00 Introduction

Backend engineer building scalable systems for production at scale.

Hi, I'm Muhammad Shaeel, a dedicated Backend Engineer with a passion for building scalable and efficient applications. Currently at Salla↗, I work on high-throughput systems serving 90K+ merchants across the MENA region.

With 6 years of professional experience, I specialize in backend development, microservices architecture, and cloud technologies — creating robust, scalable server-side solutions.

6yrs

Professional
experience

90K+

Merchants
served (MENA)

2.1M/day

Requests handled
in production

3.4M+

Records migrated
zero-downtime

01 About

I work across the modern backend stack — JavaScript, TypeScript, Python, Node.js, NestJS on the server, and React, Angular on the client when full-stack work is required. I have hands-on experience with cloud platforms including AWS, Azure, and GCP, and I'm proficient in containerization, microservices architecture, and CI/CD pipelines.

Today I'm at Salla, the SaaS platform powering 90K+ merchants across MENA. Before that I worked at DPL on event-driven Lambda migrations for Fortune 500 clients, at DAO PropTech on a 30K-WAU global investment portal, and at Solis Solutions on ad-tech for European football clubs.

My focus is reliability, observability, and making systems simpler over time — not adding complexity in the name of architecture.

02 Experience

Nov 2024 — Present
CURRENT

Backend Engineer

Salla— SaaS e-commerce, MENA

Building high-throughput backend services for the leading Saudi e-commerce platform powering 90K+ merchants. Financial workflows, identity verification, and order infrastructure.

Built a proxy-middleware service between the KYB backend and frontend handling 2.1M+ daily requests for onboarding, banking, and identity verification.
Implemented real-time tracking and notifications for an Apple Wallet orders service serving 80K+ merchants.
Executed a production data migration of 3.4M+ records across databases — consolidated tables and improved scalability and maintainability.

Mar 2024 — Sep 2024

Software Engineer, Backend

DPL— IT consulting, Microsoft Certified Partner

Serverless and event-driven work for Fortune 500 clients across the US, UK, and Europe.

Migrated 2–3 monolithic modules to a Lambda-based event-driven microservices architecture.
Implemented event workflows using AWS SNS, SQS, and other messaging primitives.
Stack: NestJS, AWS Lambda, PostgreSQL, Redis, TypeORM, TypeScript.

Oct 2021 — Feb 2024

Software Engineer, Backend

DAO PropTech— PropTech, Pakistan

Full-stack feature work on a global investment portal serving 30K+ weekly active users.

Shipped end-to-end features — Online Transactions, Peer-to-Peer, Marketplace — driving a 15–20% engagement lift.
Revamped Twilio configuration, authentication, and logging — cut API response time and improved performance by 50%+.
Built a distributed real-time logging system aggregating across multiple resources.

Sep 2020 — Oct 2021

Software Engineer

Solis Solutions— Football tech, Belgium

Ad-tech and growth tooling for 20+ European football clubs.

Engineered an ad tracking and scheduling platform for electronic billboards.
Built a social-media management tool integrating Facebook & Instagram Graph APIs — eliminated 100% of manual posting work.
Automated log ingestion — cut analyst manual workload by ~95%.

03 Tech stack