Hello, I'm

Muhammad
El Sayed

Software Engineer - Backend

Software Engineer with a strong foundation in system design and high-performance data processing. Proven track record in optimizing database throughput and architecting scalable APIs using Python and Node.js. Focused on solving complex engineering challenges through iterative optimization, evidenced by advanced work in log ingestion systems, polyglot architectures, and geospatial data pipelines.

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About Me

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With a strong foundation in Computer Engineering from Alexandria University, I have spent the last year engineering high-performance backend solutions in production environments. My expertise lies in optimizing database interactions and architecting maintainable APIs using Django and PostgreSQL, successfully reducing API latencies and query counts in real-world applications.

While my core expertise is rooted in the Python ecosystem, I am actively expanding my technical horizon by building high-throughput, event-driven platforms using Node.js and C++. I apply a comprehensive approach to performance, bridging the gap between high-level system architecture and low-level code optimization—leveraging SIMD, branchless programming, and advanced concurrency models to engineer solutions that maximize hardware efficiency.

Education

Bachelor of Science in Computer Engineering

Alexandria University

Alexandria, Egypt • Sep 2018 - Jul 2023

Latest Articles

I write about backend development, system design, and software engineering best practices.

Jul 2025 • 5 min read

Array is contiguous in Memory, isn’t it?

Your CS Professor Lied: Why “Contiguous Memory” Isn’t the Whole Truth

programming-languagesmemory-managementprogramming

Read on Medium

Jul 2025 • 7 min read

Think You Know How SQL Queries Work? Think Again.

A Sneak Peek Under the Hood of Query Execution

sqlsql-optimizationpostgresql

Read on Medium

All Articles on Medium

Work Experience

Software Engineer (Reserve Officer)

Egyptian Armed Forces • Alexandria, Egypt

May 2024 - Present

Optimizing database performance and architecting backend systems.

Engineer complex PL/SQL stored procedures and optimize heavy SQL queries within an Oracle Database environment to ensure data consistency for high-volume records
Maintain proficiency in modern backend stacks (Node.js, C++) by architecting high-performance open-source systems during off-duty hours

PL/SQLOracle DatabaseNode.jsC++

Software Engineer

Sindion Technology Ltd • Alexandria, Egypt

Sep 2023 - May 2024

Backend development optimizing performance and architecture.

Optimized database queries through strategic use of Django ORM methods and PostgreSQL indexing, reducing query count by 92.83% and improving API response times by 65.45%, decreasing average latency
Architected geospatial data pipeline using PostGIS for storing and querying polygon/multipolygon geometries, designing RESTful API endpoints to transform PostGIS spatial data into GeoJSON format for real-time visualization on Google Maps, enabling interactive property boundary mapping
Established technical documentation system using OpenAPI (Swagger), Sphinx, and Read the Docs, creating 20+ interactive API specifications with request/response schemas and authentication flows

DjangoPostgreSQLPostGISOpenAPIDocker

Software Engineer Intern

Sindion Technology Ltd • Alexandria, Egypt

Jul 2022 - Oct 2022

Refactoring legacy code and resolving performance bottlenecks.

Refactored legacy Django codebase to improve maintainability, extracting repetitive logic into reusable functions and adhering to DRY principles and PEP 8 conventions
Resolved critical N+1 query performance bottleneck in Django REST Framework API views by implementing ORM optimization techniques, reducing query count by 70% and improving response times

DjangoDjango REST FrameworkPython

Featured Projects

High-Throughput Log Ingestion Platform

Developing high-throughput log ingestion achieving 2.8x performance improvement over baseline through iterative optimization using Node.js cluster mode, worker threads, and Redis streams for parallel processing. Architecting onion architecture with domain-application-infrastructure separation, implementing polyglot API layer with HTTP/1.1, HTTP/2, and gRPC for high-performance binary communication.

Engineered a high-throughput log ingestion system, achieving 2.8x performance improvement over baseline through iterative optimization using Node.js cluster mode and Redis streams.
Implemented onion architecture with strict domain-application-infrastructure separation, and developed polyglot API layer with HTTP/1.1, HTTP/2, and gRPC using Protocol Buffers to reduce payload size by 54% and increase parsing throughput by 9.4x.
Built an event-driven data pipeline using Redis streams for asynchronous batch processing and ClickHouse.
Integrated experimental vector semantic search using OpenAI embeddings and ClickHouse cosine similarity queries for natural language anomaly detection.
Developed high-performance C++ component to replace Node.js workers, increasing throughput by 2.7x while reducing peak CPU load by 75% and memory footprint by 80% through efficient memory management.

Node.jsC++ClickHouseRedisDockergRPCProtobuf

Code

Social Network API

Built RESTful API for social networking platform with Django REST Framework and PostgreSQL, implementing core features (posts, follows, comments, likes) with JWT-based authentication.

Architected modular backend across 6 specialized Django apps with 20+ API endpoints handling user management, content CRUD operations, and social graph relationships with JWT-based authentication.
Designed PostgreSQL database schema leveraging JSONB fields for flexible post metadata storage, optimizing queries through Django ORM with select_related and prefetch_related techniques.
Containerized application using Docker, configured SSL certificates for secure HTTPS communication.

DjangoDjango REST FrameworkPostgreSQLRedisDocker

Code