Senior Full Stack Engineer - Android + Go/Java

We are looking for experienced Full Stack Engineers with Android and backend expertise in Go or Java to work on large-scale systems.
The role will be part of the Subscriptions and Payments engineering team and will contribute to building and enhancing Fire TV In-App Purchase (IAP) capabilities, subscription journeys, payment integrations and entitlement workflows.
You will work across Android/Fire TV applications and backend services, building highly scalable and reliable systems capable of supporting millions of users and significant traffic spikes during major live events.
Responsibilities
Design, develop and maintain Android / Fire TV applications and supporting backend services
Build Android features using Kotlin/Java with a focus on performance, reliability and user experience
Develop scalable backend services using Go or Java
Build and integrate APIs supporting subscriptions, payments and entitlement workflows
Implement Fire TV In-App Purchase (IAP) flows including purchases, renewals, cancellations and entitlement synchronization
Integrate applications with app-store APIs, payment platforms and internal backend services
Build resilient workflows capable of handling failures, retries and transaction reconciliation
Design systems to support high concurrency and large traffic spikes, particularly during live sports and major content releases
Optimize application startup, API latency, network usage and overall performance
Work on authentication, device management and user-session flows where required
Implement monitoring, logging and observability across mobile/TV and backend systems
Write maintainable, well-tested production code
Participate in architecture discussions, code reviews and technical design reviews
Collaborate with Android, backend, platform, payments and product teams to deliver features end-to-end
Requirements
Strong Android development experience using Kotlin and/or Java
Good understanding of Android application architecture, lifecycle and performance optimization
Experience developing applications for Android TV or Fire TV is highly desirable
Strong backend development experience using Go or Java
Experience with Spring Boot for Java backend development or common Go web/service frameworks
Strong experience designing and consuming REST APIs
Good understanding of microservices and distributed systems
Experience with SQL databases such as PostgreSQL/MySQL
Experience with NoSQL databases is desirable
Experience with caching technologies such as Redis
Exposure to Kafka or similar messaging/event-streaming technologies
Understanding of asynchronous processing, concurrency and distributed transactions
Experience with AWS or similar cloud platforms
Familiarity with Docker, Kubernetes and CI/CD pipelines
Strong debugging and production troubleshooting skills
Experience
4-7 years of software engineering experience
Strong hands-on Android development experience
Hands-on experience with backend development using Go or Java
Ability to independently own and deliver features across application and backend layers
Experience working on scalable production applications
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 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
About Us
Proximity is the trusted technology, design, and consulting partner for some of the biggest Sports, Media, and Entertainment companies in the world. We're headquartered in San Francisco and have offices in Palo Alto, Dubai, Mumbai, and Bangalore.
Since 2019, Proximity has built high-impact, scalable products used by millions of users every day. Today, we are a global team of engineers, designers, product managers, and experts solving complex problems and building cutting-edge technology at scale.

Work arrangement
Yes