Hazem Khairy Mousa

WORK HISTORY

EDUCATION

ABOUT HAZEM KHAIRY MOUSA

Software Development Engineer II at AmazonWith over 5 years of professional experience in software engineering, I specialize in building scalable backend systems and data-driven features. For the past 3 years, I’ve been part of Amazon\'s Ads organization, working on high-impact systems that power ad targeting and delivery. What I Do- Develop and maintain backend services and APIs for ad sourcing and bid matching- Collaborate cross-functionally to ship features that enhance ad relevance and user engagement- Focus on performance optimization, fault-tolerance, and system reliability at scale- Design and build distributed data processing pipelines using Apache Spark Tech I\'m Skilled With- Languages: Java, Python, C++, JavaScript, TypeScript- Frameworks/Tools: Spark, AWS (CDK, ECS, Lambda, S3, DynamoDB, etc.), REST APIs- Databases: SQL, NoSQL, DynamoDB- Others: Problem solving, distributed systems, service ownership, agile development Background- Bachelor’s in Computer Science from Ain Shams University. Always curious, always learning — passionate about solving complex problems and delivering solutions that scale.