Aqsa

Machine Learning & Data Science Engineer

Freelancer.com • Freelance

Sep 2022 - Present • 3 yrs 8 mos

Developed machine learning models for classification, regression, and clustering using Python (Scikit-learn, Pandas, NumPy) Built deep learning models (CNN, RNN, LSTM) using TensorFlow and PyTorch for computer vision and NLP tasks Performed data preprocessing, feature engineering, and exploratory data analysis (EDA) on real-world datasets Optimized models using hyperparameter tuning to improve accuracy and performance Created data visualizations and performance reports for model evaluation Delivered end-to-end AI solutions from data collection to model deployment

PCB Design & Embedded Systems Engineer

Upwork • Freelance

Sep 2021 - Present • 4 yrs 8 mos

Designed PCB schematics and layouts using EasyEDA, KiCad, and Altium for analog, digital, and mixed-signal circuits Performed PCB reverse engineering from images, Gerber files, and physical boards to recreate accurate schematics Developed multi-layer PCB designs with proper routing, grounding, and signal integrity optimization Generated fabrication-ready files including Gerber, drill files, and Bill of Materials (BOM) Built embedded systems using Arduino, ESP32, and Raspberry Pi for IoT and automation applications Conducted circuit simulation and validation using Proteus, LTspice, and Multisim

Robotics Engineer (Robotic Arm Design & Simulation)

Caterpillar • Part-time

Jun 2022 - Apr 2026 • 3 yrs 10 mos

Designed robotic arms (2DOF to 6DOF) using CAD tools such as SolidWorks and Fusion 360 Implemented forward and inverse kinematics for precise motion control and positioning Modeled robot dynamics using Lagrangian and Newton-Euler methods Simulated robotic systems using MATLAB/Simulink and ROS with Gazebo Developed trajectory planning and motion optimization algorithms Integrated Arduino-based control systems with servo and stepper motors Built pick-and-place automation simulations and validated system performance