Hazem Salama

Hazem SalamaE-commerce Tech Lead, Qusah Stores

I joined Qusah Stores to build its contract platform, went on to lead the 7-engineer team behind the ERP services, and now lead the e-commerce engineering function I stood up from scratch.

Behind that are four years building ERP, multi-tenant SaaS and marketplace platforms end to end, for businesses across Saudi Arabia, the Gulf, the UK and the US. Every figure on this page is defined in the notes.

Brighton, United Kingdom · Open to senior and lead engineering roles · select contract builds

Qusah Stores case studyBook a callCV

Timeline

Roles, degrees and systems, January 2020 to today.

Roles, degrees and systems by date, newest first
EntryDatesPosition on the axis
Roles
E-commerce Tech Lead, Qusah StoresJun 2026 to present
Senior Software Engineer, Qusah StoresJan 2026 to Jun 2026
Full-Stack Engineer, Qusah StoresAug 2025 to Jan 2026
Independent Software ConsultantSep 2022 to Aug 2025
Technical Co-Founder, Unlimited Creative SolutionsJan 2020 to Jun 2023
Degrees
MSc, University of Sussex2025 to 2026
BSc, AASTMT and University of Northampton2019 to Jun 2023
Systems
Sandlee2026
Mowazana2026
EMTCloud2026
Mo3an2024

Dated to the monthDated to the year only, so it covers the whole yearQusah Stores, my current employer

Experience

Newest first. Each entry is filed under the year it started.

2026

Jan 2026 to present

E-commerce Tech Lead, Qusah Stores

Senior Software Engineer from Jan 2026, Tech Lead from Jun 2026 · Riyadh, remote

I lead the e-commerce engineering function I stood up from scratch: a team of four covering the storefront platform, analytics and technical due diligence on store acquisitions. Before that I led the 7-engineer team behind the ERP services, which handle 10,000+ daily transactions.

  • Built the e-commerce team from zero to four, owning the hiring cycle from role definition to onboarding
  • Migrated an acquired competitor storefront onto an in-house custom theme in 2 days, with zero downtime to live trading
  • Traced flat sales against doubled ad spend to a paid-channel efficiency gap, not site performance, by reconciling 6 data sources
  • Cut ERP API response time from 2.5s to 500ms and deploys from 2 hours to 15 minutes, at a 99.9% uptime SLA
Read the Qusah Stores case study
Qusah Stores, before and after
MeasureBeforeAfterTo scale
ERP API response timenote 32.5s500ms
Deploy timenote 52h15min
Contract processingnote 510min2min
Storefront layout shift (CLS)note 60.850.06
Storefront blocking time (TBT)note 61,170ms180ms
Storefront largest paint (LCP)note 616s6s
Storefront Lighthouse score, mobilenote 63668

BeforeAfterLower is better on every row except Storefront Lighthouse score, mobile. Bars are drawn to scale within each row.

2025 to 2026

MSc, Management of Information Technology

University of Sussex · Brighton, United Kingdom

2026

Sandlee

Architect & Lead Engineer · On-demand services marketplace

An on-demand services marketplace for Saudi Arabia. I designed and built it solo as five products on one backend, with in-app escrow.

  • 1M SAR ($270K) in transactions during a 2-month soft launch
  • Five products on one backend: client app, provider app, admin console, marketing site and API
  • 165 REST endpoints and 35 data models
Read the Sandlee case study

2026

Mowazana

Sole Engineer & Architect · Multi-tenant ERP and POS

A multi-tenant SaaS ERP, POS and ZATCA Phase 2 e-invoicing platform for Saudi business. I built it solo: one Laravel API and one React app serve every tenant.

  • 6 paying tenants onboarded in the first month of launch
  • 73 models on one tenant scope
  • Invoices signed and cleared with ZATCA Phase 2
Read the Mowazana case study

2026

EMTCloud

Sole Engineer & Architect · Inventory and warehousing

A bilingual inventory and warehouse management system for supply-chain operations. The interface is Arabic first and mirrors completely into English.

  • 90% scale-up of the client's sales operations
  • 110 API endpoints and 17 production screens
  • Two languages, one interface
Read the EMTCloud case study

2025

Aug 2025 to Jan 2026

Full-Stack Engineer, Qusah Stores

The contract platform · Riyadh, remote

I joined Qusah Stores to build its contract platform. I integrated the Saudi government APIs Wathq and Sadq for automated validation and credit verification, and moved the processing onto asynchronous queues.

  • Contract processing cut from 10 minutes to 2
  • 8M SAR ($2.1M+) of contract value on the platform in its first four months
Read the Qusah Stores case study

2024

2024

Mo3an

Lead Engineer · Finance and collections

A finance and collections platform covering the complete funding cycle in one Arabic-first system. Built from scratch, with granular role-based access.

  • 3M+ SAR ($800K+) in transactions over three months
  • 71 API endpoints and 23 data models
  • 35 fine-grained permissions
Read the Mo3an case study

2022 to 2023

Sep 2022 to Aug 2025

Independent Software Consultant

Independent practice · Contract, remote

I delivered 15+ SaaS, ERP, CRM and marketplace platforms for clients across the UK, US, Saudi Arabia, UAE and Egypt. Engagements ran as fixed-scope sprints with staged client review.

  • 12M SAR ($3.2M+) in client revenue generated by those platforms within their first year of deployment
  • Engagements averaged 20% under budget
See all five systems

2020 to 2021

Jan 2020 to Jun 2023

Technical Co-Founder, Unlimited Creative Solutions

Digital agency · Cairo, Egypt, on-site

I co-founded a digital agency and led all technical operations across web, CRM and landing-page delivery. I exited by selling my equity stake.

  • 50+ clients, with the solutions for 20+ of them architected personally
  • Average client lead generation raised 60%
  • Delivery timelines cut 30% by setting the stack, process and quality standards
Full history on the CV

2019 to Jun 2023

BSc, Business Information Systems (dual award)

Arab Academy for Science & Technology and University of Northampton

  • Arab Academy for Science & Technology: Graduated with Excellence, GPA 3.5
  • University of Northampton: First Class with Honours

Work

Five case studies. Qusah Stores is under NDA, so it has no screenshots.

Case studies with role, result and link
SystemRoleResultCase study
Qusah StoresEngineering leadership · 2025 to presentE-commerce Tech Lead8M SAR ($2.1M+)of contract value on the platform in its first four monthsnote 1Case study: Qusah Stores
SandleeMarketplace · 2026Architect & Lead Engineer1M SAR ($270K)in transactions during a 2-month soft launchnote 7Case study: Sandlee
MowazanaMulti-tenant ERP · POS · 2026Sole Engineer & Architect6 paying tenantsonboarded in the first month of launchnote 7Case study: Mowazana
EMTCloudInventory & warehousing · 2026Sole Engineer & Architect90%scale-up of the client's sales operationsnote 7Case study: EMTCloud
Mo3anFinance & collections · 2024Lead Engineer3M+ SAR ($800K+)in transactions over three monthsnote 7Case study: Mo3an

What I'm hired to do

Four kinds of work, and the stack behind them.

Kinds of work
WorkWhat it covers
Multi-tenant SaaS & ERPShared-schema architectures, RBAC, billing, and Saudi VAT/ZATCA compliance, running in production with paying tenants.
Marketplaces & real-time platformsGPS tracking, live chat, hold/capture payments, KYC, and dispute flows over Socket.io and BullMQ.
Performance & cloud architectureRedis caching, query optimization, and microservices on AWS. 2.5s endpoints brought down to 500ms; a storefront CLS of 0.85 down to 0.06.
Team leadership & deliveryHiring and leading engineers: a four-person e-commerce function built from zero and a 7-engineer ERP team, with code review, sprint planning, and CI/CD that cut deploys from 2 hours to 15 minutes.
Working stack
DomainIn regular use
Frontend
  • React
  • Next.js
  • React Native (Expo)
  • TypeScript
  • Tailwind CSS
Backend
  • Node.js / Express
  • PHP / Laravel
  • C# / ASP.NET Core
Data
  • PostgreSQL
  • MySQL
  • SQL Server
  • MongoDB
  • Redis
Cloud & delivery
  • AWS · EC2 / S3 / RDS / Lambda
  • GCP · Cloud Functions / BigQuery
  • Docker
  • GitHub Actions
  • Datadog
Integrations
  • Socket.io
  • BullMQ
  • Moyasar Payments
  • ZATCA
  • Wathq · Sadq

Notes

How each figure on this page is defined.

  1. 18M SAR ($2.1M+) of contract value on the Qusah Stores contract platform in its first four months. I built the platform as a full-stack engineer, from Aug 2025.
  2. 2The e-commerce engineering team at Qusah Stores, built from zero to four: Team Lead, Frontend, Backend and UX Research. I owned the hiring cycle from role definition to onboarding.
  3. 3ERP API response time across services handling 10,000+ daily transactions, cut 80% with Redis caching, database indexing and query optimisation. Measured Jan to Jun 2026, at a 99.9% uptime SLA.
  4. 412M SAR ($3.2M+) in client revenue generated by the 15+ platforms I delivered in independent practice, Sep 2022 to Aug 2025, each counted within its first year of deployment.
  5. 5Deploy time is the time to release the ERP services, before and after the move to AWS microservices with GitHub Actions CI/CD. Contract processing is the time to process one contract, before and after integrating Wathq and Sadq behind an asynchronous queue.
  6. 6Mobile measurements on the flagship Salla storefront, before and after the work: Lighthouse score out of 100, Cumulative Layout Shift, Total Blocking Time and Largest Contentful Paint.
  7. 7Sandlee: transactions during a 2-month soft launch. Mowazana: paying tenants onboarded in the first month of launch. EMTCloud: scale-up of the client's sales operations. Mo3an: transactions over three months.

Have a system in mind?

Open to senior and lead engineering roles, and to a small number of contract builds where the system matters to the business. I reply within a working day.

Book a call
Email
info@hazemsalama.dev
Phone
+44 7592 545390
LinkedIn
in/hazemsalama108
GitHub
Hazem-Salama
Based
Brighton, United Kingdom
Hours
GMT and GMT+3 working hours