Tom Kre Sal, Developer in Rosice, South Moravian Region, Czech Republic
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Tom Kre Sal

Verified Expert  in Engineering

Bio

Tom is a full-stack machine learning engineer with several years of experience in machine learning and software engineering, working on projects driven by smart algorithms and data. Tom gets a kick out of creating solutions to complex problems that positively impact the lives of others. Tom likes to keep abreast of cutting-edge technologies, which he then applies to production-ready systems—giving his clients an advantage over their competitors.

Portfolio

Smartesq
Python, Optical Character Recognition (OCR), Computer Vision...
Sanad Cash, Inc
Data Science, Python, Data Extraction, Machine Learning, Azure Machine Learning...
SteelCorr
Computer Vision, Optimization, AI Model Training, Python, Machine Learning...

Experience

  • Python - 12 years
  • Computer Vision - 10 years
  • Artificial Intelligence (AI) - 10 years
  • Machine Learning - 10 years
  • Docker - 6 years
  • Neural Networks - 5 years
  • Fast.ai - 4 years
  • PyTorch - 4 years

Availability

Part-time

Preferred Environment

Artificial Intelligence (AI), Computer Vision, Machine Learning, Back-end, Python, Linux, Cloud, Generative Pre-trained Transformers (GPT), Natural Language Processing (NLP), Data Science

The most amazing...

... thing is to imagine something that does not exist and then try to build it.

Work Experience

Python Developer (via Toptal)

2024 - PRESENT
Smartesq
  • Developed a full-stack application enabling users to engage in conversational interactions with multiple documents. This application utilized a novel retrieval-augmented generation (RAG) pipeline, integrating LangChain and LlamaIndex.
  • Implemented a state-of-the-art RAG pipeline incorporating both a traditional PostgreSQL database and a vector database, Chroma DB. This approach optimized data management and retrieval efficiency, enhancing the overall performance of the application.
  • Built a scalable back end using FastAPI in Python, ensuring efficient API communication and data processing for the application. This back end provided the necessary infrastructure to handle user requests and manage the application's functionalities.
  • Developed a user-friendly and visually appealing front end based on a Figma design using Svelte. This front end ensured an intuitive and engaging user experience, facilitating easy interaction with the application's features.
Technologies: Python, Optical Character Recognition (OCR), Computer Vision, Document Databases, Document Parsing, OpenAI, Anthropic, Retrieval-augmented Generation (RAG), ChatGPT, Chatbots, AI Chatbots, Gemini, Gemini API, Software as a Service (SaaS), Prompt Engineering, Docker, FastAPI, Machine Learning Operations (MLOps), LangChain, Full-stack Development, CSS, Figma, Node.js, Front-end, Svelte, SvelteKit

Data Scientist/Data Engineer | Receipts Data Extraction Application

2022 - PRESENT
Sanad Cash, Inc
  • Designed and implemented a machine learning system that recognizes and extracts meaningful information from accounting documents using deep learning algorithms.
  • Designed and implemented highly scalable, reliable, and distributed back-end services using Python, FastAPI, Celery, Redis, and MongoDB to process incoming data in real-time.
  • Implemented the detection and classification of important objects on input documents, like QR codes, tables, headings, company logos, signatures, and many more.
Technologies: Data Science, Python, Data Extraction, Machine Learning, Azure Machine Learning, Amazon Machine Learning, Google Cloud Machine Learning, Data Engineering, Architecture, Google AI Platform, Azure Cosmos DB, Azure Cognitive Services, Vertex, Vertex AI, SpaCy, Hugging Face, DVC, Data Versioning, MLEM, Google Vision API, Handwriting Recognition, AWS Lambda, Amazon S3 (AWS S3), Amazon Textract, ChatGPT, Artificial Intelligence (AI), Automation, IT Automation

Computer Vision and Machine Learning Engineer

2024 - 2024
SteelCorr
  • Improved customer experience by doubling the accuracy of the existing AI corrosion detection model and optimizing its efficiency, enabling faster image processing and analysis.
  • Implemented Label Studio for efficient annotation management, streamlining the data labeling process.
  • Deployed MLflow for experiment tracking and established a semi-automatic training pipeline, enhancing model development efficiency.
Technologies: Computer Vision, Optimization, AI Model Training, Python, Machine Learning, Object Detection, Anomaly Detection

AI Engineer

2023 - 2023
PRIVE PLLC
  • Developed an end-to-end OCR and NLP pipeline, enabling seamless extraction of information from diverse ultrasound tech reports, including handwritten ones, resulting in a comprehensive and structured text output.
  • Implemented a robust computer vision system that successfully recognized and interpreted intricate details within the reports, ensuring a high level of accuracy in processing medical data.
  • Orchestrated the creation of a user-friendly web and mobile application interface, integrating AI algorithms seamlessly and facilitating efficient interaction for healthcare professionals while presenting detailed and actionable results.
Technologies: Natural Language Processing (NLP), Computer Vision, Optical Character Recognition (OCR), Generative Pre-trained Transformers (GPT), Handwriting Recognition, Artificial Intelligence (AI), Google Vision API, Healthcare, TensorFlow, Python, Algorithms, OpenAI, Flutter, FastAPI, Android, iOS, Apple, Android SDK, Mobile App Development, Automation, IT Automation

AI Lead Engineer

2023 - 2023
Omand
  • Developed advanced NLP algorithms, enhancing the coaching app's language understanding capabilities. This resulted in a nuanced and empathetic AI assistant capable of providing tailored guidance for a wide range of mental health challenges.
  • Spearheaded the design and development of a web and mobile application that serves as a dedicated AI mental coach, fostering a user-friendly environment for individuals seeking support with their day-to-day struggles.
  • Prioritized user feedback, ensuring a personalized, empathetic AI coaching experience. Iteratively enhanced features to meet diverse mental health needs.
Technologies: Artificial Intelligence (AI), Natural Language Processing (NLP), Generative Pre-trained Transformers (GPT), OpenAI, Large Language Models (LLMs), Gradio, Web UI, Flutter, Android, Android SDK, iOS, Apple, Mobile App Development

Computer Vision Developer

2021 - 2022
StructionSite, Inc.
  • Architected and built a pipeline to intelligently extract 3D-scene data from sequences of panoramic images, using a mix of geometric and deep learning approaches.
  • Created custom neural network architectures for object detection, semantic, and instance segmentation designed to detect different construction-specific objects and their changes over time.
  • Implemented the detection and anonymization of human faces and bodies on input video feeds for privacy reasons.
  • Reconstructed the visual SLAM algorithm's walking trajectory from the input video feed to properly align the projected path on the floor plan, including important features (like walls, rooms, doors, windows, etc.) on building drawings.
  • Managed the complete lifecycle of ML experiments (labels management, experiments tracking, evaluation, and deployments) with third-party tools like Google Vertex AI, Weights & Biases, Amazon SageMaker, or Metaflow (an open source project).
Technologies: Computer Vision, Computer Vision Algorithms, Python, C++, Machine Vision, Deep Learning, Machine Learning, Artificial Intelligence (AI), Machine Learning Operations (MLOps), Architecture, Hardware, Google AI Platform, Real-time Data, Vertex, Vertex AI, Metaflow, Data Versioning, Google Vision API, AWS Lambda, Amazon S3 (AWS S3), Amazon Textract, Amazon SageMaker

Lead Full-stack Machine Learning Engineer

2020 - 2021
Freelance
  • Developed a solution to extract meaningful information from invoices based on computer vision, natural language processing, and machine learning in general.
  • Trained a conditional random field model on named entity recognition to classify important invoice fields.
  • Created a solution to extract text from invoice images with a custom optical character recognition system based on deep learning.
  • Designed the solution to be a highly scalable, robust system with many microservices running on top of a Kubernetes cluster.
  • Created a mobile application that can analyze positioning, pricing, and out-of-stock goods, relying only on the photo of the product, and works with all types of packaging and product placement called Shelf Inspector.
Technologies: Agile, Azure, Artificial Intelligence (AI), Back-end, RabbitMQ, Kubernetes, Azure Kubernetes Service (AKS), Helm, Continuous Delivery (CD), Continuous Integration (CI), Machine Learning Operations (MLOps), PyTorch, Python, REST, GraphQL, Flask, Sanic Web Server, Fast.ai, PyTorch Lightning, Convolutional Neural Networks (CNNs), Deep Learning, Generative Pre-trained Transformers (GPT), Natural Language Processing (NLP), Named-entity Recognition (NER), Optical Character Recognition (OCR), Git, MySQL, TensorBoard, Data Science, Data Visualization, Image Recognition, Microservices, Containers, Containerization, CI/CD Pipelines, GitLab CI/CD, GitHub, Data Modeling, Databases, Database Modeling, Predictive Modeling, Predictive Analytics, Data Pipelines, ETL, APIs, Test-driven Development (TDD), Performance Tuning, Performance Testing, Data Engineering, SQLAlchemy, Databricks, Svelte, Full-stack, DevOps, Pytest, SQL, Linux, Docker, Docker Compose, Jupyter Notebook, Bootstrap, Scrum, Kanban, Leadership, Cloud, React, JavaScript, Prometheus, Web Security, Web App Security, NGINX, Computer Vision Algorithms, XGBoost, Amazon Web Services (AWS), Data Analysis, Data Analytics, Machine Vision, PySpark, Spark ML, AI Design, Neptune, MLflow, Weights & Biases, Build Pipelines, Continuous Development (CD), GitHub Actions, Object Detection, Image Processing, Tesseract, Pytesseract, Image Analysis, Image Annotation, Data Extraction, Azure Machine Learning, ML Pipelines, Google Cloud, Object Tracking, Deep Neural Networks (DNNs), Open Neural Network Exchange (ONNX), Metabase, Metaflow, Google Cloud Machine Learning, DocTR, Web Development, Natural Language Toolkit (NLTK), REST APIs, Google Cloud Platform (GCP), Keras, Python 3, Architecture, Azure Cognitive Services, Hugging Face, Data Versioning, Google Vision API, Handwriting Recognition, AWS Lambda, Amazon S3 (AWS S3), Amazon Textract, Amazon SageMaker, IT Automation

Senior Full-stack Machine Learning Engineer | CTO

2020 - 2021
Expansion of Eternity AG
  • Developed an end-to-end solution to simulate a treatment's facial aesthetical impact.
  • Trained Mask R-CNN models to detect possible treatment areas and advise on areas where doctors should focus.
  • Developed a complete back-end solution consisting of REST API for a front-end application and a payment gateway, using a PostgreSQL database for storage.
  • Implemented a precise detection of the face on the taken image and accurate detection of facial features like nose, eyes, mouth, etc.
  • Detected the location of points on the face with very high accuracy for the injection of a substance for aesthetical treatment.
Technologies: PyTorch, Agile, Azure, Python, TensorFlow, Computer Vision, Scikit-learn, Scikit-image, NumPy, GPU Computing, Expo, Back-end, Machine Learning, Machine Learning Operations (MLOps), Artificial Intelligence (AI), Generative Adversarial Networks (GANs), Convolutional Neural Networks (CNNs), Neural Networks, Docker, FastAPI, Fast.ai, Git, MySQL, TensorBoard, Data Science, Data Visualization, Image Recognition, Facial Recognition, Facial Tracking, Microservices, Containers, Containerization, CI/CD Pipelines, GitHub, Data Modeling, Databases, Database Modeling, Predictive Modeling, Predictive Analytics, Data Pipelines, ETL, APIs, Test-driven Development (TDD), Performance Tuning, Performance Testing, Data Engineering, SQLAlchemy, Databricks, Svelte, Full-stack, Node.js, DevOps, IceVision, Pytest, SQL, Linux, Docker Compose, Jupyter Notebook, Bootstrap, Scrum, Kanban, Leadership, Cloud, React, JavaScript, Web Security, Web App Security, NGINX, Computer Vision Algorithms, Deep Learning, Amazon Web Services (AWS), Data Analysis, Data Analytics, Machine Vision, AI Design, Neptune, MLflow, Weights & Biases, Build Pipelines, Continuous Development (CD), GitHub Actions, Object Detection, Image Processing, Image Analysis, Biometrics, Health, Image Annotation, Data Extraction, Azure Machine Learning, ML Pipelines, Object Tracking, Deep Neural Networks (DNNs), Open Neural Network Exchange (ONNX), Metaflow, Google Cloud Machine Learning, Web Development, Natural Language Toolkit (NLTK), REST APIs, Google Cloud Platform (GCP), Google Cloud, Keras, Python 3, Architecture, Google AI Platform, Real-time Data, Azure Cosmos DB, Azure Cognitive Services, Data Versioning, Google Vision API, AWS Lambda, Amazon S3 (AWS S3), Amazon Textract, Amazon SageMaker

Senior Full-stack Machine Learning Engineer | Co-founder

2017 - 2020
Industrial Vision
  • Developed computer vision algorithms to detect defectively manufactured parts with high accuracy. It requires precise object detection and recognition algorithms that distinguish the most minor object characteristics.
  • Implemented the notification of safety hazards. An area with robots requires specific safety rules: wearing a hard hat, glasses, and sometimes gloves. Implemented a solution to check all safety rules are followed from the feeds of security cameras.
  • Created algorithms to navigate industrial robots using the robot operating system from a video feed. Detected obstacles and other objects to avoid robots crashing.
  • Designed the whole product architecture from scratch as CTO of the company.
Technologies: Robot Operating System (ROS), Computer Vision, GPU Computing, Robotics, Amazon Web Services (AWS), Artificial Intelligence (AI), Docker, Python, PyTorch, TensorFlow, Computer Vision Algorithms, Machine Learning, RabbitMQ, Docker Swarm, Docker Compose, Linux, MongoDB, PostgreSQL, Scikit-learn, Scikit-image, NumPy, Pandas, Grafana, Ansible, Git, MySQL, TensorBoard, Data Science, Data Visualization, Image Recognition, Facial Recognition, Facial Tracking, Microservices, Containers, Containerization, CI/CD Pipelines, GitLab CI/CD, GitHub, Data Modeling, Databases, Database Modeling, Predictive Modeling, Predictive Analytics, Data Pipelines, ETL, APIs, Test-driven Development (TDD), Performance Tuning, Performance Testing, Data Engineering, SQLAlchemy, Full-stack, Node.js, DevOps, Pytest, SQL, Jupyter Notebook, Bootstrap, Scrum, Kanban, Leadership, Cloud, React, JavaScript, Prometheus, GraphQL, Redis, Web Security, Web App Security, NGINX, Memcached, Convolutional Neural Networks (CNNs), Deep Learning, Data Analysis, Data Analytics, Machine Vision, AI Design, MLflow, Build Pipelines, Continuous Development (CD), Object Detection, Image Processing, Image Analysis, Image Annotation, Amazon Machine Learning, ML Pipelines, Object Tracking, Deep Neural Networks (DNNs), Web Development, Natural Language Toolkit (NLTK), REST APIs, Keras, Python 3, Architecture, Hardware, CCTV, Real-time Data, Data Versioning, AWS Lambda, Amazon S3 (AWS S3), Automation, IT Automation

Head of Development, Search Engine

2014 - 2017
Seznam.cz
  • Redesigned the architecture and generated technical solutions for our full-text core technology, which enabled the widespread adoption of our solution across the whole company in multiple projects.
  • Spearheaded a modernization of the development process by establishing the brand-new roles of DevOps and SRE, which resulted in a faster process of releasing the changes into production.
  • Delivered new functionalities such as an image search engine which was astoundingly successful in the highly competitive market of search engines in Central Europe.
Technologies: Leadership, Management, Agile, Scrum, IT Project Management, IT Product Management, Artificial Intelligence (AI), Big Data, Software Architecture, Git, MySQL, Containers, Containerization, CI/CD Pipelines, GitLab CI/CD, GitHub, Data Modeling, Databases, Database Modeling, Predictive Analytics, Data Pipelines, ETL, APIs, Test-driven Development (TDD), Performance Tuning, Performance Testing, Apache Kafka, Data Engineering, Full-stack, DevOps, SQL, Linux, Python, Docker, Jupyter Notebook, Bootstrap, Kanban, Cloud, Web Security, Web App Security, NGINX, Amazon Web Services (AWS), PySpark, AI Design, Build Pipelines, Continuous Development (CD), Object Detection, Image Processing, Image Analysis, Image Annotation, Deep Neural Networks (DNNs), Web Development, REST APIs, Python 3, Architecture, Real-time Data, AWS Lambda, Amazon S3 (AWS S3)

Senior Back-end Developer

2011 - 2015
Seznam.cz
  • Developed an internal system for objective quality measurement of the full-text search system. It allowed product managers to focus on important features with the most benefit for the end-users.
  • Scaled the core of the full-text engine to processing a triple amount of data.
  • Redesigned the architecture of the system for taking screenshots of internet pages on a scale of thousands of pages per second.
Technologies: Python, Continuous Delivery (CD), Continuous Integration (CI), Grafana, Prometheus, Docker, Kubernetes, PostgreSQL, MongoDB, Flask, JavaScript, Back-end, React, Spark, Hadoop, Big Data, Software Architecture, Bootstrap, Elasticsearch, Redis, Memcached, Git, MySQL, Microservices, Containers, Containerization, CI/CD Pipelines, GitLab CI/CD, GitHub, Data Modeling, Databases, Database Modeling, Data Pipelines, ETL, APIs, Test-driven Development (TDD), Performance Tuning, Performance Testing, Apache Kafka, Data Engineering, SQLAlchemy, Full-stack, Node.js, Pytest, SQL, Linux, Jupyter Notebook, C++, Scrum, Kanban, GraphQL, Web Security, Web App Security, NGINX, Build Pipelines, Image Annotation, Web Development, REST APIs, Python 3

Experience

Visiobelle

http://www.visiobelle.com
A computer vision-based mobile application that helps doctors and their patients view the final results of a planned medical procedure.

In a small team of three members, I was the lead machine learning engineer and back-end developer in the build of this app. Due to the nature of the application, we paid particular focus on generating trustful results while maintaining high-security standards.

Seznam.cz Full-text Search Engine

https://search.seznam.cz/
A Czech-based full-text search engine by Seznam.cz that answers user questions with information ingeniously found on the internet and presented inventively.

I started this project at the beginning of my career, and I participated in developing this search engine as a back-end developer within a large team. A few years later, I became head of the development of the whole full-text platform. This was when I became increasingly passionate about algorithms driven by data and machine learning, and after that, I decided to start my own business.

Robotic System Air Hockey Game

Industrial Vision was a project focused on advanced automation and robotics in the automotive industry and the main purpose of the system was to detect defectively manufactured parts.

I was a lead machine learning engineer, and I was responsible for creating the algorithms from the proof of concept to production-ready systems.

To demonstrate our ability, we created a robotic system that can play an air hockey game against a human player. The game was publicly announced in a trade fair called Amper in 2019. You can still see the video at the link below.

• https://fb.watch/6kAEW9qBGv/

It was a real-time computer vision system with multiple object detection while. being able to control and navigate with the robotic 6-axis arm.

Extracting Information from Invoices

A system for extracting meaningful information from invoices that's based on machine learning, computer vision, and natural language processing.

I worked on this project as the lead machine learning engineer and responsible for designing solutions from scratch to production.

The solution is divided into three major stages. In the first stage, we standardized the format of incoming invoices. It includes some computer vision tasks and classification models based on convolution neural networks. In the next stage, we implemented optical character recognition for extracting raw text from invoices. The last step consists of named entity recognition and some post-processing for the final classification of important information on the invoice.

We also used production algorithms in highly scalable microservices running in a Kubernetes cluster that communicated over a RabbitMQ message broker.

Shelf Inspector

Shelf Inspector is a mobile app and a powerful tool for merchandisers, sales reps, and managers. It analyzes positioning, out-of-stock merchandise, pricing, and more—from a simple photo of a shelf in the store, and it works with all kinds of packaging and placement. The project comprises precise and robust object detection and location in different shapes and lighting conditions.

Education

2008 - 2011

Bachelor's Degree in Information Technology

Brno University of Technology Faculty of Information Technology - Brno, Czech Republic

Skills

Libraries/APIs

Fast.ai, PyTorch Lightning, REST APIs, Keras, PyTorch, TensorFlow, Scikit-learn, OpenCV, SQLAlchemy, React, Pandas, NumPy, Node.js, Flask-RESTful, XGBoost, PySpark, Spark ML, Natural Language Toolkit (NLTK), Azure Cognitive Services, SpaCy, Google Vision API, Gradio

Tools

Docker Compose, Git, RabbitMQ, NGINX, GitHub, Amazon Textract, Scikit-image, Grafana, Pytest, Helm, Ansible, Docker Swarm, Expo, TensorBoard, Azure Kubernetes Service (AKS), Named-entity Recognition (NER), GitLab CI/CD, Open Neural Network Exchange (ONNX), Azure Machine Learning, Google AI Platform, ChatGPT, Amazon SageMaker, Figma

Languages

Python, Python 3, SQL, JavaScript, GraphQL, C++, CSS

Frameworks

Flask, Bootstrap, Spark, Svelte, Hadoop, Metaflow, Flutter, Android SDK

Paradigms

REST, Continuous Integration (CI), Test-driven Development (TDD), Continuous Development (CD), Agile, Scrum, Kanban, Microservices, DevOps, Continuous Delivery (CD), Management, ETL, Automation, Anomaly Detection, Automation Engineering

Platforms

Linux, Docker, Jupyter Notebook, Azure, AWS Lambda, Kubernetes, Databricks, Amazon Web Services (AWS), Weights & Biases, Google Cloud Platform (GCP), Vertex AI, Apache Kafka, Android, iOS, Apple

Storage

Amazon S3 (AWS S3), PostgreSQL, MongoDB, MySQL, Redis, Elasticsearch, Memcached, Databases, Database Modeling, Data Pipelines, Google Cloud, Azure Cosmos DB, Document Databases

Industry Expertise

Healthcare

Other

Artificial Intelligence (AI), Computer Vision, Neural Networks, Machine Learning, Data Science, Data Engineering, Cloud, Full-stack, Machine Learning Operations (MLOps), IceVision, Software Architecture, Back-end, FastAPI, Optical Character Recognition (OCR), Computer Vision Algorithms, Convolutional Neural Networks (CNNs), Sanic Web Server, Deep Learning, Image Recognition, Facial Tracking, Containers, Containerization, CI/CD Pipelines, APIs, Machine Vision, AI Design, Build Pipelines, GitHub Actions, Object Detection, Image Processing, Tesseract, Pytesseract, Deep Neural Networks (DNNs), Image Analysis, Image Annotation, Data Extraction, Architecture, Real-time Data, Leadership, Big Data, Prometheus, Generative Adversarial Networks (GANs), Natural Language Processing (NLP), Web Security, IT Project Management, IT Product Management, Web App Security, Data Visualization, Facial Recognition, Data Modeling, Predictive Modeling, Predictive Analytics, Performance Tuning, Performance Testing, Data Analysis, Data Analytics, Algorithms, Neptune, MLflow, Metabase, Biometrics, Health, Amazon Machine Learning, Google Cloud Machine Learning, ML Pipelines, Object Tracking, DocTR, Web Development, Hardware, CCTV, Generative Pre-trained Transformer 3 (GPT-3), Vertex, Hugging Face, Generative Pre-trained Transformers (GPT), DVC, Data Versioning, MLEM, Handwriting Recognition, IT Automation, Robot Operating System (ROS), GPU Computing, Robotics, ABB Robots, OpenAI, Large Language Models (LLMs), Web UI, Mobile App Development, Optimization, AI Model Training, Document Parsing, Anthropic, Retrieval-augmented Generation (RAG), Chatbots, AI Chatbots, Gemini, Gemini API, Software as a Service (SaaS), Prompt Engineering, LangChain, Full-stack Development, Front-end, SvelteKit

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