I build where creativity,
business and AI meet.

From lead-gen automation to AI content pilots and branding: I turn new technology into something people actually use.

- Lennar, Utrecht.

Contact directly

lenffect@outlook.com

I reply within one working day.

Me sitting at a table in a marina
Hi, this is me! (Besides building things, I love sailing. Here I am in a marina in Croatia.)

AI and automation

Systems and tools I build with Python, Visual Studio Code and AI, so work does itself.

AI-driven outreach system

500+ people approached personally, with follow-up and data handling, fully automated.

Python-based system that scrapes and qualifies leads, sends personalised first emails and follow-ups through a Proton Bridge connection and processes and tracks all data in JSON and Excel. Claude writes and refines the logic and personalises the outreach copy. As soon as someone replies, the system hands the conversation over to me automatically.

  • Python
  • Claude
  • Visual Studio Code
  • Proton Bridge
  • JSON
  • Excel
Python code of the outreach system: the email template on the left and the scraper that finds email addresses on websites on the right

Result

500+ people contacted

AI content pilots for brands

Reusable, scalable and quick to test at low cost.

Pilots with AI-generated content in AI suites like Freepik/Magnific and Fal.ai, for several clients, from concept to generated visuals. With careful prompting and a fixed design system the style stays consistent, even when you scale up.

  • Freepik/Magnific
  • Fal.ai
  • Prompting
  • Designsysteem
  • Consistentie
Workflow canvas with AI-generated lifestyle images and product shots of a children's eyewear frame, with the prompts behind them

Result

Several client pilots and one paying client

Campaign analysis scripts

Automatic insight into what works and what doesn't.

Self-built scripts that analyse Meta campaign data and help optimise and adjust running ads, so I can act and optimise faster than I could by hand.

  • Python
  • Meta Ads data
  • Claude

Result

Faster, data-driven optimisation

Own finance dashboard

An overview of my own business, built myself.

A self-built dashboard to keep the finances of my own businesses in one clear place, instead of loose spreadsheets.

  • Python
  • Low-code
  • Eigen data

Status

In use

Marketing and design

Brands, campaigns and websites: from identity to measurable growth.

Crowdfunding and app downloads

Crowdfunding oversubscribed at 110% and downloads boosted.

Through Fluid Marketing I help an app startup grow. Part of that was a crowdfunding round, which ended up oversubscribed at 110%, and on top of that the number of app downloads: the main goal of every campaign. With each campaign we optimise further, so we keep reaching that goal. I also did the visual design for the animation, as part of a rebrand that is in the making.

  • Meta Ads
  • Campagneoptimalisatie
  • Visual design
Google Analytics for the last month: 12k active users (+169%) and 16k sessions (+205%)

Result

Crowdfunding oversubscribed at 110%, 2,000+ downloads and a reach of 250k people in recent months

Design system for an advisory firm, in progress

Current project, still in development.

A design system (house style, visual identity, logos, etc.) that I am building for an advisory firm right now. I use this project to teach myself design in Figma, for the most part.

  • Designsysteem
  • Figma
  • SVG
  • Design
Deliberately blurred brand board from a design system: colours, typeface and logo explanation

Status

In development

Ongoing social media campaign management

Daily growth for several brands at once.

I currently manage the campaigns of several clients across different sectors (real estate, a design agency and a healthcare company) on an ongoing basis, and will soon start new engagements.

  • Meta Ads
  • Google Ads
  • LinkedIn Ads
  • Analytics

Status

Ongoing

Websites

From concept to launch, built myself.

Several websites, apps and dashboards built for my own projects and clients with Claude Code, hosted on Netlify, for example, or another hosting provider, to get from concept to a working result fast.

  • Claude Code
  • Netlify
  • Hosting

Status

Several live

View example

More examples on request. Ask me

About me

Hi, I'm Lennar

I've spent my whole career moving between creativity, business and technology. I started in film, VFX and motion design, then studied Commercial Economics and did a master's in Entrepreneurship. These past few years I've combined all of that and use AI for real workflows, for myself as a freelancer and at Fluid Marketing. I'm not a specialist in one thing, but I know enough about a lot of things to do them well. For you, that means one point of contact instead of five.

Got a minute? Read the full story

I'm Lennar, and I've spent my whole career moving between creativity, business and technology. I started out in film and motion design/VFX, with courses and training in London, South Africa and Berlin, working with programs like Premiere Pro, Lightroom, After Effects and Cinema 4D. It was also there, during my first freelance jobs, that I came into contact with entrepreneurship and the business side of tech rather than the creative side. Because of those first entrepreneurial steps I decided to change course. Through a bachelor's in Commercial Economics in Rotterdam and a master's in Entrepreneurship in Amsterdam (VU/UvA), my interest shifted to the business side of technology: how data and automation make decisions smarter and more efficient.

These threads come together in my own work as a freelancer with Lenffect and Fluid Marketing, where I use AI every day to automate real workflows and to learn, from lead generation to analysing campaigns. I'm not a trained programmer, but I'm always curious, pick up new technology quickly, start building and experimenting right away, and can explain clearly what it does. I prefer to learn by doing: lately I taught myself Figma, for example, and I'm now building my first simple design system.

I get energy from learning new things, experimenting and trying things out right away. I'm always looking for the combination of creativity, data and AI to build things people actually use, and I like working with people who want to put something out there. To be honest, I'm not a specialist in one thing. But I know enough about a lot of things to do them well: marketing, automation, (website) design and photography and videography.

For you, that means one point of contact instead of five. I think along, pick it up and keep you posted. People often tell me it's simply nice to work with me, and I do my best to keep it that way.

What I can help you with

Marketing
Social media, Content planning, Email marketing, Automatic emails and follow-ups, AI for content
Websites & tools
Websites, Web shops, Smart tools, Automating routine work
Visuals
Photography, Videography, Video editing
Business
Strategy, Product development, Project management

Let's get acquainted

Got an idea, a question, or just want to talk something through? Send me a message. An introduction is always free and without obligation.

I reply within one working day.

Prefer a short questionnaire? Two questions, then leave your details.

1 / 3

What is it about?