DevFIRE WEB
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Otto Kartye · founder

I build the whole thing.

I started in 2004 keeping a university network alive in Satu Mare. Twenty years, one country move and a lot of teams later, I design, build and run complete products: the app on your phone, the website, the AI and the backend behind them.

Otto Kartye · Founder, DevFIRE WEB · Luxembourg

Work with me Read the timeline
Based in Luxembourg
Otto Kartye, founder of DevFIRE WEB

In numbers

12+years building software, since my first line of PHP in 2008
15engineers in the largest team I led
6languages I work in, from Romanian to Luxembourgish
4products of my own, designed, built and running
I speakRomânăMagyarEnglishFrançaisLëtzebuergeschDeutschNative in the first two.

The story

2004 → now

From a server room in Satu Mare to leading teams in Luxembourg, and then to a studio of my own.

  1. 2004to 2008

    ROSatu Mare

    Network administrator

    "Vasile Goldiș" Western University

    I kept a university campus online and ran its Moodle e-learning platform, while studying for my bachelor's in informatics at the same university. It taught me that software only matters if it stays up.

    LinuxNetworkingMoodle

  2. 2008to 2012

    ROSatu Mare

    Software developer + network admin

    Quelle Romania

    From cables to code. I built internal web tools for a large mail-order company and looked after the Linux servers they ran on, so I learned both sides of every outage.

    PHPAngularJSLinux

  3. 2013Move to Luxembourg

    LUGrevenmacherNew country

    Full-stack developer

    Collaboration Online Systems

    I moved to Luxembourg and spent three years on document management software, from the database to the browser. A new country, a new stack, and French and German in the office every day.

    C#ASP.NET MVCJavaScript

  4. 2016to 2017

    LULuxembourg

    Senior React developer

    atHome Group

    I helped build a new website for one of Luxembourg's best-known property portals, in React. My switch from full-stack to frontend specialist.

    ReactJavaScript

  5. 2017to 2022 · lead roles

    LULuxembourgTeams up to 15

    From senior developer to frontend lead

    Reborn · fintech and telecom

    Five years, four roles, one direction: more responsibility for how the whole frontend is built, and for the people building it.

    2017Senior Angular developer on a KYC platform, in a team of 10+.

    2018Angular + React lead for internal tools at a national telecom group.

    2019Angular frontend lead for three apps of a KYC/AML platform: four-eye approvals, dynamic forms and a React Native mobile app, with about 15 developers.

    2021Tech lead of the platform's redesign, leading four developers.

    2022React frontend lead: the architecture of two new apps, for users and for consultants.

    AngularReactTypeScriptStencilJSReact Native

  6. 2022to 2023

    LUDudelangeROTimișoara

    Senior React developer + my first own product

    Nexode · JASC Solutions · TimeSpent

    I redesigned an admin panel and built a toolbox of form components at Nexode, then a frontend and its admin from scratch for JASC Solutions. On the side I shipped TimeSpent, time tracking and invoicing for freelancers. The first thing that was entirely mine.

    ReactTailwindFirebase

  7. 2022to now · part-time

    LULuxembourg

    Frontend lead + solutions architect

    Carbonify

    I designed a multi-tenant configurator and a dynamic frontend engine. Onboarding a new client went from weeks to hours.

    Next.jsSanityMulti-tenant

  8. 2024to now

    LULuxembourgROSatu MareNow

    Founder, DevFIRE WEB

    DevFIRE WEB SRL

    It started with a photography app: React Native, a web admin and Firebase. Today the studio runs four products end to end, mobile, web, AI and backend, and builds the same way for clients.

    PortiaKachFitBeaconStepNomentous
    FlutterNext.jsSupabaseGoogle GeminiHonoVercel

  9. 2026to now

    Under NDAClient and partners not named

    Frontend consultant

    Consulting work on client apps under NDA

    Alongside the studio I consult through two partner companies: an app redesign, a new web admin app and a translation tool, for a client I can't name. Like several other client apps I have worked on over the years, it stays off this page by agreement.

    App redesignWeb adminTranslation tooling

Skills + stack

Four eras of tools

The tools changed every few years. The habit of learning the next one did not.

2004 – 20128 yrs

Foundations

Servers, networks and the first web apps, in Romania.

LinuxNetworkingPHPAngularJSMoodle
2013 – 20164 yrs

Full-stack

Business software from database to browser, in Luxembourg.

C#ASP.NET MVCJavaScriptReact
2017 – 20237 yrs

Frontend lead

Architecture, design systems and teams for fintech, telecom and SaaS.

AngularReactTypeScriptStencilJSReact NativeNext.jsSanity
2024 → nowtoday

Studio

Whole products: mobile, web, AI and the backend behind them.

FlutterNext.jsSupabasePostgresGeminiHonoCloudflareStripeRevenueCat

If I wouldn't run it myself, I don't ship it to you.

How I work

Four rules I keep

Show it before I build it

Clickable mocks of every screen come first. Nobody should pay for code to find out they wanted something else.

Own it end to end

From the database schema to the App Store listing. Fewer hand-offs, fewer things lost between them.

Small, senior, direct

You talk to the person who writes the code. Answers come in plain words, in your language.

Privacy is a design rule

EU hosting, as little personal data as possible, and AI that runs on the server with a human check.

Start a project

Let's build the next one together.

Tell me what you want to make and who it is for. I read every message myself.

Write to me contact@devfireweb.eu