What We Do
We help organizations modernize and maintain critical software systems—tax, HR, document management, and more.
We design and implement business software according to your wishes and needs.
We help you detect where automation could provide more value for your company.
Our team specializes in Visual FoxPro, PowerBuilder, .NET (C#/VB), SQL Server, and Office automation.
Who We Work With
- Government agencies (Tax Offices, Customs)
- Law firms and debt collection bureaus
- Private companies in Curaçao, Bonaire, Sint Maarten, and the Netherlands
- 50+ long-term clients, including Big 4 firms
What We Have Built
- E-Tax: a tax return application to file Income Tax and Profit Tax returns
- A Time Attendance system with fingerprint recognition and smartcard identification
- A Debt Collection application
- A Human Resources application
- A Tools & Materials tracking system
- A Repairshop system tracking repairs and generating invoices
- Several other administrative applications for small and larger companies
Services Offered
- Legacy system maintenance and modernization
- Web application development (.NET, MVC, Blazor, MAUI)
- SQL Server development and automation
- Excel and Office integration
- Course development and tech education
Smart, Secure Time Tracking for Your Team
Our time attendance system makes clocking in and out effortless and reliable. Employees use a smartcard and fingerprint for secure registration, while all work hours are automatically logged. Missed entries? No problem - administrators can easily adjust or insert times when needed.
View attendance per day or across any custom timespan. And when it’s time for payroll, export clean Excel reports weekly, biweekly (quinsena), or monthly - ready to import directly into your payroll system.
Simple. Secure. Payroll-ready.
Track Your Tools with Confidence
Our tool tracking system makes it easy to manage equipment in the field. Administrators check tools in and out using an Android app, scanning the employee's smartcard and the tool’s QR code for instant registration. You’ll always know who’s using what, where it’s being used, and whether it’s in good working order.
No more lost tools or guesswork - just clean, reliable data you can trust.
Smartcards. QR codes. Full accountability.
Smarter Inventory, Right from Your Phone
Our inventory tracking system keeps your stock organized and accountable. Using an Android app, administrators scan the employees smartcard and the item’s QR code to register movement - whether it’s incoming, outgoing, or relocated. The system tracks quantities in real time and alerts you instantly when minimum stock levels are reached.
No more guesswork, no more shortages — just clean, mobile-first inventory control.
Smartcards. QR codes. Real-time stock overview.
"Having worked with Joost I can honestly say that his dedication, knowledge and skills have benefitted our organization. Joost is a nice person who delivers his projects on time and without any hick-ups. I recommend working with Joost Stolk."
Marco Langhorst
Business Information Systems Director, Tax Office Bonaire
"Joost did a great job on the project we worked on. He is a hard worker, and a fast learner. He communicates well with the customer and he's always willing to go the extra mile."
Boudewijn Redeker
Senior Project Manager, UK
"We got in touch with Joost Stolk from Yuana Consulting through an IT professional. After a few initial conversations, it quickly became clear that Joost is a reliable IT specialist. He soon started working on our R&M project, which has since evolved into a fully-fledged POS application. Whenever we have questions or need out-of-the-box thinking, we can always turn to Joost. He’s exactly the person we need to perfect the system. Definitely recommended for business applications."
Ron Douma
Owner Douma Naaimachines, NL
"Yuana Consulting has been web hosting our website for some years now. Joost has always been helpful in sharing his knowledge, and offers solutions that work for our company and clients. We highly recommend Yuana's Consulting services for any of your IT needs."
Roxane Wolff
Salesperson, Renault Curaçao
"Thank you for being flexible and for the many years of adequate and gratuitous support of our HR application."
Jodiane Doran
HR Administrator, Selikor, Curaçao
"Joost is a skilled and dedicated no-nonsense IT professional. His work is always completed in the agreed time span and with the desired results. We at Capaz Consulting will continue to make use of the services of Joost Stolk and we can recommend anyone who is seeking a good IT professional to contact Joost."
Robbin Martina
Managing Director EWT, Curaçao
"Joost is an entrepreneur, a rare combination. He has many years of experience with tax software and has a big footprint in this domain. He is also very responsible in business and a reasonable person. Joost is constantly updating his knowledge, which is something I admire a lot."
Juwel Cecilia
Founder and Owner of LeanCuraçao
"This recommendation is somewhat tainted, because I know the owner, Joost Stolk, over twenty years. We worked together in the early 2000s and I know he is a very capable software developer, who has vast experience in making software for the tax department and taxpayers. As James & Associates we have been using his tax declaration software for service providers (E-tax) since 2005. Since about three years we have hired Yuana Consulting as our developer, who now maintains our self-developed payroll system and document management system and is busy connecting all systems into a connected ecosystem that supports our internal processes and communicates with our clients. We are very happy with the services provided by Yuana Consulting, because Joost takes his time to properly digest and understand our needs. He then makes suggestions and once we agree, he designs exactly what is asked of him, all within the agreed upon time and budget. Finally, he is always available for urgent issues. It’s like having an in-house developer. We are happy with Yuana Consulting."
Jean James
James & Associates, Sint Maarten
Not only do we develop business software and consult on how to get the most value out of your software, we also have developed a number of courses. Based on our 25+ years of experience, we feel confident we put together some comprehensive packages, starting at the absolute beginning, so no previous experience is required.
If you want to know more, just contact us at Whatsapp +5999-5644453.
Excel Basics
Master the tools that drive smart decision-making. This course covers formulas, tables, data visualization, and time-saving tips for everyday tasks. Ideal for professionals, students, and anyone who wants to work smarter with spreadsheets.
Website Programming Fundamentals
Learn to think like a developer. This hands-on course introduces core programming concepts, clean code practices, and real-world problem solving. We explore HTML, CSS, JavaScript, and more - always with a focus on clarity, maintainability, and reuse.