Fabrizio Zaffarana
Backend Software Engineer

Technical

Node.js

TypeScript

Express.js

GraphQL

PostgreSQL

MySQL

MongoDB

Redis

Weaviate

Firebase

Supabase

Amazon Web Services

GCP

Serverless

Docker

Terraform

Prompt Engineering

LangGraph

LangChain

Experience

Backend Software Engineer, Rocket Lab, March 2025 - Present

Backend development for app growth and mobile optimization solutions
Development of data-driven advertising and app optimization tools

Backend Software Engineer, Smoot, May 2023 - March 2025

AWS management and cost reduction
NodeJS APIs development
Event driven serverless architectures design (AWS Lambda w/NodeJS)
Analytics and data pipelines development
Integration of artificial intelligence services, including OpenAI and Google Cloud AI
Implementation and management of vector databases, such as Weaviate, for advanced data retrieval and storage

Backend Software Engineer, Mixmax, February 2022 - May 2023

DX (Development Experience) - Led the development and improvement of tools and workflows to enhance the development process for cross-functional teams. Utilized agile methodologies to drive project timelines, collaborated with stakeholders to identify areas of improvement, and implemented solutions to streamline processes and increase efficiency
AWS management and cost reduction
NodeJS APIs development
Event driven serverless architectures design (AWS Lambda w/NodeJS)

Backend Software Engineer, Palabra, February 2021 - February 2022

Migrate a monolith to microservices (AWS)
SQL and noSQL databases management
Event driven serverless architectures design (AWS Lambda w/NodeJS)
AWS management and cost reduction

Backend Software Engineer, Pruvo, August 2020 - February 2021

Create integration services to connect the platform with different hotel suppliers
Serverless (AWS Lambda w/NodeJS) pipelines development

Backend Technical Lead, Backend Software Engineer, Worcket, January 2019 - August 2020

New features analysis and implementation
Serverless (AWS Lambda w/NodeJS) pipelines development
SQL and noSQL databases management
Team management

Backend Technical Lead, Backend Software Engineer, Headway Digital - Marketing powered by Technology, September 2017 - January 2019

Serverless (AWS Lambda w/NodeJS) pipelines development
SQL and noSQL databases management
High performance APIs design
Event driven serverless architectures design (AWS Lambda w/NodeJS)
Team management

Backend Technical Lead, Full-stack Developer, PlayTown S.A, January 2013 - September 2017

New features analysis and implementation
PHP and NodeJS APIs development
Development of custom solutions for all areas of the company
Design and development of mobile games/applications for Android and iOS platforms using Ionic Framework, React Native and Unity3D

IT Director, Sur Electricidad S.A, January 2010 - January 2013

Creation and migration of the new tracking system in a local network.

Education

System Analyst Degree, Instituto Tecnologico Beltran

Languages

Spanish, Native

English, Upper intermediate (B2)

Personal Projects

Lechuga App, https://lechuga.app

Historical values and price evolution query for different exchange rates in Argentina.

All The Tools, https://www.allthetools.online/

Free online tools for converting, formatting, and transforming data (JSON to CSV, Base64, JWT Decoder, etc.).

SiteSpy, https://rapidapi.com/fzaffarana/api/sitespy

A blazing-fast API that maps entire websites by extracting all URLs from sitemaps, RSS feeds, and hidden structures.

Smart Web Scraper, https://rapidapi.com/fzaffarana/api/smart-web-scraper

Extract readable content, metadata, and key SEO information from any public webpage in seconds.

Web Authority Score, https://rapidapi.com/fzaffarana/api/web-authority-score

Instantly calculate a 0–100 Web Authority Score for any site, based on real-time analysis of content coverage, freshness, quality, technical health, and SEO optimization.

Web Content Analyzer & Summarizer, https://rapidapi.com/fzaffarana/api/web-content-analyzer-summarizer