Guilherme Santos
Senior Software Engineer at Agent.Shop
Fazenda Rio Grande, Paraná, Germany
Summary
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Senior🎓
Top SchoolGuilherme Santos is a senior software engineer and engineering leader with nearly two decades in tech and a decade of hands-on experience building scalable Ruby on Rails platforms, cloud-native infrastructure, and AI-driven products. He’s taken systems from zero to millions of users—growing an HR platform to a 5M candidate database and 10M monthly accesses, and later scaling commerce-focused AI agents for conversational shopping on WhatsApp. Comfortable toggling between C-level strategy and sandbox coding, he has led teams, cut operational costs through cloud migrations and open-source tooling, and improved business KPIs like payment error rates and ARR. Technically fluent in Kubernetes, AWS/GCP/Azure, PostgreSQL, vector search, Elasticsearch and Redis, he pairs pragmatic DevOps with product-minded engineering. Based in Germany with Brazilian roots, he combines startup grit and consultancy breadth, often surfacing value by aligning technical roadmaps tightly with business outcomes.
10 years of coding experience
12 years of employment as a software developer
Functional Academy SAP - FI (TFIN50/52) SAP FI, Functional Academy SAP - FI (TFIN50/52) SAP FI at HB BrasilPostgraduate Degree Java Technology, Postgraduate Degree Java Technology at Federal University of Technology - ParanaBachelor's degree Information Technology, Bachelor's degree Information Technology at Universidade Federal do ParanáIntroduction to CMMI Version 1.2 CMMI, Introduction to CMMI Version 1.2 CMMI at Carnegie Mellon University
Portuguese, English, Spanish
Stackoverflow
170reputation
8kreached
4answers
2questions
Github Skills (97)
dashboard10
postgresql10
clojure10
data-visualization10
database10
mysql10
cloud-api10
slack10
visualization10
sidekiq9
charts9
metabase9
helm9
sql9
yum9
Programming languages (6)
Github contributions (5)
Abler-Recrutamento-Digital/jobs
Sep 2019 - Jul 2022
Contributions:11 commits, 10 pushes in 2 years 10 months
oitedi/ruby_whatsapp_sdk
Oct 2024 - Mar 2025
A lightweight, efficient Ruby gem for interacting with Whatsapp Cloud API.
Contributions:1 release, 6 PRs, 9 pushes in 5 months
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