Eslam O.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Senior & Principal Full Stack Software Engineer with 8+ years of experience designing, architecting, and scaling high-throughput enterprise systems across Banking, Fintech, Education, and E-Commerce.Specialized in Java/Spring ecosystems, reactive microservices, event-driven architectures, and complex BPM workflow engines (Camunda, Kogito, BPEL). I help clients modernize legacy platforms, build robust backend APIs, and deploy cloud-native applications on Kubernetes and OpenShift. CORE TECHNICAL EXPERTISE: Languages: Java (8/11/17), TypeScript, JavaScript, Groovy, SQL Backend & Frameworks: Spring Boot, Spring Security, Vert.x, Quarkus, Hibernate/JPA, RESTful APIs Workflow & BPM: Camunda, Kogito, jBPM, BPEL, Alfresco ECM Event-Driven & Messaging: Apache Kafka, Kafka Streams, Apache NiFi, Infinispan Databases: PostgreSQL, MySQL, MS SQL Server, Oracle, MongoDB, Redis Cloud & DevOps: Red Hat OpenShift, Kubernetes, Docker, AWS (Cognito), CI/CD (GitLab, Jenkins) Security & IAM: OAuth2, OpenID Connect, Keycloak, JWT, AWS Cognito. WHAT I CAN DO FOR YOUR PROJECT: Enterprise Backends & Microservices: Architect scalable, resilient, and high-concurrency backend applications using Java 17, Spring Boot, and Vert.x. Workflow Automation & BPM Integration: Model, automate, and orchestrate complex business/financial processes using Camunda, Kogito, and Apache NiFi. Legacy Modernization: Refactor legacy systems (JSP/Struts) into modern, containerized microservices running on Docker, OpenShift, or Kubernetes. Security & Identity Management: Implement enterprise IAM solutions using Keycloak, OAuth2, and Spring Security. SELECTED INDUSTRY HIGHLIGHTS: Banking & Fintech: Led full-stack engineering for core digital retail banking platforms (Bank Albilad) and automated banking/funding pipelines. Education & Governance: Engineered compliance and school management systems for Australian institutions and dynamic faculty portals across the Middle East. Enterprise Content Management: Customized large-scale archiving systems (Jupiter, Alfresco) handling massive document metadata and security policies. HOW WE CAN WORK TOGETHER: Whether you need an experienced engineer to build an event-driven system from scratch, integrate a BPM workflow engine like Camunda, or jump into an existing enterprise team to accelerate delivery—I am available for both project-based and long-term contracts.