Adrian Helgiu

AI/ML • Eindhoven, Netherlands • UTC+01:00 • Work permits: Netherlands • Available now

Full Stack Developer

12+ years exp

JavaScript

Node JS

Python

TypeScript

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Overview

Technical skills

Timeline

Roles

Overview

Senior full stack developer with 11+ years building web platforms and enterprise systems for payment, auctions, and AI-enabled customer support. Recent work focuses on integrating GenAI/RAG and vector-search components using TypeScript, Node.js, React/Next.js, and Python. Also owns CI/CD, automated testing, and monitoring with Docker, GitHub Actions, Jest, Prometheus, and Grafana.

Phone

Technical skills

Languages

JavaScript

Node JS

Python

TypeScript

Frontend

React.js

Next.js

GraphQL

Tailwind CSS

Databases

PostgreSQL

Chroma

Pinecone

ElasticSearch

Redis

DevOps

Rest API

GitHub Actions

Docker

Grafana

Prometheus

CI/CD

Kubernetes

Other

Express

Jest

Mocha

React Native

LLM

TypeORM

Django

FastAPI

LangChain

Material UI

Redux

spaCy

SQLite

Git

Terraform

Vercel

Postman

Prisma

PostCSS

Nginx

Swagger

RAG

Embeddings

Prompt Engineering

Vector

Semantic Search

Timeline

Senior Full Stack Developer • Senior

NetGuru • Full-Time

Aug 2024 to Apr 2026 1 Year 8 Months Timișoara Partially remote

Led development of an AI-powered customer support chatbot using TypeScript, Node.js, React, and a vector database to improve response latency. Designed and implemented RAG workflows and an AI recommendation engine for a knowledge management and content platform. Built REST APIs, set up CI/CD with Docker, added automated tests, and implemented monitoring with Prometheus and Grafana for AI service health.

JavaScript

Node JS

React.js

Next.js

Pinecone

Chroma

GraphQL

Rest API

Express

CI/CD

Docker

GitHub Actions

Jest

Prometheus

Grafana

PostgreSQL

Senior Full Stack Developer • Senior

Catawiki • Full-Time

Feb 2022 to Jun 2024 2 Years 4 Months In office

Built a real-time auction bidding system with React, Node.js, and GraphQL for high-volume low-latency traffic. Implemented an AI-assisted item classification workflow using Python and integrated results into a Next.js frontend. Developed a React Native mobile bidding app, set up CI/CD with GitHub Actions and Docker, and improved backend performance using PostgreSQL.

React.js

Next.js

Node JS

GraphQL

Python

React Native

Docker

GitHub Actions

PostgreSQL

Full Stack Developer • Middle

Scurri • Full-Time

Feb 2019 to Nov 2021 2 Years 9 Months In office

Implemented delivery tracking features with React and Node.js to improve shipment visibility and customer outcomes. Enhanced backend APIs with Express and MongoDB, focusing on reducing data retrieval times. Collaborated with QA to write unit and integration tests with Jest and supported integration of third-party shipping services via REST APIs and OAuth flows.

React.js

Node JS

Express

Jest

Rest API

Software Developer • Middle

Adyen • Full-Time

Apr 2014 to Dec 2018 4 Years 8 Months In office

Developed payment processing modules using JavaScript, Node.js, and Express, supporting high transaction volumes with reliability. Optimized PostgreSQL queries and indexes to reduce average transaction lookup times. Implemented secure payment authentication using OAuth/JWT and improved code stability with unit and integration tests using Mocha and Chai.

JavaScript

Node JS

Express

PostgreSQL

Mocha

Eindhoven University of Technology

Bachelor's Degree • Computer Science

2009–2012 Eindhoven, Netherlands