Full-stack engineering,
shipped end to end.
Forward Deployed Engineering & LLM Production Systems
Vemapro embeds directly with product and business teams to scope, build, and ship — from first prototype to production. Backend systems, modern frontends, payments infrastructure, and LLM-powered systems running in the real world, not in a demo.
- years shipping production software
- 7+
- years shipping production software
- backend to frontend, one owner
- Full-stack
- backend to frontend, one owner
- production AI systems, not demos
- LLM-ready
- production AI systems, not demos
Full ownership, not just execution.
Vemapro is an independent full-stack engineering practice, built around working embedded with product and business teams — not behind a ticket queue. The work spans backend systems, modern frontends, payments infrastructure, and the kind of scope and trade-off calls that usually sit with a product owner.
Most of what ships starts from real usage data and direct conversation with stakeholders, not a finished spec — then gets carried through to production, end to end, without handing it off halfway.
More recently, that includes designing and running LLM-powered systems in production — governed write access, human-approval gates, and a first-hand understanding of how model behavior actually affects the product experience.
Based in Incheon, South Korea, working with teams anywhere — available for embedded freelance engagements and technical consulting.
What I can own for you
I work best embedded — close to the product, the data, and the people making the calls — not behind a ticket queue.
Full-Stack Product Engineering
End-to-end ownership of features across modern backend services and frontends — from first prototype to production rollout.
LLM & AI Production Systems
Design and ship LLM-powered workflows that run in production with governed write access, human-approval gates, and real audit trails — not demos.
Payments & Platform Integrations
Multi-currency payments, payouts, and reconciliation, plus partner and B2B API integrations.
Performance & Growth Engineering
Core Web Vitals, SEO/SSR at scale, and A/B-test-driven experimentation to move real product metrics, not just Lighthouse scores.
Embedded Technical Consulting
De facto product ownership when you need someone to interpret data, make scope calls, and drive delivery — not just implement a spec.
AI in production, not demos
LLMs wired into real data and review workflows — with governed write access and human-approval gates, not one-off scripts.
Data-Grounded LLM Interfaces
Real product and analytics data piped into an LLM-driven interface — chat, automated reporting, and MCP servers for agentic coding sessions. Production write access always governed by read-before-write checks and audit-trailed patches.
Browser Agents for QA & Triage
LLM-driven browser agents that review real user sessions, confirm root cause behind frustration signals, and file scoped, ready-to-action bug reports — validated against live production traffic.
Automated Root-Cause Pipelines
Monitoring and log data connected to an LLM for automated root-cause analysis, producing structured, ready-to-review pull requests as output.
Toolbox
Languages & Frameworks
Frontend
Backend
Databases
Cloud & DevOps
Payments & Integrations
Analytics & Quality
Let's build something.
Based in Incheon, working with teams anywhere. Tell me about your project — I usually reply within a day.