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Paulo Reis

@pauloreis1

Software engineer at Wisebyte who re-architected a call-routing engine handling 10,000+ calls/sec.

Brazil
Message

At Wisebyte, I re-architected a real-time call-routing engine that handled 10,000+ calls per second, with routing decisions under 10 ms and 99.99% contracted uptime. I also designed event-driven pipelines processing about 70 million messages a day.

I co-founded Wisebyte and helped grow its engineering team from 3 to 10 while building software for more than 30 telecom operators, including a billing and mediation suite for up to 100 million calls a day. Across my work, I've built Java/JVM systems, microservices, and payment flows, and worked with Kafka, AWS, and rules engines.

Experience

Work history, roles, and key accomplishments

WI

Co-founder & CTO · Principal Engineer & Architect

Wisebyte

Jul 2008 - Jul 2023 (15 years)

Co-founded a software company serving 30+ telecom operators, growing engineering from 3 to 10 while writing production code. Designed a high-availability call-routing engine and delivered billing and mediation services.

OI

Senior Software Engineer

ONSCREEN, Inc.

Feb 2021 - Feb 2022 (1 year)

Technical owner for JoyTV end-to-end, a seniors video-calling service, building Node.js/TypeScript APIs on Google Cloud and integrating WebRTC/SIP/Zoom.

ON

Senior Software Engineer - Backend & Architecture

OneTok

Apr 2011 - Sep 2013 (2 years 5 months)

Owned the backend stack for a voice-enablement SaaS startup, designing public REST APIs and building distributed caching and a Drools rules engine.

SP

Senior Software Engineer

Sonner Administração Pública

Aug 2010 - Jan 2012 (1 year 5 months)

Built electronic service-invoice and payment-slip flows for a municipal tax platform, with strategy-based fine/interest calculation and multi-municipality fiscal configuration.

NC

Senior Software Engineer

Nalkan Consulting

Apr 2008 - Apr 2011 (3 years)

Owned Java EE provisioning and activation integrations between OSS/BSS and legacy systems, and drove architectural decisions on a contract-preserving SOAP middle layer.

IL

Senior Software Engineer

Inovar Consultoria Empresarial Ltda

Dec 2006 - Mar 2008 (1 year 3 months)

Delivered Java EE web-service integrations for CTBC (Algar) operations using JBoss, Tomcat, JAX-WS, and Hibernate.

SP

Software Engineer

Sonner Administração Pública

Jul 2002 - Dec 2006 (4 years 5 months)

Built the Transparency Portal, a public municipal expense website, using Java, Groovy, Struts 2, Oracle, and Tomcat.

Education

Degrees, certifications, and relevant coursework

UT

Unitri – Centro Universitário do Triângulo

Bachelor's, Computer Science

2002 - 2006

Bachelor's in Computer Science from Unitri – Centro Universitário do Triângulo, completed in 2006.

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