CrisisCore-Systems

Founder of CrisisCore Systems. Building Protective Computing: local-first, privacy-first software for users under pressure. Creator of PainTracker.ca and ProofVault.

Kelowna, BC Joined on Nov 27, 2025 crisiscore.systems@proton.me https://crisiscore-systems.ca

Education

Self-taught engineer shaped by production failures, open source, and real-world instability.

Pronouns

he/him

Work

Founder & protective computing engineer at CrisisCore-Systems

Pinned

CrisisCore-Systems

Dec 14 '25

Start Here: PainTracker and the CrisisCore Build Log

#privacy #security #pwa #architecture

3 min read

CrisisCore-Systems

Jun 23

Offline-First Is Not a Feature. It Is a Failure Policy.

#architecture #mentalhealth #privacy #ux

4 min read

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CrisisCore-Systems

Jun 22

Why Accountless Core Use Matters in Sensitive Apps

#discuss #mentalhealth #privacy #ux

3 min read

CrisisCore-Systems

Jun 21

The Export Button Is a Consent Boundary

#data #design #privacy #ux

3 min read

CrisisCore-Systems

Jun 20

A Small Checklist for Apps That Handle Vulnerable User Data

#architecture #data #privacy #security

3 min read

CrisisCore-Systems

Jun 19

Building Health-Adjacent Software Without Overclaiming

#discuss #privacy #sideprojects #softwaredevelopment

3 min read

CrisisCore-Systems

Jun 18

Patient-Generated Reports Without Provider Integration

#architecture #opensource #privacy #product

3 min read

CrisisCore-Systems

Jun 17

What I Learned Building a Free Tool Before Anyone Asked for It

#showdev #learning #privacy #sideprojects

3 min read

CrisisCore-Systems

Jun 4

The Friction Prerequisite: Why We Intentionally Slowed Down the UI

#design #softwareengineering #ui #ux

6 min read

CrisisCore-Systems

Jun 2

Offline Queue Replay and Idempotency in Offline-First PWAs

#architecture #frontend #javascript #webdev

6 min read

CrisisCore-Systems

May 26

Trust Boundaries in Client-Side Health Apps

#architecture #mobile #privacy #security

7 min read

CrisisCore-Systems

May 19

Testing IndexedDB Schema Migrations in Offline-First PWAs

#database #javascript #testing #webdev

6 min read

CrisisCore-Systems

May 15

Subpoena-Proofing by Design: Why Real Zero-Knowledge Has No Back Door

#infosec #privacy #security #systemdesign

7 min read

CrisisCore-Systems

May 12

Rollback Patterns in Offline-First PWAs

#architecture #distributedsystems #javascript #webdev

7 min read

CrisisCore-Systems

May 9

Privacy-first, offline-capable, trauma-informed, open-source health tools should be the default

#mentalhealth #opensource #privacy #ux

22 min read

CrisisCore-Systems

May 8

The Protective Legitimacy Score: How to Tell Whether a Trust Claim Is Structural

#architecture #privacy #softwareengineering #systemdesign

5 min read

CrisisCore-Systems

May 5

Service Worker Failure Modes in Offline-First PWAs

#architecture #javascript #softwareengineering #webdev

8 min read

CrisisCore-Systems

Apr 28

Coercion-Resistant UX: Designing Interfaces That Don't Pressure Users Under Stress

#design #mentalhealth #ui #ux

7 min read

CrisisCore-Systems

Apr 21

Sync Conflict Handling in Offline-First PWAs: How to Merge Without Lying to the User

#architecture #distributedsystems #ux #webdev

7 min read

CrisisCore-Systems

Apr 17

OpenClaw and the Boundary Problem

#ai #devchallenge #opensource #privacy

4 min read

CrisisCore-Systems

Apr 7

The Stability Assumption: The Hidden Defect Source

#architecture #design #softwareengineering #ux

6 min read

CrisisCore-Systems

Apr 4

I Ran the Protective Legitimacy Score on MyFitnessPal. It Failed.

#privacy #security #webdev #ethics

5 min read

CrisisCore-Systems

Mar 25

Why Sovereignty Is Not Enough: The Missing Operational Layer in AI Stewardship

#ai #architecture #privacy #softwareengineering

6 min read

CrisisCore-Systems

Mar 24

Protective Computing Is Not Privacy Theater

#discuss #architecture #privacy #systemdesign

8 min read

WeCoded 2026: Echoes of Experience 💜

CrisisCore-Systems

Mar 15

Who Was the Software Built to Survive?

#devchallenge #wecoded #dei #career

6 min read

CrisisCore-Systems

Mar 14

ProofVault as a Release Artifact: Turning Trust Into Something You Can Verify

#showdev #architecture #security #privacy

8 min read

CrisisCore-Systems

Mar 8

The Micro-Coercion of Speed: Why Friction Is an Engineering Prerequisite

#ai #softwareengineering #architecture #devops

5 min read

CrisisCore-Systems

Mar 6

Architecting for Vulnerability: Introducing Protective Computing Core v1.0

#architecture #privacy #offlinefirst #engineering

7 min read

CrisisCore-Systems

Mar 5

Preview Mode First: Agent Plans as PRs (Plan Diff + Invariants)

#ai #security #devops #privacy

4 min read

CrisisCore-Systems

Mar 3

How Pain Tracker Pro Streamlines WorkSafeBC Claims: A Composite Case Study

#privacy #security #documentation

2 min read

CrisisCore-Systems

Feb 26

Maintaining truthful docs over time: how to keep security claims honest

#documentation #security #softwareengineering #writing

5 min read

CrisisCore-Systems

Feb 26

Field Guide v0.1 What is inside and where to start

#architecture #security #documentation

2 min read

CrisisCore-Systems

Feb 24

Quality gates that earn trust: checks you can run, not promises you can’t

#cicd #codequality #softwaredevelopment #testing

5 min read

CrisisCore-Systems

Feb 24

Protective Computing Core v1.0 Design Scope and Practical Use

#architecture #security #privacy #protectivecomputing

4 min read

CrisisCore-Systems

Feb 19

Analytics without surveillance: explicit consent, layered gates, and never sending Class A data

#privacy #analytics #security #consent

5 min read

CrisisCore-Systems

Feb 19

Protective Computing Canon v1.0 is now DOI-backed

#privacy #a11y #security #opensource

4 min read

CrisisCore-Systems

Feb 17

WorkSafeBC-oriented workflows without overclaims: structured summaries, careful language

#documentation #privacy #security #worksafebc

5 min read

CrisisCore-Systems

Feb 13

Pain Tracker whitepaper v1.3.0 (PDF)

#privacy #architecture #security #whitepaper

1 min read

CrisisCore-Systems

Feb 13

Privacy-First Pain Tracking as a New Digital Health Standard

#healthtech #privacy #opensource #pwa

11 min read

CrisisCore-Systems

Feb 12

Exports are a security boundary: the moment local-first becomes shareable

#security #privacy #architecture #exports

5 min read

CrisisCore-Systems

Feb 10

Trauma-informed UX + accessibility as architecture (not polish)

#a11y #architecture #mentalhealth #ux

4 min read

CrisisCore-Systems

Feb 5

Zod + defensive parsing in a local-first app: make your offline data trustworthy

#architecture #codequality #typescript #webdev

5 min read

CrisisCore-Systems

Feb 3

Service workers that don’t surprise you: deterministic caching for offline-first PWAs

#pwa #architecture #javascript #caching

6 min read

CrisisCore-Systems

Jan 29

Three storage layers in an offline-first health PWA: state cache vs IndexedDB vs encrypted vault

#architecture #privacy #database #offlinefirst

9 min read

CrisisCore-Systems

Jan 27

Offline-first without a backend: building a local-first PWA you can actually trust

#architecture #javascript #tutorial #webdev

7 min read

CrisisCore-Systems

Jan 15

Internationalizing Trauma-Informed UX: Testing Across Cultures

#testing #a11y #healthcare #react

11 min read

CrisisCore-Systems

Jan 13

Cross-Crisis Calibration: Panic, Dissociation, Sensory Overload

#testing #a11y #healthcare #react

14 min read

CrisisCore-Systems

Jan 8

Testing Recovery: Proving Your App Helps People Stabilize

#testing #a11y #healthcare #react

11 min read

CrisisCore-Systems

Jan 7

Test Your Tests: Does Your Crisis Simulation Match Reality?

#testing #a11y #healthcare #react

11 min read

CrisisCore-Systems

Dec 30 '25

When Crises Stack: Testing Co-Occurrence Without Cascading Failures

#testing #a11y #healthcare #react

10 min read

CrisisCore-Systems

Dec 25 '25

Launched: Pain Tracker v1.0.0 (Open Source, Local-First, Trauma-Informed)

#showdev #opensource #react #privacy

3 min read

CrisisCore-Systems

Dec 23 '25

Testing Across the Stack: UI Storage Encryption Offline Resilience

#testing #a11y #healthcare #react

11 min read

CrisisCore-Systems

Dec 18 '25

Performance Under Pressure: Crisis Detection Without UI Lag

#testing #a11y #healthcare #react

11 min read

CrisisCore-Systems

Dec 16 '25

Privacy-Preserving Analytics: Proving You Can Measure Without Identity

#testing #a11y #healthcare #react

12 min read

CrisisCore-Systems

Dec 13 '25

Visual Regression for Adaptive Interfaces: Testing That Crisis Mode Actually Looks Different

#testing #a11y #healthcare #react

10 min read

CrisisCore-Systems

Dec 12 '25

The Ethics of Simulation: How to Test Trauma-Informed Features Without Exploiting Real Pain

#testing #a11y #healthcare #react

10 min read

CrisisCore-Systems

Dec 10 '25

How to Test “User Is in Crisis” Without Treating Humans Like Mock Objects

#testing #a11y #react

5 min read

CrisisCore-Systems

Dec 9 '25

The False Positive Problem: Calibrating Crisis Detection Without Becoming The Boy Who Cried Wolf

#testing #a11y #healthcare #react

7 min read

CrisisCore-Systems

Dec 8 '25

Two People, Same Body: A Developer's Crisis Architecture

#mentalhealth #opensource #webdev #react

4 min read

CrisisCore-Systems

Dec 8 '25

Keeping Your Health Data Out of Court

#encryption #security #typescript #privacy

5 min read

CrisisCore-Systems

Dec 7 '25

If Your Health App Can't Explain Its Encryption, It Doesn't Have Any

#security #privacy #healthtech #webdev

7 min read

2026 WeCoded Completion

4 Week Community Wellness Streak

2 Week Community Wellness Streak

1 Week Community Wellness Streak

Writing Debut

CrisisCore Systems

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