Serag Edlein Abdelkarim

Backend Software Engineer with 2+ years of hands-on experience building and deploying production web applications with Node.js, NestJS, and TypeScript. Experienced in designing REST APIs, authentication systems, payment integrations, database schemas, Docker-based deployments, and AWS services. Built and shipped 5+ client applications end to end, with additional experience in Spring Boot and AI-powered backend systems.

Freelance Software Developer at Self-Employed (2024-01 – Present)

Designed, built, and shipped 4+ full-stack web applications for clients end to end.

• Delivered production backends for 5+ client projects using NestJS, React, PostgreSQL, MongoDB, and AWS — cutting delivery by 3x faster delivery and shipping time by leveraging Cursor and Claude Code.
• Eliminated client-reported auth issues by implementing JWT, OAuth (Google/Facebook via Passport), OTP, Clerk, and RBAC across all projects.
• Designed relational and document schemas optimized for read-heavy query patterns; applied indexing strategies that visibly improved query performance on the Englishom platform.

AI & ML Intern at IMPACT at Zewail University (2023-01 – 2023-09)

• Built an AI-driven document processing system in Python with OpenAI APIs, automating data extraction across PDFs — directly became the foundation for the DocTalker graduation project.
• Gained hands-on experience with cloud deployment and database-backed AI pipelines, later applied in production.

Instructor at Microsoft Student Partner (MSP) (2021 – 2022)

• Taught Problem-Solving Level 0 and Level 1 using C++, covering core algorithms and data structures fundamentals for university students.
• Prepared 40+ students for exams through structured practice sets and mock contests on vJudge, tracking progress across weekly problem sets.

B.Sc. in Computer Science – Ain Shams University (2020-09 – 2024-09)