Skip to content
Available for new projects

Alexandru Mihalașcu Full-Stack Developer Custom software & web products.

I run MHLSQ from Bucharest. I design and build web apps, websites, browser extensions and internal tools, from first call to launch.

Start a projectView projects

16

Published projects

5

Years building

95+

Avg. Lighthouse score

24h

Typical reply time

Recent projects

View projects
tesEngine screenshot

tesEngine

Live-synthesized engine sound in the car browser, driven by GPS speed. 51 engines, from an American V8 to a Dacia 1300 and a Formula V10, with gears, pops and seven dashboard gauges. No samples: every cylinder firing is computed in real time with Web Audio.

JavaScript / Web Audio API / AudioWorklet / Three.js

DuoCart screenshot

DuoCart

A household shopping list synced in real time, plus the daily deals from Kaufland, Lidl, Auchan, Mega Image and Penny, compared across stores.

React / TypeScript / Vite / Firebase

H-Graphs screenshot

H-Graphs

Shift planning for hospital staff: 12, 8 or 4 hour shifts, conflict checks, night and weekend hour totals, and Excel export.

React / TypeScript / Material UI / Vite

What I build

  • Web platforms and product UI

    SaaS dashboards, internal tools and B2B products, structured so new features don't mean a rewrite. Interfaces work on a 360px phone and a wide monitor alike.

    • Next.js
    • TypeScript
    • Responsive
    • Design systems

  • Speed, SEO and accessibility

    Pages that load fast on a phone, pass Core Web Vitals and don't ship JavaScript they don't need. Semantic HTML, structured data and WCAG-compliant layouts.

    • Lighthouse
    • ISR
    • Schema.org
    • WCAG 2.1

  • Integrations and admin panels

    Login, payments, analytics and transactional email, wired up on the server where secrets belong. Admin panels with roles, file uploads and the views your team checks every day.

    • Firebase
    • Stripe
    • OAuth
    • Resend

  • Browser extensions and custom software

    Chrome and Edge extensions, automation scripts and internal tools built around how your team works. At Huawei, tools like these cut a recurring workflow from about 2 hours to under 15 minutes.

    • Chrome Extensions
    • Node.js
    • Automation
    • CLI

How I work

Every project goes through the same four stages, and you can see where it stands at any point.

  1. Discover

    Before any code, we agree in writing on the scope, the risks and how we will know it worked.

  2. Design

    User flows and reusable UI components, shaped around what the product has to do.

  3. Build

    Typed, tested code on a staging link after every sprint, so you see progress as it happens.

  4. Launch

    Production deploy with monitoring and error tracking, plus handover docs for your team.

What clients say

“Alexandru quickly understood what we needed and delivered a clean, stable, easy-to-use application. Staff schedule planning became much simpler - the team adapted right away.”
Simona O.Medical Coordinator, H-Graphs
“The app he built for our fleet works flawlessly. The client-facing interface, the admin module, auto-generated contracts - everything exactly as requested, delivered on time.”
Cristian R.Founder, RKC Rent-A-Car

Buildwith me.

Tell me about your project and I'll get back to you within 24 hours.

Start a project

or write to alex@mhlsq.ro

Available for new projects