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Jérôme GrondinJG

Jérôme Grondin

Supermalter

Fractional CTO, AI Expert, Startup Tech Advisor

€1,800/day
14 projects
Nantes, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jérôme

With over 20 years of experience in media (INA, RTL) 📺 and startups 🚀 (Swile, Chauffeur-Privé, Touch And Play), I adapt to your needs to support your (hyper) growth 📈 and scale your tech 👨‍🔧.

Here are a few examples of achievements in the last 5 years:

🧠 AI Lead Engineer
Tech lead of full agentic AI applications for major clients (L'Oréal) for the US market.

🥷 CTO as a Service
At your startup's launch, while you recruit your own, during a shift/transition phase, etc..

✍️ Software Architecture
Migration from a monolith to a microservices architecture, reduction of technical debt..

🏔 Defining and implementing a technical vision
Supporting your CTO to define and implement a tech vision consistent with your business needs

💆‍♂️ Scrum Master
Scaling Agile practices (+100 people) and coaching teams

🦸‍♂️ Coaching your managers / directors / CTOs
In case of reorg, pivot, fundraising, strong growth, opening a new market..

🛡 Quality First
Implementing an effective and non-blocking quality process, UI tests, end-to-end tests

👨‍🎤 Talent Acquisition
Implementing a recruitment process to accelerate your growth, coaching your tech teams to conduct interviews, implementing a career path, etc...
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Nantes (up to 50km)

Experience

  • Swile
    Engineering Director - Swile App & Benefits
    BANKING AND INSURANCE
    November 2020 - December 2021 (1 year and 1 month)
    Nantes, France
    Senior Engineering Director of 2 tribes (~40 people): Swile App & Swile Benefits

    - Managed managers (7 people, junior & senior)
    - Recruited managers and front/back developers
    - Defined and monitored the roadmap process
    - Monitored quality (QA, tech & business metrics)
    - Implemented Guilds (community of best practices)
    - Defined and implemented a career path
    - Established a tech steering committee

    Achievements:
    - Complete overhaul of customer company management (reduced debt, more open model to allow easy addition of new features/concepts) - 13K companies
    - Redesigned web & mobile app interfaces (500K users)
    - Complete customization of the Swile card (PIN code, color) in the app
    - Developed an employee benefits creation framework
    - Migrated microservices for the opening of a new country
    - Redesigned gift cards (x10 business YoY)
    - Recruited 20 people (devs and managers)
    Coaching Node.js Ruby on Rails PostgreSQL Scrum Mobile Application Kubernetes
  • Kapten (ex Chauffeur-Privé)
    Engineering Director
    TRANSPORTATION
    September 2016 - November 2020 (4 years and 2 months)
    92300 Levallois-Perret, France
    During 4 years, as the Engineering Director of the Supply Tribe, I built multiple teams shipping the best user experience for our customers on iOS, Android, Web by challenging our organization and our processes, and focusing on how to deliver business value every day. My main missions :
    - Define the feature roadmap at short / mid term with the product team
    - Challenge the product team to deliver the best User eXperience
    - Engage the supply managers and help them growing in their day to day management
    - Automatize our dev / test / delivery process as much as possible
    - Document, review, test and test and test and release the code
    - Challenge the devs to use the gold standard of development
    - Manage and develop a team of software engineers with various seniority levels (progression path, training, hiring, etc)
    - Apply and share best practices across the engineering team and the company as a whole
    - ...and also develop on Node.js, Python, Kotlin Environment :
    - Extremely competitive business
    - Very challenging architecture
    - Technical excellence, quality is mandatory
    - Scrum at is best (Certified Scrum Master) Stack : Microservices, Node.js, Python, Django, Go, Swift, Kotlin, MongoDB, Postgres, AMQP, Kubernetes and other cool technologies to build our amazing apps.
  • TOUCHANDPLAY SAS
    Chief Technology Officer
    July 2013 - September 2016 (3 years and 2 months)
    Île-de-France, France
    - Daily management of the technical team
    - Architecture lead of the product (iOS / Android / WebApp)
    - Lead architect of the platform
    - Improve build workflow (CI, unit tests, functional tests)
    - Consulting for our chain restaurant clients
    - Technical cost optimization

Reviews

5.0

Out of 1 rating

B

Benjamin

Back Market

Reviewed on 1/5/2023

We worked several months with Jerome who has been instrumental in the successful launch of Back Market Pro (dedicated B2B platform). Jerome helped to structure and lead QA for launch, automatize catalog import and build APIs for partners to access our catalog and store. It was a complete 360° mission. We were blessed to have Jérôme on board and we wish we can work again in the future. Beyond his technical skills, Jérôme brings an easy going attitude, always constructive. A true pleasure to work with We can only strongly and warmly recommend Jerome for future missions

Recommendations

FU
TM
FU
+1
Former user and 3 other people have recommended Jérôme

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Education

  • Management / Project Management
    ITIN
    2005
    Management / Gestion de projet
  • IT Management BTS
    ECE
    2003
    BTS Informatique de Gestion

Certifications

Skill set

Categories