Théophile Delmas

Architecture, AI integration, privacy by design.

I help teams architect AI-powered products that are robust, ethical, and ready for regulation. Backend systems, AI integration, privacy-first infrastructure - with a philosophy background that shapes how I think about what technology should do.

Live now
ClimateUmbral SueloMio PreuJust

Projects

Things I've worked on

ClimateUmbral project image

ClimateUmbral

A live climate instrument for Europe: every 10×10 m of ground, sealed or alive — and the nearest cool place when the heat turns dangerous.

SueloMio project image

SueloMio

Three honest answers about one rural parcel in Spain - can you live there, can you build, what is it good for - from official public data.

Bount.ing project image

Bount.ing

A marketplace idea for funding open-source projects. I worked on the backend, payment flows, and trust mechanisms.

Preujust.cat project image

Preujust.cat

A price transparency tool for Catalunya. Collects supermarket prices and lets people compare them.

42 Barcelona project image

42 Barcelona

Helped set up and run the technical and pedagogical infrastructure for the campus — servers, tools, and student systems.

Rooster project image

Rooster

An Android alarm that wakes you with the sunrise at your location. Built with Kotlin and Jetpack Compose.

Smokeless project image

Smokeless

A quit-smoking tracker for Android. Log sessions, resist cravings, watch your progress over time.

OSmosis project image

OSmosis

An open-source platform to flash custom ROMs, firmware, and alternative OS on 200+ devices - phones, tablets, scooters, e-bikes, routers, SBCs, e-readers, cameras, and more.

Lethe project image

Lethe

A privacy-hardened Android OS built on LineageOS 22.1 with Tor-by-default, burner mode, device identity rotation, nftables firewall, Guardian modules, and a multi-provider AI agent.

Emuji project image

Emuji

React to Spotify tracks with emojis and discover playlists based on collective vibes.

Virgil project image

Virgil

An open-source Android safety guardian: on-device fall detection and check-in alerts, no cloud or wearable required. In development, Play Store mid-2026.

SoulRadio project image

SoulRadio

An ambient Android radio with a 24-hour Solfeggio loop, a 9-tap dial, and a deeper Radio surface for the wider field. In active development.

Bios project image

Bios

An on-device health guardian: aggregates phone and wearable signals, detects drift from your personal baseline, alerts before symptoms surface. In development.

Fil project image

Fil

An MS companion for relapse early-detection - passive signals plus 30-second daily micro-tests, all on-device. v0.3.0, in active development.

About Me

About

I design and build the technical backbone of products - backend architecture, AI integration, infrastructure. I've set up campuses with 400 machines, built price transparency platforms, and architected marketplace systems from zero to production.

I studied philosophy at the Sorbonne before training as an engineer at 42 Paris. That combination shapes every architecture decision I make - especially around AI, privacy, and autonomy.

I work best at the early stage of projects, when the decisions that will matter most haven't been made yet. If you're integrating AI into a product and want someone who thinks beyond the API call, let's talk.

Timeline

PreuJust logo

Founder & Lead Engineer

PreuJust · Barcelona, Catalonia, Spain

Jan 2026 → Today

Experience
  • Founded price transparency platform for Catalunya
  • Designed and built data collection system for supermarket prices
  • Developed comparison engine and REST API in Go
  • Implemented web frontend in Vue.js and Android app in Kotlin
  • Built real-time price aggregation with barcode scanning and store mapping

AI Systems Research — Autonomy, Ethics & Architecture

Independent Research

Nov 2025 → Today

Experience
  • Researching the architectural and ethical implications of autonomous AI agents — how agency, safety, and alignment shape system design
  • Hands-on R&D with agentic workflows (Claude, OpenClaw, Cursor) — building methodology for teams integrating AI into production systems
  • Published guides on AI agent management, regression prevention, and responsible open-source AI adoption
Altan logo

AI Architecture Advisor

Altan · Barcelona, Catalonia, Spain

Nov 2025 → Dec 2025

Experience
  • Advised on AI system architecture for product integration — evaluated build vs. buy, model selection, and data pipeline design
  • Defined technical strategy for AI-powered features with focus on scalability and regulatory readiness
SmartWay VP logo

Solutions Architect

SmartWay VP · Barcelona, Catalonia, Spain

Jun 2025 → Nov 2025

Experience
  • Designed solution architecture bridging product requirements and technical constraints across backend, infrastructure, and data layers
  • Drove architecture decisions for scalability and maintainability in a growing product with Vue.js frontend and Go backend
Adevinta logo

Senior Golang Developer — Leboncoin

Adevinta · Barcelona, Catalonia, Spain

Apr 2025 → Jul 2025

Experience
  • Built and maintained Go backend services for Leboncoin's marketplace platform — high-traffic, high-availability distributed systems
  • Worked on service architecture, API design, and reliability engineering within a large-scale microservices ecosystem
Bount.ing logo

Founder & Lead Engineer

Bount.ing · Barcelona, Spain

May 2024 → Jun 2025

Experience
  • Identified marketplace problem and designed solution for open-source project funding
  • Designed and built core backend architecture in Go
  • Implemented payment flows and trust systems for marketplace transactions
  • Built frontend in Vue.js with TypeScript
  • Developed fraud prevention mechanisms and audit trails
  • Handled administrative and legal paperwork for company formation
Cannactiva logo

Solutions Architect

Cannactiva · Barcelona, Catalonia, Spain

May 2024 → Sep 2024

Experience
  • Architected technical solutions for a regulated industry — navigating compliance constraints while delivering a scalable product
  • Designed systems integrating Odoo ERP with custom e-commerce and inventory workflows
42 Barcelona Fundació Telefònica logo

Technical and Pedagogical Manager

42 Barcelona Fundació Telefònica · Barcelona, Catalonia, Spain

Sep 2021 → May 2023

Experience
  • Designed and implemented solutions to improve campus operations
  • Managed IT and pedagogical systems for campus activities
  • Developed and maintained community tools to support student collaboration
  • Led the setup of two campus facilities, including physical server configuration (6 servers, 400 computers)
  • Supervised and coordinated a team of 2 to 5 members
42, Paris logo

Technical & Pedagogical Assistant

42, Paris · Paris, France

Dec 2020 → Mar 2021

Experience
  • Conducted technical and pedagogical interventions to support student progress
  • Monitored students' administrative and pedagogical activities
  • Performed software maintenance and development for internal systems
  • Maintained hardware clusters, ensuring optimal performance
  • Handled access control management and inventory tracking
42, Paris logo

Volunteer & IT Intern

42, Paris · Paris, France

Nov 2019 → Dec 2020

Experience
  • Provided administrative, pedagogical, and technical helpdesk support
  • Assisted with software development and maintenance tasks
  • Ensured hardware cluster maintenance to sustain operational efficiency
  • Managed access control systems and inventory databases
42, Paris logo

Architecte en technologie du numérique

42, Paris

Nov 2018 → Aug 2021

Education
  • C Programming - System-level programming and memory management
  • Algorithm Development - Solving complex computational problems
  • UNIX System Management - Process management and file system navigation
  • Network Architecture - Network protocols and client-server models
  • System Administration - Managing and configuring servers and networked systems
  • Object-Oriented Programming - Modular and maintainable codebases
Panthéon-Sorbonne, Paris logo

Philosophy

Panthéon-Sorbonne, Paris

Sep 2017 → Jun 2019

Education
  • Logic - Formal reasoning and argument analysis
  • Ethics - Moral theories and their applications
  • Metaphysics - Nature of reality, existence, and mind-matter relationship
  • Epistemology - Nature and scope of knowledge, belief, and justification
  • History of Philosophy - Evolution of philosophical thought
  • Aesthetics - Philosophy of art, beauty, and perception
  • Sociology - Societal structures, cultural dynamics, and human behavior

Technical Skills

Languages

French (Native)English (Fluent)Spanish (Fluent)

Programming Languages

UNIX ShellHTML/CSSCPythonGoVue.jsPHP/Symfony

Tools & Technologies

GitDockerAnsibleLinuxLLM IntegrationsChatbotsOpenClawClaudeCursorAutonomous agents