A hands-on fractional CTO, product builder and open-source author from Bucharest, Romania, EU, building for the web since 1998 (résumé: view / download).
I take software products from a blank repo to production, and stay to run them for a decade. I still write production code; I've also learned which code isn't worth writing.
Curious by nature, an avid reader of fantasy, fiction, history & tech-related literature, always looking to understand how things work and to make them work better.

A product I design, build and run on my own: invoicing and single-entry accounting for Romanian freelancers (PFA, ÎI and PFI) who aren't VAT-registered. You record each transaction once, and the app works out the rest:

• invoices in RON or foreign currencies, sent through ANAF's e-Factura over OAuth, with supplier invoices downloaded in the background
• the mandatory ledgers, kept in real time, with foreign amounts at the daily BNR rate
• the figures for the D212, D390 and D301 returns, in the order the forms ask for them
• running CAS, CASS and income tax estimates, plus a free public PFA tax calculator
• help on every screen that explains the tax rule and cites the article of law

Rebuilt from scratch in 2026, solo, in five months, on TanStack Start, tRPC, Drizzle, PostgreSQL and Bun, self-hosted with Docker and Caddy. Live since October 2026, free while it's being finished, and I use it for my own books.

A Romanian freelancer? Give it a try. Know one? Send them the link.

Creator of Mantine DataTable (~500k npm downloads a month), Mantine ContextMenu, tRPC-SvelteKit and PocketBaseUML.
Also built Next.js Parallel Server Actions, Expose-WSL, IISExpress-Proxy and other open-source projects.
On the commercial side, I've been the technical partner behind LeasingSH.ro since 2013.

Open to fractional CTO and technical partner roles for early-stage products, and to sweat-equity partnerships where I own the technical side.
Fractional CTO and sweat-equity partner at LeasingSH.ro.
Owner / Jack of all trades @ swapp.ro.
Ex Allianz, National Bank of Greece and AJM FleetPurchase.
Co-owner of Yadda.
Doing stuff at SegmentX.ai/SalesPlay.

• TypeScript/JavaScript
• Node.js and Bun
• TanStack Start, Router, Query & Form, React, Next.js, Remix/React Router, but I'm also interested in Svelte/SvelteKit
• React UI Frameworks I've been working with:
  • Mantine — I'm a contributor and also the author of Mantine DataTable and Mantine ContextMenu
  • shadcn/ui over Base UI, which is what swapp.ro is built with
  • Ant Design
  • MaterialUI
  • Blueprint.js
• tRPC — I'm a contributor and the creator of tRPC-SvelteKit and tRPC-Transformer
• PostgreSQL, DrizzleORM, Prisma/ZenStack, Knex.js, Kysely, Hasura
• SQL in general; I have designed enterprise SQL Server/Oracle DB architectures while working for multinational companies in the past
• Valtio, Zustand & Jotai — I favor modern state-management solutions over plain Redux
• Worked with NextAuth/Auth.js and Firebase (mostly firebase-auth), but these days I'm just as happy rolling my own sessions
• PocketBase — I'm a fan of the lightest "back-end in one file" solution and the creator of PocketBaseUML
• Docker & Caddy on a plain VPS — I self-host what I build, with no cloud bill to dread
• I have a few CSS tricks up my sleeve, a good understanding of the DOM, I'm fluent with CSS-in-JS, SASS/CSS-Modules, PostCSS, Emotion and I'm even good-enough at creating website/application designs from scratch; here are some examples:
  • The docs websites for Mantine DataTable, Mantine ContextMenu, tRPC-SvelteKit and ASPAX
  • swapp.ro, yadda.ro, boutiquetravel.ro, interiordelight™️, King's Host, AJM Fleet Purchase, sellcarbuycar.com, LeasingSH.ro, PocketBaseUML

These days I'm happily using Tailwind too: swapp.ro is Tailwind CSS 4 and shadcn/ui all the way down.

• PHP & MySQL, around Y2K (yeah, I've been around a while)
• Java/J2EE, .NET/C#, Oracle, SQL Server, BizTalk, cca. 2002—2007
• CoffeeScript & IcedCoffeeScript, back when JS had no async/await
• Quite a few templating languages such as Mustache or Jade/Pug and some strange old JS frameworks (Backbone, Riot.js) in the pre-React era

• 📒 Mantine DataTable — a "dark-theme aware" table component for your Mantine UI data-rich applications, featuring asynchronous data loading support, pagination, multiple rows selection, column sorting, custom cell data rendering, row context menu, and more
• 🖱️ Mantine ContextMenu — a lightweight yet customizable context-menu for your Mantine applications, with a succinct API and dark-theme support
• 🛠️ Mantine Start and Mantine Next — starter templates for Mantine and TanStack Start / Next.js applications
• ✨ tRPC-SvelteKit — an adapter allowing you to build end-to-end typesafe APIs with tRPC.io in your SvelteKit applications
• ✨ tRPC-Transformer — a simple tRPC transformer based on superjson with Decimal.js support
• ✨ Next.js Parallel Server Actions — run Next.js server actions in parallel: the missing ingredient for a boilerplate-free, tRPC-style server-actions workflow
• 📦 PocketBaseUML — a free, open-source UML diagram generator for PocketBase that can be used online to connect to HTTPS servers, or run as an npm package to inspect local HTTP servers
• 🐧 Expose-WSL — probably the easiest way to expose apps running on WSL to local network devices
• 🌐 IISExpress-Proxy — a simple, yet practical command-line utility enabling .NET developers to test web applications served by IIS Express on remote devices; it's been around since 2015, but I'm amazed by the sheer number of people who still have to use IISExpress nowadays
• 📖 textdiff-create and textdiff-patch — simple utilities for creating and applying lean text diffs
• 🛠️ ASPAX — a simple Node.js asset packager inspired by Rails, in 2013, when Webpack didn't exist
• ⚙️ Node.js, MongoDB, PostgreSQL & MySQL cartridges for Red Hat's OpenShift, in 2014-2015, when Docker wasn't yet a widespread tool

You can find my boring, full-length obituary LinkedIn profile at linkedin.com/in/icflorescu, but here's the blurb:

• 25+ years of experience in web and software development
• I've worked for various companies (from mid-sized to large multinationals such as Allianz and Garanta — member of National Bank of Greece) during the initial part of my career; since 2008 I've been working independently
• Technical partner at LeasingSH.ro since 2013, rebuilt three times as the web evolved, keeping the business running through each migration
• In 2026 I rebuilt swapp.ro from scratch, solo, in five months: invoicing and single-entry accounting for Romanian freelancers, wired into the national e-invoicing system
• I'm at home in rule-heavy domains (insurance, leasing, tax), where "almost right" means wrong
• I sometimes rant write about technology and its impact on human behaviour in articles like these

❤️ open-source, lazy mornings, good coffee, trekking in the mountains, reading
👎 hypocrisy, xenophobia, willful ignorance, people talking bullshit

I'm interested in fractional CTO and technical partner roles for early-stage products, sweat-equity partnerships where I own the technical side, and selected hands-on work.

You can learn more about what I did over the years by visiting my LinkedIn profile, but since you are on this page, chances are that you already have a pretty good idea of how my skills could be of assistance.
If you want to hire me, please consider that I'm most productive with the aforementioned tech-stack.

Drop me a message at the email address listed in my GitHub profile and we'll schedule a meeting on cal.com/icflorescu.