Théophile Delmas

I help founders transform an idea into a system that actually works.

I work in an integrated way on architecture and implementation of critical parts, to clarify key technical decisions and avoid costly mistakes later.

Projects

Selected work and collaborations

Bount.ing project image

Bount.ing

Marketplace idea needed payments and trust systems. I designed and built the core backend architecture and payment flows.

Preujust.cat project image

Preujust.cat

Price transparency problem across Catalunya. I built the data collection system and comparison engine that makes prices visible.

42 Barcelona project image

42 Barcelona

Education program needed better operations. I designed and implemented systems to manage campus activities and student collaboration.

Rooster project image

Rooster

Alarm clock idea tied to sun position. I implemented the core timing system and sun course calculations.

Smojify project image

Smojify

Playlist discovery idea using emojis. I built the Spotify integration and emoji-based matching system.

About Me

About

I work with founders who have an idea but need help turning it into a real system. When the product vision exists but the technical shape is unclear, that's where I'm most useful.

I work hands-on in the code. I help shape ideas into systems, design the structure, and implement the first critical backend systems. I make early technical decisions explicit and help you understand the tradeoffs.

I care about early decisions and boundaries between services. I choose appropriate technologies and help you avoid mistakes that become costly later. My judgment comes from building systems that handle real users and real transactions.

Timeline

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 Architecture Advisor

Altan · Barcelona, Catalonia, Spain

Nov 2025 → Dec 2025

Experience

Solutions Architect

SmartWay VP · Barcelona, Catalonia, Spain

Jun 2025 → Nov 2025

Experience

Senior Golang developer @Leboncoin

Adevinta · Barcelona, Catalonia, Spain

Apr 2025 → Jul 2025

Experience

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

Solutions Architect

Cannactiva · Barcelona, Catalonia, Spain

May 2024 → Sep 2024

Experience

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

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

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

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

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 IntegrationsChatbots