David Sabalete | Senior Full Stack Developer | Vue.js Expert | Barcelona

Senior Full Stack Engineer with 20+ years building performant, accessible, and scalable web applications using Vue.js, Nuxt.js, Node.js, and TypeScript. I specialize in translating complex business requirements into high-quality products that users love.

Experienced in designing scalable solutions on AWS with Lambda, API Gateway, and serverless architectures. Growth-driven engineer who has led A/B testing initiatives that improved conversion and built SEO-optimized applications serving 45M+ monthly visitors.

Built and led full stack initiatives that increased test coverage from 30% to 80%+, catching 95% of regressions before deployment. Mentor engineers on code reviews, architecture decisions, and best practices. Embrace AI-assisted development workflows to boost productivity while maintaining quality.

Available for remote roles. I thrive in collaborative, cross-functional product teams where continuous learning and knowledge sharing drive product excellence.

Experience

Senior Frontend Developer

Allianz Technology

April 2026 - July 2026

Developed customer-facing features for Meine Allianz, serving 2M+ insurance customers across Germany in a cross-functional product team. Contributed to Node.js backend services and API design. Reduced feature delivery cycle by 30% through component architecture improvements and rigorous code review processes.

Senior Full Stack Developer

LoveToKnow Media Spain

November 2019 - January 2026

Led full stack development for YourDictionary.com (45M+ monthly visitors) using Vue.js, Nuxt.js, and Node.js on AWS Lambda. Architected the backend with API Gateway and serverless technologies, powering the content delivery layer. Drove growth through A/B testing and SEO optimization, achieving top search rankings for high-competition keywords. Improved Lighthouse performance from 55 to 92+ and reduced Largest Contentful Paint by 60%. Built a shared component library of 40+ reusable Vue components adopted by 3 product teams. Increased automated test coverage from 30% to 78%, catching 95% of regressions. Drove Nuxt 2 to Nuxt 3 migration across 5 micro-frontends with zero downtime. Mentored junior engineers and established code review standards.

Frontend Developer

EDREAMS Odigeo

April 2018 - October 2019

Owned quality for a high-traffic travel booking platform processing 10M+ daily searches. Built automated testing pipelines that reduced production bugs by 40%. Led A/B testing framework implementation, shipping 20+ experiments that improved conversion by 12%. Reviewed code across 6 engineering teams ensuring consistent standards. Maintained 85%+ test coverage across multiple codebases.

Senior Frontend Developer, Test Automation Engineer and Analyst Programmer

CAPITOLE CONSULTING

July 2016 - April 2018

Developed interactive booking interfaces for a major travel agency platform (Backbone, jQuery, Lodash), serving 500K+ monthly users. Refactored legacy code into modular components, reducing page load time by 35%. (10/2017 - 04/2018)
Designed and deployed automated test suite (TestComplete + Jenkins CI) for a pharmaceutical compliance system. Cut regression testing from 3 days to 4 hours, achieving 92% automation coverage across 200+ test cases. (01/2017 - 10/2017)
Architected migration of a legacy banking application to a responsive AngularJS SPA, serving 100K+ corporate banking users. Delivered project on schedule across 6 months, reducing page load times by 50% and enabling mobile access for field agents. (07/2016 - 12/2016)

Web Developer

FIATC Seguros

June 2003 - July 2016

Designed and built the online insurance sales platform handling 15K+ policies per year across travel assistance and motor insurance. Streamlined the quote-to-purchase flow, reducing drop-off by 25% and cutting average transaction time from 8 to 3 minutes.

Web Developer

Institut Catala de Tecnologia

June 2001 - May 2003

Maintained the organization's public web portal and 3 internal web applications, ensuring 99.5% uptime. Built XML/XSLT publishing pipeline reducing content publication time from 2 days to 4 hours.

Web Developer

Secretariaplus.com

April 2000 - May 2001

Developed and maintained ASP-based web application with SQL Server backend managing 10K+ client records. Built data entry interfaces that reduced processing time by 40% for administrative staff.

Education

Google Data Analyst Certificate

Coursera

Nove 2022 - June 2023

Certificate

E-business Technologies

Institut Català de Tecnología

Oct 2001 - May 2002

Master's degree

Industrial technical engineering

Universitat Politècnica de Catalunya

Sept 1995 - Jun 1999

Electronic specialty

Certificates

Datacamp - Working with the OpenAI API

University of Helsinki - Full Stack Open Containers

University of Helsinki - Continuous Integration

University of Helsinki - React Native

University of Helsinki - GraphQL

University of Helsinki - Typescript

Skills

Workflow

Mobile-First, Responsive Design
Cross Browser Testing and Debugging
Cross Functional Teams
Project management with Agile Methodologies and Scrum
Cutting edge JavaScript frameworks
Design principles and UX

Interests

I like to create websites for fun, trying out new technologies and tools to improve myself as a developer and stay up to date with current tech.

Apart from being a frontend developer, I am a gym goer and enjoy training with barbells and iron plates. I also love watching TED talks and I also enjoy binge watching films and series on Netflix (for improving my english skills 😉).

And during the summer, I enjoy go camping with my family near the sea.