Osaf Ali Sayed

Osaf Ali Sayed

Building cool stuff. I code products and write about my experiences.

Experience

EcomlytixFreelance Full Stack DeveloperAug 2025 - Present
  • Built the entire application from scratch using Next.js and Nest.js, ensuring a modular, scalable, and maintainable architecture
  • Designed and implemented RESTful APIs with Nest.js, integrating PostgreSQL databases for reliable data flow and performance.
  • Configured and deployed infrastructure on DigitalOcean Droplets, managing Nginx, SSL (Certbot), and environment setup for production and staging environments.
  • Set up CI/CD pipelines using GitHub Actions to automate testing, building, and deployment of both frontend and backend services.
  • Implemented secure environment variable management and CORS policies to streamline communication between microservices.
  • Designed and optimized database schemas for performance and scalability using PostgreSQL.
  • Automated daily scheduler jobs using BullMQ for backend data synchronization and updates.
  • Managed Domain, DNS, and HTTPS configuration for seamless frontend–backend integration.
GitHub ActionsNext.jsNest.jsTailwind CSSPostgreSQLNode.js
ZendutySoftware EngineerJan 2025 - Aug 2025 (8 Months)
  • Built serializers, viewsets and endpoints in Django and Django REST Framework powering 10+ interactive dashboard features.
  • Minimized database hits through query optimization, improving API response times by 75%.
  • Developed reusable Ant Design components to display key data for sales and technical teams.
  • Created a custom scheduler to run tests sequentially, and parallelly, reducing the overall runtime by 60%.
  • Enhanced Zenduty website reliability by developing a comprehensive PyTest and Cypress suite. Used daily by 8+ developers and QA engineers for code validation.
PythonDjangoDockerReactPostgreSQLAWS
Algo FinancialsPython DeveloperAug 2022 - Dec 2022 (3 Months)
  • Launched an asynchronous API utilizing FastAPI and MongoDB, accelerating data processing speeds by 90% compared to previous synchronous systems, reducing server latency by 30 milliseconds.
  • Established seamless connectivity between FastAPI and MongoDB using Pydantic and Beanie.
  • Implemented 15 new API endpoints, controller and services for enhanced data querying capabilities.
  • Orchestrated the refactoring of order history storage using Redis, accelerating query response times by 75% and enabling faster retrieval of customer purchase information for support teams.
TypeScriptMaterial UIChart.jsReact

Featured Reviews

What people say after the invoice is paid.

We hired Osaf about a year ago and have had a very positive experience working with him. What stands out most is his reliability and ability to get things done. No matter what feature or functionality we needed for our project he was always able to find a way to build it. He is responsive, dependable, and easy to work with. We would definitely recommend him to anyone looking for a skilled and reliable developer.
Kenny JosephD2metrics - Upwork
I had the pleasure of working with Osaf, and I can confidently say he exceeded every expectation. He is extremely smart, curious, and consistently punctual. An absolute gem to work with. During our engagement, he contributed far beyond his role: Built complete test pipelines for both the frontend and backend from scratch, robust, clean, and reliable. Demonstrated deep understanding of asynchronous systems and implemented solutions that were efficient and well-architected. Showed excellent backend engineering skills, especially in Django. Created automation scripts to streamline frontend workflows, including automated tag-adding tools that saved our team significant time. Writes excellent documentation. In fact, when he first joined us as an intern, we tasked him with fixing the backend setup documentation (which had several issues, especially around PostgreSQL). He handled it meticulously and improved the onboarding process for every future developer. He is proactive, communicates clearly, and brings a problem-solving mindset to every task. Truly a standout engineer with a bright future ahead. I'd work with him again without hesitation.
Javeed YaraSDE - Austin AI
I hired Osaf for a few small Django site updates, and he ended up improving much more than expected. He proactively fixed layout and content issues, cleaned up templates, and modernized the site overall. He worked in the CST timezone, which made communication smooth and quick. He delivers clean, professional results without needing constant direction. Fast, responsive, and easy to work with - will definitely hire again.
Steve RoseJailWatch Pro - Upwork
Outstanding experience. Osaf quickly understood our existing Django and Next.js application and resolved several backend, frontend, and AI-related issues with precision. Their debugging approach was structured and efficient, and communication was excellent throughout the project. Everything was delivered on time with clean and maintainable code. I would absolutely work with them again and highly recommend them for complex full-stack and AI-related projects.
Majid AliFull Stack AI Developer - Upwork
View all reviews

Get In Touch

Interested in working with me? Drop me a mail, or message me on WhatsApp.

hi@osafalisayed.com