Michał Żarnecki Portfolio

I'm a programmer and lecturer. My work is related to programming in Python/PHP/JavaScript and designing systems and solutions related to AI/machine learning, data mining, big data and natural language processing.

Category: projects

AI chatbot for analysing companies source documents

Posted on 26 May 2024  in projects

https://chat.companyhouse.de/


AI-based chatbot for retrieving reliable, up to date and precise information about companies.
Chatbot is based on streamlit framework and uses vector database based on postgres pg_vector extension to store and access trade register documents.
Application is using large language model (LLM) Llama3 together with retrieval augmented generation (RAG) approach which allows to ask and get response to any question related company and managers history as well as financial condition and important changes.
Together with response also source documents are listed making this approach reliable business intelligence tool.

Responsibilities:

  • build application prototype
  • implement application code parts
  • implement authentication mechanism
  • specify and coordinate works related to building chatbot interactions
  • specify and coordinate works related to sychronizing in real time source documents and make them accessible for LLM
  • measure answers quality

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Category: projects

Self-driving vehicle based on tensorflow CNN and RasberryPi

Posted on 26 January 2023  in projects

Responsibilities:
– prepare laboratories for students related to computing vision recognition and training autonomus vehicle using convolutional neural network and tensorflow library
– assemble vehicles using Raspberry Pi 4 Model B, motors and other parts
– configure environment for model training and run model on Raspbian OS
– implement module for object detection

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Category: projects

Search engine based on Elasticsearch

Posted on 1 November 2019  in projects

Pictures from companyhouse.de

 

Search engine based on Elasticsearch

Responsibilities:

  • setup multi-node Elasticsearch server structure
  • implementing efficient synchronization script
  • configuring queries and score functions

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Category: projects

Business network graph based on Neo4j and Sigma.js

Posted on 24 February 2019  in projects

Pictures from companyhouse.de

 

Web application displaying and allowing to search, filter and export network graph

Responsibilities:

  • Setup Neo4j graph db
  • Implement data exporter, proxy and cache
  • Implement network graph based on sigma.js library
  • Support navigation, search and filtering graph
  • Implement custom renderers for graph nodes and edges
  • Implement nodes distribution algorithm

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Category: projects

Machine Learning – topic modelling for german companies description

Posted on 24 February 2019  in projects

Machine learning model and web service predicting company industry codes based on description.

Responsibilities:

  • Implement machine learning model classyfing text into over 100 classes
  • German text preprocessing and normalization
  • Evaluation and, upgrading model parameters
  • Implement web service for real time prediction

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Category: projects

Banking portal

Posted on 30 December 2017  in projects

Banking and finances web portal about.
bs.net.pl

Responsibilities:

  • Creating importer script to automatically get all data from old version based on drupal to new project
  • implementing module for article publictaion on social pages: facebook, twitter
  • Implementing new layout and widgets based

 

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Category: projects

System to collect networking and finance data about German companies

Posted on 1 July 2017  in projects

Pictures from moneyhouse.de

 

Web application to collect networking and finance data about German companies.

Responsibilities:

  • Implementing data mining tools and parsers using deterministic algorithms and deep learning models
  • creating fast and efficient search engine
  • carrying out integration with external platforms, APIs, web-services
  • working with Selenium, automation of acceptance, integration, functional and unit tests, TDD
  • conducting data analysis using Python, R
  • server environment setup and configuration

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Category: projects

Veolia – mobile application to ensure equipment reliability

Posted on 1 October 2016  in projects


Picture from programa.pl
Mobile application for Veolia workers to conduct Inspection of important equipment. Application is using web-service to pass data into cebtralized company system.

Responsibilities:

  • implementing mobile application
  • improving app transfer speed and data reliability
  • implementing authentication methods and synchronization
  • designing communication protocol
  • application releases, updates and meintanance

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Category: projects

Consulting ERP system

Posted on 2 February 2016  in projects

ecology_systemPicture from programa.pl

System for the ecology consulting company.

Responsibilities:

  • technical project management
  • system modules configuration and modification
  • implementing system modules and functionalities
  • implementation of invoices module
  • implemenatation of users managemant and authorisation module
  • implementation of electronic data interchange module
  • creating and running unit tests and Selenium IDE interface tests
  • project optimization, acceleration, conducting HTML/CSS validators tests and server load tests
  • collecting data and creating project specification

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Category: projects

Mediterraneum

Posted on 29 January 2016  in projects

Picture from programa.pl

ERP/CRM system and mobile app for tour operator.

Responsibilities:

  • creating mobile applications for iOS system and iPhone/iPad devices
  • implemantation of API services

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