Park Tech Systems

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
Applications · Infrastructure · Data
From mainframes to the cloud. Decades of engineering. Independent practice  ·  Direct to the engineer

01 Experience

Deep foundations.
Modern systems.

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

Systems & mainframe
Fortran · COBOL · Assembler · Basic · C · C++
Enterprise
Java · Oracle · SQL · .NET · Linux
Modern back-end
Python · Go · Rust · Kotlin · Node.js · Ruby · PHP
Tooling & platform
Docker · Kubernetes · PostgreSQL · Kafka

02 What 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.

03 Applications

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

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

    Google Play App Store
  • Wukong in the Forest of Words in Monkey King Mandarin

    Monkey King Mandarin

    Language learning & adventure

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

    Google Play App Store
  • Munch Metrics calorie tracking preview from its public store listing

    Munch Metrics

    Calorie & macro tracking

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

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

    wherio

    Live friend compass

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

    Google Play
  • Patchwise seasonal vegetable garden jobs and planting preview

    Patchwise

    Vegetable garden planning

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

    Google Play
  • Linewell's one-line journal entry screen

    Linewell

    One line a day diary

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

    Google Play App Store

Store availability checked 13 September 2026. Availability may vary by country and device.

04 The person behind the systems

Your engineer.
From the first conversation.

Park FolvigIndependent engineer · parkdeve

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.