Analysis01
Process & workflow mapping
Turn messy, informal workflows into clear process maps that reveal bottlenecks, handovers, and automation opportunities.
BPMNProcess designDiscovery
Hi, my name is
Stijn Nijhuis.I build pragmatic solutions for messy processes.
Bridging Business & IT: figuring out how a company really works, then implementing or building the software that makes it less chaotic. From ERP systems and data pipelines to simulations and custom internal tools; I care more about what it solves than how shiny it looks.
Working across NL / DE
01 • Background
Profile
From Business & IT to practical, technical solutions
I design and build tools that remove friction from real-world processes: translating business needs into clean, reliable software that people actually use.
Profile
My Background
After graduating in Business & IT at the University of Twente, I found my groove: building and implementing smart, pragmatic tools that actually improve how companies work. Less chaos. Fewer manual steps. More breathing room for the people who keep the business running.
I have a habit of picking apart messy processes, figuring out where the friction lives, and replacing it with something clean, automated, and reliable.
Focus
Two Languages
In the landscape of Business & IT, two worlds often clash: the strategic voice of business and the technical dialect of engineering. I sit squarely in the middle.
I translate business constraints into clear technical requirements, and technical limitations back into realistic business decisions. When off-the-shelf tools fall short, I design and build the missing pieces myself: data pipelines, simulations, workflow systems, and integration tooling.
More about me
Stijn Nijhuis
Business & IT
FocusProcess automation, data integration, and workflow optimization.
working onKiwiConnect, MijnMeeloopdag, Custom tooling
Common ToolingNext.js · TypeScript · Python · Tauri · PostgreSQL
Based inMünster (DE) • Enschede (NL)
Education
BSc Business & IT
University of TwenteMSc Business & IT (in progress)
University of TwenteMSc Information Systems (in progress)
University of MünsterMinor Energy Transition Perspectives
University of TwenteData Analysis Semester abroad
HSE MoscowCurrently into
LLM-powered toolingProcess automationEvent driven architecturesManufacturing databuilding SaaS
02 • Work
Projects
Selected client work & own products
A non-exhaustive showcase of the projects I have worked on: from production simulations and IFC tooling to full SaaS platforms and high-performance websites.
012023
Challenge
Work preparators spent several days manually extracting data from 3D IFC models into Excel sheets, as each of the elements had to be handled. This was time-consuming and very prone to error.
Additionally, the same steps had to be repeated for each project, further increasing the workload. There was also no time to fully integrate BIM processes into the workflow, which could take another 2+ years before that was feasible.
Solution
I've developed an easy-to-use Python tool which loads the IFC models, checks the data on completeness and correctness, and automatically extracts the required information into CSV files ready to be sent to the milling companies. This reduces the manual work from days of checking each IFC model to just a few minutes of running the tool.
This allowed the company to continue working on a plan to fully integrate the pipeline, without having to rush it due to immediate project needs. This tool also showcased the potential for further automation and optimization in the workflow.
Benefits
- Significant productivity gains
- Reduced human error
- Optimized workflow
Technologies
PythonIfcOpenshellPythonOCC-core
03 • What I do
Services
How I can help your business
I offer a range of services to help businesses streamline their operations and improve efficiency. Whether you need custom software development, process optimization, or data analysis, I have the skills and experience to deliver results.
Development02
Custom internal tools
Design and build lightweight tools that fit your team: from small utilities to full internal apps that replace spreadsheets.
Web appsDashboardsAutomation
Integration03
System integration
Connect the tools you already use so data flows automatically instead of being copied around by hand.
APIsSyncData pipelines
Data04
Data modeling & reporting
Structure your data so it can actually be used: consistent models, clean exports, and reports that answer real questions.
ModelingETLReporting
Exploration05
Prototyping & technical discovery
Validate ideas quickly with focused prototypes, so you know what's worth investing in before committing to a big build.
PrototypesMVPsTech choices
Optimization06
Simulation & optimization
Use simulations to explore different scenarios, spot constraints, and make better decisions about planning and capacity.
SimulationPlanningWhat-if
04 • Get in touch
Contact
Let's work together
Dealing with messy processes, outdated tools, or workflow chaos? This is where I help. If something feels slow, manual or fragile inside your company, it’s usually fixable with the right technical approach.
Direct message
Send me a message
Schedule
Prefer a quick call?
Schedule a short, free of charge 30-minute meeting to discuss your needs.
December 2025
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