JEDRZEJ WASZKIEWICZ

My Investment

My Investment is a website that allows you to observe selected investments. We can observe over 1,200 different investment instruments - shares, indices, currencies, raw materials, cryptocurrencies. We can browse the website anonymously or create an account and track the profit or loss from our investment on an ongoing basis. The website was created using React, Typescript and Django. To read rates, it uses numerous public APIs, as well as private APIs and Data Scrape. It uses, among others: API of the National Bank of Poland, API of the Bitbay exchange, API of the Coingecko exchange and API of the IEX platform to display investment rates in real time.

We can track shares from the Warsaw Stock Exchange, the US Stock Exchange, the gold and silver raw material market, the cryptocurrency market and the index market. The interface is operated in JavaScript, while the backend is handled by Django. The website is fully mobile and adapted to phones.

Memory Master

Brain training is based on the idea that mental stimulation can improve neuroplasticity. It is the ability of the brain to create and reorganize connections between brain cells in response to new stimuli and tasks. The Brain Training Game Boosts Executive Functions study published in PLOS One in 2013 found that people who engaged in brain training games showed improvements in information processing speed, memory and executive functions.

The game was created entirely in Javascript and uses localStorage to store results, user settings and preferences. The website is fully mobile and adapted to play on your phone.

Memory Master is a game that intensively simulates short-term memory, improving focus and concentration.

It involves remembering the letters and positions that appear on the board and, in the extended version, also the colors of the letters. As the difficulty increases, we have to remember more and more information.

The game requires us to simultaneously remember information and use information already memorized, strongly stimulating the brain.

Remember the letter that appears and the field in which it appears. The letter and the field are unrelated and independent.

If the same letter appears on the same or any other field two turns later, click the "Letter" button. If the same or a different letter appears in the same field two turns later, click the "Position" button. If both the letter and the position match, click both buttons.

If the letter does not match the letter from two turns ago, you do not click anything. If the field does not match the field from two turns, you do not click anything.

Play Here memorymaster.vercel.app/

AB-tests

AB testing software built in React and Django using Django Rest Framework and Cookies.When loading the tested page, the script will distribute the traffic equally to both subpages and calculate the effectiveness of each version of the page.

When the user visits a given link, the script will display one of two possible versions and will measure the user's behavior on this page. Cookies remember which version was displayed to the user and display the same version again when they return to the website.

MotorwayMap

The website was created using React, React-Router, Redux, Typescript and Django and uses the Leaflet map.It is fully mobile on all devices.

MotorwayMap is a map of all investments in Poland carried out by the largest state investor, General Directorate for National Roads and Motorways. The total investment amount is over PLN 40 billion. The number of tasks is over 100, and over 1,200 km of motorways and expressways are under construction. The map shows what and where investments are being made.

The investment map shows all road sections currently under construction. It shows where the section is located on the map, its length, who is the contractor, what is the amount and the deadline for completing the investment.

The appearance and event handling were programmed using React, React-Router, Redux, Typescript. The backend technology is Django. The Leaflet and OpenStreetMap libraries were used to create the map.