Sean Wagner

Designed and developed scalable full-stack applications by combining Spring Boot backend services with Android and web frontends, enabling real-time user experiences across platforms. Architected high-performance RESTful APIs and socket-based communication for real-time multiplayer interactions and low-latency data exchange in distributed environments. Built modular backend services in Java/Spring Boot with secure HTTPS, and integrated Java with native C components via JNI to accelerate compute-intensive operations. Implemented advanced multithreading and concurrency models to optimize resource utilization under heavy workloads. Deployed cloud-based backends on AWS for high availability and fault tolerance, and engineered real-time data pipelines integrating NMEA 2000/0183 protocols for hardware-software integration. Led secure communication layers and collaborated in Agile environments.

Developed backend-integrated mobile applications, enabling seamless Android-server communication. Designed and consumed RESTful APIs for real-time data exchange, improving responsiveness. Re-architected geolocation and sensor-driven systems, improving accuracy and efficiency. Migrated legacy Java code to Kotlin and modernized backend interactions. Integrated AWS-based services to support scalable data processing, storage, and synchronization. Implemented secure authentication flows and improved system performance through system-level optimizations. Collaborated with cross-functional teams in Agile environments to deliver scalable and maintainable solutions.

Led development of large-scale full-stack systems combining Android applications with backend services, supporting millions of active users. Designed and implemented scalable backend architectures and API-driven systems for high-volume data processing and ad delivery platforms. Built distributed systems handling telemetry and analytics data, ensuring high availability and performance across services. Developed modular SDK platforms with dynamic configuration, improving flexibility and reducing integration complexity. Optimized backend and mobile system performance through efficient data handling and multithreading, and implemented data privacy mechanisms including GDPR across backend and client applications. Deployed cloud-based AWS solutions to support scalable storage and processing, and mentored teams across global stakeholders.