We make software modernization work in the real world.
Eli5 is a software modernization consultancy. We help engineering leaders understand, plan, and execute system rebuilds that increase velocity, reduce complexity, and unlock AI.
Why we exist
Most software modernization projects fail — not because the technology is hard, but because the approach is wrong. Teams either try to do everything at once, or they patch the existing system until it collapses under its own weight.
We built Eli5 to do it differently. We work at the system level, not the code level. We sequence the work in phases. And we stay focused on what actually matters: getting teams moving faster with less risk.

Floris van der Veen
Co-founder & CTO
Led modernization programs for IKEA, ING, TotalEnergies, and 80+ other organizations. Architect with 15+ years rebuilding systems at scale.

Wesley Botman
Co-founder & CEO
Built and scaled engineering teams at multiple scale-ups. Focused on turning modernization strategy into measurable business outcomes.
Let's talk about your system
Tell us what you're working with and we'll help you figure out where to start.
hello@restacked.io