Senior Full Stack Engineer - Web + Java

We are looking for strong Full Stack Engineers to work on large-scale systems. Serving millions of users across web, mobile and connected-TV devices. The role will be part of the Subscriptions and Payments engineering team and will contribute to building Fire TV In-App Purchase (IAP) capabilities, subscription journeys, entitlement workflows and platform integrations. You will work on highly scalable consumer-facing systems where performance, reliability, low latency and seamless user experience are critical, particularly during high-traffic events such as live sports and major content releases. Responsibilities Design, develop and maintain scalable full-stack applications using Java and modern web technologies . Build frontend and backend capabilities supporting subscriptions, payments and entitlement management . Develop responsive, performant user experiences using JavaScript/TypeScript and React or similar frameworks . Build and integrate REST APIs and microservices for subscription and payment workflows. Work on Fire TV IAP integration , including purchases, renewals, cancellations and entitlement synchronization. Integrate with external payment providers, app stores and platform APIs. Build resilient systems capable of handling large traffic spikes and high concurrent usage . Improve application performance, availability, monitoring and reliability. Handle failure scenarios, retries, reconciliation and user-state consistency across distributed systems. Collaborate with backend, frontend, product and platform teams to deliver features end-to-end. Write high-quality, maintainable and well-tested production code. Participate in design reviews, code reviews and architecture discussions. Requirements Strong experience with Java, Spring Boot and RESTful services . Strong frontend experience with JavaScript/TypeScript, HTML and CSS . Experience with React, Next.js or similar modern frontend frameworks . Strong understanding of microservices and distributed systems . Experience building high-scale consumer-facing applications. Experience with SQL/NoSQL databases. Exposure to caching systems such as Redis . Experience with messaging/event-streaming technologies such as Kafka is preferred. Experience with cloud platforms such as AWS . Familiarity with Docker, Kubernetes and CI/CD. Good understanding of observability, monitoring and production debugging. Experience 7+ years of software engineering experience. Strong system-design and architecture experience. Experience designing systems for high concurrency, large-scale traffic and high availability . Ability to drive complex technical implementations end-to-end. Experience mentoring engineers and influencing engineering best practices. Note: This is a 6-month contractual role. Benefits Best-in-class salary: We hire strong talent and compensate accordingly. Proximity Talks: Meet and learn from designers, engineers, product leaders, and AI…