Adel Batal

Built and own the notification system for a 2M user marketplace: ~375,000 notifications/day (11.6M/month, peak ~950,000/day) at 33% read and 17% click-through, powering 10+ A/B tested growth experiments across activation, re-engagement, and onboarding. Designed and shipped the EU DAC7 tax reporting pipeline, generating 9,100+ seller compliance records. Integrated PayPal and MangoPay SCA payouts and built IBAN-validated bank account onboarding across the escrow payout infrastructure (KYC, refunds, balance ma

Engineered over 20 marketing and course authoring tools using Vue.js, PHP, Laravel, and Slim, enhancing productivity for 5,000+ course sellers and contributing to a 15% revenue increase. Modernized over 10 legacy functionalities by migrating from jQuery to Vue.js, achieving a 30% improvement in performance and reducing maintenance overhead. Completed over 50 code reviews for a six-member team, maintaining high standards of readability, reusability, and scalability in JavaScript and PHP. Collaborated closely

Provided cultural mediation and translation services and liaised between hundreds of POCs and psychologists, social workers, lawyers, teachers, and doctors using the English, Arabic, and Greek languages.

Co-taught a class of 30 students on programming methodology and design. Coached individual students on leveraging logic-based approaches to tackle specific coding problems using Java, resulting in a notable increase in successful project submissions from 55% to over 75% within one semester.