I build AI products end to end.
Senior software engineer and AI engineer. 35 years of shipping software, the last eight as a Tech Lead at Salesforce. Now I build trip.expert, an AI concierge for hotels.
Hi, I'm Isaac.
I built an AI concierge for hotels. See it work
A patent acquired by Microsoft, the Israeli Prime Minister's Award for Software, and teams at:
- Salesforce
- Motorola
- Radware Group
- Bidalgo
- JGA, Los Angeles
trip.expert, an AI concierge for hotels
Guests ask about Wi-Fi, check-in or the beach, in their own language, at any hour. The assistant answers from the property's own facts in 50+ languages, and sends the owner a Telegram alert when a guest needs a person. I designed it, built it and run it, alone.
A scripted preview of the guest chat. The live demo answers from each hotel's own knowledge.
- The answer pipelineLangGraph, RAG over pgvector, streamed answers and a second call that checks each answer against the facts.
- The back officeOwners teach their assistant, add photos and nearby places, and see the questions it could not answer.
- The business sidePaddle billing, cost limits per account, and GDPR data retention that runs every night.
- Quality and operationsAn eval suite of 100 guest questions with an LLM judge, Sentry, uptime checks, Docker on Hetzner.
What happens when a guest asks a question
Four steps, about three seconds. Each step has one job, so each one can be tested and measured on its own.
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Understand
One model call checks the message for safety, detects the language and rewrites the question for search.
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Retrieve
Vector search finds the property's own answers. A question in Japanese finds knowledge written in English.
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Answer
The model answers in the guest's language, only from the property's facts, with photos where they help.
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Verify
A second call compares the draft with the facts and corrects it before the guest sees it.
From loose ideas to production
I have worked as an engineer in Los Angeles, led a company-wide program at Motorola, founded three companies and led a team at Salesforce.
The work I like best starts with a loosely defined problem. I own it from the architecture to the server it runs on, and I stay with it until it works for real users. trip.expert is that, from the first sketch.
- Based in
- Ramat Gan, Israel
- Languages
- Hebrew, English
- Education
- B.Sc. Math and Computer Science, Tel Aviv University, magna cum laude
- Patent
- US 8,549,160, personal media relay for streaming data
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AI Engineer at trip.expert
Independent project. Architecture, AI pipeline, back office and deployment.
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Tech Lead (LMTS) at Salesforce Israel
Set the technical direction of the Data Capture team, client and server, and led its adoption of AI.
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Senior Software Engineer at Bidalgo
New capabilities for a digital campaign management product.
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Tech Lead at Radyoos Media, Radware Group
Back-end administration and billing, and web widgets that served tens of millions of users.
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Owner at SoftExpress Mobile
A software house that delivered large web projects for clients in Israel and the US.
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VP R&D at VidRunner
Founded the Israeli R&D center of a US–Israel venture. Peer-to-peer mobile video, and a US patent.
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Co-founder and CEO at iDune
An enterprise application server for web portals, with teams in Israel, the US and Europe.
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Software Reuse Lead at Motorola Israel
A company-wide reuse program that saved millions of dollars and won the Prime Minister's Award.
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Team Lead at JGA, Los Angeles
C++ products for the semiconductor industry.
Tools I use
AI and agents
LangGraph, agentic workflows, RAG, LLM evaluation, OpenAI API
Back end
Python, FastAPI, Django, .NET, REST, GraphQL
Front end
JavaScript, TypeScript, service workers, event-driven UI
Data
PostgreSQL with pgvector, MySQL, Redis
Infrastructure
AWS, Docker, Caddy, Grafana, Sentry
Languages
Python, TypeScript, C#, PHP, SQL
Want to try trip.expert yourself?
Email me and I will send you a demo account with a sample hotel. You can chat as a guest and change the assistant as an owner.