How Seneqa can help you

Seneqa is the name of the freelance IT business of Niek de Greef.

Niek is a very experienced IT professional who combines technical, communication, and organizational skills. Niek has worked for many different commercial and public organizations, on a variety of challenges.

Feel free to contact Niek by phone at +31(0) 6 2436 1598 or through email at

Typical services Niek provides are listed below, but not limited to this list.

Architecture roadmap definition and realization

Starting with your business priorities Seneqa helps you develop, prioritize, and realize an IT roadmap.

To ensure long term vitality of your IT plans, we can help you with our experience in setting up a control point in your IT organization.

Innovation with existing applications

We help you overcome limitations in existing applications.

Existing backend systems are often inhibitors of innovations in your organization. We have experience overcoming these barriers by designing a renovation solution for your legacy applications.

Architecture review

Not sure about the solution architecture? Doubts about cost, feasibility, technology, skills?

We can review the solution architecture and provide advice on key aspects.

Solution architecture and realization

Seneqa can help you develop an IT solution.

We define and best practice approach for solution architecture and realisation, and often adopt an organization’s own project and architecture methods. Typically we lead the technical team during the architecture and realization of the solution, bringing together business, application and infrastructure architects and specialists.

Architecture workshop

Running an Architecture Workshop aims to accelerate the evaluation and improvement of solution architecture. In the workshop, we identify the most critical business goals. We will develop and improve alternative solution architectures and evaluate these based on expected costs, benefits, and risks.

At the end of the workshop, the solution architecture options are documented with their business and technical trade-offs to facilitate informed business and implementation decisions.

Niches: integration and mainframe

Seneqa builds on a few niches in which we have extensive years of experience.

  • Integration. Green-field application developments are infrequent opportunities. Instead, application integration that leverages and enhances existing backend systems is a crucial success factor for most development projects. Furthermore, organizations are increasingly using hosted solutions in their IT landscape. We have helped clients with the integration of cloud solutions and their internally managed applications.
  • Mainframe. Many organizations are – still, if you like, relying on the mainframe as their core industrial-strength transaction and data server. Our experience planning, upgrading, extending, and integrating such factory-type application infrastructures has helped many organizations build a future-proof foundation for their business.

Niches: WordPress sites, PHP and Python programming

What started as a hobby became part of Niek’s business: setting up, maintaining and hosting WordPress websites, PHP programming, and Python programming.

Seneqa has built many websites, from very simple (like this one, deliberately) to more complex sites, including programming of plugins in PHP.

Business Partners

We work closely with selected business partners that augment our capabilities.