipo porque es garantía de éxito seguro. Gracias por los años compartidos.
Iker Sagasti
CEO @ Irontec