Handsala ABGothenburg, Sweden

hand·sala (að), v.: to make over (confirm) by shaking hands.

Concise Dictionary of Old Icelandic

Hey! I'm Jacob, a developer who finds joy in the logic of code and the chaos of the real world. Whether I'm debugging in a café or renovating a house in the woods, I'm always building something.

Shake on itSelected work

Selected work

(04) experiments & applications

Data Ingestion

Knyta

Knyta is an AI-assisted data-ingestion engine. It turns the CSVs, exports and one-off files other people send you into clean rows in your database — through pipelines you can read, replay and trust. And when a sender changes their format, Knyta proposes the fix. You approve it. Nobody rewrites scripts at midnight.

  • AI writes the pipeline once. Boring, deterministic code runs it forever
  • Nothing new touches production without approval
  • Postgres works today. APIs and other databases are on the way
GoPythonPostgres
Two hands tie ropes together with a square knot

Personal Finance

Wealth Tracker

A private dashboard that turns scattered accounts into one honest picture of net worth, debt included. Open any account, or all of them, for the ledger and the portfolio behind the number. Then project forward: pick a trend model, set your own rate, see where the line goes. I built it to test Knyta against something real. Still under development, behind a Google sign-in.

  • Debt is shown as plainly as assets
  • Projections you steer: trend models, your own assumptions, your own rate
  • Knyta ingestion is next: drop any file, it lands in the data
ReactTypeScriptSupabase
A red curve rises and falls across hand-drawn graph paper

Business Intelligence

Company Report

The vision: any company's business model, positioning, and financials without the hours of research. The landing page tested the market. Paused, not abandoned.

  • Tested market demand for automated company analysis
  • The landing page is still live
Next.jsTailwindSupabase
An illustrated hand passes a paper report to another hand

Puzzle Game

Palette

A passion project: Sudoku crossed with a coloring book. The board is split into random areas, and you fill them with colors that follow a set of rules. Every puzzle is generated fresh, so you never solve the same one twice.

  • Fresh puzzles every day
  • Multiple grid sizes for when you're looking for a challenge
  • Clean, colorful design with no mandatory ads or in-app purchases
FlutterDartDancing Links
Screenshot of a filled Palette puzzle

I'm open for new projects and odd ideas. Based in Gothenburg, working remotely, one message away.

Email[email protected]

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© 2026 Handsala AB

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