Orson Dessein

• - Assisting the CEO in the development of the project

• - Contributing to ideation and strategic brainstorming

• - Providing insights and recommendations

• - Supporting the execution and delivery process

As a member of the development team at Hellosafe, I am responsible for the design, development, and maintenance of dynamic and scalable web solutions. My role encompasses a range of technologies, from creating user-friendly WordPress websites to implementing sophisticated web applications using modern frameworks.

My expertise in PHP and Twig allows me to develop robust and efficient functionalities for our WordPress projects. I work on advanced customization of themes and plugins, ensuring our clients benefit from an exceptional user experience and seamless content management.

Additionally, I am involved in frontend development using Vue.js. This technology enables me to create interactive and responsive user interfaces, offering a modern and fluid user experience. By collaborating with our design and development teams, we create Vue.js web applications that meet our clients' specific needs.

In parallel, I am also invested in the development of Next.js web applications, where speed and performance are priorities. Using Next.js, we are able to deliver server-side rendered (SSR) or statically generated web applications that offer a fast and fluid user experience, while ensuring efficient content management.

My role as a FullStack developer at Hellosafe allows me to navigate with ease between backend and frontend technologies, ensuring our products meet the highest standards in terms of functionality, usability, and performance.

FullStack, Wordpress as CMS

Php, Twig, ViewJs, NextJs

CI/CD for data pipelines

Containerization with Docker

Automated deployment on cloud

Environment management (dev / staging / prod)

Data storage and management on Amazon S3 (data lake)

AWS data architecture implementation (S3, Glue, Lambda, EC2)

Pipeline orchestration with AWS Step Functions or Airflow

IAM permission management

Deployment of scalable and secure solutions

ETL script development in Python

Use of data libraries (pandas, numpy, requests, etc.)

API creation (FastAPI / Flask) to expose data services

Automation of tasks and data workflows

Writing clean, modular, and testable code

Design of RAG pipelines (ingestion, chunking, embedding, retrieval)

Integration of LLM models with search systems

Implementation of chunking and ranking strategies

Evaluation and improvement of response relevance

Management of documentary knowledge bases

Development of distributed data pipelines with PySpark on Databricks

Design and optimization of batch and streaming processing (Delta Lake, Structured Streaming)

Spark DataFrame manipulation (joins, aggregations, window functions)

Performance optimization (partitioning, caching, broadcast joins)

Databricks notebook management and industrialization via workflows

Implementation of Delta Tables with version management (Time Travel)

Monitoring and debugging of Spark jobs

Design of robust ETL/ELT pipelines

Data cleaning, transformation, and validation

Data quality management (data quality checks)

Integration of multiple sources (API, SQL/NoSQL databases, files)

Implementation of logs and monitoring