Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I am an AWS Certified Solutions Architect – Associate with over three years of experience as a full stack engineer, specializing in backend development and cloud-native architecture. I have proficiency in PHP, Laravel, REST/GraphQL APIs, and various AWS services such as Lambda, EC2, S3, and RDS. I have solid expertise in DevOps, Infrastructure as Code, and CI/CD pipelines, enabling me to engineer scalable systems, develop secure APIs, and deliver high-performance solutions across multiple industries. I thrive when solving complex technical challenges and collaborating with cross-functional teams in agile environments. I am committed to effective communication to ensure the success of every project I undertake and continuously improve my skills to stay ahead in the evolving tech landscape.…I am an AWS Certified Solutions Architect – Associate with over three years of experience as a full stack engineer, specializing in backend development and cloud-native architecture. I have proficiency in PHP, Laravel, REST/GraphQL APIs, and various AWS services such as Lambda, EC2, S3, and RDS. I have solid expertise in DevOps, Infrastructure as Code, and CI/CD pipelines, enabling me to engineer scalable systems, develop secure APIs, and deliver high-performance solutions across multiple industries. I thrive when solving complex technical challenges and collaborating with cross-functional teams in agile environments. I am committed to effective communication to ensure the success of every project I undertake and continuously improve my skills to stay ahead in the evolving tech landscape.

Mohamed El-Haj

Back-End Developer, Full Stack Developer, Cloud Developer, +2





I am an AWS Certified Solutions Architect – Associate with over three years of experience as a full stack engineer, specializing in backend development and cloud-native architecture. I have proficiency in PHP, Laravel, REST/GraphQL APIs, and various AWS services such as Lambda, EC2, S3, and RDS. I have solid expertise in DevOps, Infrastructure as Code, and CI/CD pipelines, enabling me to engineer scalable systems, develop secure APIs, and deliver high-performance solutions across multiple industries. I thrive when solving complex technical challenges and collaborating with cross-functional teams in agile environments. I am committed to effective communication to ensure the success of every project I undertake and continuously improve my skills to stay ahead in the evolving tech landscape.…I am an AWS Certified Solutions Architect – Associate with over three years of experience as a full stack engineer, specializing in backend development and cloud-native architecture. I have proficiency in PHP, Laravel, REST/GraphQL APIs, and various AWS services such as Lambda, EC2, S3, and RDS. I have solid expertise in DevOps, Infrastructure as Code, and CI/CD pipelines, enabling me to engineer scalable systems, develop secure APIs, and deliver high-performance solutions across multiple industries. I thrive when solving complex technical challenges and collaborating with cross-functional teams in agile environments. I am committed to effective communication to ensure the success of every project I undertake and continuously improve my skills to stay ahead in the evolving tech landscape.

Available to hire

I am an AWS Certified Solutions Architect – Associate with over three years of experience as a full stack engineer, specializing in backend development and cloud-native architecture. I have proficiency in PHP, Laravel, REST/GraphQL APIs, and various AWS services such as Lambda, EC2, S3, and RDS. I have solid expertise in DevOps, Infrastructure as Code, and CI/CD pipelines, enabling me to engineer scalable systems, develop secure APIs, and deliver high-performance solutions across multiple industries.

I thrive when solving complex technical challenges and collaborating with cross-functional teams in agile environments. I am committed to effective communication to ensure the success of every project I undertake and continuously improve my skills to stay ahead in the evolving tech landscape.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Backend Developer at Freelance

February 28, 2025 - July 28, 2025

Enhanced database response speeds by 25% via optimized query execution and indexing strategies. Boosted user experience by optimizing backend logic to reduce API response times by 30% using PHP and Laravel. Reduced email infrastructure costs by 75% through AWS cost optimization and cloud-native architecture. Implemented secure REST APIs and GraphQL services with JWT authentication and rate limiting to meet real estate/property listing standards.

Backend Developer at Oxygen Technologies

May 31, 2024 - July 28, 2025

Transformed business requirements into scalable cloud-native solutions, reducing development time by 30% using Terraform and Infrastructure as Code practices. Engineered high-performance APIs leveraging AWS Lambda and Docker, achieving 50% reduction in response times through caching and microservices architecture. Integrated telecom APIs and secure payment gateways with gRPC and SSL/TLS protocols to ensure system compliance in real estate domains. Collaborated with cross-functional teams using DevOps tools (CI/CD pipelines via Git) to accelerate deployment cycles and enhance maintainability.

Backend Developer at Freelance

July 31, 2022 - July 28, 2025

Designed and maintained RESTful APIs aligned with real estate/property listing use cases, improving data exchange efficiency through custom third-party integrations. Leveraged Laravel and MySQL to build secure web applications, employing Entity Framework Core for seamless database interactions in housing platforms. Optimized database storage and retrieval speeds by 40% using normalization and partitioning techniques for real estate data management. Streamlined UI/UX workflows by collaborating with front-end developers, aligning server-side logic with responsive design principles in property portals.

Backend Developer at Freelance

February 28, 2025 - August 5, 2025

Enhanced database response speeds by 25% through optimized query execution and indexing strategies. Improved user experience by implementing backend logic optimizations, reducing API response times by 30%. Achieved a 75% reduction in email infrastructure costs by migrating to AWS SES and implementing cost-monitoring dashboards.

Backend Developer at Oxygen Technologies

May 31, 2024 - August 5, 2025

Converted business requirements into scalable technical solutions, reducing development time by 30% using agile methodologies. Optimized API performance by 50% through caching strategies and code refactoring, enhancing system scalability. Integrated telecom APIs for real-time data exchange and developed secure payment gateway solutions complying with PCI DSS. Collaborated with cross-functional teams to deliver feature enhancements on time while maintaining industry-standard security protocols.

Backend Developer at Freelance

July 31, 2022 - August 5, 2025

Engineered RESTful APIs for multiple clients using the Laravel framework, improving system functionality and user engagement. Implemented robust database architectures with MySQL, increasing data retrieval speeds by 20% through indexing and sharding. Facilitated seamless front-end integration by maintaining API documentation and conducting regular code reviews with client developers.