Back home
JarnDev

José Alfredo Ribeiro Neto

Software Engineer

Bahia, Brazil

Senior backend and full-stack engineer, 7+ years building for North-American startups — from computer-vision detection systems to LLM pipelines. Mechatronics roots, backend instincts: I ship systems that stay up and stay observable.

01

Experience

Axis Worldwide Inc

Senior Fullstack Engineer

New York, USA

Reducing the complexity of tracking important events, regulations and actors for strategic decisions.

  • Trained LLMs and integrated them across the product pipeline
  • Built the first version of the app's graph network viewer; migrated legacy data to Neo4j
  • Improved DB performance by tuning queries and the data schema
  • React
  • Python
  • OpenAI
  • Embeddings
  • Node.js
  • Neo4j
  • PostgreSQL
  • Redis
  • Kubernetes

Hugo → Calendly

Senior Backend Engineer

Hugo acquired by Calendly · California, USA

Hugo consolidates a meeting's key features — notes, tasks and 20+ integrations — in one place; the team was acquired by Calendly, where I kept building.

  • Real-time collaboration with Yjs; AWS auto-scaling via CloudFormation
  • Changed a key part of the algorithm to use tokenizers, improving performance 500×
  • Continued backend work on the scheduling platform after the Calendly acquisition
  • Node.js
  • React
  • TypeScript
  • Yjs
  • AWS
  • CloudFormation
  • Ruby on Rails

Suflex

Tech Lead / Fullstack Engineer

FoodCamp · Salvador, Brazil

Startup helping food companies thrive with organization and process control.

  • Migrated the FoodCamp backend from Elixir + REST to NestJS + GraphQL
  • Owned data modeling, tech choices and hosting; migrated infra to Kubernetes on AWS
  • Interviewed candidates and ran bi-weekly architecture reviews
  • Node.js
  • NestJS
  • GraphQL
  • Kubernetes
  • AWS

Earlier roles

  • Senior Python Backend Developer · AmbevTechSalvador, Brazil
  • Software Developer · Aton EngenhariasSalvador, Brazil
  • Fullstack Developer · AlamoWebSalvador, Brazil
  • QA Analyst · BRISA · LG MobileSalvador, Brazil
  • Assistant Researcher · University of Illinois at ChicagoChicago, USA
  • IT Technician · Wyden Area1Salvador, Brazil
02

Projects

Curated from GitHub — grouped by the thread that ties them together.

Vision, AI & robotics

Mechatronics is where I started, and perception keeps pulling me back — from computer vision to orchestrating local AI models.

  • ai-cli

    A unified CLI + TUI that orchestrates local image, video, voice, music and LLM models from one command, on a single GPU.

    • Python
    • Typer
    • Textual
    • LLMs
    • Diffusion
  • OurMall-Vision

    Hackathon project: a computer-vision filtering system integrated with a mobile app.

    • React Native
    • Computer Vision
    • Python
  • Robotics simulation

    Factory simulation driving servos with Arduino and modeling robotics physics.

    • Arduino
    • Robotics
    • C/C++

Products, shipped

Full applications taken from data model to a deployed, usable UI.

  • powerup

    Production-ready multi-tenant monorepo — a Next.js App Router front end and an Express + PostgreSQL API, with shared UI, types and validation packages.

    • Next.js
    • Express
    • PostgreSQL
    • Monorepo
  • Condomínio Dashboard

    Angular + Firebase dashboard to manage a small condominium — units, residents and finances.

    • Angular
    • Firebase
    • TypeScript
  • Farol Eleitoral

    Data app that turns Brazilian electoral datasets into a browsable, filterable dashboard.

    • Next.js
    • shadcn/ui
    • TypeScript
  • force-graph-lab

    Interactive force-directed graph explorer built on d3-force for probing relationships and layouts.

    • React
    • d3-force
    • Vite

Client work

Production sites shipped for real businesses through JarnDev — Astro + Tailwind, fast and static.

  • Lebre Tecnologia

    Institutional site for an IT & technology services company.

    • Astro
    • Tailwind CSS
  • Oficina do Clóvis

    Site for a Salvador auto shop — services, 24h towing and vehicle insurance.

    • Astro
    • Tailwind CSS
  • Roble Serviços

    Institutional site for a services company.

    • Astro
    • Tailwind CSS

Backend & tooling

Small, sharp services and the plumbing that keeps things running.

  • flowdeck

    Multi-repo gitflow visualizer — shows what's already in each stage, with cherry-pick detection by patch-id (not just SHA).

    • Node.js
    • Git
    • TUI
  • osint-docker

    Isolated, container-per-tool OSINT environment — each tool runs sandboxed, with no access to the host.

    • Docker
    • OSINT
    • Security
  • UptimeCheck

    Node.js service that pings endpoints on a schedule and reports downtime.

    • Node.js
    • Monitoring
    • REST
  • senseData

    Dockerized full-stack project wiring nginx, a React front end, a Flask API and Redis.

    • Docker
    • React
    • Flask
    • Redis

Foundations

Where I cut my teeth and still go to keep the fundamentals fresh.

  • VUTTR

    Very Useful Tools to Remember — a full MERN-stack app to catalog and search dev tools.

    • MongoDB
    • Express
    • React
    • Node.js
  • Market-Finder

    MEAN-stack app for storing market information and locations.

    • Angular
    • Node.js
    • MongoDB
    • TypeScript
  • cpp-game

    C++ games built with SFML while diving into game-development fundamentals.

    • C++
    • SFML
    • Game Dev
03

Technical skills

Backend
PythonNode.jsNestJSFastAPIGraphQLPostgreSQLRedisSQLNoSQL
Frontend
TypeScriptJavaScriptReactReact NativeAngularNext.js
AI / ML
LLMsOpenAIEmbeddingsComputer VisionDeep LearningNeo4j
Cloud / DevOps
AWSKubernetesDockerNetlifyFirebaseDatadog
Robotics & Embedded
C / C++ArduinoIoTROSGAZEBOVREPRVIZ
04

Education

  • B.Sc. in Mechatronics Engineering (suspended)

    Wyden Area 1

    2011

  • Exchange — Electrical Engineering (Mechatronics concentration)

    Tennessee Tech University

    2015 — 2016

05

Certificates

  • CAD 2D · Wyden Area 12012
  • CTFL Foundation · BSTQB2017
  • C Programming for Embedded Applications · LinkedIn2020
  • Scrum Foundation Professional Certificate · CertiProf2020
  • DataScience Acceleration · Codenation2020
06

Languages

  • English · Advanced
  • Portuguese · Native
  • Spanish · Basic