👋Hey, I'mKhaled Awad
Software Engineer building scalable systems serving 65+ million users. Passionate about creating impactful software and making people's lives easier.
Khaled Awad
Software Engineer
Currently at PayPay JapanBuilding Scalable
Systems at Scale.
I'm a Software Engineer based in Tokyo, Japan with 7+ years of experience building high-scale distributed systems and cloud infrastructure.
Currently at PayPay, I work across User Module and Payout teams, handling services for 65M+ users and processing 600K+ daily payouts.
Education
Bachelor of Science in Computer and Communications Engineering
Faculty of Engineering, Alexandria University
2019 • Egypt
Certifications
AWS Certified Solutions Architect
Amazon Web Services
AWS Certified Developer
Amazon Web Services
Featured Projects & Impact.
PayPay User Module
Fintech
Core user services for 65M+ active users with advanced blockage tools and robust fallback mechanisms.
Optimized user module services ensuring seamless performance. Engineered tools that reduced support handling time by 30% and achieved 75% reduction in consumer failures.
Bank Transfer System
Fintech
Brand-new bank transfer system serving 66M users with disaster recovery for 600K+ daily payouts.
Built and maintained core payout infrastructure processing 100M+ JPY transactions. Designed disaster recovery ensuring 99.99% uptime for critical financial operations.
Cloud Infrastructure Migration
Cloud/DevOps
$111M enterprise cloud migration with multi-region fault tolerant infrastructure using Terraform and CloudFormation.
Side Projects & Experiments
Government Telework Platform
Enterprise
Platform that helped client ministry rise to 7th best telework country, serving 168K users with 225K monthly transactions.
My
Journey &
Career.
"Building systems that scale to millions while maintaining code quality and reliability."
Software Engineer
Working across User Module and Payout teams, building and optimizing services for Japan's largest mobile payment platform.
User Module Team
- ▸Optimized core user module services ensuring seamless performance for over 65 million active users
- ▸Engineered advanced user blockage tool reducing average handling time by 30% for customer support
- ▸Achieved 75% reduction in user event consumer failures by architecting robust fallback and retry mechanism
Payout Team
- ▸Developed brand-new bank transfer system for over 66 million users
- ▸Managed periodic payouts for 3.6 million merchants including daily payouts and transfer reports
- ▸Ensured continuity of service through disaster recovery for 600,000+ daily payouts
- ▸Achieved integration with merchant systems processing over 100 million JPY worth of transactions
- ▸Improved new member efficiency through development automation scripts for onboarding
Cloud Engineer
AWS Certified Solution Architect & Developer working on enterprise cloud infrastructure and automation.
- ▸Created over 20 internal automation scripts for cloud instances, Kubernetes, security policies, and monitoring tools
- ▸Contributed to successful migration of $111 million worth of corporate client infrastructure to the cloud
- ▸Designed reliable, available, and scalable systems across various regions using CloudFormation/Terraform
- ▸Wrote automation scripts for AWS services including EC2, ECS, EKS
Graduate Research Assistant
Research on blockchain solutions for secure historical text storage.
- ▸Developed blockchain-based solution for storing Islamic Hadiths with multiple institutions as validators
- ▸Published paper in the 'Computers' journal of the MDPI publishing group
Software Engineer
Full-stack development on high-impact government and enterprise projects.
- ▸Launched pilot projects with 168,000 registered users and 225,000 monthly transactions
- ▸Enabled client ministry to rise 7 ranks to 7th best telework country in 2024
- ▸Achieved 20% increase in performance and 70% decrease in error rates using New Relic and Sentry
Academic Publications & Research.
Let's Build
Something Amazing.
I'm always interested in hearing about new opportunities, challenging projects, or just having a chat about technology.