Michał Żarnecki Portfolio

Search engine based on Elasticsearch

Posted on 1 November 2019  in Bez kategorii

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

Elasticsearch, Kibana

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Business network graph based on Neo4j and Sigma.js

Posted on 24 February 2019  in Bez kategorii

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

Elasticsearch, Neo4j, SigmaJS

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Machine Learning – topic modelling for german companies description

Posted on 24 February 2019  in Bez kategorii

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

Machine Learning

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Banking portal

Posted on 30 December 2017  in Bez kategorii

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

Apache2, Centos, gulp, Jquery, nodejs, npm, PHP, PostgreSQL

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System to collect networking and finance data about German companies

Posted on 1 July 2017  in Bez kategorii

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

Azure, Cassandra, Data mining, data science, DBMS, Docker, Jenkins, Machine Learning, MongoDb, Neo4j, Neural networks, Nginx, NLP, Pandas, regular expression, ScikitLearn, Server administration, text mining, Ubuntu, Yii2

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Veolia – mobile application to ensure equipment reliability

Posted on 1 October 2016  in Bez kategorii

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

Android, API

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Consulting ERP system

Posted on 2 February 2016  in Bez kategorii

Picture 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

JavaScript, Laravel, Symfony

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Mediterraneum

Posted on 29 January 2016  in Bez kategorii

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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Casual worker

Posted on 22 January 2016  in Bez kategorii

Picture from programa.pl
Web application for employers and employees to simplify transactions and taking orders.

Responsibilities:

• implementing system modules and functionalities
• collecting data and creating project specification

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Elephant Door

Posted on 1 December 2015  in Bez kategorii

Picture from programa.pl

Smart alarm system.

Responsibilities:

• implementing website functionalities
• implementing Java selenium test suites for interface

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