08/26/2026 updated
100 % available
Senior Full-Stack Engineer | Laravel/PHP | SaaS & System Architecture
Tarragona, Spain
Only remote
BSc in Computer EngineeringAbout me
Senior Full-Stack Engineer with 15+ years building SaaS and complex web apps. Expert in Laravel/PHP, backend architecture, APIs, integrations and databases. Hands-on with JavaScript/TypeScript, system architecture, technical leadership, AI/LLM integrations and AI-assisted development.
PHPSoftware as a ServiceData ArchitectureLaravelPHP DevelopmentSoftware ArchitectureSolution ArchitectureSystems DesignPHP FrameworksBackendFull Stack Development
SaaS Architecture & Backend Development
Design and development of scalable SaaS platforms and complex production systems, including multi-tenant architectures, subscription workflows, payments, integrations, relational databases and cloud infrastructure.
Laravel / PHP Engineering
15+ years of backend and web development experience, with strong hands-on expertise in PHP and Laravel. Building production applications, REST APIs, integrations, background jobs, authentication, database-heavy workflows and maintainable modular architectures.
System Design & Software Architecture
Design of scalable application architectures, service boundaries, data models, API strategies and integration patterns. Strong focus on maintainability, performance, security and pragmatic technical decisions.
APIs & Systems Integration
Extensive experience designing and integrating REST and GraphQL APIs, payment providers, authentication systems, e-commerce platforms and third-party services across complex digital ecosystems.
Full-Stack Development
End-to-end product development across Laravel/PHP backends and modern JavaScript/TypeScript frontends. Hands-on experience with React and Next.js for SaaS applications, dashboards and customer-facing products.
Databases & Data Architecture
Strong experience with MySQL and relational database design, including complex schemas, migrations, performance considerations and data-intensive business workflows.
Cloud, Docker & Delivery
Deployment and operation of production applications using Docker, cloud infrastructure, Git-based workflows and CI/CD practices, with experience designing reliable and scalable application environments.
Technical Leadership
Technical leadership across SaaS and digital product teams, covering architecture, code quality, technical strategy, delivery planning, integrations and coordination between product and engineering.
AI / LLM Integration & AI-Assisted Development
Integration of LLMs and AI capabilities into production products and workflows, including API-based AI features and automation. Daily use of AI-assisted development tools to accelerate implementation, testing and technical analysis while maintaining architectural control.
Experience
Professional experience10+ years
Freelancer since2015
Languages
EnglishFluentSpanishNative speaker
Project history
Leading the architecture and development of SaaS platforms, AI-driven systems, and scalable digital products for startups and international clients. Focused on technical strategy, product architecture, systems integration, and end-to-end product delivery. Collaborating directly with founders and stakeholders to transform business ideas into scalable technical solutions.
Built and delivered custom digital products, e-commerce platforms, and tailored software solutions for companies across multiple industries. Led product execution, client communication, technical implementation, and project coordination from concept to launch.
Led technical strategy, architecture, and product execution across multiple SaaS platforms, e-commerce ecosystems, and custom digital products. Coordinated cross-functional teams, defined scalable architectures, development standards, deployment workflows, and third-party integration strategies. Acted as bridge between business requirements and technical execution.