OpenSearch · Support Automation · AI Workflow

A support engineer who turns repeated troubleshooting patterns into reliable tools

AWS Cloud Support Engineer and OpenSearch SME with experience across analytics workloads, enterprise data platforms, mobile apps, backend systems, and AI-assisted workflows.

Profile

Yongtak Kim

Role: AWS Cloud Support Engineer / OpenSearch SME
GitHub: ytkim4558
LinkedIn: Yongtak Kim
Korean full portfolio: Portfolio

Experience

Career Summary

Amazon Web Services Cloud Support Engineer II / Analytics · 2022-Present

Provide technical support for AWS Analytics services, especially Amazon OpenSearch Service.
Troubleshoot customer issues involving distributed systems, analytics workloads, indexing, query behavior, and operational incidents.
Collaborate with AWS service teams and internal engineers for escalation, mitigation, and long-term resolution.

CJ OliveNetworks Data Platform Senior Engineer · 2019-2022

Worked on enterprise data platform migration and operation.
Contributed to IBM Cloud Pak for Data and OpenShift migration work for a large media data platform.

G.Bike / Teamnova / DioTek / Digital Aria

Developed Android/iOS app features, backend APIs, database changes, admin tools, OCR and image-processing algorithms, and rendering test automation.

Automation

Support Automation

MCP workflows connecting Slack, Outlook, wiki knowledge, ticket search, and local tools.
Support-agent persona design for customer-response drafting and troubleshooting guidance.
Case aging triage using LLM summaries, missing-step detection, internal-note review, and escalation-readiness checks.

AI Tools

Selected Tools

claude-resume: LLM-summary-based TUI for finding and resuming Claude Code sessions.
codex-resume: Windows-friendly TUI for searching and resuming OpenAI Codex CLI sessions.
linkedin-posting-mcp: user-approved LinkedIn posting workflow tooling.

Background

Common Thread

My career started in mobile app and backend product development, expanded into image processing and data platforms, and now focuses on AWS analytics support and AI-assisted support engineering workflows.