BSc Human-Computer Interaction, University of Hamburg
2017 - 2021
Computer science with a focus on software engineering, interaction design, and hands-on product building across Unity and Android projects.
Curriculum vitae
Lennart Diedrichsen
Senior frontend engineer · product UI · founder
Senior frontend engineer focused on product UI, frontend architecture, and reliable delivery. I work best with teams that care about design quality and want clearer structure without adding noise.
Hamburg, Germany
Education
Training in Wholesale and Foreign Trade, altona Diagnostics GmbH
2013 - 2015
Commercial training that sharpened communication, organization, and client-facing reliability early on.
Work Experience
Senior Frontend Engineer, Protofy GmbH & Co. KG
2024 - Present
Lead frontend architecture and quality across agency product work, mentor junior developers, and continue to ship production UI in React and Flutter.
Frontend Engineer, Protofy GmbH & Co. KG
2021 - 2024
Built dynamic web applications and Flutter products, grew into higher-ownership delivery, and contributed to TDD and DDD practices in client work.
Working Student, Protofy GmbH & Co. KG
2020 - 2021
Supported product teams in delivery, improved ticket quality, and introduced technical SEO guidelines while building real product experience.
Student Assistant, altona Diagnostics GmbH
2017 - 2020
Worked on CMS systems and internal documentation while supporting employee training and structured technical communication.
Technical Writing / Marketing, altona Diagnostics GmbH
2015 - 2017
Maintained website and CMS workflows, supported trade-fair preparation, and built a foundation in clear, audience-aware communication.
Tech & Tools
- React, TypeScript, Next.js, Tailwind CSS
- Flutter, Dart, Riverpod, mobile product delivery
- Kirby CMS, Astro, static and content-led websites
- Design systems, accessibility, frontend architecture
Strengths
- Frontend architecture for product teams that are scaling UI quality
- Design-sensitive implementation that respects the visual system
- React and Flutter delivery across web and app products
- Mentoring and raising standards without adding unnecessary process
- Lightweight landing pages, booking flows, and confirmation-email setups
Selected Product & Web Work
Avara
Founder-led product for movement teachers: schedule-driven public pages, workshops, retreats, and teacher workflows shaped through daily dogfooding.
Next.js · Supabase · Product design · Teaching infrastructure
Ludivine Gragy studio website
Development-only Kirby CMS build for a landscape architecture portfolio, translating supplied design direction into responsive HTML/PHP templates and editable content structures.
Kirby CMS · HTML/PHP · Responsive frontend
Essential Mind
Minimal slide-based website for a psychotherapy and mental-health network, built as a calm first version before the project grows into a fuller content site.
Minimal website · Responsive frontend · Mental health
Agency product delivery
Senior frontend work on dynamic web applications and Flutter apps, including consumer-facing commerce UI at multi-million-user scale.
Flutter · React · Anonymized client work
Full Bloom Jivamukti Retreat
Design and development for a yoga-retreat landing page with an image-led story, clear registration path, contact form, and automated email handling.
Landing page · Forms · Email automation
Interests
Climbing, Jivamukti yoga, teaching, hiking, design concepts, and nonfiction.