Backend Developer / Software Engineer

Open to opportunities

Davi Baratto.

I build backend systems,
APIs and data-driven applications.

Focused on Node.js, TypeScript, NestJS and PostgreSQL. I enjoy building reliable APIs, integrations and software systems with clear architecture and maintainable code.

View my work GitHub LinkedIn

Node.js / TypeScript / NestJS / PostgreSQL

Explore selected work

01 / SELECTED WORK

Built with purpose.

Personal projects.
Real engineering problems.

01 / FLAGSHIP PROJECT

ComicVault

Your library. Your server. Your stories.

A self-hosted comic library and reader focused on ownership, organization and a modern reading experience. Extends and heavily customizes the Kavita ecosystem, with remote libraries and mobile usability in mind.

ASP.NET Core
.NET
Angular
Entity Framework Core
SQLite
JWT
Docker

ComicVault home with reading progress, recently added comics and series

PERSONAL OWNERSHIP. SELF-HOSTED BY DESIGN.DESIGN & DEVELOPMENT

IMAGE → INTELLIGENCE → DATA01—06

Card image

AI recognition

{ }

Structured result

NestJS APIPrismaPostgreSQL

CONCEPTUAL DATA FLOW

02 / AI & structured data

Pokelist

From card image to structured data.

A backend service combining structured Pokémon TCG data with AI-assisted card recognition.

NestJS
TypeScript
PostgreSQL
Prisma
REST API
JWT
Generative AI

SPATIAL RELATIONSHIPSPOSTGIS

POINT (x, y)search radiusx →y ↑

ST_DWithin(geom, point, radius)CONCEPTUAL QUERY

03 / Geospatial engineering

Meepple

Putting location into context.

An application exploring location-based data and geospatial modeling with PostgreSQL and PostGIS.

PostgreSQL
PostGIS
Geospatial data
Backend development

04 / Backend engineering challenge

Rinha de Backend 2026

Architecture under pressure.

A backend engineering challenge focused on architecture, performance, scalability and processing large vector datasets.

C#
Docker
Data processing
Vector records

SERVICE TOPOLOGYC# / DOCKER

CLIENT

LOAD BALANCER

API INSTANCE A

API INSTANCE B

DATA LAYER VECTOR RECORDS

CONCEPTUAL ARCHITECTURE

02 / EXPERIENCE

Where I contribute.

Building, collaborating, learning.

2025 — Present

INOVATEC-JP

Backend Developer

Building and maintaining backend APIs and services using Node.js, TypeScript, NestJS and PostgreSQL. Working with business rules, data modeling, authentication and authorization, validation, integrations, file handling and API documentation.

Node.js
TypeScript
NestJS
Express
PostgreSQL
Prisma
JWT
RBAC
Zod
Swagger / OpenAPI
Docker
MinIO / S3

2024 — Present

SAIL

Software Development / Research

Software development in an academic research environment, including data pipelines and services used to expose machine-learning predictions.

03 / ABOUT

Beyond the endpoints.

I’m a Computer Science student at UFPB and a backend developer based in Brazil, approaching the end of my degree.

Most of my work revolves around APIs, data modeling, integrations and backend architecture. I primarily work with Node.js and TypeScript, while personal projects have taken me into .NET, Angular, geospatial databases and applied AI.

I enjoy understanding how systems behave beyond individual endpoints — architecture, deployment, data flow and the trade-offs that make software maintainable.

The tools behind the work.

TECHNOLOGY

Backend

Node.js
TypeScript
NestJS
Express
ASP.NET Core
REST APIs

Data

PostgreSQL
Prisma
PostGIS
SQLite
MongoDB

Infrastructure & architecture

Docker
JWT
RBAC
MinIO / S3
Webhooks
Swagger / OpenAPI
Git
GitHub

Frontend & other

Angular
React
Next.js
Tailwind CSS

Engineering

SOLID
Clean Code
Design Patterns

EDUCATION

Universidade Federal da Paraíba — UFPB

Computer Science

Brazil

04 / GET IN TOUCH

Want to talk about
backend engineering?

I’m open to Backend Developer and Software Engineer
opportunities, especially remote roles.

Email LinkedIn GitHub Résumé (EN)