Available for work

YousefSelawi

Software engineer in Dubai. I build backends that stay fast when the data gets big — and the interfaces on top of them.

Django
PostgreSQL
TimescaleDB
React
TypeScript

Read the Harakti case study Engineering notes Résumé

about

I build things that hold up at production scale

I'm a software engineer at Kalvad in Dubai, where I've worked since October 2021 on data platforms for government clients — the kind where a slow dashboard is somebody's actual afternoon.

Outside that I ship my own products. Harakti is a bilingual gym tracker on Google Play and the web, built solo end to end. It's where I get to make the architectural calls and then live with them.

Years shipping production systems

Product shipped, live on iOS and Android

Languages, full RTL

Data that stays fast

Dual-database architectures on PostgreSQL and TimescaleDB — hypertables, continuous aggregates, compression — so time-series queries stay flat as the table grows.

End-to-end ownership

Schema design through to the interface. Django and Django Ninja on the back, React and TypeScript on the front, and the async pipelines wiring them together.

Built for two directions

Arabic as a first-class target rather than a locale file — full right-to-left layout reaching into charts, calendars and every asymmetric value in the codebase.

stack

What I work with

Everything I've shipped with, grouped so you can find what you're looking for. 29 in total.

Used day to day

Languages

Python — used day to day
TypeScript — used day to day
JavaScript — used day to day
SQL — used day to day
HTML
CSS
SCSS

Frameworks

Django — used day to day
Django Ninja — used day to day
React — used day to day
Next.js
Astro
Vite
Capacitor

Databases

PostgreSQL — used day to day
TimescaleDB — used day to day

Tools & Infra

Celery — used day to day
RabbitMQ
LavinMQ
MinIO
Docker
TanStack Query — used day to day
Zustand — used day to day
Sentry
Git — used day to day

UI

Tailwind CSS — used day to day
shadcn/ui — used day to day
Bootstrap — used day to day

Environment

Linux (Arch) — used day to day

experience

Where I've worked

Kalvad

Software Engineer

Period: October 2021 – Present
Location: Dubai, UAE

Architected dual-database infrastructure using PostgreSQL and TimescaleDB hypertables with continuous aggregates and compression, improving time-series query performance for millions of records.
Engineered robust async pipelines with Celery and RabbitMQ — 15+ scheduled jobs for data sync, ML model training, and large-scale exports of 1M+ rows.
Built high-performance REST APIs with Django Ninja, JWT auth, and role-based access control, serving 20+ real-time dashboards.
Implemented enterprise-grade authentication: 2FA, UAEPass, LDAP/Active Directory, API key management, and field-level audit logs.
Optimised database and app performance via indexing, N+1 elimination, and streaming large exports through MinIO.
Developed 20+ dynamic dashboards using React, Zustand, React Query, and Hey API with automatic schema generation.

work

Selected work

Harakti session receipt in Arabic, with full right-to-left layout

Bilingual gym tracker

iOS
Android
Web

Harakti

Local-first logging built for gyms with no signal, streaks that survive rest days, and a leaderboard I shipped knowing exactly where it breaks. Solo — product, backend, frontend and the mobile shell.