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disguisedowl

Mohamed Hamed

@disguisedowl
5,0(2)

Backend Engineer: Payment Systems, Real Time Pipelines, APIs

Ägypten
Englisch, Arabisch
Einige Informationen werden in englischer Sprache angezeigt.
Über mich
Backend engineer, 4+ years in production. I build APIs, real-time pipelines, payment systems and access control, including crypto/Web3, and own features from architecture to deployment. What I've shipped: - Cut a transaction pipeline from 8s to under 800ms - Real-time ingestion at ~1,000 events/sec, 100K at peak - Multi-provider payments and zero-fee payouts, ~30% lower ops costs - Role-verification bot for 20,000+ concurrent users - $50K+ payout tool for 20+ admins If you need someone to design the whole system, message me.... Mehr lesen

Kompetenzen

d
disguisedowl
Mohamed Hamed
offline • 
Durchschnittliche Antwortzeit: 1 Stunde

Meine Dienstleistungen

API & Integrationen
I will add payments to your app or backend project
Ab60 $ / ProjektWeitere Details
E-Wallet-Entwicklung
I will build a reliable backend for your crypto or web3 app
Ab150 $ / ProjektWeitere Details

Portfolio

Arbeitserfahrung

Lazy_Lions

Full Stack Engineer

Lazy Lions • Vollzeit

Jan 2022 - Jan 2026 • 4 yrs

● Redesigned the transaction-processing pipeline, cutting processing time from 8s to under 800ms and reducing peak server CPU usage ● Refactored backend infrastructure to support additional external data providers, improving modularity and speeding up feature releases ● Designed and implemented scalable APIs, maintaining ~99.9% uptime across production services ● Engineered a real-time data ingestion service sustaining ~1,000 events per second, with peak throughput up to ~100,000 events per second, to power live analytics dashboards ● Developed a Discord bot enforcing role-based access control by verifying user credentials against an external system and restricting entry to verified users ● Scaled the bot to serve 20,000+ active users under concurrent load using optimized caching and async processing

Jellycubes

Backend Engineer

Jellycubes • Freiberufler

Dec 2023 - Nov 2024 • 11 mos

● Integrated a multi-provider payment gateway supporting major payment methods, enabling seamless transaction processing ● Designed a zero-fee payout system, eliminating transaction overhead for end users and reducing operational costs by ~30% ● Created a distribution tool used by 20+ admins to manage $50K+ in automated payouts with built-in eligibility verification ● Developed a companion access-control platform as a monetization layer, generating additional revenue without extra infrastructure cost

2 Bewertungen
5,0

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Zusammensetzung der Bewertung
  • Kommunikation
    5
  • An einen Freund weiterempfehlen
    5
  • Dienstleistung wie beschrieben
    5
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    evejulian

    US

    Vereinigte Staaten

    5

    Very understanding

    50 $

    Preis

    Hilfreich?
    Ja
    Nein
    N
    image-docs

    naisymaree

    AU

    Australien

    5

    Very active and so helpful works out great as they are awake when im sleeping so i dont have to stress over the server running smoothly

    50 $

    Preis

    Hilfreich?
    Ja
    Nein