David Backhausen - Senior Frontend Architect & UX Designer

Q: Where is David based?

David is based in Kassel, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does David speak?

David speaks the following languages: German (Native), English (Intermediate) .

Q: How many years of experience does David have?

David has at least 20 years of experience. During this time, David has worked in at least 8 different roles and for 10 different companies . The average length of individual experience is 2 years and 1 month . Note that David may not have shared all experience and actually has more experience.

Q: What is David's latest experience?

David's most recent position is Founder / Fullstack Product Engineer / UX Designer at Ondoko .

Q: What companies has David worked for in recent years?

In recent years, David has worked for Ondoko , Paceteq , Symbiofy.ai , paceteq , and yoself.de .

Q: Which industries is David most experienced in?

David is most experienced in industries like Information Technology , Media and Entertainment , and Retail . David also has some experience in Government and Administration , Pharmaceutical , and Sport .

Q: Which business areas is David most experienced in?

David is most experienced in business areas like Information Technology , Product Development , and Marketing .

Q: Which industries has David worked in recently?

David has recently worked in industries like Government and Administration , Information Technology , and Pharmaceutical .

Q: Which business areas has David worked in recently?

David has recently worked in business areas like Information Technology and Product Development .

Recommended expert

Kassel, Germany

Check rate

Experience

Jan 2026 - Jun 2026

6 months

Founder / Fullstack Product Engineer / UX Designer

Ondoko

Built a complete real-time multiplayer platform with game engine, lobby system, game tables, spectator mode, and persistent game history.
Implemented product-relevant multiplayer workflows with WebSocket communication, live synchronization, voice chat, mobile app features, and push notifications.
Developed a scalable full-stack architecture with authentication, PostgreSQL persistence, premium/billing integration, and extensive test coverage.

Jan 2025 - Dec 2025

1 year

Frontend Architect / UX Designer

Paceteq

Designed frontend architecture and UX for a specialized platform to support race stewards in incident analysis.
Developed high-performance dashboards for real-time synchronization of video feeds and telemetry data.
Conceptualized user-centered workflows for quick review, assessment, and documentation of critical race events.

Jan 2024 - Feb 2026

2 years 2 months

Senior Frontend Architect / UX Designer

Symbiofy.ai

Enhanced a multi-tenant AI platform for pharma teams with AI chat, SymbioBots, knowledge management, research, and health-check workflows.
Introduced a dark mode for core product areas and reusable UI components.
Set up internationalization for three languages with centralized translations, localized error messages, and quality checks.
Continuously improved UX/UI for complex workflows, especially chat experience, navigation, admin/configuration panels, tool outputs, and PDF/export features.

Jan 2024 - Dec 2024

1 year

Frontend Architect / UX Designer

paceteq

Frontend development and UX design within an agile team for a platform managing and orchestrating race track data.
Implemented interfaces for video, telemetry, and position data with a focus on quick understanding and robust usability.

Jan 2022 - Dec 2023

2 years

Senior Frontend Developer / UX Designer

yoself.de

Co-responsible for developing an e-commerce shop and a digital sleep check for personal sleep analysis.
Translated UX/UI concepts into production-ready Next.js interfaces and integrated with Shopify and Firebase services.

Jan 2021 - Dec 2023

3 years

Frontend Developer / UX Designer

OZG-Cloud

Frontend development of a specialized application for managing applications including case management, comments, message processing, and user data display.
Lead UX design for the conception and implementation of complex administrative workflows.
Planning and implementation of accessibility concepts in a public sector context.

Jan 2019 - Dec 2021

3 years

Frontend Developer / UX Designer

Hamburg Ship Register

Frontend development and UX design of a specialized application for managing ship data, contact details, and message processes.
Lead UX design for structuring and implementing administration-related workflows.
Responsible for accessibility concepts and their implementation in a regulated application environment.

Jan 2014 - Dec 2018

5 years

Managing Director

Micromerce

Concept, design, and development of a B2B platform for personalized customer engagement.
Management of product areas such as content management, loyalty programs, and shop management.

Jan 2011 - Dec 2018

8 years

On-site

Frontend Developer

OTTO

Social news feed development with user interaction, profile service, and editorial product references.
Web tool development for creating fashion compositions, including a like service.
Further development of core shop areas such as search, navigation, product listings, and product detail pages.

Jan 2006 - Dec 2017

12 years

On-site

Web Developer

Various

Concept, design, and development of a coaching platform including a mobile app for personalized content.
Development of an iOS app with a client CMS and release of a native iOS app for the Football World Cup.
Implementation of multilingual email campaigns and rich media websites.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Media and Entertainment, Retail, Government and Administration, Sport, and Pharmaceutical.

Information Technology

Media and Entertainment

Retail

Government and Administration

Sport

Pharmaceutical

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, and Marketing.

Information Technology

Product Development

Marketing

Summary

Senior Frontend Engineer and UX Designer with over 20 years of experience building complex web applications. Focus on Next.js, React, TypeScript, real-time applications, UX design, and modern AI-powered products. Experience in e-commerce, public sector, motorsport, healthcare, and hands-on full-stack development.

Not just a frontend implementer, but a hands-on engineer with a UX background: strong in early product stages, complex workflows, architectural decisions, design systems, accessibility, and delivering modern web products into production.

Skills

Next.Js
React
Typescript
Frontend Architecture
Ux/Ui Design
Product Engineering
Realtime Apps
Accessibility
Ai Integration
Postgresql
Tailwind Css
Shadcn/Ui
Drizzle
Prisma
Supabase
Vercel Ai Sdk
Playwright
Better Auth
Product Perspective From Product Understanding And Ux To Production-Ready Implementation
Clean Components, Robust Tests, Modern Full-Stack Architectures
Scrum
Kanban
Pair Programming
Continuous Delivery
Ai & Healthcare
Realtime & Motorsport
Commerce & Public Sector
Angular
Svelte
Astro
Firebase
Firestore
Mongodb
Dynamodb
Storybook
Shopify Sdk
Figma
Sketch
Affinity Suite
Adobe Creative Suite

Languages

German

Native

English

Intermediate

Education

Oct 2003 - Jun 2011

Hamburg University of Applied Sciences

Dipl.-Ing. in Media Technology, specialization in Computer-Generated Media · Media Technology · Hamburg, Germany

Statistics

Experience

Total positions 10

Experience in Information Technology 16.5 y

Avg length 3 y 8 m

Longest experience 11 y 11 m

Expertise

Recent roles Founder / Fullstack Product Engineer / UX Designer, Frontend Architect / UX Designer, Senior Frontend Architect / UX Designer

Main industries Information Technology, Media and Entertainment, Retail

Main business areas Information Technology, Product Development, Marketing

Qualifications

Highest degree Bachelor

Profile

Created

June 2026

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Frequently asked questions

Have questions? Find more information here.

Where is David based?

David is based in Kassel, Germany and can operate in on-site, hybrid, and remote work models.

What languages does David speak?

David speaks the following languages: German (Native), English (Intermediate).

How many years of experience does David have?

David has at least 20 years of experience. During this time, David has worked in at least 8 different roles and for 10 different companies. The average length of individual experience is 2 years and 1 month. Note that David may not have shared all experience and actually has more experience.

What roles would David be best suited for?

Based on recent experience, David would be well-suited for roles such as: Founder / Fullstack Product Engineer / UX Designer, Frontend Architect / UX Designer, Senior Frontend Architect / UX Designer.

What is David's latest experience?

David's most recent position is Founder / Fullstack Product Engineer / UX Designer at Ondoko.

What companies has David worked for in recent years?

In recent years, David has worked for Ondoko, Paceteq, Symbiofy.ai, paceteq, and yoself.de.

Which industries is David most experienced in?

David is most experienced in industries like Information Technology, Media and Entertainment, and Retail. David also has some experience in Government and Administration, Pharmaceutical, and Sport.

Which business areas is David most experienced in?

David is most experienced in business areas like Information Technology, Product Development, and Marketing.

Which industries has David worked in recently?

David has recently worked in industries like Government and Administration, Information Technology, and Pharmaceutical.

Which business areas has David worked in recently?

David has recently worked in business areas like Information Technology and Product Development.

What is David's education?

David holds a Bachelor in Media Technology from Hamburg University of Applied Sciences.

What is the availability of David?

David is immediately available part-time for suitable projects.

What is the rate of David?

David's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.