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Nathaniel Tena

@nathanieltena

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Backend Developer at Wintech deploying backend services on AWS; built real-time gaming transaction systems.

Philippines

Message

At Dowinn Group, I designed and developed RESTful APIs with Spring Boot and NestJS for casino and agent platforms.

I implemented Redis caching, Pub/Sub, and streaming to support real-time transaction updates and event-driven gaming operations.

I handled high-frequency financial transactions with validation and consistency checks, and optimized MySQL queries for high-concurrency workloads.

At Wintech, I handle application deployment using AWS to support reliable, secure, and scalable releases of backend services.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

Wintech

Jul 2026 - Present (3 months)

Handled application deployment using AWS, ensuring reliable, secure, and scalable releases of backend services.

Java NestJS Go AWS Deployment Cloud Infrastructure

Backend Developer (Java / Node.js)

Dowinn Group

Apr 2023 - Jul 2026 (3 years 3 months)

Designed and developed scalable backend systems for casino and agent platforms, focusing on real-time transaction processing, system optimization, and high-concurrency architecture. Implemented Redis caching, Pub/Sub, and streaming mechanisms, and integrated WebSocket and SSE for real-time updates.