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Rainer Segura PeñaRP
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Rainer Segura Peña

@rainersegurapea

Solution Architect at i, shaping Smart Suite SaaS architecture with Java, Spring Boot, and AWS.

Paraguay
Message

At i, I lead architecture for Smart Suite SaaS with Java, Spring Boot, and Spring Cloud. I define technical decisions, standards, and implementation guidance for the team.

I designed multi-tenant identity and access around Kong API Gateway, with JWT, personal tokens, API keys, and SAML with Okta. I also designed the Angular back office and its Java Backend for Frontend, including integration contracts, role permissions, and event-based auditing.

I led the consolidation of electronic invoicing services into a modular Java and Spring Boot monolith, reducing the number of deployments while keeping clear component boundaries. The system uses PostgreSQL and DocumentDB.

I design AWS infrastructure with Terraform and define shared Java libraries for persistence, API documentation, caching, logging, and encryption. I also use Cursor, Kiro, and Gemini to help prepare and structure technical documentation.

Experience

Work history, roles, and key accomplishments

ES

Lead Developer

EXCELSIS SACIG

Jun 2016 - Jan 2022 (5 years 7 months)

Led development efforts, overseeing technical implementation and team coordination.

UI

Jefe de Departamento de Desarrollo de Componentes y Servicios Telemáticos

Universidad de las Ciencias Informáticas

Sep 2011 - May 2016 (4 years 8 months)

Managed the department responsible for developing components and telematic services.

Education

Degrees, certifications, and relevant coursework

Universidad de las Ciencias Informáticas logoUI

Universidad de las Ciencias Informáticas

Ingeniero en Ciencias Informáticas, Redes y Teleinformática

2006 - 2011

Ingeniero en Ciencias Informáticas degree from Universidad de las Ciencias Informáticas, with focus on Redes y Teleinformática.

Amazon Web Services logoAS

Amazon Web Services

AWS Certified Cloud Practitioner, Cloud Computing

AWS Certified Cloud Practitioner certification issued by Amazon Web Services, valid from November 2026 to November 2029.

AC

AWS Training & Certification

AWS Cloud Practitioner Essentials, Cloud Computing

Completed AWS Cloud Practitioner Essentials (Español LATAM) course on November 2, 2026.

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