Renaat D.

Senior Full Stack Developer

Freelance 2011 - Present

Versatile full-stack developer with 10+ years experience in JavaScript/HTML/CSS, React, Ruby, Ruby-on-Rails and Python. I bring a comprehensive understanding of multiple disciplines, making me a natural problem solver and adept at aligning diverse perspectives. Eager to tackle a wide array of technical and creative challenges, I thrive in dynamic environments.

Recent projects:

Full Stack Project

Solution to create a ‘live’ updating website to be shown on LCD screens on a fair booth. I managed the whole project, from ideation to execution.

Technical stack:

- React Frontend, hosted on Vercel

- NodeJS Backend, hosted on AWS EC2

- AWS Lambda

Specifics:

- Server-side Events

- Zapier Webhook / Google Drive

- Cloudflare DNS

AI Chatbot

Development of AI powered chatbot. The AI chatbot is fed by documents containing specific information, and can answer specific questions about those documents. The documents are tokenized and stored in a vector database.

Technical stack:

- Python & Flask

- Langchain

- PineCone Vector Database

- OpenAI ChatGPT API

- PythonAnywhere

Full Stack Project

Development of internal tooling for a data-cleaning project. The aim was to provide a highly automated front-end to assist the sales team to quickly review and amend customer data.

Technical stack:

- Ruby-on-Rails 7 + HotWire

- PostgreSQL

- Redis Cache

- Heroku

Middleware Development

Custom middleware between HubSpot API and Microsoft Dynamics Business Central. Ingesting data from API endpoints, tranforming and cleaning data to the HubSpot database. Set up CRON for nightly updates.

Ingestion of financial data from the National Bank to calculate EBIT/EBITDA/Gross Margin for data enrichment.

Technical stack:

- Python + Pandas/Numpy

- PythonAnywhere

Website Project

- Wireframe, Webdesign & Full-Stack Development

Technical stack:

- React hosted on Vercel

- Strapi CMS hosted on RailWay

- TailWind CSS

- GraphQL + Apollo Client