Freelancer profile translated to English.
Back to original languageAbout Rémi
Former CTO, I designed and operated a critical cloud infrastructure from scratch, handling €30M in revenue and serving 1 million users with a maintained SLI of 99.9%.
Today, as a freelance DevOps / Cloud Engineer, I work on infrastructure, automation, and reliability topics:
• Kubernetes, Helm, ArgoCD, Flux
• CI/CD: GitLab CI, GitHub Actions, Jenkins
• Cloud: GCP, AWS, Scaleway, Azure
• Monitoring: Prometheus, Grafana
• GitOps, IaC, continuous deployment pipelines
French
Native or bilingual
English
Fluent
Can work on-site
Toulouse (up to 50km)
Experience
- WitickCo-founder and CTOTRANSPORTATIONMarch 2017 - December 2025 (8 years and 9 months)Montauban, France
- Launched a digital ticketing solution across 4 urban transport networks, facilitating travel for over a million passengers.
- Prototyped and patented an innovative cross-platform Bluetooth Low Energy (BLE) validation system, deployed in a real-world environment in partnership with Thales and Keolis, allowing iOS and Android users to validate their tickets seamlessly.
- Deployed and managed a Kubernetes infrastructure on Scaleway bare metal servers, then migrated to GKE, maintaining an SLI of 99.9%.
- Implemented GitOps workflows with ArgoCD, enabling zero-downtime updates across all microservices.
- Monitored API performance with Prometheus and Grafana, maintaining a p99 latency below 250 ms and ensuring proactive incident response.
- Securely processed €30 million in revenue for transport networks, with robust financial and security controls.
- Maintained an average App Store rating of 4.8/5 from over 20,000 reviews, thanks to high reliability, careful UX quality, and rapid feature delivery.
- Recruited and managed the development team, planned sprints and product roadmap, and aligned technical objectives with business goals.
- iaraLead iOS DeveloperSOCIAL NETWORKSAugust 2024 - January 2025 (5 months)Development of the iara iOS application, a social network dedicated to beauty professionals and their clients.As a freelance lead iOS developer, I worked with the team on adding strategic new features, such as the content feed and a digital loyalty card. I also integrated the application's new graphic charter.Development in Swift and SwiftUI, with particular attention paid to performance optimization, which was significantly improved.
- YouTransactorLead iOS DeveloperMay 2020 - September 2020 (4 months)Development of an iOS SDK for Bluetooth Low Energy communication with a payment terminal (uCube Touch).As a freelance lead iOS developer, I designed and developed in Swift an SDK for third-party developers in the FinTech sector (online banks).This SDK allows pairing the payment terminal with the iPhone, as well as sending and receiving commands via Bluetooth using CoreBluetooth.Project carried out in collaboration with an Android developer and a project manager.
Reviews
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Account deleted
Reviewed on 10/19/2020
Context:
- Porting an Android SDK to iOS
- BLE connection to a payment terminal
- Connection to our MDM for firmware updates
- Implementation of card transaction logic
- Delivery of the framework via CocoaPods
Rémi masters iOS development and the use of CoreBluetooth. He was autonomous on this project and delivered quality work.
Good communication. Project transfer to our internal team and training of the team.
Very good initial estimate. The project was delivered on time, within budget.
H-Works
H-Works
Reviewed on 10/9/2019
The mission with Rémi went very well.
He is a competent developer with the experience and knowledge of the ecosystem to make the right technical choices.
He immediately used the right libraries to ensure the application's architecture was clean and understandable.
Communication via Slack was excellent.
Recommendations
FU
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Education
- Expert in Information Technology (Master's degree)EPITECH Paris2017
- International Student, Computer ScienceCalifornia State University, Long Beach2016
Certifications
- Expert in Information Technology (Master's degree)EPITECH2017