Looking for a job

Sebastião Relson Reis da Luz

@sebastiorelsonreisda

Message

I build cloud-native GenAI and high-scale financial systems.

Brazil

Message

What I'm looking for

I'm looking to solve complex architectural challenges through agile, fast-track development, especially where I can modernize legacy systems with cloud-native and AI-driven solutions.

At Grupo GFT, I build Proof of Concept features and custom integrations for Wynxx, a GenAI platform. I prototype LLM-agnostic tools with Google Vertex AI, Azure OpenAI, and AWS Bedrock.

I also engineer banking services for Safra’s SPI (PIX) instant-payment system, with a focus on high availability and low latency. For Itaú, I modernized risk-assessment tools with .NET, Python, and MySQL, improving resilience and data-processing speed.

Across insurance, logistics, workforce management, and retail, I’ve delivered systems using .NET Core, Azure, GKE, Docker, RabbitMQ, RavenDB, Java, and PostgreSQL. My work includes a private-label credit card system for fleet logistics and dental insurance management systems for SulAmérica.

I bring more than 20 years of experience connecting legacy platforms to modern cloud-native architectures. I enjoy solving complex architectural challenges through agile, fast-track development.

Experience

Work history, roles, and key accomplishments

Engenheiro de software sênior

Grupo GFT

Jul 2021 - Sep 2026 (5 years 2 months)

Acted as a specialized engineer in the Proof of Concept team, developing agile features and custom integrations. Engineered banking services for the SPI (PIX) instant payment system and led modernization of risk assessment tools.

Google Vertex AI Azure OpenAI AWS .NET Python MySQL GKE Docker

Engenheiro de software

Rede Frota

Nov 2020 - Jul 2021 (8 months)

Architected and developed a private label credit card system for the logistics sector. Implemented a robust stack with .NET Core, Azure, and Docker, managing complex transactions.

.NET Core Azure Docker

Analista de desenvolvimento de software

Ponto iD Technology

Mar 2017 - Nov 2020 (3 years 8 months)

Designed time and attendance systems for large-scale workforce and student management. Utilized RabbitMQ and RavenDB to handle high-concurrency data ingestion and real-time processing.

RabbitMQ RavenDB

Software Engineer

AW IDEA

Jan 2017 - Mar 2017 (2 months)

Prestashop administration, customization and integration using key technologies like PHP, MySQL, Apache and NGINX.

PHP MySQL Apache Nginx PrestaShop

Engenheiro de software

Companhia Brasileira de Startups

Dec 2016 - Jan 2017 (1 month)

FullStack Developer.

Arquiteto de Solução

Aser Security

Jun 2015 - Nov 2016 (1 year 5 months)

Development and maintenance of in-house applications for management of network assets and orchestration, using tools like ExtJS 4, Sencha Touch, Java, PHP, MySQL and PostgreSQL.

EXT4 Sencha Touch Java PHP MySQL PostgreSQL

Administrador de sistema

Interfile Full Service BPO

Jan 2015 - Sep 2015 (8 months)

DevOps.

Arquiteto de soluções

Salon Line Brasil (via Agenttia)

Jan 2015 - Jun 2015 (5 months)

Desenvolvimento de Solução para monitoramento de PDV.

Arquiteto de Software

Via Varejo (via Vorttex)

Aug 2014 - Nov 2014 (3 months)

Project CICS4WEB at Via Varejo of integration between lower (Mainframe) and high platform, using ExtJS as front-end including Architecture Definition, Process and Documentation.

EXT JS Mainframe

Arquiteto de Software

Medral

May 2013 - Aug 2014 (1 year 3 months)

Design and maintenance of GIS for Utility in Electric Energy Sector, using toolchain technology like Adobe Flex, Enterprise Architect, SOAP, .NET and SQLServer.

Adobe Flex Enterprise Architect SOAP .NET SQL Server

Programador

Aser Security

Jan 2011 - May 2013 (2 years 4 months)

Desenvolvimento de ferramentas internas para administração e suporte de infraestrutura de redes distribuídas.

EXT4 Sencha Touch jQuery Zend Framework PHP JavaSE JEE MySQL PostgreSQL

Programador

Systec - Tecnologia da Informação

Jan 2010 - Apr 2011 (1 year 3 months)

Manutenção de ERP com experiências nos Módulos de Planejamento de Compras, Crediário, PDV e Estoque utilizando VB6 e Postgres. Arquitetura e desenvolvimento de Software para gestão de cobranças e Teleserviços.

VB6 PostgreSQL Java Hibernate Spring Framework Adobe Flex

Programador

Soltec - Soluções Tecnológicas

Jun 2009 - Apr 2010 (10 months)

Programador de Sistemas GIS e aplicações de conversão de dados, coleta e levantamento de rede elétrica.

C# .NET .NET Compact Framework MapObjects Visual Basic 6 Oracle Spatial Pl SQL Oracle MS Access

Programador

Integra Tecnologia

Jan 2009 - Jan 2010 (1 year)

Desenvolvimento de Aplicativos de força de venda para dispositivos móveis e na web.

J2ME ASP.NET Web Forms

Programador

Condomais

Jan 2009 - Dec 2009 (11 months)

Developed and integrated software solutions for condominium delinquency management. Engineered complex T-SQL Stored Procedures for high-performance database operations.

.NET MS SQL Server T SQL

Programador

Politec - Global IT Services

Nov 2008 - Apr 2009 (5 months)

Developed and maintained a large-scale HR management system for the public sector. Implemented critical modules for payroll processing, personnel management, and organizational structure using ASP.NET and Oracle Database.

ASP.NET Oracle Database

Administrador de Redes

Universidade Federal do Tocantins

Oct 2004 - Feb 2005 (4 months)

Managed computing laboratories featuring disk-less terminals (LTSP). Provided Tier 2 hardware and software support and conducted workshops on OpenOffice.

LTSP Conectiva Linux OpenOffice

Web Developer & Graphic Designer

L&M Publicidades

Jun 2003 - Oct 2004 (1 year 4 months)

Created and maintained dynamic websites using ASP 3.0 and PHP. Managed layout and diagramming of a bi-weekly newspaper.

ASP 3.0 PHP Photoshop CorelDraw Fireworks Dreamweaver

Analista de Suporte

Rensoftware Tecnologia em Sistemas

Aug 2004 - Aug 2004 (0 months)

Provided Tier 2/Technical back-office support for Commercial Automation software. Analyzed legacy system behavior to identify root causes of technical discrepancies.

DELPHI 7