WAJ · Software Engineering

// PROFILE 2026

</> AI Software Engineer

Walter A. Jablonowski

AI Systems & App Development

25+ years of development experience

What I deliver for you

▸

AI Agents & Automation – autonomous workflows that measurably accelerate business processes

▸

Data Solutions – from pipelines through analytics to scalable data platforms

▸

App Development – high-performance web & mobile apps, AI-assisted and built in record time

▸

Architecture & Consulting – 25+ years of experience across languages, stacks and industries

Technology Focus

AI Agents LLM Integration MCP Prompt Engineering PHP JavaScript Python TypeScript SQL MySQL / MariaDB Oracle SQL Server

Languages

German Native speaker

English C1 · confident in reading, writing and comprehension

Availability

Immediately

Freelance

up to 100 %

Permanent role

16–20 h, temporarily full-time

Engagement

Remote / Hybrid

Location

Bamberg, DE

Mailwalterjab@outlook.com Phone+49 160 99658047

Webwalter-a-jablonowski.github.io LinkedInlinkedin.com/in/waj-ai

Scan or click for contact details

QR code with contact details – opens a large view for scanning

01

Profile

Software developer with over 25 years of professional experience designing and building demanding applications. Current focus: AI systems – from autonomous AI agents through business process automation to data solutions with LLM integration. I develop consistently AI-assisted myself and therefore deliver substantially faster at consistently high quality. Broad technology experience across many languages and stacks lets me get up to speed quickly in any environment.

25+
Years of professional software development
40+
Successfully completed projects
10+
Programming languages used in production

02

Services

AI Agents & Automation

Autonomous agent systems and workflow automation that take over repetitive business processes – including tool integration and monitoring.

Data Solutions

Retrieval-augmented generation, semantic search, data pipelines and analytics – from architecture through to operations.

App Development

Web and mobile applications, AI-assisted development: shorter time to market with no loss of quality.

Architecture & Project Management

System architecture, technology selection, code reviews and modernisation, plus technical project management.

03

Core Competencies

AI

AI-assisted development

Python, TypeScript

MS Agent Framework

OpenClaw, HermesNew

Web Development

PHP

OOAD

JavaScript

HTML, CSS

Database

SQL

Relational DB design

MySQL, SQL Server, Oracle

Earlier Projects

C# Java C/C++ Objective-C .NET iOS apps Android UML XML/XSLT Xcode Visual Basic VBA

04

AI Skills in Detail

Agents & Orchestration

AI agents & tool use

MCP

LangChain / LangGraph

LLM Integration

LLM integration

Prompt Engineering

Multimodal AI (vision, speech)

Data & Retrieval

Data pipelines

Embeddings & semantic search

Vector databases

Evaluation & Validation

LLM Evaluation

Pydantic

05

Project History

The more recent projects listed (built with AI) are only a selection – many further projects exist, since AI makes very rapid development possible. Older projects were written by hand.

08/2026 – present

ongoing

AI / Development

Autonomous Software Development – Harness for Iterative Improvement

Concept, architecture, development

Runner for autonomous iterative improvement: a goal and a budget are set, and the system works a deliverable in focused individual steps
Assessment is done by a second, independent agent instance with read-only permissions – probabilistic scoring, but deterministic control flow with defined abort paths

Stack: Python · Claude Code CLI · YAML · NDJSON · HTML · JavaScript · pytest

08/2026 – present

ongoing

AI / Back Office

Framework for AI Automation of Back-Office Processes

Concept, architecture, development

Modular automation of document and knowledge work, installed on the customer’s own premises; nine step types from parsing to approval, four parsing stages up to OCR
Incoming invoice module based on EN 16931 with an end-to-end audit trail, budget limits, simulation mode and persistent human approvals

Stack: Python · SQLite · Gemini · Ollama · YAML · Docker · REST · OCR · pytest

05

Project History (continued)

07/2026 – present

ongoing

AI / Development

Central Monitoring of AI Coding Agents Working in Parallel

Concept, architecture, development

A single read-only window shows what every coding agent is working on across all projects – type of action, command, purpose and runtime, sorted by urgency
Per-session metrics with cost, context utilisation and changed files, including a jump into the already open editor instance

Stack: Python · aiohttp · YAML · HTML · JavaScript · CSS · PowerShell

07/2026

1 month

AI / Customer Service

AI-Assisted Support System with Escalation to Humans

Analysis, architecture, development

End-to-end path from web capture through the ticket and the knowledge-based chat to handover to a human agent
Answers are grounded against a knowledge base and backed by sources; the conversation state per ticket is held multi-tenant in a YAML file

Stack: Python · FastAPI · OpenRouter · BM25 · YAML · PHP · JavaScript · pytest

07/2026

1 month

AI / Marketing

SEO Agent for Classic and AI-Assisted Search

Concept, architecture, development

Scheduled agent that audits a website, reworks pages for both classic and AI-assisted search and delivers the result on a branch of its own
Data from crawl, Search Console, Analytics, SERP and AI citations is condensed into findings; interchangeable adapters per building block, full restore if a check fails

Stack: Python · OpenRouter · Gemini · Ollama · SQLite · Search Console · GA4 · Git

05/2026 – present

ongoing

AI / Knowledge

Agentically Maintained Knowledge Base

Concept, architecture, development

File-based knowledge base in Markdown that an internal AI agent organises on its own: placing, restructuring, index maintenance and resolving contradictions
Every change is atomic, logged, versioned and reversible; a detected inconsistency freezes the database – crash-safe on file system primitives alone

Stack: Python · Anthropic API · OpenRouter · Gemini · Markdown · YAML · pytest

05

Project History (continued)

04/2026 – 07/2026

4 months

AI / IT Operations

Log Viewer with AI Analysis for Arbitrary Formats

Concept, architecture, development

Central view for log files in any format with AI-assisted analysis; over 100,000 entries per file stay manageable through database synchronisation
Pluggable type system of detection, parser and renderer, plus a filter language whose expressions can be saved and generated by the AI

Stack: PHP · Symfony YAML · SQLite · MySQL · SQL · JavaScript · HTML · CSS

12/2025 – 01/2026

1 month

AI / Sales

Natural Language Database Querying

Concept, architecture, development

Questions in natural language are translated into SQL, validated before execution and presented as a table or chart
Several databases at once: the model picks the right source itself and also answers questions that span database boundaries

Stack: Python · FastAPI · MCP · Gemini · OpenRouter · SQLite · MySQL · Jinja2

11/2025 – 07/2026

9 months

AI / Web

Voice Agent for Customer Support on the Website

Concept, architecture, development

Voice assistant on the website that answers visitor questions in dialogue and calls tools while doing so, such as navigating to the relevant page
Real-time audio over WebSocket to a live speech model, brokered by a custom relay service that keeps keys and system prompt away from the browser; bilingual German and English

Stack: JavaScript · WebSocket · Cloudflare Workers · Gemini Live · Web Audio API

10/2025 – 04/2026

6 months

Self-Management

Application for Activity and Feedback Tracking

Concept, architecture, development

Tool for recording your own activities over the year – what was actually done and how much time things really take
Project and calendar view onto the same data, deliberately designed around condensed highlights rather than individual events; multi-user and database-free

Stack: PHP · Symfony YAML · JavaScript · HTML · CSS · Composer

05

Project History (continued)

10/2025 – present

ongoing

AI / Tasks

AI-Assisted Time-Based Task Board

Concept, architecture, development

Task board along the time axis of current and upcoming tasks, plus a scrollable bar of months, weeks and days reaching into coming years
AI sidebar with tool access to the entire board, every proposed change acceptable individually; archiving happens automatically at the turn of the month

Stack: PHP · Symfony YAML · JavaScript · HTML · CSS · OpenRouter · Gemini · Ollama

08/2025 – present

ongoing

Tools

Snippet and Prompt Management with System Integration

Concept, architecture, development

File-system-based management of reusable text blocks and prompts, with nested inclusion and reuse without duplication
Two interfaces onto the same data: a web application for maintenance and a Windows application that inserts at the cursor position via a system-wide keyboard shortcut

Stack: PHP · Symfony YAML · JavaScript · CSS · C# · .NET 8 · WinForms

06/2025 – 04/2026

10 months

Software

Markdown Editor as a Dependency-Free Browser Library

Concept, architecture, development

Editor library for the browser with no dependencies at all: no build step, no bundler, no server – included via a single script tag
Extensible through registered specification classes per markup element, with a switchable end-user and expert mode; developed entirely AI-assisted

Stack: JavaScript · HTML · CSS · Markdown · PHP

04/2025 – present

ongoing

Information

Condensing Large Amounts of Information into a Single View

Concept, architecture, development

Board that bundles large amounts of information into a small space, to create an overview in the first place and keep it usable
AI sidebar that reads the board and changes it structurally; stable direct references survive renaming and moving, with a backup before every write

Stack: PHP · Symfony YAML · JavaScript · HTML · CSS · Composer

05

Project History (continued)

12/2024 – 06/2026

18 months

Software

Filter Component with Its Own Expression Language

Concept, architecture, development

Reusable component that evaluates complex boolean filters against a full text or against nested records – for crawlers and interfaces with typed-in filters
Custom expression language with parentheses, regular expressions, set and length checks, chronological date comparison and an optional synonym list

Stack: PHP · Symfony YAML · Composer · regular expressions

11/2024 – present

ongoing

AI / Projects

AI-Assisted Board for Steering Many Projects

Concept, architecture, development

Board for steering a larger number of parallel projects with hierarchical tags and search across the current state, including unsaved changes
AI sidebar that reads the board along with linked files and changes any structure through tool calls; file access stays confined to a base directory

Stack: PHP · Symfony YAML · JavaScript · HTML · CSS · Google AI Studio · OpenRouter

03/2024 – present

ongoing

Health

Nutrient Tracking with Minimal Interaction Effort

Concept, architecture, development

Daily tracking of nutrient intake across roughly 43 vitamins, minerals, fatty acids and amino acids – an analysis that cannot be done by hand
Rigorously designed around few interaction steps and extended with exercise, supplements and finances; in continuous daily personal use since the start of 2024

Stack: PHP · Symfony YAML · JavaScript · HTML · CSS · Composer

08/2021

1 month

Recycling

Backend / UI for External Information Access

Development

Backend and UI for external partners

Stack: JavaScript · HTML · CSS · C# · .NET

05

Project History (continued)

01/2021 – 07/2024

43 months

Statistics

Further Development of a Statistics Web Application

Development

Further development of a web application in the field of statistical data

Stack: PHP · HTML · AdminLTE · Chart.js · CSS · JavaScript · jQuery

05/2019 – 01/2021

21 months

Advertising

New Web Application for Business Administration

Development

Database-driven application for handling business operations, replacing a legacy system
Development with as few dependencies as possible, to give the application a very long service life and minimise migration effort caused by frameworks
Generating interfaces from building blocks, further components for a small framework including an ORM
Developing the database and forms on top of the framework

Stack: Custom framework · PHP · JavaScript · jQuery · BS · MariaDB · SQL

01/2018 – present

ongoing

Open Source

Development of Open Source Applications and Components

Development

Development of open source components and applications (github.com/walter-a-jablonowski); not all of it is published
Focus on simplicity, in contrast to the general trend towards ever more complex web frameworks, and on automation – the same result can often be achieved with far less complex means
Areas of interest: information management, tools for data acquisition and communication, framework components, tools

Stack: PHP · JavaScript · jQuery · YAML · JSON · BS · HTML · CSS

11/2015 – 01/2016

3 months

Publishing

Extension of an iOS Application, iPad Version, Port to Android

Development

Extending an iOS application from the publishing sector with filter functions and various UI features
Migrating the data from files to SQLite using a self-written tool, rewriting the data core
iPad version, port to Android

Stack: Objective-C · Java · PHP · Xcode · Android Studio

05

Project History (continued)

09/2015 – 10/2015

2 months

Publishing

Extension of an iOS Application

Development

Extending an iOS application with UI features
Switching the barcode scanner from a library to the iOS SDK, updating libraries

Stack: Objective-C · Xcode

09/2015 – 12/2017

23 months

Statistics

New Statistics Web Application

Development

New development of a web application in the field of statistical data
Layout based on AdminLTE, implementation of the graphic design, animated menus and the like
Custom classes for the app (base classes, App, ErrorHandler, DB, Log, Data, Captions etc.) plus client-server communication and a custom templating system
Dashboard with various charts based on data collected via SDK and Chart.js, rearranging of widgets
Generating user-defined charts, YAML chart definition format
Data lists with grouping, expandable, sorting, (i) buttons with additional popup information, detail view with data list, list functions, menus
Mobile view for phone and tablet with design adjustments (responsive)
User settings, admin, user help, about, imprint, privacy and further functions

Stack: PHP 5/7 · HTML · AdminLTE · Chart.js · CSS · JavaScript · jQuery · YAML

02/2015 – 03/2015

2 months

E-Commerce

Contribution to an eCommerce System

Development

Contributing to an eCommerce system

Stack: PHP

08/2012 – 10/2012

3 months

Embedded

Development with .NET Gadgeteer

Analysis, design, development

Development with .NET Gadgeteer (in-house project)

Stack: C# · .NET Framework · .NET Micro Framework · .NET Gadgeteer Hardware

05

Project History (continued)

02/2012

1 month

Software

Contribution to an iPhone App for a Web 2.0 Platform

Development

Contributing to an iPhone app – the iPhone version of a Web 2.0 platform

Stack: iOS SDK 5 · Objective-C · Xcode

07/2011 – 09/2011

3 months

Media

Development of a Web 2.0 Web Application

Planning, analysis, architecture, development

Development of a Web 2.0 application in the field of feed aggregation
Backend with data layer and backend functions, web frontend

Stack: PHP 4 · HTML · CSS · XML · JavaScript · jQuery

12/2010

1 month

Automotive

Automotive iPhone App, Training of Developers

Analysis, design, development

Development of an iPhone app for vehicle information as a basis for further app development; the functional details of the project are confidential
Training developers using the app

Stack: iOS SDK 4 · Objective-C · Xcode · Interface Builder · Web Services · XML

10/2010 – 12/2010

3 months

Services

Development of an iPhone App in Consumer Services

Analysis, design, development

Contributing to the development of a service platform as an iPhone app in the consumer services sector

Stack: iOS SDK 4 · Objective-C · Xcode · Interface Builder · Web Requests · XML

07/2010 – 08/2010

2 months

Advertising / B2B

Development of a News iPhone App

Analysis, design, development

Development of an iPhone app for communicating news items in the B2B sector
News presented as a list, detail view and PDF view, plus push messages, user login and an access log in the database
Both the iPhone app and a server interface were developed, the latter making existing data (news, PDF) accessible for use in the app

Stack: iOS SDK 4 · Objective-C · Xcode · PHP 4 · MySQL · SOAP · Push

05

Project History (continued)

07/2010 – 08/2010

2 months

Telecommunications

Development of an iPhone App for a Telecommunications Group

Program design, development

Development of an iPhone app for a large German telecommunications group in the area of fee payment

Stack: Apple iPhone SDK 3 · Objective-C · Xcode · Interface Builder

11/2009

1 month

Real Estate

New iPhone App for a Real Estate Portal

Analysis, design, development

Development of an app as an entry point to the platform of a real estate portal
Querying location information (GPS), searching and displaying properties from the database by search text/location or geo coordinates, plus user login

Stack: iOS SDK 3 · Objective-C · Xcode · Interface Builder · GPS API

02/2009 – 12/2009

11 months

Public Sector

SQL Server Database Development

Database developer

SQL development in a large database system used to manage the entire nationwide inventory of a German federal agency
Implementing RfCs (requests for change), developing reports, complex bulk data changes

Stack: MS SQL Server 2000/2008 · SQL · Reporting · DTS · Crystal Reports · .NET

01/2009 – 03/2009

3 months

Media

iPhone Radio Apps

Development

Contributing to several iPhone apps for receiving radio broadcasts on the iPhone

Stack: iOS SDK 3 · Objective-C · Xcode · Interface Builder

05

Project History (continued)

07/2008

1 month

Software

Tool for Time Tracking, Project Tracking and Billing in Software Projects

Analysis, design, development

Main purpose: monitoring budget compliance in software projects
Development of an Access-based multi-user solution for recording working hours per order or task, with analysis for tracking adherence to schedules and budgets, plus functions for billing end customers and staff
Order management, task overview per user with the option to assign tasks to users, an integrated specification document per order
User management with different access rights depending on the user role (developer, management)

Stack: MS Access 2003 · VBA · SQL

03/2008

1 month

Technical Documentation

Bug Reporting Component Connected to a Bug Tracking System

Development

Development of a problem report component for an application in the technical documentation sector
Connection to a bug tracking system

Stack: C# · Visual Studio 2008 · .NET Framework 3.0 · WPF · Web Services

12/2007 – 03/2008

4 months

ERP / SME

New Development of an ERP System

Analysis, design, development

Development of an ERP/invoicing system for SMEs with customer master data, supplier master data, articles, prices per supplier, sales orders, purchase orders and a complete document history per transaction
Interface optimised for ease of use, search and filter functions, printing functions
Design of the relational data model, SQL development, user interface design, development of the client application
Approx. 60 % implemented; the customer postponed completion to the end of 2008

Stack: Visual Basic .NET · .NET Framework · WinForms · ADO.NET · MS Access

05

Project History (continued)

11/2007,
07/2008 – 08/2008

3 months

Industry

New Application for Data Cleansing

Analysis, design, development

Development of software for flexible validation and cleansing of large Oracle databases holding several million records (statistical data from industrial production)
Later: advisory work on integrating the tool into a larger application, implementation of further components

Stack: Visual Basic .NET · .NET Framework · WinForms · Oracle · PL/SQL · Q-DAS

04/2008 – 05/2008

2 months

Industry

Component for Building Hierarchical Data Filters

Analysis, design, development

Development of a general-purpose component (DLL) for building hierarchical, user-defined (unbounded) data filters in VB.NET applications
XML format for filter definitions; the component was intended for use in several applications

Stack: Visual Basic .NET · .NET Framework · WinForms · Oracle · PL/SQL · XML

07/2007 – 12/2008

18 months

Industry

New Application for IT Support

Analysis, design, development

New development of an application for in-plant IT support with a ticket system, storage of every action per ticket (complete history) and a ticket workflow that accounts for subcontractors
Sending email from the application, knowledge base, analysis reports, extensive graphical evaluations (bar and pie charts including hierarchical data filters), printing of all data, access permissions and a good deal more
Development of the complete application: design of the relational data model, queries and procedures in PL/SQL, the entire client application, ongoing development to requirements
08/2008: development of a modified version of the application for another department

Stack: Visual Basic .NET · .NET Framework · WinForms · ADO.NET · Oracle · PL/SQL

05

Project History (continued)

02/2007 – 12/2008

23 months

Industry

New Plant-Wide Application for User and Access Control

Analysis, design, development

New development of an application for centralised management, validation and provisioning of data, user accounts and access rights for in-house applications
Extensive data import functions to supply the data from five source systems
Connecting third-party applications in order to centralise program access; in its final stage up to 70 applications and a multiple of that in installations
Overviews and reports on all account data for management purposes
Development of the complete application: design of the relational data model, queries and procedures in PL/SQL, the entire client application, ongoing development to requirements

Stack: Visual Basic .NET · C# · .NET Framework · WinForms · Oracle · PL/SQL · XML

01/2007

1 month

Industry

Extension of an Application for Worldwide File Exchange

Development

Extending an application for automated worldwide updating and distribution of files with several features (in user clients and a Windows service)

Stack: Visual Basic .NET · .NET Framework · SQLite · Sparx EA UML Tool

12/2004 – 02/2006

15 months

Furniture Retail

New ERP Application for Solid Wood Furniture Sales

Planning, analysis, design, development

Development of a complete ERP system for handling the trade in solid wood furniture and sales via the internet
Automation of sales through the purpose-built web shop and the eBay platform

Stack: MS Access XP · MySQL · PHP 4 · Visual Studio · C#

05

Project History (continued)

11/2004 – 12/2004

2 months

Software

Preparation for Reworking Approx. 10 Access Applications

Analysis, design, development

Preparations for reworking approx. 10 Access applications after the move to Service Pack 2 of Windows XP
Requirements analysis, implementation for automated program conversion

Stack: MS Access XP · Visual Studio

10/2004

1 month

Mechanical Engineering

Technical Proposal for the Redesign of a Client/Server Application

Analysis

Pre-study for the redesign of a project controlling system, analysis of the existing system with 140 users at two sites
Preparation of a technical study with several redesign strategies, time and cost estimates

Stack: Sybase database · PowerBuilder (for testing)

07/2004 – 10/2004

4 months

Print / Media

Development of a Web Platform for Print Solutions

Development

Development of a web platform for print solutions (product development)
Project not pursued further after 10/2004

Stack: PHP 5 · SQL · MySQL · HTML · XAMPP

01/2002 – 11/2002

11 months

Concrete Industry

Contribution to the New Development of an Application Framework

Development

Contributing to the implementation of an application framework for commercial and technical applications
Function: generating the relational data model, GUI and configurable interface logic at runtime (based on a UML model in XML form)

Stack: Java · XML · XSLT · Together UML · JBuilder

10/2001 – 12/2001

3 months

Concrete Industry

Euro Conversion of an Invoicing Application

Analysis, design, development

Development of a tool for converting approx. 300 installations to the euro (10/2001)
Subsequently carrying out the conversion for all customers step by step

Stack: MS Visual C

05

Project History (continued)

02/2001 – 06/2002

17 months

Concrete Industry

New Software for Production Control in Concrete Plants

Project management / development

New development of software for production in concrete plants: production control, order processing, collection of production data, generation of statistical reports, integration with invoicing systems
On-site installations with customer-specific customisation at plants in Germany and northern France: developing extensions to requirements, adapting formats to the plant equipment and to commercial software
Responsibilities: project management, customer consulting, analysis and design, GUI workflow, implementation of core functionality, coordination with a manufacturer of control systems

Stack: MS Access · Visual Basic · Winsock · SQL Server

01/2001 – 02/2001

2 months

Concrete Industry

Migration of Fleet Scheduling Software

Analysis, development

Migration of a very large fleet scheduling application from Borland C++ to Visual C++ and Win32

Stack: Borland C++ · Visual C++ · Visual Basic (resource file code generation)

09/2000 – 01/2003

29 months

Concrete Industry

Further Development of 3 Software Products

Analysis, design, development

Development work on 3 products (invoicing, financial accounting and fleet scheduling)
Development of functional extensions to requirements
Creating and adapting forms (Forth-like language)
Creating and adapting import/export interfaces (production plants, financial accounting …)

Stack: C · Visual C++ · Borland C++ · MFC · dBase IV/V · Forth-like language

01/1996 – 09/1999

3 years 9 months

Software

Working at a Software Company While Still at School

Development

Various projects as a part-time job while at school: further development of financial accounting software, various tools

Stack: MS Access · Visual Basic · C · Visual C++ · MFC

06

Education

2003

IT Specialist qualification (IHK)IT Specialist for Application Development

1996 – 1999

Part-time work while at schoolDevelopment for a software company

from 1992

Started programmingAt the age of 14 (Borland C)

07

Interests

Professional

AI · Information management · Minimalist web apps · Cloud · UX · Innovative technologies · Nonprofit software · Blockchain

Personal

Nutrition

08

Contact

I look forward to your project inquiry – walterjab@outlook.com · +49 160 99658047 · walter-a-jablonowski.github.io