Building systems that scale — and code that lasts.
jk.dev
Software engineer and architect with over 15 years of experience across diverse fields, from hardware to software. Always happy to help with architecture, design, and coding — as a volunteer, free of charge.
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15 systems & applications
ModelDispatcher
FeaturedA resilient AI model gateway shared across applications. Four of the other projects here depend on it.
- Python
- AsyncIO
- FastAPI
- +1
JobFlowTracker
FeaturedOne app, three modes: job seeker, recruiter, and task manager. Each keeps its own data and switches at any time.
- React
- Vite
- Firebase
- +1

langshift
FeaturedTranslates an entire repository between 13 programming languages, then runs the result and fixes what breaks.
- Python
- FastAPI
- React
- +1
ogen-ai
One source of truth for AI coding-assistant rules, shared across every repository as a submodule.
- Python
- Agent Skills
- Git submodules

AppMyTrip
Paste the WhatsApp messages where you planned a trip. Get back a real per-day app with maps, packing lists and navigation.
- Python
- FastAPI
- React
- +2

High5
An English-learning app for Hebrew speakers — five things a day, CEFR A1 to C2, working offline.
- React
- TypeScript
- Firebase
- +1

StepByLearn
Generate a structured learning path for any topic, schedule it onto a calendar, and keep every byte in your own browser.
- React
- TypeScript
- IndexedDB
- +1

KanDOne
One task list, seven ways to look at it — board, priority, timeline, calendar and more. Extracted from JobFlowTracker into its own app.
- React
- dnd-kit
- Firebase
- +1
ai-yesod
Engineering guides on coding, architecture and testing — each in a one-minute version and a full one.
- Technical writing
- Python
- TypeScript
- +1
Kill Bills
Personal and family finance on a serverless stack: bank statements and receipts parsed into one ledger, across web and mobile.
- Next.js
- Expo
- TypeScript
- +3

Ot va-Ot
Finds Tanakh verses that open and close with a person's name — the verse recited after the Amidah, matched instantly from 23,206 verses.
- Python
- FastAPI
- PWA
- +1

Shas Radar
Searches the entire Babylonian Talmud for a word, name, or phrase in context, with an authoritative citation and a Sefaria link for every hit.
- Python
- FastAPI
- PWA
- +1

shabetz-na
Personnel shift scheduling driven entirely by configuration: divisions, shifts, skills and rest rules are all defined by the administrator, not built in.
- Python
- FastAPI
- SQLAlchemy
- +2

Sirtuti
Dimensioned sketches for site visits: draw rooms and lots, enter their measurements, and get the area and perimeter of every shape for a price quote.
- Vanilla JS
- Tauri
- Firebase
- +1
MoatMine
Risk-aware investing: every stock gets a graded safety score, every buy is checked against your own risk rules, and the portfolio is stress-tested against past crises.
- Next.js
- TypeScript
- Python
- +3