Henri K.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Duda Certified (Platform Specialist + Developer) — the go-to developer for Duda agencies. 7,000+ hours and 110+ projects on Upwork, I help agencies deliver what Duda can't do out of the box: custom widgets, white-label platform builds, dynamic pages, and API integrations their clients can't get anywhere else. 𝗪𝗵𝗮𝘁 𝗜 𝗱𝗼 𝗯𝗲𝘀𝘁 • 𝗖𝘂𝘀𝘁𝗼𝗺 𝗪𝗶𝗱𝗴𝗲𝘁𝘀 & 𝗖𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁𝘀 — filters, dynamic content blocks, sliders, advanced forms, and API-powered features built natively on any visual platform. This is where I spend most of my time, and where clients get the most value. • 𝗪𝗵𝗶𝘁𝗲-𝗟𝗮𝗯𝗲𝗹 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗖𝘂𝘀𝘁𝗼𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 — custom templates, DIY flows, instant website creation, template galleries, and upsell/publishing automation for SaaS companies and agencies reselling Duda under their own brand. • 𝗗𝘆𝗻𝗮𝗺𝗶𝗰 𝗣𝗮𝗴𝗲𝘀 & 𝗖𝗼𝗹𝗹𝗲𝗰𝘁𝗶𝗼𝗻𝘀 — structured content systems that auto-generate pages from a collection — directories, portfolios, product catalogs, and any data-driven layout built natively on Duda. • 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗠𝗶𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 — WordPress → Duda, Wix → Webflow, or any combination. Full SEO preservation: 301 redirects, metadata, schema markup. Zero ranking loss. • 𝗠𝗼𝗰𝗸𝘂𝗽 → 𝗟𝗶𝘃𝗲 𝗦𝗶𝘁𝗲 — pixel-accurate implementation from Figma, PSD, XD, Sketch, or Canva into any visual builder. • 𝗡𝗲𝘄 𝗕𝘂𝗶𝗹𝗱𝘀 & 𝗥𝗲𝗱𝗲𝘀𝗶𝗴𝗻𝘀 — landing pages and multi-page sites optimized for Core Web Vitals, accessibility (WCAG 2.1), and long-term maintainability. • 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 — Klaviyo email flows, CRM connections, marketing automation, and custom API setups. 𝗧𝗲𝗰𝗵 𝗜 𝘂𝘀𝗲 HTML5 · CSS3 · JavaScript · jQuery · Handlebars · REST APIs · Klaviyo · Duda dmAPI 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸 — Clear scope, milestones, and acceptance criteria before any work starts — Available across US & EU time zones — Every delivery includes a short video walkthrough + documentation — you own everything — Fixed-price or hourly, whatever fits your project 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗰𝗼𝗺𝗲 𝗯𝗮𝗰𝗸 Most of my work comes from repeat clients — agencies scaling their Duda operations, SaaS teams building white-label features, and businesses that started with one migration and stayed for ongoing development. I treat every project like a long-term relationship, not a one-off gig. → Share your goals, pages/features, and references. I'll propose a clear scope, timeline, and plan.