08/09/2026 updated

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100 % available

Principal Software Engineer & Technical Lead

barcelona, Spain
Only remote
Bachelor in Computer Science
barcelona, Spain
Only remote
Bachelor in Computer Science

Profile attachments

ALI-CV.pdf

About me

Principal Software Engineer, 20 years across PHP, Python, and modern JS. Currently leading architecture and AI/LLM adoption (RAG, local LLM deployment) across 4 teams at Xcelirate. Background spans startups to enterprise integrations (Bugaboo, KPN). Senior judgment, hands-on delivery.

RAGJavaScriptPHPAgile MethodologyAmazon Web ServicesCloud ComputingDatabasesContent ManagementContinuous IntegrationDevOpsDrupalE-CommerceElasticsearchPython (Programming Language)LaravelProject ManagementScrum MethodologyRabbitMQRedisSymfonyTypeScriptWordPressWorkflowsData Storage TechnologiesReact.jsLarge Language ModelsVue.jsContainerizationFull Stack DevelopmentTeam ManagementApache KafkaWeb TechnologiesApi DesignRestful ApiTerraformMarketplaceDatabase AdministrationDockerMicroservices
Full-Stack Development
Expertise in PHP, Python, JavaScript frameworks including React, Vue.js, Symfony, Laravel, and modern web technologies for building scalable applications

Cloud Infrastructure & DevOps
Proficiency in AWS services, Docker containerization, Terraform infrastructure as code, and CI/CD pipeline management

Team Leadership & Architecture
Experience leading development teams, making architectural decisions, and managing technical projects across multiple repositories

Database Management
Experience with Redis, RabbitMQ, and various database technologies for data storage and messaging solutions

API Development
Expertise in building RESTful APIs, microservices architecture, and third-party system integrations

E-commerce Platforms
Development experience with e-commerce systems, PIM solutions, and marketplace platforms

Content Management Systems
Experience with CMS platforms including Drupal, WordPress, and custom content management solutions

Agile Methodologies
Implementation of Scrum practices, project management, and agile development workfl

AI & LLM Integration
Building and deploying RAG systems and local LLM infrastructure in production, plus creating AI usage policies and governance for engineering teamsows

Experience

Professional experience10+ years
Freelancer since2016

Languages

EnglishNative speakerDutchGoodSpanishBasic knowledge

Project history

Principal Software Engineer

Xcelirate
Currently overseeing 4 technology teams, contributing to multiple repositories, responsible for architectural decisions and technical discussions, serving as direct line manager for development teams

Freelance Senior Developer

The Modern Milkman
Modernizing codebases of applications supporting supply and logistics operations for drivers, maintaining and improving client-facing web applications

Freelance Senior Developer

Briq Bookings
Maintaining legacy Laravel application with JavaScript/jQuery, building new Vue 3 application in parallel, integrating with legacy system for gradual rollout

Freelance Senior Developer/Team Lead

XS4All
Responsible for Online Services team maintaining customer-facing applications, coordinating multi-team integration efforts to align XS4ALL teams with KPN

Freelance Solutions Architect / Scrum Master

On That Ass
Designing and delivering new digital platform including e-commerce, catalogue, PIM, and customer service systems, building API gateway using Node.js

Freelance PHP Developer

ShopWorks
Working on statistics and advertisement dashboard platforms for dealers in Marktplaats, restructuring gumtree codebase and extensive solution finding missions

Freelance Full Stack Developer

TamTam
Working on API platform built with Silex and Drupal 7 frontend, developing ticketing and order systems for Walibi including Walibi Fright Night project

Freelance Full Stack Developer

Channel Media Company
Working on high-traffic platform connecting distributors and end users across multiple countries, including custom PIM, catalogue, and e-commerce systems

Senior PHP Lead

Bugaboo
Leading development of central PHP system built on Slim, acting as API mediation layer, managing development direction and guiding developers

API Systems Integration Engineer

Bugaboo
Leading design and development of APIs across complex e-commerce ecosystem, implementing API design-first approach and creating internal developer portal

Medior PHP Developer

Response Concepts
Working on large-scale PHP-based lead generation and affiliate management systems, refactoring legacy codebases and developing high-volume API integrations

PHP Developer

Nuicart
Working on custom PHP framework for e-commerce and inventory systems, developing e-commerce solutions and CMS implementations based on Typo3

Development Lead

Multimedia Mars
Leading development team growth from one to six developers, responsible for technical analysis, solution design, and managing large-scale systems development

Junior Web Developer

Sehar Soft
Working in development team delivering projects for multiple clients, building websites and applications using native PHP, HTML, and JavaScript

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