Custom software, GIS and data platforms on open standards
We build on open standards and agree up front how you carry on without us.
TechinFlow B.V. develops custom software, GIS and map applications and data platforms, with a focus on government bodies.
About TechinFlow
What TechinFlow builds, and for whom
It is a new Haarlem company founded by Tekin Uslu, who by his own account has worked on geo-information, data engineering and IT architecture since 2006.
TechinFlow builds software that works with location and data. Examples: a map viewer in which a municipality shows its own layers next to national base registrations, a portal on which an organisation publishes datasets, or an integration that collects data from several systems, checks it and prepares it for analysis. The work falls into three layers: the application people use, the map and geodata behind it, and the data platforms and infrastructure that keep everything running.
The focus is on small and medium-sized Dutch government bodies and on organisations with a public task or a lot of spatial data. The same questions tend to come up there. How do you use government open data without maintaining everything yourself? How do you meet requirements for transparency, accessibility and information security? And how do you stop one supplier from deciding what can be done with your data?
A second track is custom software for other organisations, for example an internal web application or a data platform for reporting. The same principles apply: open formats, documentation and a codebase you can hand over.
You can read who is behind TechinFlow and how the company works on the about page and on the profile of founder Tekin Uslu.
What we do
The services at a glance
TechinFlow offers fifteen services in three groups: building software, maps and geodata, and data and infrastructure. They fit together, but you can buy each one on its own. The eight below have an English page; the services overview also lists the seven described in Dutch only.
If you work for a Dutch municipality, start with the page on software for municipalities (in Dutch). It sets out the frameworks that apply to municipalities, such as Common Ground, the Open Government Act (Wet open overheid) and digital accessibility, with links to the sources.
Principles
Open standards, open source and exit requirements agreed up front
Software for a public organisation has to outlast the contract with the builder. That is why we work to three fixed principles.
- Open standards. Map data is exchanged through the standards the Dutch government itself uses, such as WMS, WFS and OGC APIs, with coordinates in the Dutch national grid (Rijksdriehoekstelsel, RD) or WGS84. We publish data in open, machine-readable formats with metadata, so any other system can read it.
- Open source where possible. We prefer to build on existing open source components for maps, databases and data portals rather than on a closed platform with per-user licences. Where a closed product fits better, for instance because it already runs in your organisation, we say so and connect to it.
- Exit requirements up front. At the start of an assignment we agree what you receive if the collaboration ends: the source code, the configuration, an export of the data in open formats and documentation that lets another party take over maintenance. This goes into the contract, not into a handover meeting at the end.
These points also feature in the requirements for a GIS viewer tender (in Dutch), which you can use independently of us.
Knowledge and tools you can use without hiring us
Part of this site exists so that you can get further on your own, even if you never hire us. The English guide to Dutch open data explains the national registers that most applications need, such as the BAG addresses and buildings register, the BGT large-scale topographic map and the cadastral map, with tested API calls for each.
The overview of Dutch open geodata and PDOK shows how to use the Dutch government's geodata through PDOK services in your own application, with working examples and the pitfalls you only meet once you build with it.
The RD to WGS84 converter turns coordinates in the Dutch national grid (Rijksdriehoekstelsel) into latitude and longitude, for example to show an address from a Dutch register on a web map. The page also explains how accurate the conversion is and where its limits lie.
The knowledge base (in Dutch) adds guides for questions that keep coming up at municipalities: publishing open data, choosing a GIS viewer, writing tender requirements and deciding between CKAN and an alternative.
All texts were drafted with AI tools. Facts and code examples have been checked against the cited sources on the stated date. The texts have not yet been reviewed for content by Tekin Uslu. Please report errors to info@techinflow.nl. The colophon (in Dutch) explains how this works.
At a glance
Frequently asked questions
What exactly does TechinFlow do?
TechinFlow develops custom software, GIS and map applications and data platforms, with a focus on government bodies and organisations. That means software that works with location and data, such as map viewers, open data portals and integrations between systems. We also advise on technology choices and architecture. See the services overview.
What do you mean by exit requirements?
Exit requirements are agreements about what you receive when the collaboration ends: source code, configuration, an export of the data in open formats and documentation that lets another party take over maintenance. We propose fixing them at the start of an assignment, so you do not depend on TechinFlow to keep using your own software and data.
Can TechinFlow provide references for a tender?
TechinFlow is a new company. Projects the founder carried out before TechinFlow are not references of TechinFlow B.V. Once TechinFlow has completed assignments of its own, we will share references in a tender on request and with the client's permission. For that reason this site shows no client logos or client names. You can read more on the about page.
Do you only work for municipalities?
No. The focus is on government bodies and organisations with a lot of spatial or open data, but we also build custom software and data platforms for other organisations. The principles stay the same: open standards, open source where possible and exit requirements agreed up front. Municipalities have a separate page, software for municipalities (in Dutch).
Related
Get in touch
What to expect from a first contact
A first conversation is about your question, not about a product. You tell us what runs today, which data you have and where the problems are. We say whether TechinFlow is the right party and which approach we would choose. If an off-the-shelf package or another supplier fits better, we tell you.
If you want, a proposal follows with a clearly bounded scope, the technology we would use and the exit arrangements. If you are preparing a public tender, we take the rules on prior involvement into account: whatever you receive from us must be shareable with all bidders.
On references, we are upfront. TechinFlow is a new company. Projects the founder carried out before TechinFlow are not references of TechinFlow B.V. Once TechinFlow has completed assignments of its own, we will share references in a tender on request and with the client's permission.
You can reach us through the contact page. Briefly describe your question and the organisation it is for, and we will reply by e-mail.
Prefer email? Write to info@techinflow.nl