Work Profile Barcelona, Spain

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

I help teams build digital products that feel clear and genuinely pleasant to use. My hands-on work centers on frontend engineering with Expo and React Native, with experience in React, Vue, and Nuxt.

I work best in the overlap of product, engineering, and UX: thinking not only about implementation, but also whether a feature deserves to exist, how it should fit into the product, and what keeps the codebase healthy after the first push to ship.

React Native / ExpoVue / NuxtProduct-minded deliveryAI-supported workflowsFrontend architectureBackend support
Photo of Lukas
Lukas Werner

Frontend-heavy product engineer working across implementation, product clarity, and delivery momentum.

Best fit

Mobile and web products that need both thoughtful implementation and product judgment.

Working style

Close to product, design, and engineering, with attention to clarity, UX, and maintainability.

Based in

Barcelona, working comfortably across distributed teams and cross-functional collaboration.

Languages
GermanNativeEnglishFluentSpanishFluent
What I build

Digital products that feel clear, genuinely pleasant to use, and less quietly frustrating.

How I work

In the overlap of product, engineering, and UX, thinking about feature fit as much as implementation.

AI in the workflow

Agentic setups, specialized tooling, and verification loops that reduce waiting time without lowering the bar.

Beyond frontend

Comfort stepping into backend and infrastructure when a project needs end-to-end momentum.

Selected Experience

A path through product, frontend, and full-stack delivery

The recurring thread in my work is not only implementation. It is helping products become clearer, more usable, and easier to keep healthy over time.

Current
10/2025 - PresentIndependent

Freelance Product Engineer

Barcelona, Spain

Independent consulting with a frontend-first, product-minded perspective.

  • Focused on pragmatic product engineering and UX-oriented implementation.
  • Using AI-supported development workflows to shorten iteration loops without sacrificing code quality.
Frontend deliveryProduct engineeringUX-minded implementationAI workflows
10/2025 - Present1234 Mission LtdPart time

Co-Founder / Frontend + Product Engineer

Barcelona, Spain

Building AI-supported React Native mobile products while contributing across both product and implementation.

  • Owning frontend implementation in Expo and shaping product scope, copy, onboarding, and usability refinements.
  • Supporting delivery pragmatically with Firebase and agent-supported workflows.
React NativeExpoFirebaseProduct thinking
03/2024 - 09/2025H&D Aplicaciones, Software y Desarrollo

Senior Frontend Engineer

Madrid, Spain

Supported ongoing projects by pushing structural improvements around clarity, architecture, and maintainability.

  • Helped shape work from early planning in Confluence and Miro through Jira ticket definition into implementation.
  • Organized alignment around code quality, testing, and healthier engineering workflows.
  • Wrote the tender-winning frontend concept for a major Nuxt-based project with substantial business importance.
Team LeadFrontend architectureConsulting
11/2021 - 02/2024Bridgestone Mobility Solutions

Fullstack Engineer

Barcelona, Spain

Helped drive a React application for vehicle fleet management through launch and continued support.

  • Contributed to backend services owned by the team and took on on-call responsibilities.
  • Supported technical design and implementation decisions across a broader product context.
  • Took on research and discovery work to help conceptualize new features with cross-disciplinary colleagues.
ReactSpring BootDevOps support
02/2016 - 02/2020Wolf-Waagen GmbH

Founding Product Engineer

Waidhaus, Germany

Coordinated frontend development while the company grew from startup stage toward European market leadership.

  • Launched 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.
BackboneJSVueData-heavy web appsEarly-stage product growth
Technical Toolkit

Frontend depth, supported by delivery and platform range

I am strongest when building product-facing interfaces, but the stack around that work is broad enough to keep delivery moving instead of stopping at boundaries.

Primary hands-on

Where I spend most of my day-to-day implementation energy.

TypeScriptReact Native / ExpoReactVue.js / NuxtTailwind CSS
Quality and delivery

The practices I tend to strengthen once I am inside a product team.

Product scopingCross-functional collaborationTesting practices
Backend and platform support

Systems I am comfortable stepping into to keep a product moving end to end.

RustFastAPISpring BootFirebaseMongoDBPostgreSQLDocker
Beyond the Timeline

Research roots and ongoing side missions

The profile also makes more sense with the research background behind it and the projects I support outside primary delivery work.

Education and Research

Master of Science in Computer Science

Friedrich-Alexander-University Erlangen-Nuremberg ยท Final grade 1.0

A research-heavy background that still shapes how I reason about systems, tradeoffs, and technical depth.

  • Master's thesis on simulating the motion of very light particles in fluid with an adaptively refined lattice Boltzmann method.
  • Journal publication in the International Journal for Numerical Methods in Fluids.
Side Quests
PIKOA

Founder advisory and support across the digital side of the business.

Built with Nuxt and Storyblok

Visit pikoa.de
Zeiglhaus Parkstein e.V.

Remote support for a hometown project reviving local beer brewing traditions after more than 125 years.

Built and maintained with Nuxt and Storyblok

Visit zeiglhaus.de
Contact

If you need frontend depth with product judgment, I would be glad to talk.

I am especially interested in mobile and web products that care about interaction quality, clear thinking, and pragmatic delivery from idea to implementation.