
Hi! I'm David, an
Ultra-FullStack
Architect
building in the agent era.
For 14+ years I've designed and shipped end-to-end systems: infrastructure, backends, frontends and product. Today I build with AI agents as my team. I use Cursor with project rules, skills and AGENTS.md files, and I work spec-first with OpenSpec, so every change starts as a written proposal and ends as verified, archived specs. That lets me take products from idea to production fast, without the rework.
My current stack is Convex or Supabase on the backend, React, Next.js or SvelteKit on the front, and Netlify and Fly.io for hosting. I build LLM features with the OpenAI API, including WhatsApp conversational agents, embeddings-based search and AI import pipelines. I'm an advocate of spec-driven (SDD) and AI-driven development, and I give talks on both to engineering teams, built on one idea: intent + AI + strong verification.
TECH STACK
// WORK EXPERIENCE
Software Architect & Tech Lead
Cache
Joined to kick-start a new product: designed and implemented the system architecture and many of its services.
Collaborate with the CEO and CTO on technical and product strategy; helped bootstrap the project from concept to execution.
Lead the engineering lifecycle and promote high-quality delivery through hands-on mentorship and technical guidance.
Drove an AI-agent-first engineering workflow (Cursor, spec-driven development) across the team.
Led the design and delivery of CacheIQ, the company’s customer-facing AI assistant: shaped its product and UX, architected its LLM integration, and built a release and evaluation framework that keeps the assistant’s behavior reliable as requirements evolve.
Team Lead & Senior Software Developer
Grappa
Led an international full-stack team in a fast-paced environment, combining hands-on coding with technical leadership.
Designed and developed applications and libraries in a monorepo, managing deployments and infrastructure on Kubernetes.
Developed features across REST and GraphQL APIs (Hasura) and integrated additional microservices.
Built and enhanced React user interfaces with a focus on performance and a seamless user experience.
Developed, optimized and maintained Temporal workflows for reliable, scalable orchestration of complex processes.
Senior DevOps & Full-Stack Developer
Cognishape
Used the OpenAI API for natural-language understanding and generation (NLU/NLG), including advanced prompting and fine-tuning.
Developed Python serverless cloud functions on GCP supporting complex chatbot workflows and integrating various natural-language-processing methods.
Led major work on a React Native app: added features, fixed major issues, upgraded dependencies and led major refactors to improve scalability, performance and security.
Introduced development practices from the ground up: a monorepo, CI/CD scripts and workflows, test automation and key security measures.
Senior Frontend Developer
Synamedia
Developed the entire Angular UI for Synamedia EverGuard, the management interface of a content-protection system, including charts built with amCharts.
Defined API schemas and implementation decisions together with the backend team, and took part in UX/design and architectural decisions.
Co-Founder, Senior DevOps & Full-Stack Developer
Headstream
Co-founded Headstream, a sourcing-intelligence platform for Amazon sellers that surfaces and ranks profitable products from supplier catalogs, forecasts their performance, and manages supplier ordering; led its development end-to-end.
Wrote a complete suite of cloud infrastructure as code with AWS CDK (Python and JavaScript).
Developed Python scripts for data harvesting, streaming, aggregation, analysis and ML, running on AWS ECS/Fargate and Kinesis Data Firehose.
Handled data and search with AWS RDS/MySQL, S3 + Athena, Elasticsearch and Redis.
Developed the React UI on a serverless GraphQL API (API Gateway, Lambda, Cognito, Amplify), plus orchestration, scheduling and monitoring with Lambda and CloudWatch.
Fullstack Developer & Team Lead
Samanage (SolarWinds ITSM)
Co-developed standalone and Salesforce web applications: backend in Ruby on Rails, frontend in Rails and React, and a React Native mobile app.
Mentored developers and later led the team; took part in hiring.
Took part in architecture decisions and DevOps work.

Co-Founder, DevOps & Backend Developer
Sponger
Co-founded a startup and built the product from scratch to its first users.
Developed the entire backend (Ruby on Rails, Redis, MongoDB) with automated CI/CD.
Built an anti-fraud mechanism and a monitoring system; contributed to business and product planning, and UX.
DevOps Engineer & RoR Developer
Fiverr
Joined as a paid intern after self-teaching Ruby on Rails via Code School, and grew quickly from there.
One of the early developers of the platform; the team built rapidly scaling infrastructure supporting millions of active users.
Developed Ruby on Rails backend features and microservices; troubleshot live system issues and downtime and handled fraud and cyber attacks.
Helped get other developers up to speed.

Project Management, Radar & Radio Systems
Israel Defense Forces (Academic Reserve)
Served in the Atuda academic-reserve officer track, assisting in project management in the radar and radio domains.
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\|__| \|_______|\|__|\|__| \|__| \|__| \|_______|\|_______|\|__|\|_______|rewild.quest
Slow tech, nature & philosophy journal

I built a live publishing platform for essays, podcast episodes and guided sits on reconnecting with nature and reclaiming attention: a static-first SvelteKit site with optional Convex-powered comments and notifications.
Tirshom
WhatsApp AI ordering for local restaurants
I built a multi-tenant SaaS that replaces restaurant phone orders with a WhatsApp AI agent. Customers order in free-form Hebrew or English; the agent builds the order, confirms the price and pushes it to a live kitchen dashboard, where staff manage menus, pricing and orders in a bilingual admin. The backend runs on Convex (AI actions, menu import, conversation summaries), the WhatsApp bridge on Fly.io and the admin on Netlify.
Merhok
Community studio ops for parents
I built Merhok for a community studio, to run its operations for parents: they browse activities, enroll in a session, charge a household tab (or pay now via Peach) and get an in-app confirmation from the studio. I built it as a Hebrew RTL product on Next.js 15 + Convex, with the catalog, waitlist, ledger and staff messaging in one warm, bento-style UI.
Woodcut Planner
Wood cutting optimizer: fewer boards, less waste
I built a planner that takes a parts list and returns an optimized cutting plan per board, how many boards to buy, a purchase-order CSV and a cut sheet for the workshop. The core is Python, with a CLI and an HTTP API (deployed on Render), plus a SvelteKit web UI.
Fun(x)
AI math tutor (EN/HE)
I built Fun(x) with my son: an AI math tutor where you ask in Hebrew, pick a solution approach and walk through KaTeX steps with a live graph. React + Express + OpenAI, bilingual EN/HE with full RTL — live at funx.fly.dev.
dropr
Dropshipping platform for the Israeli market

I built a B2B marketplace connecting Israeli droppers with overseas suppliers: quote comparison, multi-supplier checkout and supplier inventory. It runs on Next.js and Supabase (Postgres, RLS, Auth), with Hebrew/English RTL and transactional email, and I developed it spec-first with OpenSpec in Cursor.
yeshmi
Auction landing pages for creators and sellers
I built Yeshmi to turn any item or charity prize into a shareable auction page with images, the current price and a countdown. Anyone can bid from their phone without signing up, and sellers see every bid in one dashboard and can reject bad ones. Next.js 15, Supabase (Auth, Postgres, Storage), next-intl and Zod.
Enthrall
Intent-first communication PWA (pre-release)

I'm building an anti-notification PWA that replaces phone calls with multimodal, intent-driven sessions. The backend is Convex (auth, presence, crons, an AI assistant and OpenAI embeddings for semantic recall), tested with Vitest and convex-test.
PRSNT
Autonomous, values-aware calendar assistant

I'm building a goal-driven calendar agent that imports your values and tasks, schedules its own events and asks permission before moving blocks you created. It's a pre-release MVP with a backend scheduler and full product specs.
DocuVault
Enterprise document management with AI chat (Compass)

I built a document vault with AI-assisted search and chat over uploaded PDF and DOCX files, with natural-language Q&A over your library on Supabase.
faceless
YouTube niche research CLI pipeline

I built a CLI research pipeline that scrapes YouTube channels, transcribes them and uses AI to sort 30+ faceless-channel niches for content strategy.
Headstream
Smart eCommerce Portfolio Management (EPM)

I co-founded Headstream, a sourcing-intelligence platform for Amazon sellers that surfaces and ranks profitable products from supplier catalogs, forecasts their performance and manages supplier ordering. I developed the entire stack: infrastructure as code, deployment and CI/CD, scheduling and logs, databases and search, data harvesting and analysis, a serverless API, auth, orchestration and the frontend.
AORIKA - אֵאוֹרִיקָה
Showcase of a local woodworking workshop
AORIKA is a local woodworking workshop, offering various wood workshops and products, for small and medium-sized groups. AORIKA's website showcases the range of workshops and services, a gallery of past workshops, and encourages the user to contact the owner. I designed and developed the entire site with a Jamstack approach, using Angular, Scully and more.
David's CV (This Website)
Interactive CV Webapp
I designed and developed this site, which showcases my experience and projects interactively, as a Jamstack app with Gatsby & React, Contentful and Tailwind CSS. I manage the content in Contentful and refresh it with AI-assisted workflows.
EverGuard by Synamedia
Piracy Detection & Disruption System (UI)

I developed the entire frontend of EverGuard, Synamedia's management interface for its content-protection system, and took part in UX/design and architecture decisions.
Cake DIY - עוּגָה בְּהַרְכָּבָה
Customize your cake
Cake DIY is a weekend project, an MVP, which allow cakes customization and orders from a boutique bakery named Or & Kinamon. It is both desktop and mobile ready and easily supports adding more ingredients. I built the entire web app with CoffeeScript, SASS and Koala compiler, and designed the UI and all of the SVG vector graphics from scratch.
Sponger.me
Micro Crowd Fun-ding Platform

I co-founded Sponger, a social micro-crowdfunding platform, and built the product from scratch to its first users. I developed the entire backend, DevOps and cloud infrastructure, authentication, anti-fraud and monitoring, and contributed to business and product planning and UX.
# Trivia Facts
I’m a real-life natural debugger, relentlessly refactoring everything around me all the time 🛠️
My family and friends call me Deddy. When spelled in Hebrew on an English keyword (it happens 🤷🏻♂️) it gives ssh. I'm very proud of that 🤓
I have a passion for new technologies and methods and I get onboard quickly. 👨💻 #FastLearner #Autodidact
I’m a musician and producer of various musical genres #Electronic🎹 #RockBallads🎸 #JewishElectroAndalusian🎻🪘 #Spotify
I love writing songs and producing music videos for my kids and loved ones.
I usually work remotely - from home as well all around the world 🌎 #aroundtheworld
My wife and I have 4 adorable kids ⚽🦄🧸
We live in Northern Israel 🇮🇱
I have a B.Sc. Degree in Electronics Engineering from Jerusalem College of Technology (JCT)👨🏻🎓 #Engineer
You want me on your team 😉



