Now buildingitcore.dev

System Engineer · Product Builder

I keep companies runningand build the softwarethey run on.

→ IT Core

From firewalls and servers to Odoo ERP and full-stack SaaS — I own production systems end to end. Right now I'm building IT Core, a help desk platform for companies worldwide.

Dolgion
Open to international remote work
11companies supported
Odoo 19ERP migration
6sites shipped

Flagship product · Live in production

IT Core

Every IT request, handled in one place.

IT Core is a multi-company IT help desk and device-inventory platform I designed, built and run end to end. Staff ask IT for help from a Windows app, a phone or a browser; IT teams get tickets, chat, live PC health, announcements and reports in one place.

sup.itcore.dev
Tickets live
#1042Printer on the 2nd floor is not printingOpen
#1043New hire laptop setupIn progress
#1044Outlook password resetResolved
#1045VPN drops in the warehouseOpen
IT
On my way, 5 minutes 👍
0Languages — MN · EN · 中文
0 minPC health check-ins
0+Releases shipped in 4 weeks
$0Plans from / month

Tickets

Status, priority, assignment, comments and attachments with previews — no request gets lost.

Chat & announcements

Messenger-style chat, group chats, and admin announcements that pop up on every PC with read receipts.

ITCore Sentinel agent

A Windows monitoring agent enrolls each PC with a token and reports health telemetry — telemetry only, never remote commands.

Self-updating desktop app

Electron app in the tray with a Call-IT button that works offline, installed from a USB kit in a minute.

Secure multi-tenant core

Company isolation, 4 roles, scrypt hashing, HttpOnly sessions, CSRF checks and login rate limits — covered by tests.

Reports & billing

First-reply and resolve times per technician, plus automatic invoices in USD, MNT and CNY from today's rate.

ReactViteCloudflare WorkersNeon PostgreSQLR2ElectronNode.jsi18n

System Engineer · What I actually do

The servers, cameras, networks and PCs that ~11 companies run on — I keep them up.

As System Engineer I'm the person who gets called when anything with a power cable stops working — and the one who makes sure it doesn't happen again. Server room to front desk, it's my responsibility.

01

Servers — Dell PowerEdge

Keep the Dell PowerEdge R740 / R750 fleet safe and healthy: replace and reinstall SSDs and HDDs, reinstall operating systems, run VMware ESXi hosts and watch uptime.

Dell R740Dell R750SSD / HDDVMware ESXiWindows ServerLinux
02

CCTV & NVR cameras

Install, configure and maintain NVR camera systems across sites — keeping recording, storage and remote viewing working around the clock.

NVRIP camerasRecordingRemote view
03

Network services up & running

Keep the network alive for every company: Check Point firewall, VPN, NAT, routing, Grandstream GWN Wi-Fi and switches managed through GWN.Cloud, printers and IP telephony.

Check PointGrandstream GWNGWN.CloudVPN · NATWi-FiSwitchingIP phones
04

Hands-on IT support

Every kind of support, from formatting and reinstalling Windows to rebuilding PCs and swapping hardware — plus accounts, email, printers and whatever else breaks.

Format & reinstallPC rebuildsHardwareWindowsOffice / Outlook

ERP 19

1319

ERP 19 — moving a live group ERP from Odoo 13 to Odoo 19

The company group ran five years of operations on a heavily customized Odoo 13. I audited every module, mapped the dependency chain, ported the custom modules to Odoo 19 Community and stood up a hardened production server — then connected it to the public website.

0Module manifests audited
0kLines in the dependency chain
0Custom GKK modules
0+Commits of history carried over
01

Audit

Mapped 375 manifests, found the 46 third-party modules actually in use and flagged Enterprise-only code and removed APIs.

02

Port

Rewrote views, models and legacy JS widgets for Odoo 19 — HR, timetable, salary, stock, transport, accounting and maintenance.

03

Harden & deploy

Ubuntu 24.04 server with nginx reverse proxy, UFW firewall, Let's Encrypt TLS and a scripted hardening playbook.

04

Integrate

Custom branded login and home screen, plus a jobs API that publishes vacancies to gkllc.mn and receives CV uploads.

Custom modules ported

gkk_hr gkk_timetable gkk_salary gkk_account gkk_stock gkk_trans gkk_maintenance gkk_technic gkk_purchase_and_request gkk_document gkk_camp_register gkk_jobs_api gkk_website gkk_ui mw_spare_parts
Odoo 19PythonPostgreSQLOWLUbuntu 24.04nginxGit / GitLab

Websites

Sites I've designed, built and shipped.

Product sites, company sites, small-business booking systems and internal tools — each one wired to something real.

itcore.dev

SaaS product

IT Core

Marketing site with live pricing in three currencies, plan request form, automatic invoices, website chat and SEO.

ReactCloudflarePostgreSQL
gkllc.mn

Corporate website

Govikhangai Khudulmur

Company site whose job listings come straight from the ERP; applicants upload CVs that land in Odoo HR.

ReactViteOdoo API
paulshome-pi.vercel.app

Small business

Paul's Home Repair

Bilingual service site with a booking calendar, chat assistant and an admin dashboard for schedule and availability.

Next.jsUpstash RedisVercel
Internal / private

Website + mobile app

JK Mechanic Shop — Garage 84

Independent 4x4 and truck workshop in Gachuurt: services, parts import and storage — with a companion Expo mobile app.

ReactExpoReact Native
Internal / private

Internal tool

Travel Safety Form

Signed travel-safety form for staff that emails itself to IT and admin through company SMTP, signature embedded.

ReactServerlessSMTP
Internal / private

ERP front page

ERP 19 Portal

Branded GKK / TKMI front page and login screen for the Odoo 19 ERP, replacing the stock Odoo look.

Odoo 19QWebSCSS

Experience

Production responsibility, not tutorial experience.

2026 — Now

Govikhangai Khudulmur LLC

System Engineer · ERP · DevOps

  • Own IT for ~11 related companies: Dell PowerEdge R740 / R750 servers, networks, Check Point firewall, Grandstream GWN.Cloud Wi-Fi, VPN, VMware, NVR cameras and IP telephony.
  • Replace and reinstall server SSDs and HDDs, format and rebuild PCs, and handle day-to-day support for every user.
  • Led the ERP 19 migration from Odoo 13 to Odoo 19 and deployed the hardened production server.
  • Built gkllc.mn with live ERP job listings and internal tools that remove manual paperwork.
2025 — 2026

KFC / Tavan Bogd Foods LLC

IT Specialist · Infrastructure · KIOSK · POS

  • Kept POS, kiosks and back-office systems running across a multi-site restaurant network.
  • Resolved hardware, software and connectivity issues under live-service time pressure.
2022 — 2025

Bayan-Airag Exploration LLC

IT Support

  • Supported users, endpoints and network in a remote mining operation.
  • Built the hands-on troubleshooting foundation everything else grew from.

Infrastructure

Dell PowerEdge R740 / R750NVR / CCTVWindows ServerUbuntu / LinuxVMware ESXiCheck PointGrandstream GWN.CloudVPN · NAT · RoutingTCP/IP · DNS · DHCPnginxUFW · TLS

ERP & Backend

Odoo 13 → 19PythonPostgreSQLREST APIsNode.jsPrismaGit / GitLab

Frontend & Cloud

ReactNext.jsTypeScriptViteElectronExpoCloudflare WorkersVercel

Education

Computer Science — Mongolian International University

University studies — 4 years

Contact

Let's build something reliable.

Open to system engineering, DevOps, ERP integration and full-stack roles — or a company that needs IT Core.