Neo
10+ Years Experience

Full Stack Engineer

Nywton Barros

"Crafting elegant software experiences that make life easier."

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Core Competencies

Full Stack Mastery

Expertise in Angular, React, Vue.js, Node.js, Ruby on Rails, and Elixir. Delivering resilient, end-to-end solutions.

Cloud Architecture

Building scalable APIs and robust backend systems using PostgreSQL, MongoDB, and secured AWS infrastructure.

Mobile & R&D

Developing cross-platform mobile apps (React Native) and driving innovation through scientific research and patents.

AI/LLM Mastery

Designing and integrating custom LLM solutions using tools and Retrieval-Augmented Generation (RAG) on proprietary company data.

Selected Projects

HealthTech & Telemedicine

Project Vetias

Developed Vetias, a specialized telemedicine platform for veterinarians. This SaaS tool enables remote case consultations, significantly improving clinical efficiency and successfully managing over 11,000 veterinary support tickets.

Tech Stack: Vue.js, Node.js, PostgreSQL, Socket.io

View Telemedicine Impact
Vetias Telemedicine App Dashboard
Doe+ Mobile App Screenshot
Social Impact & HealthTech

Doe+ Mobile Platform

Architected and developed a mobile platform for blood donation scheduling. This initiative significantly increased local blood bank capacity, making a direct positive social impact.

Tech Stack: Java (Android), PHP/MySQL

Read About the Impact

Professional Journey

Sep 2025 - Present

Senior Software Engineer @Jaya Tech

Senior Rails Engineer at Syngenta — migrated legacy Java microservices to Ruby on Rails within the Cropwise Unified Platform, reducing API latency by ~90%.

Tech: Ruby on Rails, React, AWS, Kubernetes, PostgreSQL, Redis

Nov 2024 - Oct 2025

Software Engineer @Banco do Brasil

Delivered GEFIS modules reducing IT service contracting lead time from 356 to 250 days, improving governance workflows at one of Latin America's largest financial institutions.

Tech: Angular, Java, PostgreSQL, REST APIs

Feb 2020 - Feb 2025

Principal Software Engineer @Intensivet Saúde Digital

Led architecture and full-stack delivery of healthcare systems over 5 years, driving modernization with Rails backends, Angular/React frontends, and microservices.

Tech: Ruby on Rails, Angular, React, Java, MongoDB, AWS

May 2023 - Sep 2024

Software Engineer @Vagas.com

Upgraded 90% of a legacy Rails platform with full test coverage and delivered AI-driven CV-to-job matching to improve candidate recommendation accuracy.

Tech: Ruby on Rails, AWS, React, PostgreSQL

Oct 2020 - Jun 2023

Software Engineer @Everlywell

Built backend services for a US healthtech platform scaling to 1M+ COVID test records/day, integrating payment gateways and healthcare data providers.

Tech: Ruby on Rails, Node.js, AWS, PostgreSQL

Nov 2019 - Oct 2020

Software Engineer @Hospital da Cidade

Developed a real-time bed management dashboard and EHR/ICU modules, reducing patient admission response time through structured, data-driven clinical workflows.

Tech: Java, Angular, PostgreSQL, Oracle DB

Oct 2018 - May 2019

Software Engineer @Clip

Led migration of a legacy codebase to a modern Rails backend with Angular, React, and Vue.js frontends — zero disruption to service availability throughout.

Tech: Ruby on Rails, Angular, React, Vue.js, Java, MongoDB

Sep 2018 - Nov 2018

Software Engineer @SESAU Alagoas

Delivered a public health campaign platform that boosted blood donation engagement by 47% in its first week, earning media recognition and patent-related outcomes.

Tech: Ruby on Rails, Linux

Jan 2017 - Mar 2018

Software Engineer @Roga Labs

Built a restaurant cost management platform and launched a promotion system with integrated Stripe/Pagar.me payments supporting end-to-end purchase flows.

Tech: Ruby on Rails, React, TypeScript, Stripe, PostgreSQL

Aug 2015 - Mar 2017

Systems Developer @SECTI Alagoas

Built internal portals and the DOE+ public health platform, contributing to a 47% rise in blood donation engagement and patent-generation outcomes.

Tech: Ruby on Rails, Linux

Dec 2014 - May 2015

Software Developer @CASAL

Developed internal demand systems and maintained physical/logical network infrastructure, including Windows and Linux server administration.

Tech: PHP, Java, Linux, Windows Server

Feb 2013 - May 2014

Operations Technician @Nastek

Installed and maintained Linux servers, integrated VHF radio/tracking systems with Ethernet networks, and provided user support and staff training.

Tech: Linux, Networking, VHF Integration

Measurable Impact

0 +

Years Experience

0

Software Patent

0 %

Solution Focus

Real-World Impact

Doe+

Public Health Platform

The Doe+ platform demonstrated how thoughtful technology architecture can yield immediate, measurable humanitarian results — increasing blood bank stocks by 47% in its first week after launch in 2015.

Featured

Doe+ Blood Donation Platform video thumbnail

Doe+ — Blood Donation Platform | Increased Hemobank Stocks by 47% after its 2015 launch

YouTube

www2.ifal.edu.br/noticias/aplicativo-doe-desenvolvido-no-ifal-maceio-ja-esta-disponivel-para-baixar

People Who Trust In Me

"The attention to detail and proactive communication was outstanding. Nywton not only met the brief but elevated the entire project with innovative solutions."
Avatar of Fábio Depiné

Fábio Depiné

IT Manager, Banco do Brasil

“Professional, highly responsive, and technically proficient. He streamlined a complex challenge and delivered a seamless experience.”
Avatar of Rodrigo Rabelo

Rodrigo Rabelo

Director, Intensivet

"A game-changer for our workflow. They brought clarity to a very messy situation and delivered solutions that was smart, clean and robust, ahead of schedule."
Avatar of Rafael Carvalho

Rafael Carvalho

Founder, Egtec