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SAMUELGJABEL

senior software engineer

remote · worldwide · GMT+1 · since 2012 · currently @ JointJS

Since 2012 I have shipped frontends with one rule: ux decides, ui delivers, and the enthusiast in me checks every pixel twice.

(the journey · 2012 → now)

(01) 2012–2015 · SMS defence · Dubnica nad Váhom

First commit.

A Slovak defence manufacturer. Real systems, real users, no tutorials.

Software Developer · Maintained the company software and website. Learned the craft from the ground up.

  • HTML
  • CSS
  • early React

(02) 2015–2018 · ambitas · Bratislava

The agency years.

A small Bratislava software house. Clients across Slovakia and Europe.

Frontend Developer · Web apps, dashboards, a patient mobile app. Owning the frontend end to end.

  • React
  • React Native
  • Redux
  • MobX
  • Jest

(03) 2018–2019 · Volanté Systems · Toronto

First time leading.

Enterprise point of sale for stadiums, hospitals and cafeterias across North America.

Frontend Leader & Senior Developer · Led the frontend team. Built the management platform behind self-serve kiosks.

  • React
  • SCSS
  • Redux
  • MobX

(04) 2019–2021 · 4ka · Bratislava

A whole country calling.

Slovakia's homegrown mobile operator. The fourth network.

Senior Lead Frontend Developer · Led the rebrand and rebuild of the self-care platform behind a million active numbers.

  • React
  • React Native
  • Next.js
  • Tailwind
  • Detox

(05) 2021 · Aliter Technologies · Bratislava

From blank repo.

Slovak-Canadian defence tech. A NATO supplier.

Senior Frontend Developer · Stood up a greenfield frontend and rewrote a legacy management system. Short and sharp.

  • React
  • Next.js
  • Gatsby

(06) 2021–2024 · Jigx · Seattle

An app that builds apps.

A no-code platform for native enterprise mobile apps. Offline first.

Senior Frontend Developer · Built the React Native rendering engine and the component system every customer app stands on.

  • React Native
  • Recoil
  • Jest
  • Detox
  • Maestro

(07) 2024–now · JointJS / client IO · remote

Tools other developers build with.

The diagramming engine behind visual apps at Oracle, Boeing and Samsung. Since 2011.

Senior Frontend Developer · Shaping @joint/react, the official React layer. An API tens of thousands of developers will depend on.

  • TypeScript
  • React
  • SVG
  • open source

(craft)

Make it feel instant.Chase the slow parts down the stack.Sweat the last pixel.

(home)
Frontend. React · React Native · TypeScript · Tailwind · Bun
(languages)
TypeScript · Rust · Python
and enough C, C++, Go, Swift, Kotlin to be dangerous
(going deep lately)
Rust · backend performance · optimization
(after hours)
AI research · new trends · agents · whatever shipped this week
web3 too. deep enough to be curious, honest enough to say: no production miles yet

the common kit (baseline, not bragging) · design (Adobe) · video editing · office suite · git · docker · sql

(open source)

Best practices, re-checked over and over.

(off screen)

Mountains, good beer, loud music, friends.

Always exploring something new.