Platform Engineer
Building internal developer platforms and infrastructure automation in a banking environment
I'm Patchara. I lead development of KInfra Provisioning Center and act as its product owner, an internal developer platform at KBTG that turns a multi-day, multi-system manual provisioning process into self-service infrastructure requests.
About Me
I work on infrastructure automation and internal tooling. At KBTG (via MFEC) I own KInfra Provisioning Center end to end - from requirements gathering to the architecture decisions to the Go services and admin plane that run it.
Before this project, I spent two years building the automation layer entirely in VMware vRO using JavaScript - treating it as a backend runtime rather than a scripting tool. That included an async task queue with worker execution, lock and release semantics for concurrent runs, and configuration elements used as a persistence layer. I also built a task runner engine using Strategy, Registry, Decorator, Worker Pool, and Repository patterns, which is still how I approach system design.
I lead requirements gathering, run daily coordination and direct backlog work for two other engineers, and work with the Network, PID, and Platform teams to automate work that used to be done by hand.
Outside of work I run a Proxmox homelab (Immich, Pi-hole, Plane, K3s, Caddy, Tailscale) as a place to try infrastructure tooling before I use it at work.
Technical Skills
Languages
Backend & Data
Infrastructure
Platform
Frontend
Featured Projects
KInfra Provisioning Center
Internal Developer Platform
Engineer and product owner for an internal developer platform that replaces a manual ServiceNow to Excel to vRA relay, which previously took days per request, with a self-service system for VM and OpenShift namespace provisioning.
Highlights
- Self-service request platform supporting multiple resources in one submission, with templates for clustered databases and clustered OpenShift namespaces
- Admin plane for infrastructure standards: network schemas, versioned software catalog, OS mount and disk standards, and default agent install rules
- Architected the vendor abstraction layer, task orchestration engine, and Resource Schema Registry
- On approval, the RITM is created, tasks are generated and run automatically, through to a ready-to-use VM or namespace
Role: Platform Owner and Engineer
Cross-Team Infrastructure Automation
Banking Infrastructure
Automated infrastructure workflows for several teams: Network (F5 load balancing), PID (CyberArk), and Platform (Linux and Windows decommissioning). Built in VMware vRO with JavaScript, pushed well past normal vendor usage: an async task queue with worker execution, lock and release semantics for concurrent runs, and configuration elements used as a persistence layer. Those teams now handle exceptions rather than running the work by hand.
- Cut manual provisioning and decommissioning effort by an estimated 90%
- Automated VM lifecycle tasks including IP reservation, backup jobs, patching, network configuration, and disk and filesystem setup
- Built error handling and handoff so anything outside the automated path routes to the team that owns it
- Day-2 catalog for software installation after provisioning
Role: Automation Engineer
Personal Homelab
Infrastructure · Ongoing
Proxmox VE homelab used for hosting personal services and for trying infrastructure-as-code and platform tooling hands-on.
- Immich, Pi-hole, Plane, K3s, Caddy, Tailscale - all self-hosted
- Testing ground for Terraform, K3s, and container tooling
Role: System Administrator
TicketBox
Enterprise Software
Request management and workflow automation system built as a ServiceNow alternative for enterprise clients.
- Leading full-stack development for enterprise clients
- Implementing complex workflow automation features
Role: Full-Stack Developer
TeleHealth Platform
Healthcare Technology
Telemedicine platform connecting patients with healthcare providers through video consultations and prescription management.
- Built responsive web interface for cross-device compatibility
- Implemented real-time video consultation functionality
Role: Frontend Developer
Professional Experience
Software Engineer
MFEC Public Company Limited · on-site at KBTG
Bangkok, Thailand
Engineer and product owner for an internal developer platform covering VM and OpenShift namespace provisioning, decommissioning, and infrastructure automation across several teams.
- Own the architecture decisions across the platform: vendor abstraction layer, task orchestration engine, Resource Schema Registry
- Gather requirements directly from stakeholders, run daily coordination meetings, and direct backlog work for two other engineers without formal management authority
- Automated provisioning and decommissioning workflows for the Network, PID, and Platform teams, cutting manual effort by an estimated 90%
- Set up the team's engineering practices: spec-driven development, mandatory merge request review before merge, and CI running go vet, golangci-lint, go test -race, and go build
- Made the case internally for moving from vendor workflow tooling to a purpose-built platform, and took ownership of the resulting project
Let's Connect
I'm interested in talking with teams working on platform engineering, developer tooling, and infrastructure.
Get in Touch