Michał Żarnecki Portfolio

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

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

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

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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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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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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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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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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Smart alarm system.

Responsibilities:

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

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Responsibilities:

• technical project management
• system modules configuration and modification
• implementing system modules and functionalities
• integration with external JavaScript libraries
• implementation of messages and notification system
• implementation of user calendar module
• implementation of invoices module
• implementation of users management and authorization module
• implementation od electronic data interchange module
• creating and running unit tests and Selenium IDE interface test
• project optimization, acceleration, conducting HTML/CSS validators tests and server load tests
• migrating projects to new versions and improvements
• collecting data and creating project specification