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Alexandra S.

Alexandra S.

Machine & Deep Learning, AI and Data Science in Python

I am a ML engineer with a Master’s degree in Applied Mathematics, a strong technical background and extensive experience in deep learning, computer vision, and medical imaging. I have experience developing ML pipelines in Python using PyTorch and TensorFlow, previously working with high-dimensional image data and protein sequences. As part of my Master’s thesis, I developed a deep learning pipeline for breast cancer diagnostics using histopathology images, training models to predict molecular disease status directly from image data. I have also contributed to research on brain tumour segmentation using 3D MRI scans through an external collaborative project, which focused on fine-tuning segmentation models on low-quality data. My team’s work on 3D brain tumour segmentation was presented at MICCAI 2023 and published in the Lecture Notes in Computer Science series. I also have exposure to NLP and working with transformers and large language models. My work in NLP includes developing a pipeline in PyTorch for training and fine-tuning large protein language models from HuggingFace. I am passionate about applying machine learning to real-world problems and delivering clean, well-documented, reliable, and impactful solutions.

🇿🇦Cape Town, South Africa$22/hr100% JSS5.00 (1)Since Jun 2025

Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#218,617 / 412k
🇿🇦Country#1,239 / 2,548
Revenue, last 30 days
$0
Total earnings
$7.7k

Billed in all: $8.2k

World#218,617 / 412k
🇿🇦Country#1,239 / 2,548
Per project
$3.8k
Projects, last 6 months
0
World#209,850 / 412k
🇿🇦Country#1,254 / 2,548
Projects in all
2
0% fixed100% hourly
World#328,886 / 412k
🇿🇦Country#1,936 / 2,548

Earnings, last 30 days

$8.2kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$8.0k$8.1k$8.2k$8.3kOct 8Oct 23Nov 7

Skills