Sebastien Do · Zurich CH

Technical
Project Manager
& Data Center Engineer

8+ years delivering IT infrastructure projects across
hyperscale, research, and high-density AI environments.

Currently building two-phase immersion cooling and DLC rack systems for high-density GPU clusters — the boring, reliable backbone that makes AI possible.

STATUS // ON_DUTY
8+
Years Delivery
5
Major Sites
GPU
High-Density
2P
Immersion Cooling
role // TPM / DC Engineer
focus // 2-phase immersion · DLC racks
based // Horgen, Switzerland
stack // thermal sim, GPU, rack, fiber
langs // FR · EN · DE · VI
01

About the work

profile
Data center engineer and project lead with 8+ years of experience delivering IT infrastructure projects across hyperscale, research, and industrial environments. Currently focused on two-phase immersion cooling and direct liquid cooling (DLC) racks for high-density GPU clusters at a stealth-stage AI infrastructure startup — designing thermal solutions, validating prototypes, and bringing them into live production environments. Previously at AWS managing inbound capacity, network and cabling deployments across European data centers.

Comfortable owning projects end-to-end — from planning, risk and stakeholder management through to live data center execution — and equally at home running technical discussions, coordinating vendors, and working hands-on with hardware on the floor.

Earlier in my career I spent two years at CERN as the main point of contact for fiber optics infrastructure on the Meyrin site — supervising civil-engineering work permits, performing OTDR testing and fusion splicing, and helping integrate beam-loss monitors into the ELENA antimatter decelerator. Working alongside accelerator physicists and a dozen specialised CERN groups taught me how to deliver precision infrastructure in an environment where everything has to work the first time, on schedule, with no shortcuts. That mindset is what I bring to every project since.
02

Selected experience

click to expand
03

Side projects

tools & experiments
LIVE FEED
ADS-B · OPENSKY
aircraft: refresh: 6s
// PERSONAL · OSINT

Live Aviation Tracker

Real-time flight tracking dashboard built on public ADS-B data feeds. Visualises live aircraft positions, filters by region and altitude, and identifies which aircraft are currently airborne in any given area.

ADS-B OpenSky API Leaflet JS / Python WebSocket
HALL A · DC-ZRH-01 — LOAD
NOMINAL WARN HOT EMPTY
// INTERNAL TOOL · ITSM

DC Floor Plan & ITSM Tool

Custom internal management tool for data center operations: interactive floor-plan layout, rack capacity tracking, change-request workflow, and live status indicators tied to the ticketing system. Built to replace spreadsheets-as-source-of-truth.

React SVG layout REST API ITSM workflow Postgres
COLD PLATE · GPU H100 ΔT —
IN OUT DIE 0 DIE 1 82°C 86°C 35° 68° 86°
peak: 86.4°C ΔT: 12.8K flow: 2.4 L/min
// SIMULATION · THERMAL R&D

Cold Plate Thermal Simulation

CFD-based simulation tool to model hot zones across DLC cold-plate designs for high-TDP GPU workloads. Visualises die-level hotspots, coolant flow paths, and pressure drop, helping iterate plate geometry and microchannel layouts before manufacturing.

CFD Python NumPy DLC / 2-phase GPU thermal
PAX MANAGER · CH-EU ● LIVE
2 137
passengers today
186
in queue now
14:22 FLT-2241 · GVA → ZRH 142
14:35 FLT-1108 · CDG → ZRH 198
14:48 FLT-3340 · LHR → ZRH 87
15:02 FLT-7712 · FCO → ZRH 115
// MOBILE · ANDROID

Inbound Passenger Manager

Android application for managing inbound passenger flows for ground-handling teams — handling 2 000+ passengers a day across multiple inbound flights. Real-time queue tracking, batched check-in, offline-first sync, and dashboard reporting.

Android / Kotlin Room DB REST API Offline-first 2 000+ pax/day
04

Core skills

stack

Project Delivery

IT Infra PM Change Mgmt Risk & Dependencies Stakeholder Comms Vendor Coordination SLA Reporting Agile Mindset

Data Center & Cooling

Two-Phase Immersion DLC Racks Cold Plate Design CFD / Thermal Sim GPU Servers Compute Nodes Racking & Cabling Power Planning Floor-Plan Design High-Density Ops

Networking & Systems

Structured Cabling Fiber Optics OTDR Fusion Splicing Dark Fiber Network Engineering Building Automation Electrical Eng.

Tooling & Process

Ops Documentation Risk Logs Issue Trackers Deployment Reports Process Automation Knowledge Base Cross-Functional
05

Education

BTS Électrotechnique
CFAI Formavenir · Thyez, FR2018
DUT Génie Électrique et Informatique Industrielle
Université de Savoie · Annecy, FR2015
Baccalauréat STI2D
Lycée Jean Monnet · Annemasse, FR2014
06

Languages

Frenchnative
Englishprofessional
Vietnameseconversational
Germanbasic