Harold Rajaonarison
Junior Data & Software Engineer | ML • Backend • Analytics
Salaire / Taux journalier
Bruxelles, Belgique
Freelance, ouvert au CDI
Expertises
À propos
Introduction
Junior Data & Software Engineer with a strong background in machine learning, backend development, and data analytics. I recently completed a Master's degree in Computer Science and have built multiple real-world projects at the intersection of data, AI, and scalable software systems. My experience includes designing end-to-end data pipelines, developing predictive and clustering models, and building production-grade backend services using Java Spring Boot, Python, SQL, and cloud-native tools. I enjoy transforming complex data into actionable insights and engineering robust systems that create measurable business value. Through projects such as customer segmentation using machine learning, large-scale data analysis and comparison, and AI-powered behavioral analytics applications, I have developed a strong problem-solving mindset and a deep interest in data-driven decision-making and digital transformation. I am particularly interested in graduate and junior roles combining data, artificial intelligence, software engineering, and cloud technologies, where I can continue learning, contribute to impactful projects, and grow into a versatile engineer in international environments.
Expérience de travail
Java Developer
FOD Financiën - SPF Finances
févr. 2025 - août 2025
7 mois
Bruxelles, Belgique
– Developed orchestration microservices using Java and Spring Boot in a large-scale enterprise environment. – Coordinated business rules and inter-service communication following hexagonal architecture principles. – Integrated DB2 databases and automated schema comparison and drift detection using Python. – Implemented unit and BDD tests (JUnit, Mockito, Cucumber) within an Agile Scrum team using GitLab CI/CD.
Fullstack Developer
IDMTEK
nov. 2023 - mars 2024
5 mois
Bruxelles, Belgique
– Developed backend functionalities and REST APIs. – Designed mobile user interfaces using Flutter. – Integrated external APIs and worked in Docker-based development environments
IT Technician
KETRIKA Hi-Tech
avr. 2021 - oct. 2022
1 an 7 mois
Toamasina, Madagascar
– Installed, configured and maintained Windows and Linux systems in professional environments. – Implemented IT asset management (GLPI), system monitoring (Nagios) and local network improvements. – Provided hands-on hardware, software and network support, ensuring system reliability and continuity.
IT Support
SPAT - Port Toamasina [Officiel]
sept. 2021 - déc. 2021
4 mois
Toamasina, Madagascar
– Set up and configured a Linux server for IT asset management and system monitoring. – Conducted local network analysis, identifying inefficiencies and implementing improvements. – Monitored system performance using Nagios to proactively detect and resolve potential issues before they affected operations. – Provided hands-on support for hardware and software troubleshooting, minimizing downtime for users.
IT Support
Ministry of Economy and Finance
nov. 2019 - janv. 2020
3 mois
Toamasina, Madagascar
– Configured and maintained a Windows server and implemented GLPI for asset management. – Developed a custom web application using CodeIgniter to improve inventory tracking. – Provided hands-on support for network and system troubleshooting.
Formation
ECOLE-IT
Master's degree, Computer Science
2022 - 2025
3 ans 2 mois
Institut Supérieur Polytechnique de Madagascar
Bachelor's degree, Electronics and Computer Systems
2016 - 2020
3 ans 11 mois