Senior Software Engineer

Designed and scaled a real-time chat system for more than 25,000 concurrent users and 500,000 registered users. Built a horizontally scalable Socket.io cluster using a Redis adapter, enabling consistent session routing, low latency, and high availability across replicas.

Improved backend throughput by 60%, reducing a Lambda workflow from 16–21 seconds to 1–2 seconds through service-boundary optimization, efficient data-access patterns, and database tuning. Redesigned PostgreSQL indexing and query strategies, reducing p95 API response times from over 800 ms to under 400 ms.

Developed an Amazon S3 pre-signed URL upload pipeline that eliminated server-side file proxying and reduced server load by approximately 80–90%. Stabilized an AI-powered conversational platform using NestJS, AWS Bedrock, Redis, and Socket.io by resolving LLM orchestration, state-transition, and real-time streaming issues.

Migrated a real-time game-state synchronization layer from Node.js and TypeScript to Java with Spring and Netty. Architected WebSocket infrastructure that achieved sub-100 ms latency for more than 5,000 concurrent active players, with Redis-backed session management for stable state delivery during traffic spikes.

Unified MongoDB write batching, asynchronous notifications, and immediate Socket.io replies through a Kafka event pipeline. Implemented persistent topics, consumer-group failover, and dead-letter queue handling to achieve more than 99.9% delivery reliability across over 100,000 daily transactions.

Improved MongoDB query performance by 45% through schema refactoring, index redesign, and API-flow improvements. Redesigned Jenkins and GitLab CI/CD pipelines, standardizing build, test, and release stages and reducing deployments from approximately 5–10 minutes to 1–2 minutes.

Owned technical delivery across three to four concurrent client projects within a five-person engineering team. Managed implementation, code review, release coordination, and delivery quality across project work.

Delivered full-stack features using React, React Native, Next.js, and Node.js while maintaining sprint velocity across multiple engagements. Introduced structured QA practices, regression workflows, and pre-merge review gates that reduced post-release defects by approximately 15%.

Established Git branching strategies and streamlined CI/CD workflows, improving release reliability and reducing merge conflicts across the team.

Co-founded a three-person student technology collective and delivered 13 local client web projects end-to-end without senior oversight. Built practical ownership across project delivery, engineering implementation, and client-focused development.

Worked across React, Node.js, Python, React Native, Go, and AWS, establishing a cross-domain foundation in full-stack and backend engineering. Managed projects involving more than eight technologies.

Completed university engineering research projects involving a voice-controlled robot with computer vision and a servo-driven finger gesture-control system. Combined NLP, embedded systems, computer vision, and robotic control into working prototypes.

Completed a Bachelor of Engineering degree in Electronics, Communication and Information. Engineering projects included a voice-controlled robotic arm using computer vision and NLP, and a computer-vision-based servo-driven finger gesture control system.