About Me

    A passionate software engineer dedicated to building elegant solutions for complex problems

    ES

    Eslam SifeEldin

    I've spent most of my career picking up systems that were stuck and getting them unstuck. Right now I'm replatforming a 15-year-old Rockwell manufacturing system to Spring Boot 3 microservices at Integrant.

    Before that I worked on Parchment, a credential exchange platform that handles 18.5M+ academic records for 15,000+ institutions. FERPA-compliant pipelines on AWS, high-uptime requirements, no room for mistakes.

    10+ years of Java in production. Spring Boot, AWS, Kubernetes. I know how to take a legacy codebase and turn it into something the next team can actually work with.

    Giza, Egypt
    10+ Years Experience
    Open to Remote
    Download Resume

    Experience

    Principal Software Engineer

    Integrant

    July 2024 - Present
    Cairo, Egypt

    Leading multiple high-impact projects: modernizing legacy MES systems, building FERPA-compliant EdTech integrations, and developing AI-powered enterprise tools.

    • Parchment - Microservices Architecture: Designed and developed Java microservices for credential exchange platform serving 15,000+ educational institutions and processing 18.5M+ academic records annually with 99.9% uptime
    • Parchment - Spring Boot 3 / JDK 21 Migration: Led platform migration from legacy Java stack, reducing credential processing time from minutes to seconds with 35% performance gain
    • Parchment - AWS Cloud Infrastructure: Built FERPA-compliant data pipelines using AWS Lambda, SQS, S3, and HashiCorp Vault on EKS
    • Parchment - OCR Processing Optimization: Improved transcript OCR accuracy to 96% through workflow optimization, reducing manual intervention by 70%
    • APTAR MES - Legacy System Modernization: Led replatforming of 15-year-old Rockwell MES application to Spring Boot 3 microservices, migrating 800+ database tables and 40GB+ production data with zero data loss
    • APTAR MES - Database Export Tooling: Built custom database migration utilities achieving 14x performance improvement using parallel processing and batch optimization
    • Internal - AI Agentic System: Developed RAG-powered AI platform with 3 specialized agents (Materials, Production Orders, Machines) using Next.js, React, and Groq LLM with caching and context optimization
    Java 21Spring Boot 3AWSKubernetesLambdaSQSS3HashiCorp VaultNext.jsReactGroq LLMRAGSQL ServerLiquibase

    Senior Java Developer

    Vodafone

    February 2023 - July 2024
    Cairo, Egypt

    Built core telecom microservices including the Vodafone Cash disbursement platform and contributed to the Ana Vodafone Spring Boot 3 migration.

    • Co-designed and built the Vodafone Cash disbursement application from scratch, collaborating on architecture and microservices design
    • Contributed to migrating Ana Vodafone microservices from Spring Boot 2 to Spring Boot 3
    • Became the go-to engineer for performance issues, profiling slow paths and driving fixes through targeted code reviews
    JavaSpring BootREST APIsMicroservicesJUnitMockitoOracle

    Senior Full Stack Java Developer

    DXC Technology

    February 2019 - February 2023
    Cairo, Egypt

    Delivered enterprise solutions for major clients including Vodafone Germany, Alinma Bank, and Saudi Payments across banking, telecom, and fintech industries.

    • Vodafone Germany: Maintained and stabilized a legacy Java 7 and JSF backend, fixing recurring production issues and reducing incident frequency
    • Alinma Bank: Built full banking platform with Java 8 microservices and Angular 8, covering account management, transactions, and reporting modules
    • Saudi Payments: Developed national payment features using EJB 3 and SOAP, achieving 99.9% uptime
    Java 8SpringAngular 8JSFEJB 3SOAPRESTOraclePostgreSQL

    Senior Full Stack Java Developer

    Etisalat Misr

    February 2018 - December 2018
    Cairo, Egypt

    Migrated the DMA application to Spring Boot and built backend services for the My Etisalat mobile app.

    • Migrated the DMA application to Spring Boot and developed backend services for the My Etisalat mobile app
    • Built RESTful APIs handling subscriber account management and service activation for millions of Etisalat users
    JavaSpringReact NativeREST APIsOracle

    Senior Java Developer

    Direct Orbit for Information Technology Est

    February 2018 - December 2018
    Jeddah, KSA (Remote)

    Built backend integration services and e-commerce platform for the Saudi Arabian retail market.

    • Developed backend integration services using Java and REST APIs for a Saudi Arabian retail platform
    • Built and maintained e-commerce platform serving 2,000+ daily active users with 99.8% uptime
    • Profiled and optimized slow data processing workflows by reworking batch jobs and reducing redundant database calls
    JavaWeb ServicesSOAPRESTMySQL

    Senior Full Stack Java Developer

    Glowstar

    January 2017 - December 2017
    Cairo, Egypt

    Built and maintained modules for an enterprise ERP system and led the migration from EJB 3 to Spring Framework.

    • Built and maintained modules for an enterprise ERP system (banking, general ledger, inventory, invoicing, purchasing)
    • Led the migration from EJB 3 to Spring Framework
    • Architected cloud-native applications deployed on AWS and Azure with containerized services
    • Optimized slow database queries and restructured indexes across multiple client projects
    • Mentored 3 junior developers and established code review practices across the team
    JavaSpringAWSAzureMicroservicesPostgreSQLMongoDB

    Full Stack Java Developer

    Glowstar

    June 2015 - December 2016
    Cairo, Egypt

    Full SDLC ownership from design to deployment, with focus on quality and testing automation.

    • Owned complete SDLC for enterprise applications from design to deployment
    • Wrote efficient, testable Java code with strong test coverage
    • Created technical specifications and integrated components into production systems
    • Built QA procedures and automated testing workflows for the team
    JavaSpringJUnitSeleniumMySQLOracle

    Education & Certifications

    Bachelor of Computer Information Systems

    Phroes Academy • September 2008 – July 2012 • Grade: 3.25

    Technical Expertise

    Java 8-21, Spring Boot 3, AWS, Kubernetes, Microservices

    Eslam SifeEldin

    Principal Software Engineer with 10+ years of experience architecting enterprise solutions for Fortune 500 clients and EdTech platforms. Expert in Java 8–21, Spring Boot 3, microservices, and cloud-native systems on AWS and Kubernetes.

    Giza, Egypt • Open to Remote

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