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Data & AI Professionals

How to launch and scale a six-figure freelance business

Join our global network of independent data experts and get the exact blueprint, mentorship, and accountability you need to start landing high-paying projects

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Loved by Data Professionals

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Client testimonials

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Kamia Salango

Data Scientist

I'm three months into the program and have already landed three contracts, thanks to Dave, the Datalumina team and the community. I am able to confidently pursue my dream of freelancing knowing I am part of this community! I highly recommend Data Freelancer if you are serious about your freelance career it is well worth the investment!

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Sander Korf

AI Engineer

I learned to handle the most important parts of true freelancing which in my opinion are customers, the marketing and sales to find customers and excellent delivery of services. And when I started to actually put it all into practice, I had an ROI within 4 weeks! I most definitely recommend Data Freelancer to you if you're into freelancing anything data related.

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Joseph Brown

Data Analyst

Dave is one of the experts in the data and AI field and has built a program that is world-class! Joining Data Freelancer marked the beginning of an exceptional journey in learning and professional development for me. Under the expert guidance of Dave, I not only crafted a powerful personal and professional brand but also mastered leveraging the use of various platforms to aid in my growth as a data freelancer.

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Anna Bansaghi

Software Engineer

I had the fortune of acquiring my first client through Data Freelancer. Additionally, Dave is very generous and shares possible client leads with the group. It’s really about having the bravery to go for these opportunities. The program is a great place for growth, and Dave's help is a big boost in this process!

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Yianni Mercer

Data Scientist

The transparency that Dave provides when explaining the freelancing process is unmatched. I loved how he dived into everything from client acquisition to the finance side of things. Additionally, the weekly Q&A call is an amazing feature of the program. It allows you to pick Dave's brain on anything from up and coming tech, to specific questions about starting your freelancing business. Overall, the program has been great and I highly recommend it to anyone who has been interested in setting up a freelance business.

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Kelsen Andrade

AI/ML Specialist

I am thankful for having come across Dave and Data Freelancer, it was one of the best investment decisions I've made in 2024. From effective ways to create inbound marketing strategies using social media, through solution architecture design to address all kinds of business challenges, you will extract a great deal of value from diverse perspectives and contributions of such a distinguished pool of talented people, each with their own unique background.

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Masatoshi Matsumiya

Software Engineer

Data Freelancer has exceeded my expectations in every regard. Following the strategies has paid off immensely, resulting in financial returns that far exceed the cost of the course. Having participated in several other courses, I can confidently say that Datalumina's program is outstanding. There's a high community success rate and the fact that Dave actively practices what he preaches adds a layer of authenticity and trust.

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Vajk Turi

ML Engineer

The Data Freelancer program offered by Datalumina is your one-stop destination for AI and data freelancing. After completing their content and program, I was equipped with all the knowledge needed to land my first client. At the end of the day, it's up to you to put in the work, but you'll find all the necessary resources and support here to become a successful freelancer!

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Sonny van Bergen

Data Analyst

The program helped me get an assignment year contract within twenty days by structuring my business and services in the most organized manner possible. Even with three years of entrepreneurial experience, Dave has provided me with a fresh perspective on setting up services and business processes.

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Sil Bouwman

Data Scientist

Within less than a year, my business has grown exponentially, and the ROI on my investment has been multiple times over. If you're looking to expand your network, knowledge, and business, I can't recommend Data Freelancer enough.

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Luuk Alleman

AI Engineer

Since starting with Data Freelancer, I've gained a lot of skills that are needed in data freelancing. I just started freelancing and already got my first project. A big thank you to Dave, who taught me how to be seen online, get clients and everything else needed to do well as a data freelancer :) The program taught me both simple and complex stuff and gives me loads of tools to finish projects faster!

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Jonas Cohrs

AI Engineer

Data Freelancer is a gem for any aspiring data freelancer. With hands-on guidance on challenges from client acquisition and sales to branding, it's a complete package. The community support and weekly calls offer unmatched accountability. I'm impressed with the high-quality content and the practical steps provided. Highly recommend.

Who this is for

This is for Data Engineers, Data Scientists, Data Analysts, or ML/AI professionals, feeling trapped in the corporate grind.

If you're tired of boring projects, unappreciated work, and endless company politics, it's time for a change. With freelancing, you call the shots, earn more, and can work on exciting projects that truly matter. You don't need to be a marketing guru or sales expert to make this happen — your technical expertise is the foundation, and we'll teach you everything else.


The best part? You can start this journey without risking your current job security. Our program is designed specifically for data professionals like you who are ready to break free from the 9-to-5 and create the freedom they’ve always wanted.

What is included

  • Learn how to set the proper foundations for your freelance business
  • Discover the best freelance model for your skills, goals, and lifestyle
  • Master your mindset and learn to think like an entrepreneur
  • Create a personal brand that attracts high-paying clients on autopilot
  • Build a high-converting portfolio, regardless of your project history
  • Build the art of closing 5-figure deals with proposals that clients can't ignore
  • Systemize client acquisition and never run out of clients, even if you hate "selling"
  • Protect your business with contract templates, saving thousands in legal fees
  • Extend contracts and generate referrals to snowball your business over time

Client interviews

Frequently Asked Questions

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