Jiseong Oh

Builder & Product Lead

Builder & Product Lead at Metaba | Architecting 2nd-Gen Large Action Models (LAM) for Legacy Enterprise & Interanet Infra. Specialized in AI SaaS and Actionable Agents.

Skills

ReactTypeScriptNode.jsPythonVPSMongoDBNext.jsTailwind CSS

Contact

/jackdanieloh /jiseongoh

Work Experience

My professional journey and contributions

Founder & Product Lead

Metaba Co Ltd

March 2024 - Present

Founded and led an AI company through three pivots. From online community tools to AI creator SaaS to B2B LAM agents—building products, teams, and technical foundations at each stage.

Pivot 2: B2B Enterprise LAM Modal Supplier

2025 Q4 - Present

2nd-generation Large Action Model (LAM) agents specialized in legacy enterprise and intranet infrastructures.

•Achieved $7,000 MRR and $120k ARR projection through B2B client contracts in healthcare and telephony sectors.
•Engineered a high-performance LAM model: Pivoted from cloud-based RAG to Private VDS-hosted CAG (Cache-Augmented Generation) to slash latency and ensure data integrity.
•Optimized operational margins by 75% through in-house sLLM deployment and custom validation frameworks for legacy DB orchestration.

LAMCAG (Cache-Augmented Gen)sLLM OptimizationPrivate VDSLegacy System Orchestration

Pivot 1: All in one AI agentic agent for content creators

2025 Q2 - 2025 Q4

All in one AI agentic agent for content creator, talk to create your own monetization SaaS

•Built and deployed a multi-tenant MVP under unique subdomains, establishing the foundation for our current VPS-centric AI infrastructure.
•Validated the demand for automated 'Zero-to-One' tools by onboarding early creator cohorts and streamlining their technical workflows.
•Bridged the gap between NoSQL data structures (MongoDB) and automated link-customization engines.

Next.jsTypeScriptMongoDBAutomated VPS Provisioning

Start: Personalized Online Community Platform Creation

2023 Q4 - 2025 Q1 (Foundation)

Why is it so hard to own an personal online community platform? Mark had his own back in 2004.

•Demo prototype community release under unique subdomain, achieving +10k MAU
•Collaborated with major MCNs(Sandbox, LolQ) creators to host creator-driven campaigns, +250k SNS impressions.
•Established production-level online community architecture.

ReactPostgreSQLMCN API IntegrationInfrastructure Scaling

Computer Emergency Response Team (CERT)

Republic of Korea Navy

August 2022 - March 2024

Managed cybersecurity infrastructure and network operations for a large-scale military environment. Led network administration, security automation, and regular quality assurance tests.

•Administered firewalls, NAC servers, and Cisco network devices supporting 70,000+ personnel.
•Conducted QA and reliability testing for mission-critical intranet pages, ensuring >95% uptime.
•Developed internal scripts for automation for patching security across key systems.

JavaScriptPythonMySQLJavaScriptNetwork Access Control (NAC)Jupyter Notebook

Frontend Developer - Volunteer

Join Us Korea (NGO)

July 2022

Developed responsive user interfaces and implemented modern web standards. Worked closely with designers to create seamless user experiences.

•Delivered full redesign of the organization’s public blog site, increasing retention by 18%.
•Executed QA testing across content updates and tracked SEO performance.
•Maintained AdSense integration and DevOps on a platform with 15k MAU and 1M+ total visitors.

JavaScriptHTMLCSSTistory