Summary

Hendrik is a full-stack developer and technical consultant with 10+ years of experience, based in the Netherlands. He began his career as a part-time web developer in Utrecht, then co-founded two Berlin-based ventures — Shopboostr (a funded e-commerce ML startup, EXIST program, award-winning) and Karyan Daze (a 15-person dev agency delivering 30+ client projects). Since 2017 he has run an independent practice serving 60+ clients across the DACH region and France, with a current focus on AI infrastructure (RAG pipelines, agent orchestration, LangChain, pydantic AI), cloud hosting, and MVP consulting. He holds a Bachelor's and MBA from the University of Amsterdam

🛠 Professional experience

Mar 17 - Present

Freelance Web Developer

Berlin, DE 🇩🇪

  • Developing scalable web applications for 60+ clients across Germany, Austria, France and Switzerland — supporting startups through funding rounds, scaling phases, and building internal tooling including automation workflows and custom CRMs.
  • Building AI infrastructures for RAG & agent orchestration (LangChain, vector db’s, pydantic AI), and generative AI.
  • Managing hosting infrastructures for clients ( on AWS, Azure, DigitalOcean ).
  • Leading and building tech teams from scratch for startups and SME’s.
  • Maintaining a good, long term relationship with clients.
  • Consulting clients on MVP building, architecture and infrastructure.

May 2016 - Feb 2018

Karyan Daze - Dev Agency

Berlin, DE 🇩🇪

Director & Co-founder

  • Led a team of 15 developers, project managers, & designers to develop mobile applications and web applications.
  • Within 2 years: finalised 3+ mobile apps that were launched on play store & app store. Handled over 30 client projects (E-Commerce, Web applications, Mobile apps, Websites) in a variety of technologies (AngularJS, Ruby on Rails, Swift, Wordpress)
  • Key role in planning to ensure personnel capacities, deadlines, and overall choice of stack and infrastructure.
  • Also responsible for all finance, HR, client communication, and marketing.

Nov 2014 - May 2016

Shopboostr GmbH

Berlin, DE 🇩🇪

CTO & Cofounder

  • Developed the first MVP & launched a final version of our recommendation system for e-commerce, consisting of and API layer, custom JS libraries for tracking, and machine learning models in python.
  • Maintained and continuously developed the application in Ruby and Python and also scaled the infrastructure to handle the traffic on the application.
  • Developed best practices in coding, creating documentation and handling client support.
  • Created a motivational work environment for the team - directly managed and hired a group of 7 developers.
  • We won 2th place in the Business Plan Berlin Brandenburg startup competition and several other awards and we were part of the EXIST funding program.

Dec 2013 - Dec 2014

Freelance Developer

Amsterdam, NL 🇳🇱

  • Working on a variety of projects for startups & SMEs, mainly surrounding PHP and Javascript applications
  • Consulting SME’s on the interface of marketing and development

Sept, 2012 - May 2013

Rosier Web Design Studio

Utrecht, NL 🇳🇱

Part time Web Developer       

  • Maintenance work on existing client’s platforms
  • Building internal platforms, including several high profile projects for a major dutch bank, an architecture company, and a new mentoring platforms for university alumni students in the Netherlands.

2008-2013

Finished a bachelor in Business & Economics at the UVA Finished a master in Business Administration at the UVA. GPA 7.8