Tomasz Gerstel

Junior Java | Fullstack Developer

Briefly about me

I have almost two years of experience as a Junior Software Developer in a ‘fintech’ company. In addition, I have several years of non-commercial experience in creating utility tools (also implemented on servers), which, for example, have supported my work and the work of others in the production plant in the past. I have “Technical and IT” studies (master) and Postgraduate studies in Programming in Java more

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Practical skills


My Projects

J-Countant

The application helpful in managing finances in a small business (a modified version of the application originally written in Python, using other technologies). The tool consists of two separate applications (‘frontend’ and ‘backend’ are defined separately).

After entering data on actual transactions carried out in the business, the tool allows you to determine the profit, the tax base and the amount of taxes necessary to pay (depending on the type of taxation).

Characteristics

Application written in the REST architecture, working on data stored in the PostgreSQL database. The ‘back-end’ part has now been implemented along with the database in Docker containers on a VPS server under Debian. The ‘front-end’ part, communicating with the ‘back-end’ part, was placed in a different location using a simple service offered by Amazon Web Services (AWS).

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Quality Troubles Database

An application supporting a database of quality problems (typical defects and procedures for improvement) occurring in a specialized plant producing plastic bottles.

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Lins


Utility Recorder

A desktop tool helpful in monitoring the consumption of utilities, such as water or electricity (it can also be used to record other things). It saves the data to a file, reads it into a table and calculates consumption between records, totals and averages. The data is presented in a simple graph.

UtilityRecorderToolImage

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Linki


Py-Countant

The application helpful in managing finances in a small business. After entering data on actual transactions carried out in the business, the tool allows you to determine the profit, the tax base and the amount of taxes necessary to pay (depending on the type of taxation).

Py-CountantAppImage

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Energy balance monitoring application

My final project in Java Application Development. The app is a food/activity diary and provides personal energy balance calculations. The view layer uses templates.

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Production Execution Calculator

A simple tool that calculates the estimated production lead time and other values based on inputs such as machine cycle time, production volume and product weight. Useful for daily production supervision in a packaging production plant in the “injection-blowing” process.

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Production Execution Calculator - Android

Android version of the tool that calculates the estimated production lead time and other values based on inputs such as machine cycle time, production volume and product weight. The tool is useful for daily production supervision in a packaging production plant in the “injection-blowing” process.

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Puzzle game: Number puzzle

A simple puzzle game where you move blocks to arrange them in a row in the correct order.

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