CK-2026 profile datasheetRev. 10.2026, Utrecht NL

CK-2026

Caybo Kotzé

Platforms & Solution Architect Consultant

Freelance consultant who designs and delivers platforms for customs, logistics, supply chain and public infrastructure, for clients across Europe, South Africa and the United States.

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Pin	Signal	Value
1	TEL	+31 (0) 61 944 9261
2	MAIL	caybo@mergedigital.io
3	LOC	Utrecht, Netherlands
4	GIT	github.com/caybokotze
5	NOW	UPS, Eindhoven and miridia.io
6	LANG	English, Afrikaans, Dutch
7	CERT	AZ-204, AI-102, AZ-400
8	MODE	Freelance consulting

Features

Solution architect on UPS's customs and clearance platform, live in 30+ countries with 600+ people on the program
Solution architect consultant and supply chain optimization expert at Miridia, a supply chain and automation platform
Shared ownership of 8 teams and 80+ engineers, with direct guidance of 2 teams
Led the .NET rebuild of ProRail's Railinformatie Portaal on Azure
Full-stack across C#/.NET, Go and TypeScript, from core APIs to Blazor, Angular, Vue and React front-ends
Mobile apps in React Native and Flutter, used by millions of people in Southern Africa
AI systems that combine custom-trained models with LLMs for classification and document forensics

Applications

Customs & clearance
Supply chain optimization
Rail infrastructure
Logistics & delivery
Online food ordering
Insurance claims

Key specifications

Building software since	2016
Current engagements	UPS, Miridia
Program scale	600+ people, 30+ countries
Engagement model	Freelance, consulting

1Description

Caybo is a platforms and solution architect consultant with deep expertise in C# and TypeScript. He designs well-architected, testable and performant systems, and works in architectural leadership roles where he connects business requirements to technical implementation on large international programs.

He enjoys mentoring developers and guiding teams, and makes technical concepts relatable for key stakeholders so that good decisions get made at both team and organizational level. He is analytical and persistent, keeps current with modern standards and patterns, and pushes for the tools and practices that make teams more effective.

His focus is building the right solution for the problem, one that delivers real business value, with strong design, solid user experience and well-tested code. Through his own business he has run delivery teams, and he keeps a network of specialist freelancers to bring in when a project needs deeper expertise.

2Experience

Jul 2025 – presentEindhoven, NL
Solution Architect Consultant at UPS

Global customs and clearance application spanning 30+ countries.
- One of 12 solution architects on an international customs and clearance application with 600+ people on the program.
- Shares ownership of 8 teams (80+ engineers) and directly guides 2 of them.
- Clarifies business requirements for the Australian and Singapore customs implementations.
- Writes architectural guides that keep feature rollouts consistent across regions.
Solution architecture, requirements analysis, customs & clearance, multi-region rollout
Jan 2022 – Jun 2025Utrecht, NL
Lead .NET Software Engineer at Capgemini for ProRail

ProRail is owned by the Dutch government and maintains the national railway infrastructure.
- Rebuilt ProRail's rail document management system, the Railinformatie Portaal, with his team, modernizing and extending its existing functionality.
- Architected and built the core APIs and infrastructure pipelines on ASP.NET App Services and Azure Functions, with APIM as the API gateway inside a VNET.
- Delivered custom data pipelines, SAP integrations, OCR text extraction from PDFs, PDF diffing and data synchronization services.
- Worked across Cosmos DB, Blob Storage, APIM and Azure AI (Cognitive) Services in a microservice back-end.
- Built parts of the Blazor front-end, including custom JavaScript modules for interactive components and a state management solution based on the Redux pattern.
Blazor, ASP.NET, Azure Functions, APIM, Cosmos DB, Blob Storage, Azure AI, SAP, microservices
Mar 2020 – Dec 2021Durban, ZA
.NET Software Engineer at Yumbi

Online food ordering platform for large retailers in South Africa, including Burger King and Debonairs, competing with Uber Eats and Mr Delivery.
- Built front-end and back-end systems in a service-oriented architecture with .NET Framework, Vue.js and Angular, in a hybrid team working Kanban.
- Built native and cross-platform mobile apps (React Native, Vue.js, Angular) used by millions of customers across Southern Africa.
- Optimized and sharded the MySQL cluster on AWS; the VM cluster and CI/CD ran on Jenkins and Octopus Deploy.
- Built a web-based approval workflow so database administrators could sign off migration scripts before they ran on production.
.NET Framework, Vue.js, Angular, React Native, MySQL, AWS, Jenkins, Octopus Deploy
Jan 2016 – Feb 2020Durban, ZA
.NET Software Engineer at Merge Africa

Small South African agency focused on bespoke system development.
- Developed IoT projects, websites and bespoke systems, including a route plan optimization product for logistics operations.
- Wrote developer tooling in Go for database migrations and database multiplexing.
- Guided the migration from AWS to Azure.
- Built on Azure Functions, Azure Web Services, Azure DevOps and Cognitive Services, plus GCP's Route Matrix API and Pub/Sub.
- Ran CI/CD with TeamCity and Azure DevOps.
.NET, Go, Azure, AWS, GCP, TeamCity, IoT

3Selected projects

Miridia miridia.io

A supply chain and automation platform for eCommerce, retail and manufacturing. It connects orders, inventory, production and demand planning with AI-assisted workflows. Caybo works on Miridia as solution architect consultant and supply chain optimization expert. Before the rebrand the product was Cargo Pilot, where he was tech lead consultant for several years.

Supply chain optimization, demand planning, workflow automation, solution architecture

Railinformatie Portaal railinformatieportaal.nl

ProRail's portal for rail infrastructure documents. Caybo led the .NET rebuild for Capgemini: Blazor front-end, Azure microservices, SAP integration, OCR and PDF comparison.

Blazor, Azure, SAP, document management

Go Out go-out.nl

A web app for community events in the Netherlands, from short small-group hikes to an evening at the theater.

Web app, community events

HS code classifier AI

Combines custom-trained models with LLMs to classify products into HS codes with high accuracy for e-commerce and logistics.

Custom models, LLMs, customs

Claims fraud detection AI

Checks insurance claim documents against expected outputs and runs forensic checks for tampering, using custom fraud detection algorithms alongside LLM analysis.

Document forensics, insurance

Workflow and automation Orchestration

Workflow systems with human-in-the-loop approvals, background and data processing, IoT automations and Excel, Google Sheets and Airtable integrations. Built with Elsa Workflows, Workflow Core, Temporal (sagas), n8n, Windmill, Zapier and IFTTT.

Temporal, Elsa, n8n, Windmill

Driver tracking app Mobile

A Flutter application with native service bridges for logistics and delivery driver tracking.

Flutter, native bridges, logistics

4Technical specifications

Parameter	Typical stack
Architecture	Solution architecture, process optimization, ERP design and implementation, microservices, CQRS, saga orchestration
Supply chain	Supply chain optimization, route planning, customs and clearance, logistics integrations
Languages	C#, TypeScript / JavaScript, Go
Back-end	ASP.NET, .NET Aspire, Azure Functions, Dapper, Gin, Echo
Front-end	Blazor, Angular, Vue, React, Redux pattern
Mobile	React Native, Flutter
Azure	App Services, Functions, Cosmos DB, Blob Storage, APIM, Service Bus, AI Services
AWS and GCP	S3, SES, EC2, Maps, Route Matrix, Pub/Sub
Data and messaging	SQL Server, MySQL, PostgreSQL, Cosmos DB, Redis, RabbitMQ
Workflow	Elsa Workflows, Workflow Core, Temporal, n8n, Windmill, state machines
DevOps	Azure DevOps, Terraform, Jenkins, TeamCity, Octopus Deploy
AI	Azure AI, custom-trained models with LLMs, document forensics

5Open-source components github.com/caybokotze

Tangent caybokotze/tangent

A deterministic architecture validator for .NET. Teams define layers, allowed dependencies and design-pattern contracts in a small declarative language. Tangent checks the codebase as a Roslyn analyzer, a CLI and a CI gate, catches architectural drift early, and returns machine-readable feedback that AI coding agents use to correct their own output.

C#, Roslyn, architecture guardrails, AI-assisted development

SQL Migrator caybokotze/sql-migrator

Migration tracking and rollbacks for MySQL, MariaDB and PostgreSQL, written as a replacement for EF Core migrations. Supports schema-per-tenant, fan-out across tenant schemas and transactional dry runs.

Go, CLI

FileSpace caybokotze/filespace

File management on top of your own S3 or Azure Blob storage, with workspaces, tags, threaded comments, full-text search and expiring, password-protected share links.

Go, Vue 3, PostgreSQL

md2pdf caybokotze/markdown-to-pdf

A fast Markdown-to-PDF converter that uses Typst instead of Chromium or Node.js. Supports math, Mermaid diagrams, callouts, cover pages and a table of contents.

Rust, Typst

Generic SQL Builder ScopeFunction.GenericSqlBuilder

Generates SQL for SQL Server, MySQL, Cosmos DB and PostgreSQL. Pairs with ADO.NET or Dapper for simpler queries and better performance than Entity Framework.

.NET, NuGet

Dapper.CQRS caybokotze/Dapper.CQRS

A Dapper wrapper with native support for the CQRS pattern, so commands and queries scale out cleanly while keeping Dapper's speed.

.NET

NTK8 caybokotze/ntk8

A customizable, stateless or stateful JWT library for authentication and authorization in APIs built with Dapper and CQRS.