Mohammad ElhennamyPortfolio ©2026
systems · money · product0%
01About02Skills03Experience04Work05Contact
Senior Systems & Product EngineerFintech · 7+ yrs

Mohammad Elhennamy

I design and build fintech platforms end to end: distributed backends, secure money flows, and the web and mobile apps people actually use.

Node · NestJS · React · React NativeScroll
(01)About

ForoversevenyearsI'veworkedwheresoftwaremeetsmoney.I'vebuilttradingengines,digitalbanksandwealthappsinregulatedenvironments.Icareaboutthepartsnobodysees:idempotentorderlifecycles,reconciliationthatbalancestothecent,auththatholdsupunderattack.Icarejustasmuchaboutthepartseveryonesees.ItakefeaturesfromawhiteboardconversationtotheAppStore,andIenjoyworkingwithproduct,designandbusinesspeopletogetthere.

0+

Years shipping production software

0

Product teams across UAE, Egypt & Canada

0

Fintech & health products taken to launch

0

Languages written professionally

TypeScriptNode.jsNestJSPostgreSQLMicroservicesEvent-DrivenKubernetesAWSRedisDomain-Driven DesignTypeScriptNode.jsNestJSPostgreSQLMicroservicesEvent-DrivenKubernetesAWSRedisDomain-Driven Design
ReactReact NativeNext.jsMongoDBHelmArgo CDJavaPythonC#System DesignReactReact NativeNext.jsMongoDBHelmArgo CDJavaPythonC#System Design
(02)Capabilities

Six areas I've gone deep on through years of shipping regulated, high-stakes products, from the database schema up to the pixels.

01 / Architecture

Distributed Backends

Event-driven microservices in NestJS built on domain-driven design. Services own their data, talk through events, and scale independently without turning into a distributed monolith.

  • Node.js
  • NestJS
  • Microservices
  • Event-Driven
  • DDD
  • REST
BUY AAPL +120
FEE ACCT −0.42
SETL T+1 OK
RECN DAILY Δ 0.00

02 / Fintech

Financial Workflows

Order lifecycles, accounting events and reconciliation pipelines where every state transition is auditable and the numbers always balance.

  • Trading
  • Ledgers
  • Reconciliation
  • Compliance

03 / Trust

Security & Identity

Authentication and authorization for banking: JWT, encryption at rest and in transit, rate limiting, and hardened HTTP and database connections.

  • JWT
  • Encryption
  • Rate limiting
  • TLS
  • RBAC

04 / Interface

Web & Mobile Products

I architect React Native apps from the first screen through App Store and Play Store release, and pair them with fast Next.js web experiences that share types and logic.

  • React
  • React Native
  • Next.js
  • Expo
commit
→
build
→
helm
→
argo
→
k8s

05 / Platform

Cloud & Delivery

Containerised services on Kubernetes, packaged with Helm and shipped through GitOps with Argo CD on AWS. Releases are repeatable and boring, which is how they should be.

  • AWS
  • Kubernetes
  • Helm
  • Argo CD
  • Docker

06 / People

Product & Leadership

I turn fuzzy business requirements into system designs, drive architectural decisions, lead small teams and mentor engineers through code review.

  • System design
  • Agile / Scrum
  • Mentoring
  • AI-assisted eng
(03)Experience

I started in client delivery and moved into digital banking, wealth and trading. Every role sat closer to the money and asked more of the architecture.

  1. Architecting a regulated fintech platform for stock trading and financial processing, from backend services to its public launch on iOS and Android.

    • Design and architect backend services for stock-trading workflows and financial processing systems.
    • Build event-driven NestJS microservices using domain-driven design for a scalable platform.
    • Lead features across backend, web and mobile from requirements to production, including the public App Store & Google Play launch.
    • Safeguard financial workflows: order lifecycle processing, accounting events and reconciliation pipelines.
    • Drive architectural decisions balancing scalability, maintainability and regulatory compliance.
    • Introduce AI-assisted engineering for architecture exploration, documentation and test generation.
    NestJSDDDEvent-DrivenReact NativeKubernetes

Education · 2014 to 2019

German University in Cairo

B.Sc. Media Engineering & Technology
Computer Science major

(04)Selected work

01Real-time multiplayer

Live Party Game

2026

A live, game-show-style mobile game where players compete in real time, steered by an in-app Game Master. Details are under wraps until launch.

  • →Server-authoritative game engine over WebSockets
  • →White-label brand system chosen at build time
ExpoNestJSSocket.IOPrisma
02SaaS backend

Multi-Tenant Booking

2026

One platform where salons, clinics and barbershops manage branches, staff, services, schedules and bookings, with strict tenant isolation.

  • →Slot-generation algorithm across staff schedules
  • →Booking lifecycle with Paymob payments
  • →BullMQ background jobs for reminders & expiry
NestJS 11PrismaPostgreSQLBullMQPaymob
03Social platform

Hangouts

2025

A social app for planning meetups, made up of a mobile client, an admin dashboard and a containerised backend.

  • →Mobile app + admin console + API
  • →Dockerised services via docker-compose
React NativeNestJSDocker
04Order management

Small OMS

2025

A lean order-management service covering orders, inventory and fulfilment states, built to be shipped as a single container.

  • →Explicit order state machine
  • →Prisma-modelled inventory & orders
NestJSPrismaDocker

More work under NDA

Client and side projects, kept to one line each. Happy to walk through them in a conversation.

(05)How I work

01

Understand

Sit with product and business to find the real constraint: regulatory, financial or human.

02

Design

Model the domain, draw the boundaries, and write down the decisions and the trade-offs behind them.

03

Build

Ship in small vertical slices across backend, web and mobile, with tests guarding the money paths.

04

Operate

Observe it in production, reconcile it, harden it, and keep improving it after launch.

(06) Contact

Let's buildsomethingthat lasts.

Open to senior engineering roles, platform architecture work and select freelance projects in fintech and beyond.
mohmadelhinamy7@gmail.com

Phone · WhatsApp

Egypt

Call or message on WhatsApp

Phone · WhatsApp Business

UAE

Call or message on WhatsApp Business

© 2026 Mohammad ElhennamyBuilt with Next.js & Motion