Ivan Rossouw

Senior Software Engineer sharing practical .NET lessons from real SaaS systems: architecture, debugging, testing, delivery, and production reliability.

Cape Town, South Africa Joined on Jul 18, 2026 https://www.linkedin.com/in/ivan-rossouw-94591627/

Education

Business Administration and Management — Upington College

Work

Senior Software Engineer at Connect One Technologies

Ivan Rossouw

Aug 31

Your PowerShell Script Has a .NET Runtime Too

#shell #devops #dotnet #testing

3 min read

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Ivan Rossouw

Aug 30

Email Is Not a Web Page

#dotnet #csharp #testing #aspnetcore

4 min read

Ivan Rossouw

Aug 29

Catch by Recovery Policy, Not Convenience

#dotnet #csharp #sre #testing

4 min read

Ivan Rossouw

Aug 28

Gate New Actions, Keep Recovery Open

#dotnet #blazor #csharp #architecture

4 min read

Ivan Rossouw

Aug 28

Gate New Actions, Keep Recovery Open

#dotnet #blazor #csharp #architecture

4 min read

Ivan Rossouw

Aug 27

Counts Match. The Data Can Still Be Wrong

#dotnet #csharp #efcore #testing

3 min read

Ivan Rossouw

Aug 26

A Secret Store Is Not a Boundary Until It Is the Only One

#dotnet #security #aspnetcore #oauth

4 min read

Ivan Rossouw

Aug 25

Idempotence Must Survive the Clock

#testing #devops #sre #automation

3 min read

Ivan Rossouw

Aug 24

When Helper Text Becomes the Field Name: A Blazor Accessibility Lesson

#dotnet #csharp #blazor #a11y

3 min read

Ivan Rossouw

Aug 23

Completion Is an Ownership Boundary

#architecture #csharp #concurrency

4 min read

Ivan Rossouw

Aug 22

A Valid Lookup Can Still Be Historically Wrong

#dotnet #efcore #csharp #architecture

4 min read

Ivan Rossouw

Aug 21

A Reason Code Without a Source Is Half a Diagnostic

#csharp #dotnet #debugging #observability

4 min read

Ivan Rossouw

Aug 20

Balanced Totals Can Still Hide Wrong Routing

#dotnet #csharp #architecture #testing

4 min read

Ivan Rossouw

Aug 17

MFA Enabled Is Not MFA Verified

#dotnet #csharp #security #aspnetcore

4 min read

Ivan Rossouw

Aug 16

When a Blazor Component Quietly Becomes HTML

#blazor #dotnet #testing #webdev

4 min read

Ivan Rossouw

Aug 15

Treat Runbook Status as Cached Data

#devops #documentation #sre #leadership

4 min read

Ivan Rossouw

Aug 14

A Deep Link Is an App-Lifecycle Event

#dotnet #dotnetmaui #android #mobile

4 min read

Ivan Rossouw

Aug 13

Your Reader Cannot Be Stricter Than Your Schema

#dotnet #efcore #database #csharp

4 min read

Ivan Rossouw

Aug 12

Clone Depth Is a Queue-Drift Budget

#git #devops #cicd #reliability

4 min read

Ivan Rossouw

Aug 11

Graceful Degradation Must Fail Closed

#dotnet #aspnetcore #security #testing

3 min read

Ivan Rossouw

Aug 9

Never Let Migration Tooling Guess the Database

#dotnet #efcore #architecture #devops

4 min read

Ivan Rossouw

Aug 8

Make Invalid Identifier Formats Unrepresentable

#testing #dotnet #csharp #architecture

4 min read

Ivan Rossouw

Aug 7

Test the Wire, Not the Serializer

#dotnet #csharp #testing #architecture

3 min read

Ivan Rossouw

Aug 6

Reconcile Before You Expire: Authority Checks at Irreversible Boundaries

#dotnet #csharp #architecture #sre

4 min read

Ivan Rossouw

Aug 5

A URL Is Only Safe for the Sink That Consumes It

#dotnet #csharp #security #blazor

4 min read

Ivan Rossouw

Aug 4

Your Blazor Test Is Racing the Renderer

#dotnet #blazor #testing #csharp

4 min read

Ivan Rossouw

Aug 3

A Green Scheduler Is Not Proof

#dotnet #csharp #observability #sre

4 min read

Ivan Rossouw

Aug 2

One New State Means a Projection Audit

#dotnet #csharp #architecture #testing

4 min read

Ivan Rossouw

Aug 1

The Date Was Visible. The Model Was Null.

#dotnet #blazor #csharp #testing

4 min read

Ivan Rossouw

Jul 31

A Hidden Button Is Not an Authorisation Boundary

#dotnet #aspnetcore #security #architecture

4 min read

Ivan Rossouw

Jul 30

Shared UI Means Shared Contracts, Not Shared Hosts

#dotnet #blazor #mobile #architecture

4 min read

Ivan Rossouw

Jul 29

A Green Architecture Test Can Still Miss the Bug

#dotnet #csharp #testing #architecture

4 min read

Ivan Rossouw

Jul 28

The Check Is Not the Idempotency Guarantee

#dotnet #efcore #testing #architecture

4 min read

Ivan Rossouw

Jul 27

Verified Is Not Active: Designing Safer Credential Rotation

#dotnet #security #architecture #programming

4 min read

Ivan Rossouw

Jul 26

Navigation Is a Commit Marker: Handling Partial Success in Blazor

#dotnet #blazor #testing #architecture

4 min read

Ivan Rossouw

Jul 25

Design Around the Point You Cannot Undo

#dotnet #architecture #sre #testing

4 min read

Ivan Rossouw

Jul 24

Configuration Is Not Authority: A Better Boundary for Runtime Policy

#dotnet #csharp #architecture #security

4 min read

Ivan Rossouw

Jul 23

Nullable Is a Rollout Strategy, Not a Domain Model

#dotnet #efcore #database #architecture

3 min read

Ivan Rossouw

Jul 22

When a Hybrid App Button Does Nothing

#dotnet #blazor #mobile #ios

4 min read

Ivan Rossouw

Jul 21

A CI Retry Should Be an Experiment, Not a Reflex

#dotnet #csharp #devops #testing

4 min read

Ivan Rossouw

Jul 20

Your Profile Form Shouldn't Change Your Login

#security #dotnet #architecture #csharp

4 min read

Ivan Rossouw

Jul 19

Realtime Is a Hint, Not Your Source of Truth

#dotnet #blazor #architecture #distributedsystems

4 min read

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