06/28/2026 updated

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Frontend Engineer | React · TypeScript | Drupal Frontend & Theming Expert

Málaga, Spain
Only remote
Ingeniero - Computer Science, University of Buenos Aires
Málaga, Spain
Only remote
Ingeniero - Computer Science, University of Buenos Aires

Profile attachments

CV-Marcelo-Tosco-Frontend-Drupal.pdf

About me

Senior Frontend Engineer with 23+ years of web experience. Specialized in React, TypeScript and Next.js for product work, and in Drupal frontend & theming (Twig, Sass, component-based theming) for enterprise CMS projects. Available for part-time, fixed-scope or remote contracts.

Tailwind CSSJavaScriptPHPHTML5Cascading Style Sheets (CSS)DrupalNode.jsNext.jsSymfonyTypeScriptTailwindReact.jsVue.jsBackendSyntactically Awesome Style Sheets (SASS)TwigWebpackPlaywrightGraphQLFront End Software Development
Frontend Engineering - React, TypeScript, Next.js
20+ years building web products end to end. Strong with React, TypeScript, Next.js, Vue/Nuxt, component-driven UIs, design systems, accessibility (WCAG) and testing as defaults. Currently focused on senior frontend roles for product and enterprise platforms.

Drupal Frontend & Theming (17+ years)
Custom Twig theming, Storybook-driven components, multisite Drupal and headless/decoupled architectures with Drupal as a content backend for React/Next.js apps. Module development, design-system driven theming and CI/CD-friendly delivery.

Solution Architecture & Enterprise Integration
Designing scalable web architectures and integration patterns across enterprise clients (SAML, CIAM, Salesforce, Kafka). Multisite consolidation, governance frameworks and modernization across distributed teams in Europe and North America.

Full Stack & Backend
Strong Node.js and PHP/Symfony foundations. REST and GraphQL APIs, MySQL/PostgreSQL/MongoDB, Redis. Comfortable across the full stack while keeping frontend as the primary focus.

Testing & Quality
Playwright, Jest, unit and integration testing. Code review culture, component documentation, automated CI checks and frontend performance monitoring.

Tooling & DevOps
Vite, Webpack, Sass, Tailwind, Storybook. Git-based workflows, GitLab CI / GitHub Actions, Docker. Cloud experience on AWS and GCP, plus IaC and backup automation.

Collaboration & Delivery
Distributed teams across the DACH market and beyond. Close work with backend, UX, design and QA. Fluent English (C1), Spanish native, Italian C1; working German.

Experience

Professional experience10+ years
Freelancer since2025

Languages

EnglishFluentItalianFluentSpanishNative speaker

Project history

Senior Drupal Frontend Engineer

Dropsolid
Drupal frontend & theming engineer for enterprise CMS platforms. Build component-driven UIs in React and TypeScript (hooks, state management, design systems, atomic components) with unit and integration tests as a default.

Deep Drupal frontend work: custom themes, Twig templating and headless/decoupled architectures with Drupal as a content backend for React/Next.js applications.

Full stack across Node.js and PHP/Drupal (REST APIs, data modeling, integrations); ship through GitLab CI/CD with code review and mentoring.

Senior Front-end Engineer

Smartly.io
Frontend engineer on a global marketing platform orchestrating campaigns across Meta, TikTok and Google Ads. Owned the Google Ads integration within a unified campaign-design experience.

Worked in TypeScript, React and Node.js with strong testing discipline inside a Kafka-based microservices ecosystem shared by hundreds of developers, under strict quality gates and code review.

Solution Architect

1xINTERNET
Led frontend & Drupal architecture for enterprise clients across countries, bridging business stakeholders and engineering / design / QA teams.

CIRCOR - unified four division sites (CIRCOR, Pumps, Aerospace, CircleSeal) into a single multisite Drupal codebase, cutting maintenance workforce 75%; modernized across USA / France / Germany with aerospace-grade security.

AVL Automotive - centralized Drupal service hub integrating SAML, CIAM & Salesforce; patterns became company standard, cutting integration time 40% and release times ~50%.

Drupal Developer

Cocomore AG
Architected a scalable core Drupal platform powering 21 Nestle Purina country sites, with 90% less dev/deploy time and 70% lower infrastructure cost. Reusable components and a unified governance framework across markets.

Technical Leader

Front.id
Technical lead for major clients including Merz Pharma, Nestle Purina and World Bank. Set development standards adopted company-wide and mentored high-performing engineering teams.

Drupal Team Lead & E-learning Consultant

Euroinnova
Scaled a Drupal architecture powering 30+ high-traffic sites for a fast-growing e-learning company (33 to 300+ staff), generating 20% to 90% of revenue in 3 years.

Earlier: Front-end Team Lead at ideup! (2012) and freelance Drupal / Node.js developer and Drupal community module contributor (2012-2016).

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