Luis Miguel García

Luis Miguel García

Senior Software Engineer with 25+ years building backends, infrastructure, and distributed systems — from the ground up.

01. About

Senior Software Engineer with 25+ years shipping production software, from cloud infrastructure and DBaaS platforms to distributed, high-availability systems.

I've architected a multi-tenant cloud product on AWS/GCP with Terraform and Packer, led the migration of a high-traffic marketplace to a decentralized architecture, and built automated verification systems that validate shipped binaries against their source code. Along the way I've founded a consulting firm, led engineering teams of up to 6, and shipped software for organizations ranging from the National Bank of Spain to fast-moving startups.

I care about shipping reliable software fast: automating the boring parts, keeping CI green, and building systems that other engineers genuinely enjoy working on.

02. Profiles

03. Tech Stack

Languages

TypeScriptJavaScriptPythonJavaPHP

Backend

Node.jsSvelteKitLaravelJ2EEJBossWebLogic

Frontend

SvelteVue.jsTailwindCSSJekyll

Cloud & Infrastructure

AWSGCPTerraformPacker

DevOps & Tooling

GitLab CILinuxAntora

Databases

PostgreSQLMySQL

04. Work Experience

Lead Developer

WalletScrutiny.com Oct 2024 – Present

Spearheading the Nostr integration (including Zaps) for decentralized asset registration via Nostr/Blossom. Built a verification system ensuring software binaries match the source code, with statuses stored on Nostr relays. Implemented an Automatic Build Server and continuously optimize the web app and build performance.

JekyllNode.jsNostr

Senior Software Developer

Plebeian Market Sep 2022 – Apr 2024

Maintained and optimized the leading marketplace application within the Bitcoin ecosystem. Led the migration to Nostr (NIP-15 / NostrMarket) and integrated a shopping cart, Lightning Network payments, and end-to-end encrypted private messages.

SvelteTailwindCSSPythonPostgreSQLNostr

Senior Software Engineer

LeanXcale Jan 2020 – Mar 2022

Engineered the cloud (DBaaS) product, provisioning AWS/GCP infrastructure with Packer and Terraform. Integrated third-party APIs (AWS, Stripe, Prometheus, MailChimp, Zendesk), set up CI/CD pipelines in GitLab, and designed the public Cloud API and documentation portal (Antora).

PackerTerraformAWSGitLab CI

Founder

Ktecho Consulting 2008 – 2019

Ran an IT consulting firm for over a decade while staying hands-on across engineering and technical leadership. Led a 6-person team as Product Owner / Scrum Master at the National Bank of Spain, building a DevOps platform for infrastructure management and delivery automation; founded and acted as CTO of Aalquilar.es (a real-estate startup); and delivered diverse projects spanning SaaS, e-commerce, IoT, and enterprise integrations (Caprabo, TNT Express).

Product OwnerScrumLaravelVue.jsWordPress

Team Leader / J2EE Developer

HP / Telefónica Jan 2006 – Mar 2008

Led a 4-person team building Telefónica's New Services Administration Tool, overseeing architecture and code quality. Previously developed part of Telefónica Video Supervision, a highly available distributed video surveillance system with image capture via Java JNI.

JavaJ2EEJBossWebLogic

Software / Hardware Technician

SIPEC / Caprabo 2005

Executed time-critical overnight server and client migrations from MS-DOS to Linux (RHEL) for a food distribution company.

LinuxRHEL

Developer

ANELI 2004 – 2005

Built a custom CMS and web portal for an oil-sector company using PHP and MySQL.

PHPMySQL

Hosting Architect

Costa Norte Telecom 2004

Built and managed a hosting server on Gentoo Linux using commodity hardware for a newly founded company.

LinuxGentoo

IT Manager

Tele-Max Guardo 1996 – 2003

Developed commercial management software (Clipper) and implemented and managed a Windows LAN and PC infrastructure for retail operations.

ClipperWindowsNetworking

05. My Projects

06. Open-source Contributions