Java Backend Engineer (Subscriptions & Payments)
Job Description
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The engineers will contribute to Fire TV In-App Purchase (IAP) capabilities and build services responsible for subscriptions, payments, entitlements, and transaction processing. These systems operate at significant scale and need to remain highly available, fault-tolerant, and performant during major traffic spikes, including live sporting events and large content releases.
Responsibilities
- Design and build scalable backend services using Java and Spring Boot.
- Develop high-performance REST APIs and microservices.
- Build backend capabilities for subscriptions, payments, and user entitlements.
- Implement Fire TV IAP purchase and subscription workflows.
- Integrate with app stores, payment providers, and external platform APIs.
- Build workflows covering purchases, renewals, cancellations, refunds, and subscription-state changes.
- Design reliable, idempotent transaction-processing systems.
- Handle retries, failures, reconciliation, and eventual consistency across distributed services.
- Build event-driven and asynchronous workflows using messaging systems.
- Design systems that can handle high throughput and sudden traffic spikes.
- Optimize service latency, throughput, scalability, and infrastructure utilization.
- Improve observability through logging, metrics, tracing, and alerting.
- Troubleshoot complex production issues across distributed services.
- Participate in architecture reviews, code reviews, and technical-design discussions.
Requirements
- Strong programming experience with Java.
- Strong experience with Spring Boot / Spring ecosystem.
- Strong experience designing RESTful APIs and microservices.
- Solid understanding of distributed systems, concurrency, and asynchronous processing.
- Experience with SQL databases such as PostgreSQL/MySQL.
- Experience with NoSQL databases is desirable.
- Experience with caching technologies such as Redis.
- Experience with Kafka or similar event-streaming/messaging platforms.
- Understanding of transaction management, idempotency, and data consistency.
- Experience with AWS or similar cloud platforms.
- Familiarity with Docker, Kubernetes, and CI/CD pipelines.
- Strong production-debugging and performance-optimization skills.
Experience
- 4-7 years of backend engineering experience.
- Strong hands-on Java and microservices development.
- Ability to independently design and deliver backend services.
- Experience working on scalable and distributed production systems.
Benefits
- Best-in-class salary: We hire strong talent and compensate accordingly.
- Proximity Talks: Meet and learn from designers, engineers, product leaders, and AI practitioners.
- Continuous learning: Work with a world-class team and stay close to the latest in AI, engineering, and product development.
- High-impact work: Build AI-first systems and products used at scale by global clients.
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Proximity
View Company ProfileProximity is a global digital engineering and software development firm that builds custom cloud, web, and mobile solutions for high-stakes enterprise applications. Operating across media, sports, fintech, and enterprise tech, the company specializes in complex backend engineering, UI/UX design, AI integrations, and real-time data platforms.
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