Park Tech Systems
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Independent engineering Perth, WA

Systems built properly.

I'm Park Folvig. I design applications and consult on SaaS, cloud and network architecture, and data management and warehousing — for organisations that need systems built properly and kept running.

Get in touch Explore the apps
Systems, connected.
  1. ApplicationsNode.js · APIs · SaaS
  2. Cloud & networkingDocker · Kubernetes
  3. Data & eventsPostgreSQL · Kafka · Pipelines · Warehousing
Conceptual architecture · Designed end to end
From mainframes to the cloud. Decades of engineering. Independent practice  ·  Direct to the engineer

01Experience

Deep foundations.
Modern systems.

Decades of engineering, from mainframes to the cloud. The languages change; understanding how systems fit together still matters.

Systems & mainframe
Enterprise
Modern back-end
Tooling & platform
systems.c C · first appeared 1972 
#include <stdio.h>

int main(void) {
    puts("Systems built properly.");
    return 0;
}

$ cc systems.c -o systems && ./systems

Systems built properly.

One line, every era. Pick a language to see it written and run.

02What I do

From the architecture
to the running system.

Application delivery, infrastructure and data — with one engineer across the details.

  1. Application design & delivery

    Systems designed end to end, from data model to deployment.

  2. Consulting

    Architecture review and a second opinion from someone with no platform to sell you.

  3. SaaS packages

    Multi-tenant products: the build, and the operational side that keeps them running.

  4. Cloud & network architecture

    Cloud and on-premise topology, migration paths, and networking that holds up under load.

  5. Data management & warehousing

    Modelling, pipelines, and warehouses built so the reporting can be trusted.

Reference architectureAll layers
A conceptual system architecture iOS, Android and web clients connect through an edge network and API gateway to services in a Kubernetes cluster inside a private network, with a VPN link on-premise. Services write to PostgreSQL and publish events to Kafka, which feeds a pipeline into a data warehouse for reporting. VPC · private network Kubernetes cluster VPN pipeline reporting deploy iOS app Android app Web Edge · TLS · CDN API gateway CI / CD On-prem auth api workers metrics PostgreSQL Kafka Warehouse Reports
Conceptual · Hover or scroll the services to trace what each one covers.

03Applications

Built. Shipped.
Ready to use.

Independent applications for everyday life. Explore the products, or download them directly from their live store listings.

  • Vialume's shot and weight logging home screen, from its public store listing

    Vialume

    GLP-1 & weight tracking

    Android & iOS

    Log shots, weight and side effects. Private on your phone, with no Vialume account or cloud sync.

    Download on the App Store Get it on Google Play
  • Wukong in the Forest of Words in Monkey King Mandarin

    Monkey King Mandarin

    Language learning & adventure

    Android & iOS

    Travel with Wukong through new lands and learn Mandarin through battle.

    Download on the App Store Get it on Google Play
  • Munch Metrics calorie tracking preview from its public store listing

    Munch Metrics

    Calorie & macro tracking

    Android

    Photo calorie counter, macro tracker and barcode scanner that shows the range.

    Get it on Google Play
  • wherio live friend compass preview from its public store listing

    wherio

    Live friend compass

    Android & iOS

    Find friends with a live compass and short-lived, encrypted location sharing.

    Download on the App Store Get it on Google Play
  • Patchwise seasonal vegetable garden jobs and planting preview

    Patchwise

    Vegetable garden planning

    Android & iOS

    Vegetable garden planner and planting calendar — what to sow, plant and pick.

    Download on the App Store Get it on Google Play
  • Linewell's one-line journal entry screen

    Linewell

    One line a day diary

    Android & iOS

    One sentence a day. A private offline diary — no account, no cloud, no ads.

    Download on the App Store Get it on Google Play

  • Receipt Warden

    Receipt keeper & warranty tracker

    Android

    Keep purchase photos, warranty dates and claim notes together on your phone. On-device scanning gives you a starting point to review; individual receipt and claim PDFs are free.

    Get it on Google Play

  • Also from the workshop

    Looking for something to play? Arcade Picnic brings together our browser games, and PinPonder offers geography guessing with Street View clues. Lithico's rock and mineral identification website is also public, with its mobile app still coming soon.

Seven apps on Android; Vialume, Monkey King Mandarin, Linewell, wherio and Patchwise also on iOS. Public Australian store listings checked 25 October 2026. Availability may vary by country and device.

Choose a tool for the job, then keep a copy

Start with the record you want to keep: a short daily memory, a planting history, a meal estimate or proof of a purchase. Explore each product's website above to check its workflow, platforms and current features before downloading.

For a small writing habit, the one-line-a-day journaling guide has example sentences and prompts. For GLP-1 record keeping, Vialume's tracker checklist explains which logging and privacy details to check; it does not choose medication or doses.

Before changing or resetting a phone, check your app's export and restore options. A PDF is a readable copy; an app's restorable backup may be a different format. Store your chosen copy somewhere you can access independently of the old device, and check it opens.

04The person behind the systems

Your engineer.
From the first conversation.

Park Tech Systems is my independent practice, based in Perth, Western Australia.

You deal directly with the engineer who does the work — no account managers, and no handover to a delivery team you have never met.

I take on a small number of engagements at a time.

Park FolvigIndependent engineer · parkdeve