Understand the business
The trade, the need, the real question behind the request. Twenty years of consulting, from pharma to energy, steel and cement, taught me to ask the right questions before writing a line.
Belenox · Cast a new light
Bringing to light
what does not exist yet.
I'm Cédric Druck, an applied mathematics engineer (optimisation, operations research). Over twenty years building the forecasting software clinical trial supply teams plan with; today I lead Trialzen, and with AI I build new software of any kind, fast.
My main activity is Trialzen, which I co-founded and lead as CEO. Trialzen builds clinical trial supply forecasting and optimisation software: how much drug to make, pack and ship, to which depots and sites, and when. Clinical trial supply is my deepest field: it is what Trialzen does. Belenox is the company through which I do the rest of my work.
- RoleCo-founder and CEO, since 2021
- FieldClinical trial supply forecasting and optimisation
- Sitetrialzen.com
- 21 years
- building software products, since 2005
- ×3
- growth of N-SIDE's pharmaceutical practice in four years
- 1 year
- to build a complete RTSM product at 4G Clinical, from a sketch on a napkin
- 25+
- engineers in the team I helped build at 4G Clinical
How I work
A consultant who builds: mathematics and engineering, from your need to a solution that goes beyond it.
Design the architecture
Model the problem honestly, with its constraints and its uncertainty, then design a solution that still holds when the volumes or the rules change.
Build beyond the brief
The best technology for the problem, not the most familiar one, and AI to go faster and further. The aim is to impress you, not to tick a box.
Validate and look after it
Test, measure, correct, all the way. I am a perfectionist: a problem is solved only when it is solved completely, and it stays solved.
Applied AI
Anything you need built, built fast.
AI agents and tools that do real work, on solid engineering foundations. Twenty years of method decide what to build; AI makes it fast. Four products built this way:
Lighten, for Mayanfa
For Mayanfa · iPhone and Android
As CTO, I designed and built the app end to end.
Mirmex Motor
For Mirmex Motor · motor design
A legacy Python engineering tool rebuilt as a modern web application.
Prancer, at 4G Clinical
For 4G Clinical · one year
A complete RTSM product in one year, from a sketch on a napkin.
Belenox Site Studio
For independents and small businesses
Websites for independents and small businesses, compared with the current site and read by a person before anything is published: this site among them.
On stage
Recent talks and workshops
- · Online · Upcoming
ISPE webinar, Benchmarking and Shared Learning (AI Part 5)
Talk: “How to Use Agentic AI to Build Real Clinical Supply Tools”
Abstract on trialzen.com 
GCSG European Knowledge Forum 2026
Co-chaired two AI boot camps, Foundational and Advanced AI, with Bryan Clayton
Abstract on trialzen.com- · San Diego
GCSG US Conference 2026
Workshops on advanced analytics and predictive tools for clinical supply planning
Abstract on trialzen.com
About
Cédric Druck
I have worn every hat a young company needs: developer, architect, project and product manager, support, sales, marketing, team lead and executive.
I set a high bar for my own work. When I take on a problem, I go deep, and I do not stop until it is solved all the way.
And I never stop learning. Right now that curiosity has a name: AI, which I explore day and night. It has pushed my creativity further than anything before, and I speak about it regularly at conferences.
Career
- 2026 to todayMayanfa
CTO. Designed and built the Lighten app end to end.
- 2021 to today
TrialzenCo-founder and CEO. Clinical trial supply forecasting and optimisation software.
- 2019 to 2020Mirmex Motor
Senior software architect and engineer. Rebuilt the motor design software as a modern web application.
- 2015 to 20194G Clinical
VP Engineering, then VP Forecasting. Joined before day one; built the Prancer RTSM and the 4C planning product.
- 2014 to 2015
IDDIProduct and project manager. Led the revamp of the company's IWRS.
- 2005 to 2014
N-SIDEFrom consultant to head of the pharmaceutical practice. Optimisation for pharma, energy, steel and cement; grew CT-FAST into a leading clinical supply simulation tool.
- Since 2014Belenox
My own company: consulting, software and new ventures.
Engineer in applied mathematics and computer science, UCLouvain (2005).
Recommendations
What clients and colleagues say
“Cédric takes a sincere interest in his work and in producing the highest quality output for the business.”
Mitch HorohoClinical Trial Supplies Management, Eli Lilly and Company“As a brilliant architect and an efficient top-notch programmer, Cedric Druck re-engineered a legacy Python application into a modern engineering software tool that will be hard for our competitors to match.”
Cedric Van RossumCEO, Mirmex Motor“Ced can quickly understand the business needs and come up with the most appropriated technical solutions. In his work, Ced is innovative, thorough and passionate.”
Jean van der VaerenDirector of Software Engineering, 4G Clinical“He is a smart person with good business acumen, a hard worker, efficient, reliable and with excellent communication skills.”
Benoit DavidN-SIDE“Cédric is very efficient, solution-focused, and very great to work with!”
François BaudartCTO, Mirmex MotorQuestions
In short
Who is Cédric Druck?
An applied mathematics engineer (UCLouvain, 2005) specialised in optimisation and operations research. For twenty years he has built clinical trial supply forecasting and simulation software, at N-SIDE, 4G Clinical and Trialzen, which he co-founded and leads as CEO. He founded Belenox in 2014.
What does Belenox do?
Belenox SRL is Cédric Druck's company, based in Lasne, Belgium: new software products, optimisation and applied AI, for clients or as its own ventures, such as Belenox Site Studio.
How do Belenox and Trialzen relate?
Trialzen is Cédric Druck's main activity: he co-founded it in 2021 and leads it as CEO. Clinical trial supply is what Trialzen does; Belenox is the company through which he does the rest of his work.
Can Belenox build software for my company?
Yes. Describe the problem in a few lines through the contact form or at cedric.druck@belenox.be.
Where is Belenox based?
In Lasne, in Walloon Brabant, Belgium. Cédric Druck works with clients worldwide.
Something new to build, or a hard problem to solve?
A few lines are enough to start.