Gabriel Collignon
CTO as a Service | Product Engineering
Salary / Daily rate
Paris, France
Freelance
Skills
Languages
About me
Intro
Fractional CTPO & startup advisor with 6+ years leading tech, product, and organizational transformations across Energy, FinTech, and PropTech. Specialized in technical due diligence, interim leadership, and software R&D for scaling startups. I help founders build resilient tech organizations and ship products that drive growth through strategic audits and hands-on execution.
Work experience
Partner
Stealth
Mar 2025 - Present
1 year 8 months
Building 🌱 |🧍| 🤖
Fractal Continuity
Oct 2018 - Present
8 years 1 month
Région de Paris, France
CEO & founder
Oct 2018 - Present
8 years 1 month
Région de Paris, France
Fractional CTPO | VP of Engineering | Startup advisor Main services: — Tech, Product, and Organizational audit and due diligence — Fractional Chief Technology and Product Officer — Interim Chief Technology and Product Officer — Software R&D and innovation
Stealth Energy Startup - Product Engineering - Energy Infrastructure
Nov 2024 - Mar 2025
5 months
A startup that helps to assess clean energy infrastructure location, sizing and financial forecast (PV, grid, storage).
Lite Eco - CTO Advisory - Energy
Aug 2024 - Mar 2025
8 months
An Energy company that predicts and optimises multi-site business consumption using remote data analysis
Mercateam - Security Audit - Industry 4.0
Nov 2024 - Mar 2025
5 months
An Industry 4.0 company that provides workers training and optimises shifts on the factory floor using AI
Stealth Series A Startup - Tech and Product audit - Mobility
May 2024 - Jul 2024
3 months
On-site
Mobility company for EV Fleet planning, routing, and management
Stealth Company - Fractional CTPO - PropTech
Jul 2022 - May 2023
11 months
Paris, France
A PropTech company that creates a data platform for real estate agents
Blockpulse - Interim CTO - FinTech/LegalTech
Aug 2022 - Dec 2022
5 months
Paris, France
Blockpulse is a FinTech/LegalTech startup that enables digital cap table operations. Blockpulse's latest product simplifies Special Purpose Vehicle creation and management. https://www.blockpulse.eu/
Modjo.AI - Technical Advisory and R&D - AI powered SaaS
Jun 2022 - Jul 2022
2 months
Paris, France
Modjo is a SaaS startup that creates an AI-powered Sales Performance Management Software.
Dashblock - Product development - Developer Tools
Jun 2019 - Oct 2019
5 months
Los Altos, CA, USA
Dashblock was a platform that turns any website into an API through AI. During this mission, Gab teamed with the incredible Dashblock founders to improve the product, going from prototype to MVP. In a competitive environment, they managed to ship a first version of the product, leading to a successful Product Hunt launch (Dashblock ended up on 1st position), and first paying customers.
Pomelolo - Product development - FemTech
Feb 2019 - May 2019
4 months
Paris, France
Pomelolo was a platform that helps women to find the bra adapted to their morphology. Pomelolo held exclusive fitting events that bring customers to measure their true size and match the perfect bra model and style, thanks to modelists. During its collaboration with Pomelolo, Gab brought its product experience into creating the Pomelolo platform.
Chief Technology Officer
SimplFreelance
Jul 2023 - Mar 2024
9 months
Simpl measures the positive impact of physical infrastructure assets (bridge, tunnels, railways) by enabling the collection, consolidation, and analysis of ESG data. It permits to benchmark against similar assets types, and verifies the alignment against financial regulations (SFDR, CSRD, EU Taxonomy). I joined Simpl. as a founding CT(P)O, leveraging my experience to build the product and organisation with the CEO.
Chief Technology Officer
Skilleos
Feb 2020 - Mar 2022
2 years 2 months
Skilleos is a French-speaking edTech platform, with hundreds of experts and thousands of courses available online. It encountered an outstanding growth and lived through scaling challenges during the early stages of the global pandemic.
Chief Technology Officer
Hardware Club
Mar 2016 - Oct 2018
2 years 8 months
Région de Paris, France
Hardware Club is a community-based venture firm dedicated to full-stack companies. Hardware Club runs a fund that invests in early-stage full-stack companies building hard technologies and gathers the best hardware companies worldwide in an exclusive community of 450+ hardware companies across 35+ countries.
CTO & founder
Bucket Movie
Feb 2014 - May 2016
2 years 4 months
BucketMovie is an AI powered social recommendation app that allows you to find the next film to watch. Its unique algorithm based on graph DB and ML techologies matches one's taste perfectly, avoiding common clustering effects usually seen in traditional collaborative filtering models.
Maintenance Provisioning Services Manager
Airbus Group
Feb 2014 - Mar 2014
2 months
Région de Hambourg, Allemagne
Airbus maintenance provisioning optimises maintenance costs by modeling spare parts, expendables, consumables demand and by providing recommendation lists to aircraft maintenance operators.
Database Engineer
Tite Live
May 2012 - May 2013
1 year 1 month
Région de Paris, France
Tite Live is the European leader of book store management software and services. Tite Live achieves statistical media sales estimation and prediction in real time.
Education
University of Staffordshire
MSc, Computer Science
ECE. Ecole d'ingénieurs. Engineering School.
Ingénieur, Systèmes d'Information
Concordia University
Engineering and Computer Science
Universidad Peruana de Ciencias Aplicadas
Ingeniería de sistemas
Stanford University
Machine Learning
Licenses & certifications
Neo4j Certified Professional
Issued: Nov 2025
Apprentissage automatique
Issued: Feb 2016