About
I build the part everything else depends on.
That usually means the calculation layer, the scheduling layer, or whatever holds the record that has to be correct. A.Tax runs an Excel-grade formula engine with an audit trail behind every number, and I advise on its architecture. PQ Layer maps every place a large organisation uses encryption and ranks what fails first. Quantify replaced a dozen spreadsheets with one bill of quantities. Calio turned a paper appointment diary into a booking page that keeps itself.
The through-line is the same in all four. Take numbers that were scattered and unaccountable, and make them one record you can audit.
- Role
- Founding engineer and technical advisor
- Based
- Tel Aviv, Israel
- Works
- Remote, worldwide
- Languages
- English, Hebrew
- Daily
- TypeScript, React, Node.js
- Also ships
- PostgreSQL, MongoDB, AWS
- Reply time
- One business day
An opinion
Slow is usually a symptom.
Most systems I am called into do not have a performance problem. They have an accountability problem that shows up as a performance problem. Somebody cannot tell you where a number came from, so nobody trusts it, so it gets recomputed everywhere, and then it is slow.
Fixing the record usually fixes the speed. Reaching for a cache first usually does not, and it buries the original problem under a second one.
Questions
- What does Ariel Gelberg work on?
- Systems of record: calculation engines, scheduling platforms and infrastructure inventories. Currently senior technical advisor to A.Tax, a multi-company tax and financial calculation platform, and a contributor to PQ Layer, an enterprise quantum-readiness platform. Quantify and Calio were built end to end.
- What kind of engagements does he take?
- Founding-engineer work on early-stage products, architecture and technical advisory for existing teams, and end-to-end builds where one person owning the whole system is faster than a team.
- Does he work with teams outside Israel?
- Yes. He is based in Tel Aviv and works remotely with teams worldwide, in English and Hebrew.
- How does an engagement start?
- With a thirty-minute intro call, at no charge, booked directly through this site.