# Ariel Zimbrão — Senior Backend Engineer, Tech Lead & Freelance Developer

> Ariel Zimbrão (also Ariel Aquila Zimbrão) is a Tech Leader and Senior Backend
> Engineer based in Lisbon, Portugal, with 8+ years of experience. He builds
> scalable APIs, microservices and event-driven architectures in Node.js, NestJS
> and Python, leads and mentors engineering teams, and is available for freelance
> projects (websites, web systems and APIs). Works in Portuguese and English,
> remotely with clients in Portugal, Europe and Brazil.
> Portuguese terms: desenvolvedor freelancer, programador freelance, criação de
> sites, desenvolvimento de sistemas sob medida, líder técnico, gestão de equipas.

## Availability

- **Freelance**: available for custom websites, landing pages, web systems and APIs. Request a quote via email, WhatsApp or LinkedIn.
- **Full-time / leadership**: open to technical leadership roles (staff/lead) and architecture challenges.
- **Remote**: yes — clients in Portugal, Europe and Brazil.
- **Languages**: Portuguese (native), English (professional).
- **Location**: Lisbon, Portugal.

## Technical skills

- **Backend**: Node.js, NestJS, Python, Django, Microservices, Event-Driven Architecture, REST APIs, GraphQL, WebSockets, MQTT.
- **Data**: PostgreSQL, MongoDB, Redis, Elasticsearch.
- **Infra & DevOps**: AWS, Docker, CI/CD.
- **Architecture**: scalable, high-volume systems and complex third-party integrations.

## Leadership & management

- Acts as Tech Leader: drives architecture decisions and team quality standards.
- Experience as Scrum Master; mentors developers and helps teams design systems that last.
- Strategic, collaborative and business-oriented: understands the business before proposing the technical solution.

## Freelance services

- Websites & landing pages — fast, responsive, built to convert.
- Web systems & APIs — custom dashboards and REST/GraphQL APIs with Node.js, NestJS or Python.
- Architecture & scale — microservices, messaging and event-driven systems.
- Integrations & automation — third-party services, payment gateways, MQTT, workflow automation.

## Proprietary software

- **Oliva** (https://oliva.church/) — church management platform (members, groups, events, finances, communication). Live.
- **Manda** (https://manda.pt/) — delivery platform for restaurants in Portugal managing their own couriers. In progress.

## Experience highlights

- **Decskill** (since 2026) — Tech Leader & Senior Backend Engineer (Node.js/NestJS).
- **Habit / Findmore** (2024–2026) — Senior Backend Developer (Python, Node-RED, integrations).
- **Aubay · NOWO** (2022–2024) — Senior Full-Stack Developer, telecom CRM and customer area, high volume.
- **Bitshopp** (2020–2022) — Backend Developer, blockchain-based fintech.
- Earlier: BRF (data platform), A4PM (healthtech), MV (diagnostic medicine, Scrum Master), Alterdata (where it started).

## Contact

- Email: aquilazimbrao@hotmail.com
- WhatsApp: +351 937 820 986
- LinkedIn: https://www.linkedin.com/in/arielzimbrao/
- Website (Portuguese): https://dev.arielzimbrao.com
- Website (English): https://dev.arielzimbrao.com/en