GitHub / Public
nl-zuiver
Nederlandser schrijven, zonder taalpolitie: a Markdown-first Dutch writing guide and AI skill for deliberate word choice.
Work / build / learn
Things I’ve made move.
The complete connected record: work, education, professional projects, credentials, products, repositories, systems, and ideas from 2006 to now. Newest first.
Complete timeline
2006—now · connected public record
174 milestones shown
GitHub / Public
callersignal
Evidence-backed international phone-number intelligence for agents, CLIs, MCP clients, and the web.
GitHub / Public
obsidian-attachment-link-rules
Choose link or embed syntax for dropped attachments by file extension while preserving native Obsidian storage behavior.
GitHub / Public
arr-orchestrator
Agent-first, Telegram-operated foundation for safe diagnosis, planning, and verification across self-hosted media automation stacks.
GitHub / Public
toolbox-auth-v2-starter
Private-by-default Vercel starter with scrypt, signed sessions, centralized rate limiting, and executable auth proofs.
Private deployment / Family operations
Family Bertus brings practical automation into an existing family conversation.
A WhatsApp-first assistant routes natural messages into shared plans, groceries, reminders, and actions while keeping confirmations visible and consequential decisions human.
App / Daily planning
Dayline makes a full day easy to plan without turning it into a timesheet.
A browser-local planner with calm half-hour blocks, a precise ten-minute grid, six life categories, and resizable activities.
App / SAP data quality
SAP Data Readiness turns table extracts into process-readiness findings.
A Fiori-inspired, browser-local checker that loads SAP-shaped CSV and XLSX tables, tests material master data against purchase-readiness rules, and explains what will break before the process does.
Personal system / Food
OMAD V04 turns one hot meal into a measured operating system.
A frozen dump-tray recipe is versioned from fallback food to a fixed four-stack system, then costed and modelled across macros, micronutrients, chicken days, and a weekly salmon swap.
GitHub / Public
etm-next-agent-context
Source-backed ETM.next product context for people and AI agents
01 / Portfolio
viggomeesters.com becomes an evidence-first portfolio.
The site is reorganised around working software, public source, explicit proof, and a clearer professional through-line: data migration plus agent systems.
02 / Method
Evidence-Based Work
A practical argument for treating screenshots, tests, readbacks, and source links as part of delivery—not as decoration after the fact.
Guide / Method
Hermes via Telegram and WSL
A practical setup guide for running Hermes through Telegram and WSL.
GitHub / Public
nederlandse-huizenkoop-agent-context
Nederlands Markdown-first contextpakket voor koper-side AI-agenten bij huizen kopen: bezichtigen, bieden, voorwaarden, kosten en hypotheek.
03 / Agent context
A source-backed context pack for buying a home in the Netherlands.
The Nederlandse Huizenkoop Agent Context turns a fragmented process into versioned, reviewable guidance with explicit source and freshness metadata.
GitHub / Public
go-workflow-stack
Reusable CLI and schemas for repo-local .go agent workflow state.
GitHub / Public
go-project-template
Minimal .go template repository for repo-local agent workflows.
GitHub / Public
viggomeesters.github.io
Public schemas and agent-facing contracts for personally maintained tooling.
GitHub / Public
minimal-ai-vault-starter
Public-safe starter for a minimal AI-enabled Obsidian/JSONL vault
Knowledge / Read model
VaultLayer
A local-first read layer for Markdown search, vectors, structured metadata, and provenance.
GitHub / Public
viggomeesters-assets
Public-safe visual style and prompt references for viggomeesters.com.
05 / Architecture
Database types for agent-first systems
A decision guide for choosing storage by access pattern, auditability, and operational constraints instead of defaulting to one fashionable database.
Guide / Method
JSONL for Agent-First Data Structures
Why append-friendly JSONL is a useful substrate for inspectable, agent-readable systems.
Guide / Method
FOCI: Fear of Choosing Incorrectly
A working model for recognising and reducing decision paralysis.
GitHub / Public
jsonl-vault-spike
Synthetic JSONL-first vault/context proof of concept for agent-readable personal knowledge systems
Guide / Method
Vault-First Operating Model
A local-first model for durable context, task state, and agent collaboration.
Guide / Method
Source-Backed Synthesis
A method for turning evidence into useful synthesis without losing provenance.
Guide / Method
Proof-First Delivery
A delivery approach where verification evidence is part of the work itself.
Guide / Method
The Agent Workflow Loop
A bounded loop for planning, executing, checking, and finishing agent work.
Knowledge / Read model
Personal Knowledge System and VaultLayer become one inspectable stack.
The system map explains capture, structure, validation, retrieval, and agent interfaces; VaultLayer adds a local-first read model over Markdown.
Procedural memory / Reviewed public set
Reviewed Skills
Public summaries of reusable capabilities, with purpose, provenance, maintenance state, and boundaries visible.
GitHub / Public
vault-layer
Local-first database and retrieval layer for huge Markdown/Obsidian vaults
GitHub / Public
reisplanner-agent
Local-first agent-ready travel planning toolkit with optional Vercel publishing
GitHub / Archived
sap-field-atlas
Archived legacy seed; canonical successor: viggomeesters/sap-agent-context
GitHub / Public
sap-agent-context
Source-backed SAP context bundles for AI agents, functional design, field mapping, and SAP delivery workflows.
GitHub / Public
mega-vault-viewer
Local-first macOS viewer for large mixed-format Markdown knowledge vaults.
08 / Knowledge tooling
Mega Vault Viewer
A read-only browser for large markdown vaults, designed to make structure and content navigable without turning the viewer into another editor.
07 / SAP delivery
SAP knowledge becomes typed, sourced agent context.
SAP Agent Context packages functional design, field mapping, migration, workflow, integrations, and analytics guidance without customer content.
App / Compensation
Normalized Salary Calculator
A focused browser calculator for comparing compensation packages on consistent yearly, monthly, and hourly terms.
GitHub / Public
obsidian-releases
Community plugins list, theme list, and releases of Obsidian.
GitHub / Public
obsidian-folder-sort-view
Public-API Obsidian folder view sorted Z-to-A
GitHub / Public
obsidian-test-vault
Public repository retained as part of the complete build history.
GitHub / Public
obsidian-newest-files
Public repository retained as part of the complete build history.
GitHub / Public
obsidian-folder-sort-z-to-a
Spike plugin for Z-to-A folder ordering in Obsidian's native File Explorer
GitHub / Public
obsidian-diff-patch-viewer
Read-only .diff and .patch viewer for Obsidian
GitHub / Public
obsidian-slide-deck-viewer
Read-only PPTX slide inspection view for Obsidian.
GitHub / Public
obsidian-vcf-contacts-viewer
Read-only VCF contact card viewer for Obsidian.
GitHub / Public
obsidian-script-viewer
Read-only script source, outline, and safety-hint viewer for Obsidian.
GitHub / Public
obsidian-plist-viewer
Read-only Apple plist and mobileconfig viewer for Obsidian.
GitHub / Public
obsidian-minimal-hidden-files
Reveal safe dotfiles and dotfolders in Obsidian's native File Explorer.
GitHub / Public
obsidian-ics-calendar-viewer
Public repository retained as part of the complete build history.
GitHub / Public
obsidian-git-viewer
Lightweight read-only Git status viewer for Obsidian.
GitHub / Public
obsidian-eml-email-viewer
Read-only local .eml email viewer for Obsidian with safe previews and raw MIME fallback.
GitHub / Public
obsidian-archive-viewer
Inspect .zip archive contents as read-only metadata trees with search, size summaries, and safety warnings.
GitHub / Public
obsidian-alteryx-viewer
Read-only Obsidian viewer for Alteryx .yxmd workflows and .yxzp packages
09 / Obsidian
Complex files become inspectable inside the vault.
A family of read-only Obsidian viewers for Alteryx, XML, YAML, CSV, JSONL, EML, and other structured formats.
GitHub / Public
obsidian-xml-viewer
Read-only XML tree and source viewer for Obsidian.
GitHub / Public
obsidian-xlsx-viewer
Read-only XLSX workbook value viewer for Obsidian.
GitHub / Public
obsidian-txt-viewer
Read-only TXT viewer plugin with line numbers, search navigation, filtering, and large-file guards.
GitHub / Public
obsidian-toml-ini-viewer
Public repository retained as part of the complete build history.
GitHub / Public
obsidian-python-viewer
Read-only Python source and structure viewer for Obsidian.
GitHub / Public
obsidian-json-viewer
Read-only JSON and JSONL tree viewer for Obsidian
GitHub / Public
obsidian-html-page-viewer
Read-only sandboxed HTML page viewer for Obsidian.
GitHub / Public
obsidian-ango-companion
Public repository retained as part of the complete build history.
10 / Agent workflow
The workflow becomes routable, reusable, and multi-agent.
Hermes, Codex, and reusable skills connect a command bus to repo context, durable procedures, and proof-first completion gates.
McCoy / Creator & tooling developer
Alteryx Flow Agent Toolkit
An internal reusable toolkit for agent-assisted Alteryx flow development, combining generation, validation, templates, documentation, and agent procedures.
McCoy / Data Migration Consultant
Hitachi Construction Machinery Europe
S/4HANA data migration and load validation for HCME, delivered as an external McCoy engagement.
GitHub / Public
life-os-starter
Plug & play Obsidian vault with AI agent support. Clone, install, start.
Guide / Method
CLI Agents Guide
A practical guide to working with command-line agents and repository context.
McCoy / Tooling developer
SDP Dashboard
An internal browser-based dashboard that makes the Smart Data Platform methodology, steps, and supporting material easier to navigate.
Guide / Method
Knowledge Pyramid
A model for structuring raw information into increasingly useful knowledge.
Guide / Method
Helicopter to Detail
A method for moving deliberately between system overview and implementation detail.
GitHub / Public
viggomeesters.nl
Viggo Meesters’ static personal site: projects, systems, guides, and proof-first agent workflow notes.
GitHub / Public
vault-schema
Machine-readable vault schema contract, templates, and validation guard for structured Obsidian vaults
App / Visualizer
Money Shower
A real-time salary visualizer that makes the passing value of working time tangible.
App / Health
Dimma
A mobile-first migraine tracker designed to capture an event with as little friction as possible.
App / Planning
Visual PM
A visual project-management surface for making work, ownership, and progress easier to scan.
13 / Shared tools
Agent Scripts
Repeated agent operations move out of individual repositories and into a shared, inspectable toolkit.
GitHub / Archived
obsidian-raycast
Raycast extension with commands for the note taking app Obsidian.
GitHub / Archived
raycast-quick-event
Create a calendar event using natural language in Raycast
McCoy / Full-time
SAP Data Consultant
Full-time SAP data consultancy role in Eindhoven, delivered in a hybrid working model.
Credential / DataCamp
Introduction to Alteryx
Data and automation credential, preserved in the public learning record.
Credential / DataCamp
Data Transformation in Alteryx
Data and automation credential, preserved in the public learning record.
Credential / DataCamp
Data Preparation in Alteryx
Data and automation credential, preserved in the public learning record.
McCoy / Tooling developer
Alteryx Template Flows
Reusable Alteryx transformation-flow templates for SAP data migration delivery.
McCoy / Contributor & tooling developer
Smart Data Platform
Contribution to McCoy’s SAP data migration methodology and internal documentation hub, with an emphasis on making delivery knowledge usable in tools.
McCoy / Data Migration Consultant
Universiteit Utrecht
S/4HANA HR data migration delivered as an external McCoy engagement.
McCoy / Data Migration Consultant
Gemeente Groningen
Financial migration from DaFinci to S/4HANA, including subsidy objects, delivered as an external McCoy engagement.
15 / Data migration
Minimal ETL Modeler starts with one stubborn idea.
Data mapping and validation should be understandable to the people doing the migration. The project grows into a browser-local workbench for visual transforms, QA, and accepted/rejected exports.
App / Family planning
Kraamweek
A focused browser planner for coordinating the practical details of a newborn week.
Credential / DataCamp
Intermediate Python
Data and automation credential, preserved in the public learning record.
Aiden / Data Migration Consultant
Cramo Fleet
Migration from IBS to S/4HANA Private Cloud across materials, assets, and related fleet objects for Boels Cramo.
Aiden / Data Migration Consultant
LC Packaging NL
S/4HANA on-premise to S/4HANA Private Cloud migration for LC Packaging.
Aiden / Authorization Consultant
Mepal
Authorization consulting for an S/4HANA Public Cloud implementation.
Aiden / Data Migration Consultant
Cramo Baltics
Financial-object migration from IBS to S/4HANA Private Cloud for Boels Cramo in the Baltic region.
Credential / DataCamp
Introduction to Python
Data and automation credential, preserved in the public learning record.
Aiden / Data Migration Consultant
Cramo Sweden & Norway
Financial-object migration from IBS to S/4HANA Private Cloud for Boels Cramo in Sweden and Norway.
Credential / Workpath
OKR Basics
Professional practice credential, preserved in the public learning record.
Aiden / OKR Coach
OKR Coaching
Coaching and supporting the second implementation phase of Objectives and Key Results within Aiden.
Credential / Google Career Certificates
Foundations of Project Management
Professional practice credential, preserved in the public learning record.
Aiden / Data Migration Consultant
Boels Fleet NL
Migration from Infor InSpHire to S/4HANA Private Cloud across materials and assets for the Dutch Boels fleet.
Aiden / Data Migration Consultant
Cramo Finland
Financial-object migration from IBS to S/4HANA Private Cloud for Boels Cramo in Finland.
Credential / SAP
Sales 2023 - SAP S/4HANA Cloud - Public Edition - SAP Certified Application Associate
SAP credential, preserved in the public learning record.
Credential / SAP
SAP Analytics Cloud - SAP Certified Application Associate
SAP credential, preserved in the public learning record.
Aiden / iRPA Developer
RPA Invoicing for LiveKindly
Implementation of SAP Intelligent Robotic Process Automation for invoicing.
Aiden / Initiator & designer
Traineeship 2.0
Initiated and redesigned Aiden’s traineeship, evolving its first version into a more deliberate second programme.
Credential / SAP
New Employee Business Partner Model in SAP S/4HANA
SAP credential, preserved in the public learning record.
Credential / DataCamp
Intermediate SQL
Data and automation credential, preserved in the public learning record.
Credential / Aiden Academy
Focusing Skills
Professional practice credential, preserved in the public learning record.
Credential / Aiden Academy
Conflictoplossing
Professional practice credential, preserved in the public learning record.
Credential / Aiden Academy
Lean Management - Green Belt
Professional practice credential, preserved in the public learning record.
Credential / DataCamp
Introduction to Statistics
Data and automation credential, preserved in the public learning record.
Credential / DataCamp
Introduction to SQL
Data and automation credential, preserved in the public learning record.
Credential / SAP
Information Security Management in a Nutshell
SAP credential, preserved in the public learning record.
Credential / SAP
Guide Your SAP S/4HANA Project to Success
SAP credential, preserved in the public learning record.
Credential / Aiden Academy
Feedback geven en ontvangen
Professional practice credential, preserved in the public learning record.
Aiden / Full-time
SAP Data Migration Consultant
Full-time SAP data migration consultancy role based in Den Bosch, delivered in a hybrid working model.
Credential / DataCamp
Understanding Machine Learning
Data and automation credential, preserved in the public learning record.
Credential / DataCamp
Understanding Data Visualization
Data and automation credential, preserved in the public learning record.
Credential / DataCamp
Understanding Data Topics
Data and automation credential, preserved in the public learning record.
Credential / DataCamp
Understanding Cloud Computing
Data and automation credential, preserved in the public learning record.
Credential / Aiden Academy
Lean Management: Yellow Belt
Professional practice credential, preserved in the public learning record.
Credential / Aiden Academy
Lean Management - Orange Belt
Professional practice credential, preserved in the public learning record.
Credential / SAP
Building Tomorrow’s ERP with SAP S/4HANA
SAP credential, preserved in the public learning record.
Credential / DataCamp
Understanding Data Science
Data and automation credential, preserved in the public learning record.
Credential / DataCamp
Understanding Data Engineering
Data and automation credential, preserved in the public learning record.
Brandsom / Developer
Automated Content Generator
Developed an internal generator for automating product-content creation at Brandsom.
GGZ Ecademy / Internship
Graduate Intern, Learning Technology
Graduation internship in learning technology in Tilburg.
Credential / Wärtsilä Voyage
Innovation Award 2022
Foundations credential, preserved in the public learning record.
GGZ Ecademy / Developer
Learning Technology Vision
Developed a future vision and development roadmap for the GGZ Ecademy learning-management environment.
Avans / Project lead & Mendix developer
Warehouse Management System — part 2
Led the second development phase of a Mendix warehouse-management system, adding new operational features.
Avans / Designer
Veilig Op Reis tas
Designed a practical physical product—the VORtas—around an explicit value-creation brief.
Avans / Designer
Special Events for Withlocals
Designed a new “Special Events” event format for Withlocals.
Avans / Researcher
ZES Battery Container
Researched whether a Wärtsilä battery container could be used effectively at a construction site.
Brandsom / Part-time
Marketplace Specialist
Part-time marketplace role based in Utrecht and carried out remotely.
Credential / IBM
Python for Data Science, AI & Development
Data and automation credential, preserved in the public learning record.
Credential / IBM
Data Science Orientation
Data and automation credential, preserved in the public learning record.
Credential / IBM
Data Science Methodology
Data and automation credential, preserved in the public learning record.
Avans / Designer
Value Proposition Design for De Uitvindfabriek
Created a Value Proposition Design for a new service at De Uitvindfabriek.
Avans / Data analyst
Customer Satisfaction Analysis
Analysed which attributes most strongly influenced customer satisfaction for Algorithmic Perfumery.
Avans University of Applied Sciences
Minor Innovation Management
Minor focused on innovation management.
Brabant Water / Internship
Information Management Intern
Information-management internship in Den Bosch, delivered in a hybrid working model.
Brabant Water / Researcher & innovator
Serious Game for Agile Working
Researched and developed a serious-game approach for increasing awareness of agile development at Brabant Water.
Avans / Scrum master & Mendix developer
Warehouse Management System — part 1
Scrum-led and developed the first phase of a Mendix warehouse-management system.
Avans / Project lead & researcher
Culture Research at Oriëntal Green House
Researched organisational culture, structure, and processes at Oriëntal Green House.
Credential / Mendix
Rapid Developer
Foundations credential, preserved in the public learning record.
Credential / Hogeschooltaal
Nederlands B2
Foundations credential, preserved in the public learning record.
Fontys / Event organiser
Business Academy Event
Organised the Business Academy Event as an internal Fontys project.
Credential / Google Career Certificates
Technical Support Fundamentals
Professional practice credential, preserved in the public learning record.
Versteijnen Logistics / Developer
Optimize Data Entry at Versteijnen Logistics
Improved data-processing speed and consistency with AutoHotkey automation.
Avans University of Applied Sciences
Bachelor Business IT & Management
Bachelor programme completed with a graduation grade of 9.
Fontys / Developer
Handlefy Storage Application Database
Designed the relational database for the Handlefy 1.0 storage application.
Fontys / Process analyst
BPMN Goods Documents at Versteijnen Logistics
Mapped and improved the goods-received document flow using BPMN.
Versteijnen Logistics / Part-time
Administrative Assistant
Part-time administrative role at Versteijnen Logistics.
Credential / Microsoft
Excel Specialist 2013
Foundations credential, preserved in the public learning record.
Gors / Developer
Optimize Banking Process at Gors
Developed AutoHotkey automation for the organisation’s banking process.
Fontys University of Applied Sciences
Bachelor ICT
Bachelor-level study in information and communication technology.
Media Markt / Part-time
Computer Department Sales Associate
Part-time sales role in the computer department in Middelburg.
HZ University of Applied Sciences
Bachelor Business Economics
Bachelor-level study in business economics.
Scalda / Researcher
ProActive Banking Implementation Research
Researched the implementation of the ProActive banking module at Gors.
Gors / Developer
Optimize Creditor Process at Gors
Improved the creditor process with ProActive templates.
Gors
Administrative Assistant
Administrative role at Gors in Goes.
Maritime Institute De Ruyter
MBO Nautical Officer
Vocational maritime programme for nautical officers.
The line continues
Built work over borrowed claims.
New projects, public repositories, useful writing, and meaningful career changes can join the timeline when there is something concrete to show.