Jongmin Lim
Cloud Specialist Engineer
Seoul
Summary
Over 25 years of Enterprise software experience (technical support, presales and consulting) Over 11 years of Cloud Computing(Hybrid) experience for presales and architect Various experiences in open source on Cloud(or various Virtualization environments(Gen, Vmware, HVX(Oracle Ravello), KVM, Docker Container, Kubernetes, Prometheus, Grafana, LangChain, LangGraph, Chroma DB) Excellent skills in Middleware Technical Supporting, troubleshooting, performance tuning, Architecting complex cloud infrastructure, Application Modernization, Generative AI Excellent in technical support, pre-sales, Cloud knowledge, presentation ability, interpersonal and communication skill
Overview
26
26
years of professional experience
12
12
Certifications
Work History
Principal Cloud Engineer, Blockchain Champion and Evangelist in Oracle Korea
Oracle Korea, Ltd.
06.2011 - Current
- Major roles and responsibilities
- Acted as the product lead for OCI AI, Application Development, and Observability & Management (O&M) services within the Cloud Specialist Engineering team.
- Provided technical leadership and field support for customers across various industries, including finance, manufacturing, and so on.
- Conducted solution architecture guidance, performance tuning, and migration support for OCI workloads.
- Led technical enablement through bootcamps, seminars, and workshops on OCI native services, DevOps, and low-code platforms (e.g., APEX).
- Collaborated on AI TF initiatives, implementing cloud-native prototypes using OCI Functions, Logging, and LangGraph.
- Delivered customer-focused troubleshooting, system integration, and DR architecture design support.
- Supported Oracle Korea marketing events as a technical speaker and product evangelist.
- Participated in internal Data Platform TF workshops, contributing to data visualization solutions using OCI Logging Analytics.
- Cloud native with Kubernetes , Observability and management(APM, Logging analytics, etc)
- Securing DevOps, Blockchain, Microservices, Container technical leader in FSI CE team
- Middleware Cloud presales in FSI team
- Helping customers modernize their applications(Microservices or Cloud native)
- Blockchain Evangelist in Oracle Korea
- - Lead Blockchain deals and Customer training, Blockchain speaker in Oracle Korea
- - Consulting Blockchain infrastructure with HyperLedger Fabric(Open Source Blockchain)
- Cloud Presales consultant and technical support for AppDev(aPaaS) (Oracle Blockchain Platform, WebLogic on OCI, OKE(Oracle Container Engine for Kubernetes, WebLogic/Coherence Operator), OCCS(Oracle Container Cloud Service), Verrazzano(Hybrid container management tool) and OCI(Compute, Storage, Network), Oracle Visual Studio Code(CI/CD)
- Oracle Middleware presales consultant and technical support for RUEI(Real User Experience Insight provides you with end user monitoring solution is based on network packet monitoring, RUEI Champion in Korea), Enterprise Manager, WebLogic, Web Tier and etc.
- Major Achievements
- - Successfully led the first JCS to WebLogic for OCI migration project for SK Chemicals.
- - Resolved performance bottlenecks in Woori Bank's mobile banking by tuning JVM code cache size for high CPU usage mitigation.
- - Enabled real-time alerting and monitoring for Samsung Electronics DS HPC, including a VM down-time detection system and DR guidance.
- - Delivered a production-ready GPU monitoring solution using Grafana for HMM.
- - Built custom OCI Functions code to support monitoring system integration for Samsung Electronics MSP.
- - Provided gRPC and NLB testing support for Smilegate, enabling efficient microservice communication architecture.
- - Implemented financial SOC monitoring system for Daishin Securities using OCI VTAP.
- - Developed a LangGraph-based log analysis prototype for OCI Cloud Guard within the AI Task Force.
- - Resolved connection issues between Heungkuk Fire Insurance’s legacy JEUS system and Autonomous Database.
- - Supported security log processing and alert configurations using OCI Functions and Cloud Guard for KakaoBank.
- - Presented and led sessions at Oracle marketing events including CloudWorld Seoul, Busan Tech Forum, and developer meetups on topics such as OCI APEX, DevOps, and observability tools.
- - Development 1st Winner in Korea’s FY21Q4 Madhacks competition(OCI monitoring services, satisfy customers’ needs who are familiar with Grafana)
- - 1st Winner (a member of Edge of Tomorrow team, E-contract Blockchain platform)in APAC at Oracle Madhacks(Oracle Global Hackathon)
- - Korea Post Finance’s Next-generation System: Guide and Technical Support for DevOps team(App deployment with WebLogic K8s operator on OpenShift environment)
- - Closed deal for Cloud Service Provider selection(Customer site: NH bank)
- - Performed HPC provisioning part of the BMT items successfully(Programming with Python, Terraform script)
- - Increased awareness through various customer presentation and education for Oracle cloud (for PaaS, IaaS) : GS Home shopping, Seoul datacenter, Samsung well story, National IT Industry Promotion Agency and etc.
- - Win stories for Cloud :
- Dongwon Homefood : Technical support and deliver for first Cloud PaaS deal(Java Cloud Service) in Korea
- SK Hynix : Post sales for Oracle Cloud : Container Cloud, Oracle Management Cloud
- - Closed deal for ExaLogic (Middleware migration for Samsung Heavy Industries, Korean GAS)
- - Closed various deal for Enterprise manager (Customer sites: KJCCS, E-Mart, Korea GAS, Military Man Power Administration, Korea Public Procurement Service, Woori bank) → Performed various technical support, performance analysis and consulting for RUEI
- - Military Man Power Administration: Presales and technical support(PoC) for ExaLogic, Enterprise Manager(RUEI)
- - Policy agency: Closed deal through presales and technical support for Enterprise Manager and ExaLogic(WebLogic) product
- - Got a Korea Good Software Certification (for WebTier and WebLogic 12c)
Team Manager, APM performance diagnostics team
Exem
03.2009 - 05.2011
- Major roles and responsibilities
- - APM performance diagnostics, and product is a team of Pre-sales activities
- Major Achievements
- - Seoul Guarantee Insurance: Performed diagnostic, performance consulting for the production systems
- - EntoB : Performed diagnostic consulting with APM(InterMax) for fixing the memory leak
APM manager, Financial Infrastructure Solutions Division
TmaxSoft
03.2004 - 02.2009
- Major roles and responsibilities
- - Performed customer technical support and educated about APM and ITSM Technical Consulting for the customers
- - Performed benchmark test for APM (Sysmaster)(Hana bank, Ministry of national defense etc.)
- - Performance tuning for application and WAS
- - Performed operational support, best practice troubleshooting, monitoring, capacity planning, and maintenance.
- Major Achievements
- - Hyundai securities : Performed a successful system(delivered Sysmaster for Profame TP) with support for open contributions
- - KRX : Performed solving the problem through troubleshooting such as JVM crash (Sysmaster for JEUS)
- - Samsung fire : Support system open to improving customer satisfaction (Sysmaster for anylink)
- - Seoul Guarantee Insurance : Offered improved system performance through resolving CPU bottleneck of DB structures (Profame java)
- - KICC : supported for a successful open contribution system(Sysmaster for Profame, Anylink, WAS)
- - KT IPTV : Performed measuring the total IPTV systems through capacity planning consulting for considering the increase in user capacity and scalability (for 2 months)
TA(Technical Architect), Oracle ERP Team
NNI Systems
12.1999 - 02.2004
- Major roles, responsibilities and Achievements
- - Performed Built HR ERP systems in LG (Electronics, Philips LCD) Corporation
Education
Bachelor Science - Mathematics
SUNMOON UNIVERSITY
02.2000
Skills
Native in Korean and Intermediate in English
Certification
Oracle Cloud Infrastructure 2024 Generative AI Professional
OTHERS
Military Service discharged, Korean Army Mar. 1994 – May. 1996
Timeline
Principal Cloud Engineer, Blockchain Champion and Evangelist in Oracle Korea
Oracle Korea, Ltd.
06.2011 - Current
Team Manager, APM performance diagnostics team
Exem
03.2009 - 05.2011
APM manager, Financial Infrastructure Solutions Division
TmaxSoft
03.2004 - 02.2009
TA(Technical Architect), Oracle ERP Team
NNI Systems
12.1999 - 02.2004
Bachelor Science - Mathematics
SUNMOON UNIVERSITY