Hi, I'm Jesse. Your developer & consultant for websites, software products, and the systems around them, freelance and based in Berlin
Member of EA's Guardians collective network

Member of the Gesellschaft für Informatik (GI)
About me
After 10 years in corporate marketing, I left my 9-to-5 to build a startup in 2021. It didn't scale, but on the journey I enjoyed the intersection of business and technology. Now I work as a freelance developer & consultant. I keep building side-projects and explore emerging tech.
(Past) clients
Professional Services
I'm the developer & consultant you work with when you don't have a dedicated web engineering team. I take things from early concept through build, launch, and iteration, including websites and web tools, automations and integrations, plus tracking and measurement. One person end to end.
My services are:
Build & Launch
- Ship marketing sites, landing pages, and web tools, new builds or improving what you have
- Build automations and integrations that move data to your CRM, billing, and internal tools
- Make work launch-ready: Core Web Vitals, security basics, and SEO/AI-discovery hygiene
- Put measurement in place for the journeys you care about, with events and goals
- Pick the build mode that fits: no-code tools or agentic engineering with Claude Code
Maintenance & Optimization
- Do performance engineering: deep Core Web Vitals work for fast loads and top test scores
- Set up security monitoring against malicious bots, scanners, and common attack patterns
- Handle content updates and new pages: new sections and conversion-focused landing pages
- Do technical troubleshooting: fast diagnosis and fixes when something breaks
- Cut hosting and bandwidth costs with smart asset management and compression
Strategy & Consulting
- Figure out which tools and systems you actually need, and which just add cost
- Evaluate and set up marketing technology stacks your team can realistically maintain
- Guide the digitalization of manual processes, replacing spreadsheets and email chains
- Help your team work more effectively with modern tools, including AI-powered ones
- Set up tracking and analytics that help with data-backed decisions
Selected Client Work
2025/2026 · 3 mosDocsAutomator UG
Programmatic SEO research and development for a document automation SaaS, scaling their landing page output.
DevelopmentProgrammatic SEOSaaSGenAI
2025 · 2 mosAdvisorFinder LLC
Page speed optimization of the 20 most visited pages on a Webflow site, improving load times by over 50% on average.
WebflowPerformancePage SpeedWeb Vitals
2025 · 1 moOrdinary Folk Studio Inc.
Performance and bandwidth optimization for a creative studio's media-heavy portfolio website.
PerformanceBandwidthAsset Management
2026 · 1 moCool Classic Club B.V.
Performance and bandwidth optimization for a classic car club with a media-heavy collection website.
PerformanceBandwidthAsset Management
2024 · 6 mosA1 Asset One GmbH
Built a B2B website for a Berlin-based real estate asset manager, including a lead funnel for qualified leads.
WebflowFigmaLead GenerationCMSSEO
2026 · 1 moSachkundegurus(DEA GmbH)
Performance and page speed work on a client learning platform, cutting load times by over 50%.
PerformancePage SpeedWeb VitalsPythonAsset Management
2023 – 2025 · 2 yrsmute-labs GmbH
Took over the existing website for a maker of office phone booths as main developer, handling continuous development and maintenance.
DevelopmentMaintenanceMarTechCMSPerformanceLeads
2024 – 2025 · 1.5 yrshansetherm GmbH
Took over the existing website for a heat pump provider in Germany as main developer, handling continuous development and maintenance.
DevelopmentMaintenanceMarTechCMSPerformanceLeads
Selected Client Feedback
“Invaluable partner in building our new website”
Jesse has been an invaluable partner in building our new website from the ground up. Beyond creating a modern and reliable platform, he implemented smart tracking logics that allow us to understand our lead inflow, optimized conversion rates to boost results, and solved countless technical challenges along the way. His work has not only elevated our digital presence but also strengthened the foundation for our growth.

Leah von Maltzan
Head of Marketing, mute-labs GmbH
Click to read ↗
“Quick, straightforward, and practical implementation.”
Quick, straightforward, and practical implementation. Over a 50% improvement in PageSpeed. Thank you!

Gernot Schusser
CEO, Sachkundegurus (DEA 1 GmbH)
Click to read ↗
“Transparent, detail-oriented”
Jesse improved our Webflow website’s pagespeed performance by a massive 52% and helped us pass Googles’ Core Web Vitals on all our pages. His working style was transparent, detail-oriented, and he communicated via video calls, async videos for us to watch and slack messages, making the entire project flow very efficient from start to finish.

Rupert Hoffschmidt-McDonnell
CEO & Founder, DocsAutomator UG
Click to read ↗
“I'd work with him again in a heartbeat.”
Jesse was a total pro, thoughtful, communicative, and incredibly easy to work with. He brought calm and clarity to a fast-paced project, and his work was top-notch throughout. I'd work with him again in a heartbeat.

Stefan Green
Exec. Prod., Ordinary Folk Studio Inc.
Click to read ↗
“10/10 would recommend”
Within two weeks, Jesse optimized our top 20 most visited pages. Improving page speed load times by >50% on average. His approach to this project was extremely detail-oriented and organized. I particularly appreciated his proactive communication throughout the project. 10/10 would recommend to anyone looking to optimize their Webflow sites.

Drew Keever
CEO, AdvisorFinder LLC
Click to read ↗
“Who won't love it”
Jesse's Service has helped me to really acknowledge the need for a structured remote team interaction. The service gave us great new ideas and automatically triggered our own innovation to communicate differently. So the question is not "Who I think will love Jesse's Service" but rather "Who won't love it". I truly believe everyone would and will benefit from this nice and insightful collaboration. (Mareike Geier is now VP at AstraZeneca)

Mareike Geier
TA Head EMEA, Bayer AG
Click to read ↗
“Jesse moderates very well through the relevant points”
We are not a big team and yet many of our meetings take place without notes, team alliances and written to-dos. We talked a lot about the same things, and it wasted a lot of time. Jesse showed me a tool, which we are now implementing with his help. Jesse moderates very well through the relevant points and always keeps track of things.

Ina Börner
CEO, NO DIRTY TALK GmbH
Click to read ↗
My Projects

MarketingPatcher
Free AI/SEO/GEO audit tool that checks whether search engines and AI assistants can read and cite your site.
SvelteKitCloudflareD1PythonAI
PagePatcher
Analyze and improve your website's speed & performance. Scans your site and surfaces optimization opportunities.
Next.jsTypeScriptPythonSupabaseVercelStripe
Professional Development
After hours, I am pursuing a Master's in Media Informatics, a program tailored towards working professionals that allows me to study in addition to my work. This deepens my understanding of the different layers of technology.
Personal Interests
When I'm not on my laptop you can find me practising yoga, lifting weights at the gym, or doing indoor bouldering.