Sergio Pelegrina
Full Stack Engineer at Leadtech Group
Granada, Andalusia, Spain
Summary
🤩
Rockstar🎓
Top SchoolSergio Pelegrina is a Full Stack Engineer with 8 years of experience building scalable web and backend systems across startups and product teams from Granada, Spain. He has a strong backend focus—designing microservices in Node.js with Kafka-based streaming, integrating ScyllaDB, OpenSearch and MySQL—and is equally comfortable shipping React/Next.js frontends and TypeScript-driven UI work. Sergio’s early C work on the well-known Wazuh open-source security platform gives him practical security and systems-level experience, including fixes for OpenSSL, file-descriptor handling, and installer permissions that improved cross-platform robustness. He has also developed production-ready APIs in Python/FastAPI, deployed AWS Lambda functions, and automated business flows with Zapier, demonstrating a pragmatic blend of engineering and product thinking. Known for bridging performance-focused backend design with attention to user-facing quality, he brings hands-on problem solving from low-level debugging to distributed real-time architectures.
8 years of coding experience
5 years of employment as a software developer
Grado en Ingeniería Informática, Grado en Ingeniería Informática at Universidad de Granada
Github Skills (14)
permission10
access-management10
file-monitoring10
windows-security10
rights-management10
data-integrity10
security10
c119
c179
vulnerability-detection8
openssl8
security-automation7
xdr6
sia6
Programming languages (6)
Github contributions (5)
wazuh/wazuh
May 2019 - Nov 2019
Wazuh - The Open Source Security Platform. Unified XDR and SIEM protection for endpoints and cloud workloads.
Role in this project:
Security Engineer
Security EngineerContributions:51 commits, 10 PRs, 52 pushes in 5 months
Contributions summary:Sergio primarily focused on enhancing the security of the Wazuh platform through several code changes. These changes include fixing error messages related to OpenSSL, preventing the inheritance of unused file descriptors, and modifying permissions for Windows users to access the ossec-agent directory and fix permissions related to Windows' non-administrator users. Furthermore, the user addressed permissions issues in the MSI installer for non-administrator users. In addition, the user fixed race conditions related to various functions and made Solaris compilation adjustments.
malware-detectionendpointscompliancecloud-securitysecurity-hardening
sergiovp/TFG-OrganizeAndFly
Apr 2021 - Nov 2021
Repository dedicated to the development of the final university project at UGR. Organize&Fly is an open source web and mobile app for organising and planning made with love by his author.
Contributions:279 commits, 4 PRs, 140 pushes in 7 months
with-lovereactugrjavascriptdedicated
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