About Dor Kalev
Senior technical depth.
Still hands-on.
I’m an engineer and builder based in Israel. For 22 years, I’ve taken software from the first line of code to production—across startups, growing businesses, and platforms operating at scale.
The short version
I build because I like making complicated things work simply.
The last decade has focused on AI: first an NLP parser company, then generative-AI and agentic systems. Today my work spans LLM agents, data infrastructure, cloud platforms, and the practical engineering habits that make software dependable.
Leadership experience made me a better builder; it is not a substitute for building. I enjoy being close to the real problem, making the technical calls, and shipping the work.
Career
- 2025 — present
AI Engineering, R&D Lead · BoltX
Built scalable backend data infrastructure on GCP with Terraform, plus LLM-powered agents and delivery automation for a Physical AI company.
- 2025
Co-Founder & CTO · a.tax
Designed and built an agentic tax-accounting platform end to end, with LLM workflows and retrieval over tax regulations.
- 2023 — 2025
VP Engineering & Innovation · Labguru (BioData)
Built a generative-AI editor, app platform, BI dashboards, low-code automation, developer tooling, and secure data-querying systems.
- 2018 — 2023
Independent Engineer · TwentyOne (21tech)
Delivered end-to-end products for clients in science, education, cybersecurity, and travel.
- 2014 — 2017
Co-Founder & CTO · Contextors
Built a rule-based English parser and an edtech product; the company was backed by Nicholas Negroponte and the Israel Innovation Authority.
- 2012 — 2014
CTO, VP R&D · FTBpro / 90min
Architected and scaled a fan-generated football platform to 130M pageviews/month, with 20× growth and no added infrastructure spend.
- 2007 — 2011
Deputy VP R&D · Seeking Alpha
Migrated the platform from WordPress to Rails in three months, cutting page load times 40×.
Outside the code
I built HaDaf, a digital stage for independent Hebrew writing that hosted 342 authors and more than 3,000 works. I’ve also published 165+ pieces of Hebrew poetry and prose, alongside essays in English on Medium.
Read on Medium →