Sergi Falcón Xarau
Senior Product Engineer
Product engineer who owns software end-to-end—from stakeholder discovery and product spec through design, build, deployment, and production operations. Ships full-stack and AI-powered products in production at global scale, turning ambiguous problems into deployed solutions with measurable impact.
Work Experience
Senior Product Engineer
Feb 2024 - Present
Porsche Digital
Barcelona, Spain
Astro.JS Vue TypeScript Playwright NodeJS AWS Storyblok AI
- Own the full product engineering pipeline for a core porsche.com workstream—discovery, product spec, architecture, implementation, release, and production ownership—partnering directly with product, marketing, and market stakeholders.
- Sole inventor and end-to-end owner of Porsche's first AI marketing feature: an AI-powered model finder (natural-language search) live in production on porsche.com/uk, increasing engagement by 200%+ vs. the legacy search experience.
- Led the front-end architecture migration of porsche.com, delivering a modern stack using AstroJS and VueJS/TypeScript, improving page load performance by up to 40% across global regions.
- Built and scaled a full quality engineering strategy including visual, E2E, smoke, and unit testing using Playwright, reducing production regressions by 60%+.
- Architected and maintained CI/CD pipelines using AWS and GitLab CI, enabling daily production deployments across 85+ markets.
- Integrated Storyblok CMS with NodeJS services, enabling real-time content delivery and reducing content publishing time by 70% for experiences serving millions of users monthly.
Full Stack Engineer
May 2023 - Feb 2024
Viaplay
Barcelona, Spain
React NextJS TypeScript Cypress PHP NX AWS
- Owned checkout and payments features end-to-end using React, TypeScript, Next.js, and NX monorepo, accelerating feature delivery speed by 30%.
- Introduced the first automated E2E and smoke testing suite using Cypress, increasing release confidence and reducing hotfixes by 50%.
- Developed backend services and payment features using PHP (Yii), improving checkout reliability and reducing payment failures.
- Contributed to shared component architecture used across multiple product teams, improving UI consistency and reducing duplicated code.
Engineering Manager
Sep 2022 - May 2023
Fever
Barcelona, Spain
Product Management Career Paths Agile OKRs Data-driven
- Led and mentored a cross-functional engineering team, improving sprint predictability and delivery success rate by 35%.
- Redesigned Agile processes (Scrum + Kanban hybrid), reducing delivery cycle time and increasing throughput across multiple product streams.
- Partnered with product leadership and stakeholders to shape roadmap priorities from business problems into shipped outcomes aligned with KPIs.
- Implemented data-driven performance tracking using engineering metrics and OKRs, reducing technical debt backlog.
- Established structured career growth frameworks and 1:1 mentoring processes, improving team retention and engagement.
Team Lead & Senior Frontend Engineer
Jul 2020 - Sep 2022
SEAT:CODE
Barcelona, Spain
Angular Nx Monorepo TDD GitHub Actions SonarQube Microfrontends Management
- Led a team of 9 engineers delivering large-scale digital automotive platforms using micro front-end architecture.
- Designed and scaled micro front-end architecture using Angular, Nx Monorepo, and TDD, improving platform scalability and reducing integration defects.
- Built enterprise CI pipelines using GitHub Actions, SonarQube, and automated testing suites, increasing code quality and reducing production incidents.
- Drove cross-team engineering standards, improving collaboration velocity and reducing rework across teams.
- Led performance reviews, salary reviews, hiring processes, onboarding programs, and technical mentoring initiatives.
Frontend Engineer
Jun 2019 - Sep 2020
Credimarket
Barcelona, Spain
Angular Verdaccio Socket.io Akita Reactive Programming
- Architected front-end platform for internal CRM using Angular and reactive programming, improving internal operational efficiency.
- Built reusable component libraries distributed via Verdaccio, accelerating internal product development.
- Implemented real-time features using Socket.io and state management using Akita, improving user interaction performance.
Frontend Engineer
May 2018 - Jun 2019
Worldline
Barcelona, Spain
Angular JavaScript Accessibility Cross-browser
- Delivered multiple client-facing projects including fintech dashboards, healthcare chat platforms, and interactive web applications—working closely with customer stakeholders from requirements to delivery.
- Implemented cross-browser compatibility and accessibility standards, improving product usability and compliance.
Web Developer
Mar 2015 - Apr 2017
IndianWebs
Barcelona, Spain
PHP JavaScript Prestashop CSS jQuery
- Delivered full-stack web solutions for SMEs including e-commerce platforms using PHP, JavaScript, and Prestashop.
- Helped local businesses digitize operations and launch online sales channels from zero.
Extracurricular
Co-founder
Jan 2020 - Present
Refy
Barcelona, Spain
SaaS Full Stack Product 0→1
- Co-founded and shipped a 0→1 SaaS referral recruitment platform used by multiple paying companies.
- Owned product spec, full-stack architecture, cloud infrastructure, and product delivery lifecycle.
- Product: refyapp.com
Hackathon Winner
Jan 2023
Viaplay Hackathon
Barcelona, Spain
AWS Lambda AI Hackathon
- Built and deployed an AI-powered subtitle translation system using AWS Lambda enabling scalable multi-language content delivery.
Education
BSc Computer Science (Software Engineering)
Sep 2015 - Apr 2019
Autonomous University of Barcelona
Bachelor's Degree
Network Systems Administration
Sep 2013 - Apr 2015
Institut Bernat el Ferrer
Vocational Education and Training (VET)
Microcomputer Networking Systems
Sep 2010 - Apr 2012
Institut Bernat el Ferrer
Certificate of Higher Education (HNC)
Languages
C1
English C2
Spanish (native) C2
Catalan (native)