Heorhii Trachuk · Python Backend Developer

01Profile

Junior Python Backend Developer with practical experience in Python, FastAPI, REST API development, and relational databases.
Skilled in building backend functionality, implementing CRUD operations and authentication, designing database schemas, and integrating APIs.
Experienced in freelance development and independent projects, with a background in C# game development, object-oriented programming, debugging, and collaborative software development.

02Skills

Programming Languages

PythonSQLC#C

Backend Development

FastAPIREST APIsCRUD operationsORMAsynchronous programming basics

Databases

PostgreSQLSQLiteDatabase designRelationshipsIndexesMigrations

Authentication & Security

JWTOAuth2 basicsSession authenticationPassword hashingPermissionsCORS

API Development

OpenAPI/SwaggerRequest and response handlingSerializationValidationPaginationFilteringError handling

Testing

PytestunittestAPI testingTest casesFixturesMocking basics

DevOps & Tools

GitGitHubDockerDocker ComposeLinuxBash basicsVirtual environmentspipuvPoetry

Web & Integration

HTTP/HTTPSJSONThird-party API integrationWebhooksPostman

Software Engineering

OOPSOLID basicsDesign patterns basicsDebuggingLoggingCode refactoring

Documentation & Collaboration

API documentationGit workflowsPull requestsJira/TrelloAgile/Scrum

Additional skills

Other Languages

AssemblyC++JavaJavaScriptTypeScriptLuaRust

Systems & Low-level

Linux (daily use)Reverse engineeringSystem automation scriptsLanguage internals

Embedded & Electronics

MCU programmingArduinoESPCircuit designPCB design

Graphics & 3D

SDLOpenGLMonoGameRaylibProcessingp5.jsPhysics simulationsVisualizationsBlender3D modelingMesh optimization

03Work Experience

September 2023 – Present

Freelance Python Backend Development

Developed backend functionality for web applications using Python and FastAPI.
Built REST API endpoints, CRUD operations, authentication logic, and database models.
Worked with PostgreSQL, SQLite, ORM, database migrations, and API integrations.
Tested and debugged API functionality using Postman and development tools.
Communicated with clients, clarified requirements, and delivered backend tasks independently.

January 2023 – September 2023

C# Unity Developer

STELLARIUM.gaming

Contributed to the development of Famine Way, a Unity-based game project using C#.
Developed and maintained game logic, gameplay systems, and interactive features.
Applied object-oriented programming principles, debugging, code refactoring, and feature implementation.
Collaborated with team members to clarify tasks, estimate scope, and deliver functionality within development iterations.
Used Git-based workflows to manage code changes and support team collaboration.

04Courses

FastAPI – The Complete Course 2026Udemy
Fundamentals of Database EngineeringUdemy
The Complete SQL BootcampUdemy
T-SQL Execution Plans, Indexes, Transactions, In-Memory OLTPUdemy
Relational Database DesignUdemy

05About Me

Foundation

Programming has been my main interest for years. I started with Python, writing scripts for system automation and Linux utilities, then explored languages across the whole stack, from assembly, C and C++ to C#, Java, JavaScript, TypeScript, Lua and Rust.

Systems

Linux is my daily environment. I have studied reverse engineering and how programming languages work under the hood, which gives me a solid grasp of what code actually does beneath the abstractions.

Graphics & 3D

Graphics is my strongest area. I have built 2D and 3D projects with SDL, OpenGL and MonoGame, visualizations with Processing and p5.js, and later physics simulations, visualizations and games with Raylib. I also model and optimize 3D meshes in Blender.

Embedded

I have a technical education in electronics, and I combined it with programming by writing software for microcontrollers (Arduino, ESP), designing my own circuits and PCBs, and building complete hardware projects.

Direction

Firstly i moved into game development, but I preferred core programming over game design work. That led me to Python, a simple, accessible and versatile language that suits backend development well, which is now my main focus.

Current project

With a teammate, I built a web application that we use daily: an AI-powered calorie tracker that records weight, calories, carbohydrates, fats and protein, and shows what has been eaten and what is left for the day.