Ernest Bieś
Ernest Bieś — Software Engineer // Independent Researcher
I graduated in Computer Science from the State Higher Vocational School in Tarnów, where the University Senate awarded me the Medal for Outstanding Graduates of PWSZ in Tarnów. My interest in computing began at an early age, and I took part in numerous IT competitions during my education. I co-authored “Metaheuristic Exponential Search Optimization with Covariance Matrix Adaptation (MES-CM)”, published in Evolutionary Intelligence by Springer Nature. Today, I focus on building web and mobile applications while developing my engineering skills and my approach to AI-driven development.
Contact// Research
Research papers
I combine programming, algorithm analysis, and experimentation in my research. I develop ideas, evaluate their behavior, and describe the results in scientific publications. You can also find my publications on Google Scholar.
Metaheuristic Exponential Search Optimization with Covariance Matrix Adaptation (MES-CM)
A research paper published in Evolutionary Intelligence by Springer Nature. It presents MES-CM, a single-solution metaheuristic that combines a dedicated pseudorandom search mechanism with covariance matrix adaptation to guide the search toward better solutions. The algorithm explores candidate moves at multiple distance scales, balancing local refinement with broader exploration without using a population of solutions. The implementation is available both as a MEALPY-compatible optimizer and as a standalone version based on NumPy.
// Research
Competitions
Selected projects prepared for competitions and conferences, combining programming, technical analysis, and practical problem-solving. Some were presented or recognized by the organizers.
iOS Device Data Extractor
An Autopsy module for creating encrypted or unencrypted backups of iPhones and iPads running iOS 10.2 or later. It can extract files from either type of backup, including backups created with iTunes, and package the extracted data as a ZIP archive for use with tools such as iLEAPP.
Camera Fingerprint PRNU
An Autopsy module that uses photo-response non-uniformity (PRNU) to assess whether a photograph was taken by a particular camera. It analyzes characteristic variations in the sensor’s response to light rather than relying on metadata such as EXIF. These variations are used to determine the sensor’s distinctive pattern, known as the camera’s fingerprint.
// Projects
Personal projects
These projects date back to my education and the start of my career, before AI-assisted development tools became widely available. They show how I developed my engineering skills and approached problems independently at that stage. The source code is stored in private repositories.
Media Browser
Mobile application for Android and iOS
An application for finding information about films, TV series, and people in the film industry, developed for my engineering thesis.
Media Browser
An application developed for my engineering thesis that lets users search for and browse information about films, TV series, and people in the film industry. It runs on Android and iOS and supports Polish and English.
Technology stack
Application
JavaScript · React Native · RN Navigation · RN SVG · RN Elements · RN Paper · MobX
Server application
JavaScript · Node.js · Hapi.js · nodemon · JSON Web Token · Joi · bcrypt · Nodemailer · lodash
Database
MongoDB · mongoose · SQLite
FOOTBALL Club
Responsive website
A football club website template with club information and an administration panel for managing content.
FOOTBALL Club
A football club website template featuring club information, match reports, and detailed statistics. An administration panel allows users to manage the website’s content.
Technology stack
Application
JavaScript · HTML · CSS · React.js · React Router · React Redux · Styled Components · Font Awesome · Material UI · React Spinners
Server application
JavaScript · Node.js · Hapi.js · JWT (JSON Web Token) · bcrypt
Database
MongoDB · mongoose
Technical information
Supported platforms
Supported languages
toDo
Responsive website
A to-do application for organizing everyday tasks.
toDo
A to-do application that helps users organize and manage their tasks.
Technology stack
Application
JavaScript · HTML · CSS · React.js · React Router · Styled Components · Redux
Technical information
Supported platforms
Supported languages
c0nnected_
Responsive website
A React chat application built around a Hall of Fame concept, where users solve a puzzle before posting a message.
c0nnected_
A React chat application built around a Hall of Fame concept. Users must solve a puzzle before posting on the message board, and each user can leave only one message.
Technology stack
Application
JavaScript · HTML · CSS · React.js · React Router · Styled Components
Technical information
Supported platforms
Supported languages
RMS
Responsive website
A restaurant management system for adding, editing, and removing menu items.
RMS
Restaurant Management System is a web application for managing restaurant menu items. It includes a form for adding products and tables for viewing and editing their details. The project combines a React frontend with an Express.js backend and uses the HTTP methods GET, POST, PUT, and DELETE.
Technology stack
Application
JavaScript · HTML · CSS · React.js · React Router · Styled Components
Server application
JavaScript · Node.js · express.js
Database
MongoDB · mongoose
Technical information
Supported platforms
Supported languages
Progr4mm3r
Responsive website
A portfolio builder and template for developers, and my first project built with React.
Progr4mm3r
A portfolio builder and template for presenting a developer and their projects. It was my first React website and gave me practical experience with JavaScript, HTML, CSS, and web interface design.
Technology stack
Application
JavaScript · HTML · CSS · React.js · React Router · Bootstrap · i18next · Styled Components · Prop Types · Local Storage · Formik · Yup
Technical information
Supported platforms
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Quotes Service
Responsive website
An application that fetches quotes from an external API.
Quotes Service
An application that fetches quotes from an external API. Users can display another random quote or return to the previous one.
Technology stack
Application
JavaScript · HTML · CSS · React.js · Styled Components · Redux · Redux Thunk
Technical information
Supported platforms
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Online library
Responsive website
A personal book library built using only JavaScript, HTML, and CSS.
Online library
A personal book library built using only JavaScript, HTML, and CSS. Users add books through a form, browse them in a table, and remove selected entries. The library’s data is stored locally in the browser using localStorage.
Technology stack
Application
JavaScript · HTML · CSS
Technical information
Supported platforms
Supported languages
Random Number Generator
Responsive website
A random number generator built using only HTML, CSS, and JavaScript.
Random Number Generator
A random number generator built using only HTML, CSS, and JavaScript. Clicking the button generates 20 random integers from 1 to 100 and groups them into two columns: even and odd numbers.
Technology stack
Application
JavaScript · HTML · CSS
Technical information
Supported platforms
Supported languages
Spaceships
Game for PC and Android
A puzzle game combining elements of Battleship and Minesweeper.
Spaceships
A puzzle game combining elements of Battleship and Minesweeper. Built on a client–server architecture, it challenges players to find all the ships on the board in as few moves as possible.
Technology stack
Application
Java · C++ · Apache Netbeans IDE · Swing · Qt · Android Studio
Server application
Java · Spring · C++ · Qt · Postman
Database
PostgreSQL · Java Persistence API
Technical information
Supported platforms
Supported languages
ApocalyptoGame
PC game
A first-person shooter set in a post-apocalyptic world, where the player takes on the role of a soldier.
ApocalyptoGame
A first-person shooter set in a post-apocalyptic world. Playing as a soldier, the user must destroy an enemy spaceship by collecting four power cells and activating a generator. Each cell is obtained in a different way. The game includes interactions with the environment, collectible items, and developed combat and healing systems.
Technology stack
Application
C# · Unity
Technical information
Supported platforms
Supported languages
Quiz app
Mobile application for Android and iOS
A mobile quiz application that downloads tests from an external server.
Quiz app
A mobile quiz application for Android and iOS that downloads tests from an external server. Users can choose a specific test or a random one, answer each question within a time limit, and review their results. A slide-out navigation menu provides access to the application’s screens.
Technology stack
Application
JavaScript · React Native · RN Navigation · Async Storage · NetInfo · Vector icons · SQLite
Technical information
Supported platforms
Supported languages
Image Binarizer
Desktop application
An image binarization application supporting several thresholding methods.
Image Binarizer
An application for binarizing images with low-level, high-level, two-threshold, and conditional methods. Users can load a color or black-and-white image and choose an operation. The application runs in a distributed environment using Remote Method Invocation (RMI), which allows methods to be called on objects in other Java virtual machines.
Technology stack
Application
Java · Apache NetBeans IDE · Swing · Remote Method Invocation (RMI)
Technical information
Supported platforms
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Database Connection App
Desktop application
An application for connecting to PostgreSQL databases through JDBC and browsing their tables.
Database Connection App
An application for connecting to PostgreSQL databases through JDBC and browsing their tables. Connection details can be saved and restored using serialization. If a table contains email addresses, users can compose and send messages with Javax Mail, specifying recipients in the To, CC, and BCC fields, along with a subject and message body.
Technology stack
Application
Java · Apache NetBeans IDE · Swing · JDBC · PostgreSQL · Javax Mail
Technical information
Supported platforms
Supported languages
Database Analyzer
Desktop application
A PostgreSQL performance analysis tool for comparing views, materialized views, WITH queries, and temporary tables.
Database Analyzer
A tool for analyzing PostgreSQL performance when using views (VIEW), materialized views (MATERIALIZED VIEW), WITH queries, and temporary tables (TEMPORARY TABLE). It connects to databases through JDBC and can save and restore connection details using serialization.
Technology stack
Application
Java · Apache NetBeans IDE · Swing · JDBC · PostgreSQL
Technical information
Supported platforms
Supported languages
Task planner
Web application
My first Angular project, covering the framework’s core features.
Task planner
My first school project built with Angular. It explores the framework’s core features, including data binding, forms, tables, dialogs, and fetching data from an external server over HTTP. The interface was styled using HTML and CSS.
Technology stack
Application
Angular · TypeScript · HTML · CSS
Technical information
Supported platforms
Supported languages
Java Good Practices
Desktop application
A project exploring Java coding practices, code review, functional programming, and application testing.
Java Good Practices
A project exploring Java coding practices, code review, and testing. It includes unit tests for validating chess moves using Java, Spring, and JUnit, as well as tests of basic banking operations written with Groovy and Spock. The project also covers functional programming with streams, maps, and filters.
Technology stack
Application
Java · IntelliJ IDEA · Spring Framework · JUnit · Groovy · Spock
Technical information
Supported platforms
Supported languages
Algen
Desktop application
An implementation of genetic algorithms in C and my first project in the language.
Algen
A program implementing genetic algorithms in C. This was my first project in the language.
Technology stack
Application
C · Code::Blocks
Technical information
Supported platforms
Supported languages
inspyred
Desktop application
Lecture and lab materials on bio-inspired algorithms, with examples written in Python using inspyred.
inspyred
Lecture and lab materials introducing bio-inspired computational intelligence algorithms. They include programs and examples written in Python using the inspyred library.
Technology stack
Application
Python · inspyred · IDLE
Technical information
Supported platforms
Supported languages
Pizzeria database
Database project
A pizzeria database designed in Toad Data Modeler, with SQL functions and triggers.
Pizzeria database
A pizzeria database designed in Toad Data Modeler, with SQL functions and triggers. The model covers ordering pizzas with extras and applying discounts for registered customers. It supports orders placed online, by phone, or in person, with fulfillment following payment confirmation.
Technology stack
Project
Toad Data Modeler · SQL · PostgreSQL
Technical information
Supported platforms
Supported languages
Car service station
BPMN model
A BPMN model of the processes in a car service center, prepared as part of the POWER project.
Car service station
A project prepared as part of POWER (Projekt Współpraca Synergia Zarządzanie w Tarnowie), modeling the operation of a car service center using Business Process Model and Notation (BPMN). It covers the repair process from vehicle drop-off to collection, including engine repairs, ordering spare parts, and payment.
Technology stack
Project
Signavio Process Manager - Academic · Business Process Model and Notation (BPMN)
Technical information
Supported platforms
Supported languages
0
public repositories
0
GitHub stars
0
npm packages
0
years of programming
// Approach
How I build products
From understanding user needs to building a product that can evolve. At every stage, I combine the user’s perspective with sound technical decisions and attention to quality.
Understanding the problem
I start with user needs, the product’s purpose, and its constraints. From there, I define priorities and the scope of work.
Purpose and scopeDesign
I design user flows, the interface, and the architecture. I choose technologies with the product’s needs, usability, and future development in mind.
A coherent solutionImplementation
Depending on the product’s needs, I develop web applications, mobile apps, or backend solutions. I use AI-driven development while overseeing implementation, architecture, and code quality.
A working productValidation and evolution
I verify the product’s behavior, test key scenarios, and refine performance. The results help me revisit assumptions and plan the next improvements.
Quality and next steps
Simplicity that supports development
I value readable code, avoid unnecessary complexity, and choose solutions that are easy to understand, test, and maintain.
- DRY
- KISS
- YAGNI
// Skills
Knowledge
I build web and mobile applications and the backend services that support them. My work covers quality, deployment, and ongoing development, supported by AI-driven development tools.
Frontend
I build responsive web interfaces with React and Next.js, focusing on clarity, performance, and ease of maintenance.
Mobile apps
I design and develop React Native applications, focusing on usability, reliable performance, and preparing each app for release.
Backend
I build backend services, APIs, and business logic with tools such as NestJS. I design services that are clear, maintainable, and straightforward to extend.
Databases
I design and work with relational and non-relational databases, including PostgreSQL and MongoDB, choosing data structures that fit the application’s needs.
Testing & Deployment
I test applications, verify their behavior, and prepare deployments, including mobile releases on Google Play and the App Store. I use Git for version control and GitHub for collaboration.
AI
I use AI-driven development with Claude Code, OpenCode, and Codex. I review suggested solutions and take responsibility for architecture, code quality, and consistency.
// Hobby
Interests
Explore my interests and how I spend my time outside work.
@ let's work together. let's create remarkable things together
# build something worth remembering. from a clear idea to a polished digital product