Sr. Java Developer

Role: Sr. java Developer (Spring Boot – In-App

Purchases Platform

Job Description:

• We are developing a secure, multi-tenant backend platform to manage In-App Purchase (IAP) subscriptions across iOS
• and Android applications. The platform will feature real-time analytics, robust security, vendor management, and seamless
• integration with Apple and Google services.
• The system leverages Spring Boot 3.3.5, Java 21, Gradle (Kotlin DSL), and MariaDB to ensure performance, scalability, and

maintainability.

• Technical Environment
• Language: Java 21
• Framework: Spring Boot 3.3.5
• Build Tool: Gradle (Kotlin DSL)
• Database: MariaDB
• API Documentation: Springdoc OpenAPI (Swagger UI)
• Authentication: JWT (JSON Web Token)
• JSON Processing: Jackson, Gson
• Job Scheduling: Quartz
• Testing: JUnit, Mockito
• Code Coverage: Jacoco
• Logging: Logback

Responsibilities:

Key Responsibilities

• Design, develop, and maintain the backend platform for in-app purchase subscriptions.
• Implement secure, multi-tenant architecture with a focus on scalability and reliability.
• Integrate with Apple App Store and Google Play Store for IAP validation and webhook event handling.
• Develop robust authentication and role-based access control using JWT.
• Implement background job scheduling (Quartz) and ensure resilience with retries and circuit breakers.
• Collaborate with cross-functional teams for seamless integration of analytics and reporting.
• Ensure code quality, test coverage (Jacoco), and documentation (Swagger UI).

Requirements:

• Must-Have Skills & Experience
• 5+ years of backend development experience, with Spring Boot 3.x and Java 17+ (Java 21 preferred).
• Strong knowledge of multi-tenant systems and security best practices.
• Hands-on experience with Apple/Google IAP integrations or event-driven webhook systems.
• Expertise in JWT-based authentication and secure API design.
• Proficiency with Quartz, JUnit, Mockito, Jacoco, and Gradle (Kotlin DSL).
• Experience in real-time analytics pipelines and event-driven architecture.
• Excellent communication and documentation skills.

Nice-to-Have

• Experience with CI/CD pipelines, Docker, Kubernetes.
• Knowledge of payment security standards (PCI-DSS).
• Exposure to analytics dashboards or reporting modules.

Candidate Expectations

• Demonstrated success in architecting and delivering complex backend systems.
• Ability to make informed architectural decisions and communicate trade-offs effectively.
• Collaborative mindset with ownership of deliverables.

Preferred Skills:

• Java Springboot
• hiredevelo

Job Type: Contractual / Temporary
Contract length: 6 months

Pay: ₹100,000.00 - ₹110,000.00 per month

Work Location: In person