Nikola Džajević

Python Developer

Endava•  January 2023 - Present•  Serbia

· Contributed to the development of a robust data migration tool leveraging ETL methodologies, integrating S3 Bucket for efficient data storage and Snowflake for data processing tasks. · Designed and developed Python Test Automation accelerator framework for internal company use, aimed at streamlining testing processes and enhancing efficiency. · Conducted code review activities, providing constructive feedback and insights to fellow team members, contributing to code quality and best practices. · Developed a NEXO state machine within a PoS simulator application, facilitating the adoption of a new protocol for semi-integrated payment solutions. · Led end-to-end testing efforts, verifying the performance of both the PoS simulator and application on the PED terminal.

Software Engineer

DLS Special Systems•  March 2021 - December 2022•  Serbia

· Designed and developed an UI application dedicated to monitoring, managing, and controlling complex system, with a primary emphasis on enhancing user experience (UX). · Designed and implemented serial communication protocols (CANBUS, UART) to enable seamless intercommunication between a central computer and multiple embedded devices, including GPS and Meteo stations. · Developed real-time object tracking solutions, incorporating serial communication protocols for direct control of servo drivers. Implemented a dynamic data packet system to adjust motor speeds and rotational directions, ensuring precise and accurate tracking performance. · Utilized the YOLOv4 model to create and train neural networks on custom datasets for precise object detection and classification. Demonstrated exceptional performance, achieving an accuracy rate of 89% on a Linux embedded system-on-module (SoM) Nvidia Jetson Nano.