Freelancer profile translated to English.
Back to original languageAbout Gerben
Software engineer with over 7 years of experience, I specialize in the development of mobile applications and automation tools with high technical constraints: real-time, sensor streams, data processing, AI/ML integration, and performance optimization.
My background has led me to work on industrial, IoT, and data-driven projects where reliability and robustness are key challenges: business process automation tools, Python data processing pipelines, AI/ML algorithm integration, and field applications connected to physical sensors.
I design applications and tools:
- Adapted to the real business needs of field teams
- Capable of ingesting and processing continuous data streams
- Resilient to network and hardware issues
- User-friendly and accessible, even for non-technical users
Feel free to contact me, I would be happy to discuss your project with you.
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Areas of Expertise
Mobile & Performance
• Native Android (Kotlin), MVVM architectures
• Fine-grained management of threads, coroutines, flows
• CPU / memory / latency optimization
• Real-time and intensive use applications
• Backend development & API integration
Sensors, IoT & Real-time
• Bluetooth Low Energy (scan, connection, robustness, retry, timeout)
• Management of continuous data buffers
• Synchronization and export of field data
• Applications connected to sensors
Data Processing & AI
• Integration of embedded ML / AI algorithms
• Real-time image and camera stream processing
• Collaboration with data / research profiles
Field UX & Reliability
• Clear and user-friendly interfaces
• Offline / online management
• Applications tolerant to user errors
• Production stability
Degrees & Training
• DUT Informatique and Professional License in Software Engineering (mobile development specialization) – UCA
French
Native or bilingual
Dutch
Native or bilingual
English
Fluent
Can work on-site
Clermont-Ferrand (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km), Toulouse (up to 50km), Limoges (up to 50km)
Experience
- Agence OkapiDigitalization Consultant for VSEs/SMEs - AI, no-code & automationCONSULTING AND AUDITSDecember 2025 - Today (6 months)Tulle, FranceAgence Okapi assists VSEs and SMEs in digitizing their business processes. The goal: to free up time for managers through simple, reliable tools adapted to the realities on the ground.My approach begins with a diagnosis to identify daily friction points, then I propose prioritized solutions based on budget and impact.Services• Process automation with Make, n8n, Zapier, Airtable• Integration of AI tools: email sorting, OCR, document classification, Google Workspace• Setup and configuration of existing tools (invoicing, CRM, Notion, Glide)• Custom tool development: PWA, client portals, API integrations• Native mobile applications for more demanding business needsRecent AchievementsMyGroom (Horse's Favorit Sarl)— No-code equestrian application (Glide, 2500+ horses, 2000+ users). Complete redesign of the multi-tier subscription model with Stripe integration (Payment Links, Customer Portal, webhooks), Make automations, paid in-app directory, Tally forms, Brevo notifications. Several successive missions on the functional evolution of the app (activities, health, care, budget, recurring events) and integration of the e-commerce site.SmartClean— React PWA for a cleaning company: task scheduling and field monitoring for intervention teams.Project-based pricing model for full cost visibility from the start.
- CIDECODevelopment of an Android IoT ApplicationCIVIL ENGINEERINGApril 2025 - November 2025 (7 months)Clermont-Ferrand, FranceDevelopment of an Android mobile app allowing CIDECO technicians to collect data from IoT sensors (fissure meters and inclinometers) installed on bridges and other structures.The developed features are:- Create and manage sensor groups- Add sensors by serial number or by Bluetooth LE scan- Initialize and configure a sensor- Perform sensor maintenance operations- Download sensor values via BLE- Visualize a trend of the latest values- Export sensor readings- Export/Import application configurationCIDECO needed a robust, stable, and resilient application.Another important aspect was to minimize contact with support by implementing a clear and streamlined user interface that is easy to understand and use, preventing misuse.The development of the application presented several challenges:- Resilience in sensor connection through best practices- Error handling (application and sensor errors)- Creating an optimal user experienceA Crashlytics dashboard was set up to monitor potential bugs during production and allow for quick fixes.Integration tests were implemented for critical parts.
- SmartLawTechDevelopment of Android & iOS Mobile ApplicationsLEGALOctober 2024 - March 2025 (5 months)Paris, France
- Development of a native Android mobile application with Jetpack Compose for creating and managing electronic debt acknowledgment documents
- Maintenance of the iOS version of the application
- Maintenance and development on a backend (NodeJS) consumed by the applications
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Education
- Professional License in Software Design, Development, and Testing – Mobile Platforms specializationUniversité Clermont Auvergne2019La licence professionnelle m'a permis d'approfondir mes compétences en informatique. J'ai consolidé mes savoirs en architecture logicielle, en programmation orientée objet, en bases de données, en systèmes et en réseaux à travers de multiples projets réalisés en travail d'équipe. La spécialisation dans le développement pour plateformes mobiles m’a amené à développer pour de nombreux types d’appareils mobiles à l’aide de plusieurs Frameworks différents (Android, iOS, Xamarin, Qt, Ionic). Je connais les contraintes liées au développement pour plateformes mobiles. L’utilisation de plus d'une dizaine de langages de programmation et Frameworks me permet de prendre du recul quant aux atouts et inconvénients de chaque langage par rapport aux différents besoins. Avec l'alternance, j'ai énormément appris sur les pratiques des entreprises, notamment les méthodologies de travail, les technologies utilisées, la planification et gestion de projet, mais aussi l’organisation interne.
- University Diploma in Technology in Computer ScienceUniversité Clermont Auvergne2018L'IUT Informatique m'a permis d'acquérir une solide culture informatique. Lors de cette période, j'ai développé mes capacités de raisonnement, ma rigueur, ainsi que mes compétences en communication. Projets notables : - Développement d’une application mobile permettant de scanner le code-barres d’un produit alimentaire pour avoir des informations sur celui-ci (Android, Java). - Application bureau de gestion de finances personnelles (JavaFX, Java 8). - Elaboration d’un lecteur de musique (UWP, C#).