Work Profile | Lukas Werner

Barcelona, Spain

LinkedIn

Product-minded software engineer with frontend focus and backend expertise.

I help teams build digital products that feel clear and genuinely pleasant to use. My hands-on work centers on frontend engineering with Vue, Nuxt, React and Expo. Interface clarity, copy, responsiveness and the many small details that make a product feel obvious instead of quietly frustrating is where I strive.

I like working in the overlap of product, engineering and UX. That includes thinking not only about implementation, but also about whether a feature is worth building, how it should fit into the product, and what keeps a codebase maintainable once the initial push to ship is over.

I incorporate AI-support into workflows and use agentic development with different LLM providers and specialized agents. My main driver is OpenCode, the point is less about the tool than the workflow, though: reducing waiting time, parallelizing the right work and a quicker development-to-result loop without sacrificing code quality.

While often not my main responsibility, I am comfortable moving beyond the frontend into backend and infrastructure to support delivery pragmatically. I have worked with Spring Boot backends with hexagonal architecture, participated in the development of Rust microservices behind GraphQL APIs and prototyped Python FastAPI-driven backends in personal projects.

Core Strengths

  • Frontend engineering with Vue, Nuxt, React and Expo
  • Product-minded delivery with close attention to UX and feature fit
  • AI-supported development workflows with agentic setups
  • Structural improvements in architecture, clarity and team workflows
  • Cross-functional collaboration across product, design and engineering
  • Backend and infrastructure support when a project needs end-to-end ownership

Technical Toolkit

Primary

  • TypeScript
  • Vue.js / Nuxt
  • React / Expo
  • Tailwind CSS
  • Jest / Playwright / Cypress

Supporting

  • FastAPI
  • Spring Boot
  • MongoDB / PostgreSQL
  • Firebase
  • Docker / Kubernetes

Selected Experience

Current

Freelance Product Engineer Barcelona, Spain 10/2025 - Present

  • Independent consulting with a frontend-first, product-minded perspective.
  • Focus on pragmatic product engineering, UX-oriented implementation and AI-supported development workflows.

Co-Founder / Frontend + Product Engineer at 1234 Mission Ltd part time 10/2025 - Present

  • Working on AI-supported development of React Native mobile applications with Expo.
  • Contributing across frontend implementation, product thinking, copy improvements, onboarding streamlining and usability studies.
  • Supporting delivery pragmatically with Firebase and AI-assisted workflows.

Stack and context: React Native, Expo, Firebase, AI-supported development, product thinking.

H&D Aplicaciones, Software y Desarrollo

Senior Frontend Engineer Madrid, Spain 03/2024 - 09/2025

  • Supported ongoing projects by proposing and implementing structural improvements around code clarity, architecture and maintainability.
  • Helped shape work from early planning in Confluence and Miro through ticket definition in Jira into implementation with the team.
  • Organized alignment around code quality, testing and healthier engineering workflows.
  • Wrote the tender-winning frontend concept for a major Nuxt-based project with a modern stack and substantial business importance.

Stack and context: Vue, Nuxt, frontend architecture, consulting.

Bridgestone Mobility Solutions

Fullstack Engineer Barcelona, Spain 11/2021 - 02/2024

  • Helped drive a React application for vehicle fleet management through launch and continued support.
  • Contributed improvements to backend services owned by the team and took on on-call responsibilities.
  • Supported technical design and implementation decisions across the wider product context.
  • Took on research and discovery tasks to help conceptualize new features with colleagues from different disciplines.

Stack and context: React, frontend delivery, backend support, product collaboration.

Wolf-Waagen GmbH

Frontend and Product Engineer Waidhaus, Germany 02/2016 - 02/2020

  • Coordinated frontend development while the company grew from startup stage toward European market leadership.
  • Helped launch an extensive web application for analyzing and visualizing data from bee hives.
  • Initiated the redesign and rewrite of the existing frontend to modernize the interface and introduce Vue.js.

Stack and context: BackboneJS, Vue, data-heavy web application, early-stage product growth.

Education and Research

Friedrich-Alexander-University Erlangen-Nuremberg Master of Science in Computer Science, final grade 1.0

Languages

  • German - native
  • English - fluent
  • Spanish - fluent

Side Quests

PIKOA - Founder advisory and digital support

  • Built the website with Nuxt and Storyblok: pikoa.de
  • Support the founder on the digital side of presenting the business online.

Zeiglhaus Parkstein e.V. - Founding member and digital advisory

  • Maintain the website with Nuxt and Storyblok: zeiglhaus.de
  • Help shape design decisions and keep the setup approachable so non-technical members can update content themselves.

Contact

... or via my LinkedIn.