Experience

Work

Company	Title	Start	End	Type
OpenAI	Senior Engineer, User Ops	2025-09		Permanent
Cybereason Inc.	Software Engineer (Backend) Site Reliability Engineer	2024-10	2025-08	Permanent
Eukarya Inc.	Software Engineer (Backend)	2024-10	2025-08	Freelance
LayerX Inc.	Site Reliability Engineer	2024-04	2024-09	Freelance
enechain Corporation	Software Engineer (Platform) Site Reliability Engineer	2023-11	2024-10	Freelance
Industry Technology Inc.	CTO Software Engineer (Backend)	2019-04	2024-09	Permanent
Algomatic Inc.	Software Engineer (Platform)	2023-08	2024-04	Freelance
Gunosy Inc.	Data Engineer	2018-04	2019-06	Permanent
ZUU Co., Ltd.	Software Engineer (Backend)	2018-01	2018-03	Intern

Project

Company	Project
OpenAI	OA1. I led the development of an agentic monitoring system for the API platform, which helped teams detect customer-impacting issues earlier and start incident response faster. OA2. I led the development of an incident notification system for enterprise customers, which improved support quality for top 100 enterprise customers.
Cybereason	CR1. I designed and developed custom metrics to improve observability across 3,000 servers, which cut problem detection time for enterprise customers. CR2. I troubleshot and fixed a critical server issue with 2,000 concurrent threads, which resolved crashes affecting an enterprise customer. CR3. I fixed a critical bug in the core API that required thorough testing across various versions and feature flags, which restored the correct incident status for millions of endpoints.
Eukarya	EU1. I developed a processor that compiles user scripts into WebAssembly and executes them on a WASM runtime, which enabled users to customize workflows efficiently. EU2. I developed a real-time logging system with efficient storage and caching, which enabled users to monitor the workflow status instantly from the UI.
LayerX	LX1. I developed a scalable notification system, which helped a financial institution track workflow status and meet strict security standards.
enechain	EN1. I developed a generator tool for Kubernetes manifests and Terraform configurations for microservices, which reduced initial deployment time. EN2. I set up a local development environment by deploying Telepresence to the Kubernetes cluster, which accelerated local development for highly dependent microservices.
Industry Technology	IT1. I designed SLIs/SLOs and developed custom metrics and traces to improve reliability, which built customer trust and won us a major enterprise contract. IT2. I developed a group chat service and notification system that supports text, photos, videos, and PDFs, which helped increase user engagement and productivity. IT3. I solved a performance issue with the database by optimizing indexes and queries, and by using caching, which reduced slow query occurrences. IT4. I migrated from monolith to microservices architecture using a BFF layer to ensure no downtime, which improved system scalability and reduced database load. IT5. I led the migration from MySQL 5.7 to 8.0 and managed an incident during the process, which improved query performance.
Algomatic	AL1. I developed a serverless training pipeline for fine-tuning LLMs, which improved compute resource utilization and reduced training costs.
Gunosy	GU1. I analyzed data from millions of users and designed A/B testing, which improved 7-day retention.

Table of contents