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Mohamed FoulaSoftware Engineer
Summary

Results-oriented software engineer specializing in backend development, with business experience spanning Fintech, B2B, credit, and collections. Committed to solving real-world challenges through scalable system design, with a strong focus on product development and creating impactful solutions. Eager to leverage my problem-solving skills and domain knowledge in a role that emphasizes both backend development and product engineering. Open to relocation.

Professional Experience
Talabat, Software Engineer II
Jun 2024 – present

Key Contribution – Scalable & Efficient Collections System

  • •Contributed to the development of a new collection solution, leveraging C# and .NET to enhance collection rates across the company. This system is the core focus of my squad, driving efficiency and improving financial recovery.
  • •Designed and implemented a scalable, extendable, and fault-tolerant architecture, ensuring seamless integration with existing services to support collection processes.
  • •Collaborated with product, finance, and engineering teams to align collection solutions with business objectives and technical best practices.

    • System Reliability, Automation & Process Optimization

  • •Developed an idempotency middleware that can be easily applied to any API, enhancing system reliability.
  • •Built an automated system for processing scheduled payments, reducing manual intervention and improving efficiency.
  • •Implemented cron jobs to reconcile stuck payments, improving collection success rates.
  • •Added logging and metrics for enhanced observability and issue tracking across all functionalities.
  • •Introduced an automated workflow for manual reconciliation, saving the team 3–4 hours per week and leading cross-team collaboration to implement it.

    • Technical Skills & Practices

  • •Practicing TDD, DDD, refactoring, Extreme Programming (XP), pair programming, and mobbing to ensure high-quality and maintainable code.
  • •Introduced testing guidelines for squad-owned projects, ensuring consistency and making it easier for external teams to contribute.
    • PwC ETIC, Associate Software Engineer
    Nov 2023 – Jun 2024
  • •HR Hiring System
  • •Designed and implemented frontend interfaces using Next.js for a seamless user experience.
  • •Developed and maintained backend services with Express.js, ensuring efficient data handling and integration.
  • •Implemented features for candidate management, including application tracking and salary calculations.
  • •ATS System:
  • •Developed a full-stack job search application enabling admins to upload resumes and search for candidates based on job descriptions, experience level, and education, providing tailored recommendations.
  • •Showcased versatility and proficiency with technologies like Streamlit, FastAPI, and Qdrant, elevating the platform's capabilities.
  • •Integrated with Generative AI technologies such as OpenAI and Langchain for resume processing. Successfully streamlined data extraction, understanding, parsing, and vectorizing.
  • •The system's resume-matching accuracy was enhanced by integrating it with a vector database, resulting in improved performance.

    • Technologies: Generative AI, OpenAI API, FastAPI, Langchain, Qdrant, SQLAlchemy, Javascript, Typescript, Node.js, Next.js, Express.js Nest.js

    Fatura
    Backend Developer
    Jul 2022 – Oct 2023

    We were developing and maintaining APIs from different backend systems to provide data to our applications.

  • •Bel-Agel project:
  • •Successfully developed and maintained the backend system for the Bel-Agel project, enabling third-party vendors to offer credit payment options to their customers.
  • •Facilitated paying dues by integrating payments with mobile wallets such as Vodafone Cash.

  • •Credit system:
  • •This system enables credit functionality integration with other backend systems.
  • •Improved the performance of all system endpoints by an average of 75%, one of which was from 6.5 to 0.5 seconds.

  • •Core B2B e-commerce system:
  • •This e-commerce system allows retailers to order from multiple vendors, sales agents can use it to track retailer performance, and cash collectors can use it to collect credit money from retailers.
  • •Added various features in different sections.

  • •OAuth system:

    • Blocked DDoS and brute-force attacks by creating and publishing an NPM rate-limiter-sliding package.

    Backend Developer intern
    Sep 2021 – Jun 2022

    Developed APIs for internal repetitive tasks. and worked on an auditing system.

    Technologies: Node.js, Express.js, Awilix-express, JavaScript, Typescript, TypeORM, Objection.js, Knex.js, PostgreSQL, MySQL, MongoDB, Firebase, RESTful, GraphQL, PostGraphile, CQRS, Event Sourcing, Elastic-search, Logstash, and Kibana (ELK) stack.

    Education
    Bachelor of Science - Software Engineering, Faculty of Science, Alexandria University
    Sep 2019 – Jun 2022
    Projects

    This system makes you to monitor URLs, create reports about their availability, and get notified whenever the system goes down.

    This project is a book recommendation system that allows users to add the pages of books that they read and the system could recommend the most trending books based on the most read books.

    I needed a rate limiter client that could:

  • •Connect to any data source easily.
  • •Consists of 2 window limiters (inner window and outer window).
  • •The inner window can have a blocking duration after the maximum number of attempts is reached
  • •Each window contains its number of trials per duration, and blocking duration and the user can easily specify these numbers.
    • Technical Skills
  • •Programming Languages: Javascript, Typescript, Java, Python
  • •Libraries and Frameworks: Node,js, Express.js, Nest.js, React Basics, Postgraphile, Mocha.js, NPM Packaging, Fast API, Streamlit
  • •Databases: SQL (MySQL, Postgres), NoSQL (MongoDB, Cassandra, Firebase Realtime Database, Firestore), Vector Databases (Qdrant)
  • •Programming Concepts: Object Oriented Design and Programming, Data Structures, Algorithms, Unit Testing, SOLID, TDD
  • •Backend Concepts: API Design, REST, GraphQL, Event Sourcing, OAuth, JWT, Request Validation, Middlewares, Rate Limiting
  • •Architecture Patterns: N-Tier, Onion, CQRS
  • •Cloud: Google Cloud Platform Fundamentals, GCP Apigee, Firebase Cloud Functions, API Proxy
  • •Generative AI: OpenAI API, ChatGPT Prompting, Langchain
  • •General: NPM Packaging, Docker, Git, Github, Version Control
    • Interpersonal Skills
    Ownership
    Effective Communication
    Fast learner
    Agile
    Team player
    Logical Thinking
    Problem Solving
    Commitment
    Adaptability
    Leadership
    Certificates
    Awards
    Volunteer Experience
  • •Provided guidance and training to teams entering the Egyptian Collegiate Programming Contest.
  • •Facilitated learning and development in competitive programming and teamwork skills while assisting in refining strategies and problem-solving approaches for optimal performance.
    • Additional Information
    Languages: Arabic (Native), English (Advanced)
    Military Status: Final Exemption