Khaled Sameer

Head of IT Development ·HSA Group ·Dubai

KhaledSameerخالد سمير

Khaled Sameer, smiling, in glasses, a blue three-piece suit and a polka-dot tie.
Fig. 0 Composed on a golden spiral

I lead the product and technology team at Stoneslane, an HSA Group company in Dubai. I hired the team from zero, and we replaced a licensed white-label ordering app with our own platform.

Get in touch Download CV PDF · Oct 2026

LinkedIn GitHub

In software
since 2014
Leading teams
since 2021
Domains
B2B commerce, payments, ERP
Languages
Arabic and English
Fig. 1Idempotent ordering over a lossy link. Shops in Aden order over networks that drop packets. When a reply is lost, the app retries with the same idempotency key, and the order is placed once.

Case files

The hard calls

Four cases, each told as the problem, the decision, what I did as the lead, and what changed.

  1. Case 01Masdary, Stoneslane · 2025–2026From licensed to owned: the Masdary cut-overI made the build-vs-buy case to management for dropping the white-label ordering app, then ran the cut-over to our in-house app. It moved nearly all orders and ended the license.LeadershipFlutterFirebaseWrite-up in progress
  2. Case 02Masdary, Aden · 2026Built for good networks, shipped to bad onesProduction showed Aden’s slow, lossy links stalling catalog sync and checkout. I led the diagnosis and the redesign: link-aware deadlines, retries behind circuit breakers, a resumable change feed for the catalog and one idempotency key per order.ReliabilityMobileDistributed systemsWrite-up in progress
  3. Case 03HSA Group super app · 2026Three apps, one modular monolithCustomer, picker and courier apps on one TypeScript modular monolith on AWS ECS Fargate, with kill switches, circuit breakers and alarms linked to runbooks. In staging since Oct 2026.ArchitectureAWSTerraformWrite-up in progress
  4. Case 04Tradeling · 2021–2023Checkout for businesses that buy on creditActing lead of the core team that owned payments, checkout, orders, credit and wallet. We integrated Amazon Payment Services, Checkout.com and Al Etihad Credit Bureau.PaymentsNestJSKafkaWrite-up in progress

Operating manual

Five rules I lead by

Each rule comes with the place it was tested.

  1. Rule 01

    Hire on real work, not puzzles.

    In practice

    I wrote the take-home tests, a Flutter delivery planner and an Odoo mobile API, and ran the hiring for every role on the product and technology team. The first engineer started in Oct 2025, and no one has left.

  2. Rule 02

    Build or buy is a business case, not a preference.

    In practice

    I made the case to management for dropping Masdary’s white-label app, then ran the cut-over to our own app until the license ended.

  3. Rule 03

    Choose vendors by comparison, then own the rollout.

    In practice

    I chose Supy for restaurant inventory and ran its rollout, and picked Gameball for group loyalty after comparing vendors. Loyalty is launching early 2027.

  4. Rule 04

    Design for the bad day before launch day.

    In practice

    The super app is designed with kill switches, circuit breakers and alarms linked to runbooks. Masdary retries behind a circuit breaker and uses idempotency keys, so a retried order is never placed twice.

  5. Rule 05

    AI in the workflow, guardrails in the pipeline.

    In practice

    The team works with Claude Code: review agents, shared skills, hooks that block pushes to main and edits to migrations, and CI that runs mutation tests and traces spec rules to tests.

Career

Since 2014, drawn to scale

Bars start and end on the real month, under the official titles. Hatching marks the time I led a team.

  1. Head of IT Development

    Stoneslane (HSA Group)

    Jun 2026 – Present

    Lead the product and technology team. Masdary, the group super app, the group ERP.

    • Sep 2026 Cut-over complete

  2. Senior Software Engineer

    Stoneslane (HSA Group)

    Sep 2023 – Jun 2026

    Developed the Odoo ERP alone, then hired the team. Architect and product owner of the Masdary app.

    • Oct 2025 First hire
    • Apr 2026 App Store release

  3. Senior Full Stack Developer (acting Team Lead)

    Tradeling

    May 2021 – Sep 2023

    Led the core team for payments, checkout, orders, credit and wallet.

  4. Senior Full Stack Web Developer

    MBC Group

    Aug 2018 – May 2021

    Internal applications for MBC staff, on .NET Core, Angular and SQL Server.

  5. Software Engineer

    General Authority for Youth & Sports

    Feb 2017 – Aug 2018

    Moved the authority’s services from paper to online.

  6. Software Developer

    Electronic Spaces

    Jun 2014 – Feb 2017

    Time-attendance software with fingerprint readers and access control.

Open source

Shipped in the open

Rust, Python and Flutter packages, published on crates.io, PyPI and pub.dev.

Contact

Get in touch.

Email reaches me fastest. I am also on LinkedIn and GitHub.

Download CV PDF · Oct 2026Dubai, UAE