Mid Backend Developer (Java / Kotlin / Spring Boot)

About the role

We are building a fast‑growing professional‑services marketplace in Egypt that connects individuals and businesses with verified consultants for video, in‑person, and on‑call consultations. As a Mid Backend Developer you will own the entire server side of the platform, designing data models, creating APIs, and integrating third‑party services.

Key responsibilities

• Design and implement RESTful APIs using Java/Kotlin and Spring Boot.
• Model and maintain PostgreSQL schemas for users, experts, bookings, payments, and reviews.
• Implement JWT‑based authentication and role‑based access control with Spring Security.
• Integrate Paymob payment gateway, Daily.co video service, and email notification providers.
• Build expert verification workflows, booking engine, and subscription management.
• Set up secure file storage on AWS S3 and write unit/integration tests (JUnit, Kotest, Testcontainers).
• Maintain a clean Git workflow and deploy the application on AWS (EC2, RDS, S3).

Required profile

• 3+ years of backend development experience with Java or Kotlin.
• Strong understanding of Spring ecosystem (MVC, Security, Data JPA, Actuator).
• Hands‑on experience with PostgreSQL schema design and migration tools.
• Familiarity with JWT authentication, role‑based access, and third‑party API integration.
• Basic knowledge of AWS services (EC2, RDS, S3, IAM).

Required skills

• Java
• Kotlin
• Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Spring Boot Actuator
• PostgreSQL
• Flyway or Liquibase
• REST API design
• JWT authentication
• AWS (EC2, RDS, S3, IAM)
• Git
• Postman
• JUnit, Kotest, MockMvc, Testcontainers
• Docker (optional)
• Kotlin Coroutines (optional)
• RabbitMQ or Kafka (optional)
• CI/CD with GitHub Actions (optional)