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webdes1gner

MuhammadHamza

@webdes1gner
4.8(3)

Senior Ruby on Rails developer for payments, APIs and SaaS

Pakistan
English, Urdu
About me
Senior Ruby on Rails engineer with eight years in production Rails. I build systems that handle money and keep working when the internet doesn't: payment integrations (Stripe with 3D Secure, PayPal, Amazon Pay, Apple Pay, Google Pay), multi-tenant SaaS and API-only backends on PostgreSQL or MySQL. I'm the founder and sole engineer of Hajza, a booking and point-of-sale platform live with paying venues in Pakistan and the UAE, and a Senior Backend Engineer on restaurant reservation software. Every change ships with tests. Message me before ordering and I'll confirm scope, price and delivery.... Read more

Skills

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webdes1gner
MuhammadHamza
Offline • 

See my services

API & Integrations
I will do stripe integration, stripe connect, subscriptions and webhooks
From$80 / projectMore details
API & Integrations
I will build a rails backend, rest API or graphql API for your web or mobile app
From$100 / projectMore details

Portfolio

Work experience

UMAI_Restaurant Software

Senior Backend Engineer

UMAI Restaurant Software • Freelance

Jul 2024 - Present • 2 yrs 4 mos

Backend engineering on UMAI's restaurant reservation system: the reservation call feature, waitlists and queue management, and the APIs behind them. Also database query optimization, code review and mentoring junior developers. Fully remote.

K&W_Media Consulting

Senior Software Developer

K&W Media Consulting • Freelance

Oct 2022 - Feb 2025 • 2 yrs 4 mos

Remote contract role, engaged through D3velopers. Supported SaaS clients on a Rails and XSLT codebase: ongoing feature work, XML data processing, MySQL performance tuning, and payment gateway integrations with Stripe, Amazon Pay and PayPal.

Dubizzle_Labs

Senior Software Engineer

Dubizzle Labs • Full-time

Jan 2022 - Sep 2022 • 8 mos

Team lead across several product teams: requirements and architecture with the product team, delivery across backend and frontend, and mentoring junior developers.

3 Reviews
4.8

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Rating Breakdown
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    5
  • Recommend to a friend
    4.7
  • Service as described
    4.7
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