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Sara Selim

@saraselim

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I build reliable Java and Spring Boot payment platforms, cloud-native backends, and modernized legacy systems.

Egypt

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I've built payment and banking platforms at Integrant, Evolvice, Boost, Masria Digital Payment, and Fawry Integrated Systems. My work spans high-scale Java backends, cloud-native applications, payment gateways, QR payments, Open Banking, and ISO8583 integrations.

At Evolvice, I delivered Stripe subscription integration and EU tax validation integrations for BZST and BMF, while improving modularity through shared libraries, parent POM structure, and centralized dependency management. At Boost, I developed services for instant merchant payments, payment links, push payments, and Yapily-powered Open Banking integrations.

I'm focused on reliable, scalable systems from requirements and architecture through testing and release. I also modernize legacy platforms, improve observability with Sumo Logic and Observe, and provide technical guidance through code reviews.

Experience

Work history, roles, and key accomplishments

Current

Principal Software Engineer

Current

Integrant, Inc.

Aug 2024 - Present (2 years 1 month)

Design and deliver end-to-end software solutions for global clients, owning the full feature lifecycle from requirements analysis to release. Build AI-powered tools for workflow automation and improve system monitoring using observability tools.

Java Spring Boot AI Workflow Automation Observability SumoLogic Observe Code Review Technical guidance

Senior Java Software Engineer

Evolvice GmbH

Dec 2022 - Aug 2024 (1 year 8 months)

Backend developer (outsource) in eClear. Delivered Stripe subscription integration and implemented EU tax validation integrations (BZST, BMF) to ensure VAT compliance.

Spring Boot Stripe ArgoCD Spring Cloud Config Liquibase PostgreSQL Kafka SonarQube OpenAPI Jira

Senior Software Engineer

Boost

Apr 2022 - Dec 2022 (8 months)

Developed a payment platform enabling instant merchant payments through QR payments, payment links, and push payment and Open Banking integrations. Designed and implemented backend services and integrated Open Banking services using Yapily APIs.

Java Spring Boot Gradle Docker Flyway PostgreSQL AWS AWS ECS ECR Cloudwatch Route 53 RDS Keycloak Firebase Cloud Firestore Open Banking Yapily

Software Engineer

Masria Digital Payment

Nov 2020 - Apr 2022 (1 year 5 months)

Designed, implemented, and tested business requirements and client integrations. Configured middleware solutions and supervised new employees.

Spring Boot Spring Security Keycloak SmartVista MySQL ISO 8583 Swagger SVIP

Software Engineer

Fawry Integrated Systems

Jul 2017 - Nov 2020 (3 years 4 months)

Contributed to the development and enhancement of FAWRY's core Operations & Administration Console (OPC). Modernized legacy applications and improved code quality through refactoring and design patterns.