# Gustavo Guerreiro

Gustavo Guerreiro is a remote worker on Himalayas, Backend Developer at Real Segurança, based in Brazil.

Source: https://himalayas.app/@gustavoguerreiro

```text
Backend engineer at Tegge building data ingestion pipelines and integrations that raised conversion by 103.7%.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Brazil |
| Authorized to work in | Brazil |
| Salary expectations | 199k+ BRL |
| Job categories | Backend Engineer, Data Scientist, Technical Consultant, Head Of Commercial |
| Skills | Backend Development, Python, Data Ingestion, Data Migration, Integration, Webhooks, REST, Deduplication, Incremental Syncs, Data Modeling, PostgreSQL, fastAPI, SQLAlchemy, TypeScript, React |
| GitHub | https://github.com/gustavoguerreiro |

## About

```text
At Tegge, I built a near-real-time data ingestion pipeline with XML parsing, normalization, deduplication, and enrichment, alongside partner webhooks and a configurable outbound rules engine. Iterative improvements to filtering, data treatment, and presentation raised conversion by 103.7% and closed deals by 166.7% on a strategic product line.

For Real Segurança, I built a notification service integrating WhatsApp Cloud API, Twilio SMS, email, and Telegram; its automated WhatsApp flow cut resident complaints by about 80%. I’ve also shipped production RAG systems and AssessorIA at NewGate, and built data pipelines and backend services across fintech, business intelligence, and wind energy.
```

## Experience

### Backend Developer (current)

Real Segurança. Jan 2025 - Present

```text
Built a standalone notification service integrating WhatsApp Cloud API, Twilio SMS, email, and Telegram, with Redis-backed message state and scheduled jobs. Designed three coordinated services connecting the platform to physical hardware with automatic reconnection and reliable delivery.
```

Skills: fastAPI, WhatsApp-Cloud-API, Twilio, Email, Telegram, Redis, PostgreSQL, MQTT, Docker-Compose

### Backend Developer (current)

Sigafy. Jan 2024 - Present

```text
Built a scheduled, containerized pipeline syncing contract data with incremental updates and backfilled ~20,500 historical records after tracing a silent parsing failure. Delivered an automated reporting system that cut manual reporting time by about 65%.
```

Skills: Python, Docker, Data-Pipelines, Incremental-Syncs, Data-Backfilling, Report-Automation

### Co-founder & Head of Commercial (current)

NewGate. Jan 2023 - Present

```text
Built and shipped production RAG systems and AssessorIA, an LLM-based document platform with FastAPI/PostgreSQL backend and React clients. Delivered a patient-distribution system for a large Brazilian healthcare network under LGPD-aligned practices.
```

Skills: RAG, LLM, fastAPI, PostgreSQL, React, React-Native, LGPD

### Backend Developer & Technical Consultant (current)

Tegge. Jan 2023 - Present

```text
Built a near-real-time ingestion pipeline polling an external API every minute, with XML parsing, normalization, deduplication, and third-party data enrichment. Built inbound and outbound webhooks with commercial partners and credit providers, plus a configurable outbound rules engine and WhatsApp dispatch routes.
```

Skills: Python, XML, Webhooks, REST, PostgreSQL, Redis, WhatsApp-Cloud-API, Rules-Engine, Data-Enrichment

### Data Scientist / Backend Developer

Delfos Intelligent Maintenance. Feb 2022 - Dec 2023

```text
Owned the backend layer of AI-based optimization solutions for wind power plants, with long-running data workflows orchestrated in Airflow and Dagster.
```

Skills: fastAPI, PostgreSQL, SQLAlchemy, Airflow, Dagster, Data-Workflows

## Education

### Universidade Federal do Rio Grande do Norte

Bachelor of Science, Electrical Engineering. 2016 - 2020

```text
B.Sc. in Electrical Engineering from UFRN, completed in 2020.
```

### Cesar School

Postgraduate degree, Technology Leadership

```text
Postgraduate degree in Technology Leadership from Cesar School.
```

## Tech stack

- DigitalOcean
- React Native
- MySQL
- PostgreSQL
- Redis
- React
- Python
- MQTT
- FastAPI
- SQLAlchemy
- TypeScript
- Git
- Docker
- Airflow
- Dagster
- Resend
- Claude Code
- AWS

To contact Gustavo, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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