Profil professionnel
Vue d'ensemble
Expérience
Formation
Compétences
Projets réalisés
Informations complémentaires
Languages
Chronologie
Generic
Guillaume O'Neill

Guillaume O'Neill

System Optimization Engineer - Full Stack Web developper
Clermont-Ferrand

Profil professionnel

Senior System Engineer with 20+ years of hands-on experience across high-impact IT projects.
Specialized in Linux ecosystems, Django, Python, and PostgreSQL, with a sharp edge in AWS Cloud operations (EC2, RDS, EMR, and Machine Learning). Proven ability to architect resilient infrastructures and optimize performance under demanding conditions.

Strategic mindset, versatile skills, and a drive to deliver — even under pressure. Thrives in complex, high-stakes environments with calm and focus.

Vue d'ensemble

24
24
years of professional experience

Expérience

Django Senior Développeur

Kocliko
Bordeaux
04.2023 - 05.2025
  • Création plateforme Web : www.kocliko.co & prod.kocliko.co
  • Création API (DRF) de communication avec Pléiades (AZUBA)
  • Batch/Cron de provision et de Collecte de + 30 000 capteurs
  • Création d'un Traitements Batch pour analyser les températures
  • Projet de traduction automatiques en 79 Langues (Google API)
  • Migration Mysql vers PostgReSQL + Tablespace Partitionés
  • Gestion et Maintenance AWS / EC2 - RDS et Serveur Linux

Python System Engineer & Web Architect

AirBus Industry
Toulouse
03.2021 - 04.2023
  • Gestion et Optimisation de la Base Oracle des pièces détachées (TDREP)
  • Digital Cockpit Software on A320 & A340 -Ada et C++
  • Maintenance Digital Nesting et 3D Drivers en Python
  • Mise en place de la plateforme Skywise (Pythonon PySpark)
  • Lead dev sur le projet DDMS (Java, C++)

Django - Python Web Developer

Eventbrite
San Francisco
07.2019 - 03.2021
  • Https://www.eventbrite.com
  • Worked with the company for five years as the lead developer
  • Brought the tech to a point that allowed the company to raise $100M
  • Administration of the PostgreSQL Databases
  • Created a powerful Eventbrite public API
  • Created a sophisticated Marketing administration tool
  • Released an extended Search engine for events
  • Universal translation system (I18N)


CTO and Python Lead Developer

Banque Sogexia
Luxembourg, Banking Admin
10.2017 - 07.2021
  • Https://www.sogexia.com
  • Created a common API to connect financial institutions over a global & single web platform. (Python & Node.js)
  • Structured and Implemented a highly secure access.
  • Installed complex banking administration tools
  • Developed institution-specific search engine
  • Created a uniq Knowledge databases
  • Setup AWS Cloud architecture - EC2 & RDS (PostGreSQL)

Python Lead dev

Lockheed Martin
Bethesda - USA
05.2013 - 10.2017
  • ADA SOFTWARE ON F22 RAPTOR & F35B STOL PROGRAMM / Glass Cockpit Software.
  • DOD Hunts Software for F-35s. (Python, C++)
  • Software Maintenanceof C-5M 𝐚𝐯𝐢𝐨𝐧𝐢𝐜𝐬 Components,
  • RERP. Refactoring of Glass Cockpit (ADA / C++, Python)
  • TCAS and the ACAS (C++, ADa).
  • 𝐌𝐢𝐬𝐬𝐢𝐥𝐞 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐀𝐧𝐚𝐥𝐲𝐬𝐢𝐬 𝐒𝐨𝐟𝐭𝐰𝐚𝐫𝐞 in Python.
  • Analysis tools for the FBM Missile Program. Developed simulation and analytics software using 𝐏𝐲𝐭𝐡𝐨𝐧, integrated with 𝐎𝐫𝐚𝐜𝐥𝐞.


CTO BOEING & LEAD DEV

Boeing
Evrett - USA
07.2008 - 05.2013
  • Boeing – Avionics & Digital Systems Engineer
    Worked on AWACS (E-3A) digital cockpit software using Spark (C subset) and Model-Based Development.Refactored FMS and maintained avionics systems (AN/APN-241, TCAS, ACAS, GATM, INS/GPS) on C-17 Globemaster III.
  • Developed and tested Fly-By-Wire and missile warning systems using Ada, C++, VHDL, Assembly, and Python.
    Engineered real-time systems on PowerPC for 737 avionics using SimuLink (Fortran subset)
  • Built a secure internal web app with Python, backed by Oracle Exadata X8M.
  • Integrated Oracle Identity Cloud (OAuth2) for user authentication and access control.

Senior Solution Architect

EMC - DELL Computer
Boston
09.2001 - 07.2008
  • Engineer Consultant for Computer Storage and Databases
  • Worked closely with Boston's engineering department (Speed Group) managing performance and optimization of DMX and VMAX storage unit
  • Developed Java, C++, and .Net programs in mathematical simulation and VMAX to optimize databases hosted by Oracle and DB2 server storage
  • Authored numerous unique tuning tools unique to automate MVS site analysis (CMF Analyzer FMR) that have been utilized globally since 2001

Formation

BAC - S - Sciences

Baccalaureate C (S Series)
Paris

AB/SM Program – Computer Science - 6 Years - Machine Intelligence, and Complex Computing Infrastructures

Harvard University
Cambridge - USA

Master of Science in Robotics and Intelligent Syst - Robotics

MIT
Cambridge - USA

Quantum Engineering and Technologies - Quantum

MIT
Cambridge - USA

Machine-Learning Expert & Certification - AI

Cornell University
Ithaca, New York

Compétences

  • OS : Linux Debian, Ubuntu, RedHat

  • Backend: Django, Python, Java, Ada, C

  • Databases: MariaDB, PostGreSql, Oracle

  • Network: HTTPS, SSL, NGINX, FireWall, IPtables

  • Cloud: AWS EC2, RDS, Google API, Docker

  • FrontEnd: HTML5, CSS, Jquery, Ajax

  • JS Framework: Angular, React, Node, BootStrap

  • Search: ElasticSearch,

  • Optimization: Tuning Tools, SEO

  • Storage: Vmax, Symmetrix, VNX

  • MainFrame: MVS, IBM ZOS, CMF, RMF

  • Math: MatPlotLib, Numpy, Pandas

  • E-Learning : PyTorch, AWS machine Learning

  • Big Data : Apache Technology

  • Projects : Jira, Notion, Unfuddle, Agile

Projets réalisés

Eventbrite : Events Management

Sogexia : Bank WebSite

Kocliko : IFC & MQTT

Lockheed : F35B Software

EMC/Dell : Vmax & Symmetrix

Boeing : AWACS Program

AirBus : A320 & A340 Software


Informations complémentaires

Flight pilot, jazz pianist, exoplanet research, Seti@Home contributor, robotics

Languages

French
Langue maternelle
Anglais
Bilingue
Russe
Intermédiaire (B1)
Espagnol
Intermédiaire (B1)

Chronologie

Django Senior Développeur

Kocliko
04.2023 - 05.2025

Python System Engineer & Web Architect

AirBus Industry
03.2021 - 04.2023

Django - Python Web Developer

Eventbrite
07.2019 - 03.2021

CTO and Python Lead Developer

Banque Sogexia
10.2017 - 07.2021

Python Lead dev

Lockheed Martin
05.2013 - 10.2017

CTO BOEING & LEAD DEV

Boeing
07.2008 - 05.2013

Senior Solution Architect

EMC - DELL Computer
09.2001 - 07.2008

BAC - S - Sciences

Baccalaureate C (S Series)

AB/SM Program – Computer Science - 6 Years - Machine Intelligence, and Complex Computing Infrastructures

Harvard University

Master of Science in Robotics and Intelligent Syst - Robotics

MIT

Quantum Engineering and Technologies - Quantum

MIT

Machine-Learning Expert & Certification - AI

Cornell University

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Guillaume O'NeillSystem Optimization Engineer - Full Stack Web developper