Designed by Martin Stoleru. Developed by Alinus Dumitrana

All Experiences

Project Lead & Software Engineer

Client Gatenor
Timeline Oct 2023 – May 2024

Gatenor is a software engineering and design consultancy. I split my time between leading the technical direction and writing code across two of their client projects. The challenge was figuring out how to turn LLM technology into something users could actually rely on, within a startup timeline.

Projects

Travel AI Assistant

An AI travel planner that generates personalized itineraries through conversation. I helped design the backend to use OpenAI function calling for dynamic responses — querying real data sources instead of just generating text.

Rookeyz

A job platform designed for young professionals with little to no experience, connecting them with companies that understand their situation. I worked across both backend (Spring Boot) and frontend (React), helping shape the architecture and deliver features.

Key Contributions

  • Travel AI Assistant — helped take the product from idea to production in about 6 months
  • Function calling integration — worked on patterns where the AI could query real data, check availability, and build itineraries dynamically
  • Technical coordination — helped make architecture decisions and kept the small team aligned on priorities

Technical Stack

  • Languages: Java, TypeScript
  • Backend: Spring Boot, Node.js, Nest.js
  • Frontend: React
  • AI: OpenAI APIs, LLMs, function calling
  • Cloud: AWS
  • Databases: MySQL

Written by

Alinus Dumitrana

Other Jobs

Learn more about my experience.

SysWeb Company

Software Engineer

Owned the frontend for a government internal management platform — built it from scratch with React and TypeScript, working directly with the design and backend teams.

Read more
YLD

Software Engineer

Returned to YLD to work on a UK fintech client — migrated pages from Angular to Next.js in a multi-brand, multi-tenant architecture, and contributed to a Node.js GraphQL BFF.

Read more