Данііл

Daniil Leheza
[open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | github.com/Tr1ggerbtw

Education
Igor Sikorsky Kyiv Polytechnic Institute Kyiv, Ukraine
Bachelor of Software Engineering August 2024 – Present

Projects
IoT Climate Control System | C, ESP-IDF, FreeRTOS, HTTP, cJSON Dec. 2025 – Jan. 2026
• Developed a full-stack IoT solution using ESP32 with ESP-IDF framework running FreeRTOS.

• Implemented multi-threaded firmware architecture using FreeRTOS Tasks and Event Groups for Wi-Fi

synchronization.
• Engineered a bidirectional REST API: embedded HTTP server for actuator control and HTTP client for sensor

telemetry.
• Integrated cJSON library for efficient data serialization and parsing between the microcontroller and backend.

• Designed a modular architecture separating sensor (DHT11) and actuator logic.

TCP/IP Remote Control System | C++, Winsock2 API, Network Programming April 2025
• Developed a client-server architecture using low-level Windows Sockets (Winsock2) for remote device control.

• Designed a custom application-layer protocol for command transmission and state synchronization.

• Implemented robust error handling for network connection lifecycle (bind, listen, accept protocols).

• Managed raw memory buffers for data transmission, ensuring efficient packet handling without external networking

libraries.

Architecture Design | UML, System Design, Software Architecture Oct. 2025 - Dec. 2025
• Developed a comprehensive component-based architecture for a simulation engine.

• Designed detailed Component, Sequence, and Activity diagrams to model core mechanics.

• Analyzed system requirements and created BPMN diagrams to visualize error handling loops and process flows.

Technical Skills
Languages: C, C++, Python, SQL (PostgreSQL), Bash
Embedded & Systems: ESP-IDF, FreeRTOS, Linux, GPIO, UART, I2C, PWM
Network & Protocols: TCP/IP, HTTP, REST, Winsock2, JSON, Sockets
Development Tools: Docker, Git, GitHub, CMake, Make, GCC, VirtualBox
Core Concepts: OOP, Data Structures & Algorithms, System Design, Memory Management, UML