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Olha K., Python Engineer, Data Quality, ML

Radomsko, Poland
Last Updated: 4 Jul 2023
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- 13 years of experience in IT - Proficiency in Python, Pandas. - Data quality for ICC profiles and algorithms for display color calibration - Mathematical modeling (MATLAB, Octave, Comsol, MathCad), software algorithms, numerical methods (algebra, interpolation, regression, nonlinear problems, optimization, ordinary and partial differential equations), machine learning. - Upper-Intermediate English. - Available in two weeks

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Vladyslav S., Senior Data Scientist

Kyiv, Ukraine
Last Updated: 6 Oct 2023

- Senior Data Scientist with deep expertise in Machine Learning and Computer Vision - Proficient in Python, C++, and various data science libraries such as NumPy, Pandas, and scikit-learn. - Holds a Doctor of Philosophy degree in Computer Software Engineering from Kyiv Polytechnic University.

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Poland
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Software Engineer with a Computer Science and Software Engineering background and 5 years of experience specializing in data analysis, visualization, and backend systems across retail, mobile, and finance domains. Proven expertise in languages such as Python, SQL, and R, supported by strong knowledge of cloud services like AWS and GCP. Skilled in BI tools and data visualization with Tableau, Looker Studio, and programming libraries Matplotlib, Seaborn, and Folium. Experienced in database management with MySQL, PostgreSQL, and NoSQL databases like Redis and MongoDB. Proficient in Data Engineering practices using Apache Spark and ETL/ELT processes with Apache Airflow. Demonstrates advanced capabilities in Machine Learning and Data Science with extensive use of Pandas, NumPy, and Scikit-learn. Committed to DevOps with experience in Docker, Bash Scripting, and version control systems like Git.

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Roman V., Senior Data Scientist

Ukraine
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- Software engineer with 6 years of experience in data science and computer vision. - Proficient in Python, C++, and various data science libraries such as NumPy, Pandas, and scikit-learn. - Experienced in developing real-time computer vision algorithms for iOS and Android devices. - Skilled in dataset gathering, neural network training, and model optimization using Inference Triton Server. - Developed and integrated a face reenactment algorithm for photo editing. - Familiar with DevOps and MLOps tools such as AWS, Docker, and Google Cloud. - Holds a Master's degree in Data Science and a Bachelor's degree in Computer Science from Ukrainian Catholic University.

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Table of Contents

Pros & cons of NumPy

9 Pros of NumPy

  • Efficient Computation: NumPy is designed to perform fast mathematical and logical operations on large arrays of data. It leverages highly optimized C code, making it significantly faster than traditional Python lists.
  • Multi-dimensional Array Support: NumPy provides powerful data structures called ndarrays, which allow efficient storage and manipulation of multidimensional arrays. This makes it easier to work with complex scientific and mathematical data.
  • Broadcasting: NumPy’s broadcasting feature enables arithmetic operations between arrays of different shapes and sizes, eliminating the need for explicit loops. This simplifies code and improves performance.
  • Vectorization: NumPy allows you to express operations on entire arrays rather than individual elements. This vectorized approach leads to concise and efficient code, reducing the need for loops and improving performance.
  • Integration with Other Libraries: NumPy seamlessly integrates with other popular scientific computing libraries, such as SciPy, Pandas, and Matplotlib. This ecosystem provides extensive functionality for data analysis, visualization, and numerical computing.
  • Memory Efficiency: NumPy’s ndarray objects are more memory-efficient compared to Python lists. They provide a compact representation of data, reducing memory consumption and improving performance.
  • Wide Range of Mathematical Functions: NumPy offers a vast collection of mathematical functions, including linear algebra, Fourier transforms, random number generation, and statistical operations. These functions are highly optimized and provide accurate results.
  • Indexing and Slicing: NumPy provides flexible indexing and slicing capabilities, allowing efficient extraction of subsets of data from arrays. This enables easy data manipulation and analysis.
  • Open Source and Community-driven: NumPy is an open-source project, which means that its source code is freely available for inspection, modification, and contribution. It has a large and active community of developers, ensuring continuous improvements and support.

9 Cons of NumPy

  • Steep Learning Curve: NumPy has a relatively steep learning curve, especially for beginners who are not familiar with array-based computing. Understanding concepts like broadcasting and vectorization may require some time and effort.
  • Limited Data Types: NumPy has a fixed set of data types, which may be limiting in certain scenarios. For example, it does not support variable-length strings or arbitrary precision arithmetic out of the box.
  • Verbose Syntax: NumPy’s syntax can be verbose compared to other libraries or frameworks. Expressing complex operations may require multiple lines of code, leading to less readable code.
  • Memory Management: NumPy requires manual memory management when working with large arrays. Improper memory handling can lead to memory leaks or inefficient memory usage.
  • Limited Support for Missing Data: NumPy does not have built-in support for missing data or NaN values. This can be a limitation when working with real-world datasets that often contain missing or incomplete data.
  • Limited Support for Heterogeneous Data: NumPy is primarily designed for homogeneous data, where all elements have the same data type. Working with arrays of mixed data types can be challenging in NumPy.
  • Limited Support for Parallel Computing: NumPy does not provide native support for parallel computing. While it is possible to parallelize certain operations using external libraries like Numba or Dask, it requires additional effort.
  • Limited Support for GPU Computing: NumPy predominantly runs on the CPU, limiting its ability to leverage the power of GPUs for accelerated computations. Specialized libraries like CuPy can be used to overcome this limitation.
  • Less Friendly Error Messages: NumPy error messages can sometimes be cryptic and less user-friendly, especially for beginners. Debugging code and understanding the root cause of errors may require additional effort.

TOP 10 NumPy Related Technologies

  • Python

    Python is the most popular programming language for NumPy software development. It is known for its simplicity, readability, and vast community support. Python provides a wide range of libraries and frameworks that make it easy to work with NumPy arrays and perform numerical computations efficiently.

  • NumPy

    NumPy is a fundamental library for numerical computing in Python. It provides powerful data structures, such as n-dimensional arrays, along with a collection of mathematical functions to manipulate these arrays efficiently. NumPy is widely used for scientific and mathematical computations in various domains.

  • Pandas

    Pandas is a data analysis library that builds on top of NumPy. It provides high-performance, easy-to-use data structures and data analysis tools for manipulating and analyzing structured data. Pandas offers functionalities like data cleaning, transformation, and aggregation, making it a valuable tool for NumPy software development.

  • Matplotlib

    Matplotlib is a popular data visualization library in Python. It integrates seamlessly with NumPy and provides a wide range of plotting options to create high-quality charts, graphs, and visualizations. Matplotlib is essential for visualizing numerical data and gaining insights from it.

  • SciPy

    SciPy is a scientific computing library that extends the capabilities of NumPy. It offers additional functionalities for optimization, integration, linear algebra, statistics, and more. SciPy complements NumPy by providing a comprehensive set of tools for scientific and technical computing.

  • Jupyter Notebook

    Jupyter Notebook is an interactive computing environment that allows you to create and share documents containing live code, equations, visualizations, and narrative text. It is widely used for prototyping, exploring data, and sharing computational workflows in the field of NumPy software development.

  • TensorFlow

    TensorFlow is an open-source machine learning framework that supports numerical computations on large-scale data using data flow graphs. It integrates well with NumPy and provides efficient tools for building and training machine learning models. TensorFlow is widely adopted in the field of deep learning and artificial intelligence.

Soft skills of a NumPy Developer

Soft skills of a NumPy Developer

Junior

  • Strong problem-solving skills: Ability to identify and analyze problems in order to come up with effective solutions.
  • Effective communication: Clear and concise communication skills to collaborate with team members and understand project requirements.
  • Attention to detail: Ability to pay close attention to details to ensure accuracy and precision in data manipulation and analysis.
  • Time management: Efficiently manage time and prioritize tasks to meet project deadlines.
  • Adaptability: Flexibility to adapt to changing project requirements and work in a fast-paced environment.

Middle

  • Leadership skills: Ability to take charge of a project, delegate tasks, and guide junior developers in the team.
  • Teamwork: Collaboration and cooperation with other team members to achieve project goals.
  • Mentoring: Willingness to mentor junior developers by providing guidance and sharing knowledge.
  • Critical thinking: Analytical and logical thinking to evaluate complex problems and make informed decisions.
  • Creativity: Thinking outside the box to come up with innovative solutions and approaches to data manipulation and analysis.
  • Conflict resolution: Ability to manage conflicts and resolve issues within the team effectively.
  • Continuous learning: Stay updated with the latest advancements in NumPy and related technologies through self-learning.

Senior

  • Project management: Experience in managing large-scale projects, including planning, execution, and delivery.
  • Client management: Ability to understand client requirements, communicate effectively, and provide satisfactory solutions.
  • Strategic thinking: Ability to think strategically and make decisions that align with the long-term goals of the organization.
  • Risk assessment: Identify potential risks and develop mitigation strategies to ensure project success.
  • Empathy: Understand and empathize with team members to create a positive and collaborative work environment.
  • Influence and persuasion: Ability to influence stakeholders and persuade them to adopt recommended solutions or approaches.
  • Conflict management: Expertise in managing conflicts and resolving issues within the team and with stakeholders.
  • Continual improvement: Drive continuous improvement by identifying areas of enhancement and implementing necessary changes.

Expert/Team Lead

  • Strategic leadership: Provide strategic guidance and direction to the team to achieve organizational objectives.
  • Decision-making: Make informed decisions based on extensive knowledge and experience in NumPy development.
  • Team management: Effectively manage and motivate a team of developers to achieve project goals.
  • Stakeholder management: Build and maintain strong relationships with stakeholders, including clients and senior management.
  • Innovation: Foster a culture of innovation within the team, encouraging creative problem-solving and exploring new technologies.
  • Conflict resolution: Expertise in resolving complex conflicts and facilitating effective communication among team members.
  • Technical expertise: In-depth knowledge and expertise in NumPy and related technologies to guide the team and provide technical solutions.
  • Strategic planning: Develop strategic plans and roadmaps for the team and align them with organizational objectives.
  • Resource management: Efficiently allocate resources and manage budgets to optimize project outcomes.
  • Continuous improvement: Foster a culture of continuous improvement by implementing best practices and promoting learning and growth within the team.
  • Collaboration: Foster collaboration within and across teams to leverage collective knowledge and expertise for better outcomes.

What are top NumPy instruments and tools?

  • NumPy: NumPy is a fundamental package for scientific computing in Python. It provides support for large, multi-dimensional arrays and matrices, along with a collection of mathematical functions to operate on these arrays. NumPy was first released in 2006 and has since become a widely used library in the scientific and data analysis communities.
  • SciPy: SciPy is an open-source library built on top of NumPy. It provides additional functionality for scientific and technical computing, including modules for optimization, integration, interpolation, signal and image processing, and more. SciPy was first released in 2001 and has been actively developed and maintained ever since.
  • Pandas: Pandas is a powerful data manipulation and analysis library that is built on top of NumPy. It provides easy-to-use data structures like DataFrame and Series, along with a variety of data manipulation functions. Pandas was first released in 2008 and has gained popularity for its ability to handle large datasets and perform complex data operations efficiently.
  • Matplotlib: Matplotlib is a plotting library for Python that integrates well with NumPy. It provides a wide range of visualization options, allowing users to create various types of plots, such as line plots, scatter plots, bar plots, histograms, and more. Matplotlib was first released in 2003 and has since become one of the most widely used plotting libraries in the Python ecosystem.
  • Scikit-learn: Scikit-learn is a machine learning library that utilizes NumPy arrays for input data handling. It provides a wide range of supervised and unsupervised learning algorithms, as well as tools for model selection, evaluation, and preprocessing. Scikit-learn was first released in 2007 and has gained popularity for its simplicity and ease of use in implementing machine learning pipelines.
  • OpenCV: OpenCV is a popular computer vision library that relies heavily on NumPy for efficient image processing and manipulation. It provides a wide range of functions for tasks such as image filtering, feature detection, object recognition, and more. OpenCV was first released in 2000 and has since become a standard library in the computer vision community.
  • Dask: Dask is a flexible parallel computing library that integrates well with NumPy. It allows users to perform out-of-core computations and parallelize their code across multiple cores or distributed clusters. Dask was first released in 2015 and has gained popularity for its ability to handle large datasets that do not fit into memory.
  • NumPyro: NumPyro is a probabilistic programming library built on top of NumPy and PyTorch. It provides a high-level interface for performing Bayesian inference and probabilistic modeling. NumPyro was first released in 2019 and has gained attention for its flexibility and integration with other popular deep learning libraries.
  • Xarray: Xarray is a library for working with labeled multi-dimensional arrays that extends the capabilities of NumPy. It enables users to manipulate and analyze multi-dimensional datasets with ease, supporting advanced indexing, broadcasting, and alignment operations. Xarray was first released in 2014 and has gained popularity in the geoscience and climate modeling communities.

TOP 14 Tech facts and history of creation and versions about NumPy Development

  • NumPy is a fundamental library for scientific computing in Python.
  • It was created in 2005 by Travis Olliphant, a prominent figure in the Python community.
  • NumPy stands for “Numerical Python” and provides efficient multidimensional array objects.
  • The library’s main data structure is the ndarray, which allows for fast and flexible operations on large arrays of homogeneous data.
  • NumPy’s array operations are significantly faster than equivalent operations in pure Python due to its efficient implementation in C.
  • NumPy is the foundation for many other scientific Python libraries, such as Pandas and SciPy.
  • NumPy’s core functionality includes mathematical functions, linear algebra operations, and random number generation.
  • NumPy also provides tools for reading and writing data to disk and integrating with other programming languages.
  • NumPy’s broadcasting feature allows for element-wise operations between arrays of different shapes.
  • NumPy has a rich set of indexing and slicing capabilities, making it easy to manipulate and extract data from arrays.
  • NumPy has a large and active community of developers and users, who contribute to its continuous improvement.
  • NumPy has undergone several major releases, with each version introducing new features and performance improvements.
  • NumPy 1.0 was released in 2006, and since then, it has become an essential tool for scientific computing and data analysis.
  • NumPy’s open-source nature allows for easy customization and extension, making it a versatile library for various domains.
  • NumPy’s efficient memory management and optimized algorithms make it suitable for handling large datasets and complex computations.

Cases when NumPy does not work

  1. When dealing with extremely large datasets: NumPy is a powerful library for numerical computations in Python, but it is primarily designed to work with data that can fit into memory. If you have datasets that are too large to fit into the available memory, NumPy may not be the best choice. In such cases, you might need to consider alternative solutions like distributed computing frameworks or streaming algorithms.
  2. When working with non-numeric data: NumPy is optimized for numerical computations and provides efficient storage and manipulation of arrays of numeric data. However, if you are dealing with non-numeric data, such as text or categorical variables, NumPy may not be the most suitable tool. Instead, you can consider using libraries like Pandas, which provide specialized data structures and functions for handling such data types.
  3. When performance is critical and operations are not vectorizable: NumPy excels at performing vectorized operations on arrays, which means that operations are applied element-wise without the need for explicit loops. However, there may be cases where your computations cannot be easily expressed as vectorized operations. In such situations, the performance benefits of NumPy may not be fully realized, and you might need to consider other approaches, such as using Cython or writing low-level code in a compiled language.
  4. When advanced mathematical functions are required: NumPy provides a comprehensive set of mathematical functions, but it may not cover all the specialized functions you might need. If you require advanced mathematical functions that are not available in NumPy, you can explore other libraries like SciPy, which builds on top of NumPy and provides additional functionality for scientific computing.
  5. When working with sparse data: NumPy arrays are designed to efficiently store dense multi-dimensional arrays. However, if you are dealing with sparse data structures where most of the elements are zero, NumPy may not be the most efficient choice. There are specialized libraries like SciPy’s sparse module that provide data structures and algorithms specifically designed for sparse matrices.

Hard skills of a NumPy Developer

NumPy is a fundamental library for scientific computing in Python, providing support for large, multi-dimensional arrays and matrices, along with a vast collection of mathematical functions to operate on these arrays efficiently. As a NumPy developer, it is essential to possess a set of hard skills that enable you to effectively work with this powerful library.

Junior

  • Array Manipulation: Understanding and applying NumPy’s array manipulation functions, such as reshaping, slicing, and indexing, to efficiently process and transform data.
  • Element-wise Operations: Proficiency in performing element-wise operations on NumPy arrays, including arithmetic operations, logical operations, and bitwise operations.
  • Array Broadcasting: Knowledge of how NumPy broadcasts arrays with different shapes to perform operations efficiently, avoiding unnecessary memory duplication.
  • Universal Functions: Familiarity with NumPy’s universal functions (ufuncs) that allow element-wise operations across arrays, such as mathematical functions, trigonometric functions, and statistical functions.
  • Array Creation and Initialization: Ability to create and initialize NumPy arrays using various techniques, including range-based initialization, random number generation, and reading data from external sources.

Middle

  • Linear Algebra Operations: Proficiency in performing linear algebra operations using NumPy, such as matrix multiplication, matrix factorization, eigenvalue computation, and solving linear systems.
  • Array Broadcasting and Advanced Indexing: Advanced knowledge of array broadcasting to efficiently perform operations on arrays with different shapes, along with expertise in advanced indexing techniques like Boolean indexing, fancy indexing, and integer array indexing.
  • Efficient Memory Management: Understanding how NumPy manages memory and implementing memory-efficient techniques like views, strides, and memory mapping to avoid unnecessary memory usage and optimize performance.
  • Performance Optimization: Experience in optimizing NumPy code for better performance by leveraging techniques like vectorization, parallelization, and utilizing appropriate data types and array layouts.
  • Integration with Other Libraries: Familiarity with integrating NumPy with other scientific computing libraries like SciPy, Pandas, and Matplotlib to leverage their functionality and create powerful data analysis and visualization workflows.
  • Error Handling and Debugging: Ability to handle and debug errors effectively in NumPy code, including understanding and resolving issues related to array shapes, data types, and indexing errors.
  • Testing and Documentation: Skills in writing unit tests and documenting NumPy code to ensure code reliability, maintainability, and to facilitate collaboration with other developers.

Senior

  • Advanced Array Operations: Mastery of advanced array operations in NumPy, including advanced masking and filtering techniques, advanced array set operations, and advanced array stacking and splitting methods.
  • Optimized Algorithm Design: Proficiency in designing and implementing optimized algorithms that leverage NumPy’s computational capabilities, considering factors like algorithmic complexity, memory usage, and performance trade-offs.
  • Parallel Computing: Knowledge of parallel computing techniques in NumPy, such as utilizing multi-core processors and distributed computing frameworks, to accelerate computations and handle larger datasets efficiently.
  • Memory Optimization and Profiling: Expertise in advanced memory optimization techniques, such as memory pooling, garbage collection strategies, and profiling tools, to identify and resolve memory-related issues and bottlenecks.
  • Code Review and Mentoring: Ability to review and provide constructive feedback on NumPy code written by other developers, along with mentoring junior team members to enhance their skills and knowledge in NumPy development.
  • Performance Tuning and Benchmarking: Experience in fine-tuning NumPy code for maximum performance, utilizing profiling and benchmarking tools to identify and address performance bottlenecks, and optimizing code execution across different hardware architectures.
  • Advanced Visualization: Proficiency in advanced data visualization techniques using libraries like Matplotlib and Seaborn, combined with NumPy’s array manipulation capabilities, to create insightful and visually appealing data visualizations.

Expert/Team Lead

  • Library Development: Experience in developing and contributing to the development of NumPy and related scientific computing libraries, by implementing new features, improving existing functionality, and addressing performance and compatibility issues.
  • Algorithm Design and Research: Expertise in designing and implementing complex algorithms and conducting research in scientific computing using NumPy, contributing to the advancement of computational science and data analysis.
  • Collaboration and Project Management: Proficiency in leading and managing teams of developers working on projects involving NumPy, coordinating project activities, and collaborating with other teams to ensure successful project delivery.
  • Community Engagement: Active involvement in the NumPy community, contributing to discussions, providing support to other developers, and actively participating in the development and improvement of the NumPy ecosystem.
  • Domain Knowledge: In-depth understanding of specific domains where NumPy is widely used, such as data science, machine learning, image processing, computational physics, and computational biology, enabling the application of NumPy in specialized contexts.
  • Research Paper Writing: Ability to write research papers and technical articles on topics related to NumPy and scientific computing, contributing to the dissemination of knowledge and advancing the field.
  • Conference Presentations and Workshops: Proficiency in delivering presentations and conducting workshops at conferences and events, sharing insights and expertise on NumPy development and its applications in scientific computing.
  • Contributing to Open Source: Actively contributing to the broader open-source community, not only in the NumPy ecosystem but also in related projects and libraries, by submitting bug fixes, feature requests, and improvements.
  • Continuous Learning: A commitment to continuous learning and staying up-to-date with the latest advancements in NumPy, scientific computing, and related technologies, by attending conferences, participating in online courses, and reading scientific papers.
  • Problem Solving and Innovation: Proven ability to solve complex problems using NumPy, think innovatively, and propose novel solutions that push the boundaries of scientific computing and data analysis.

How and where is NumPy used?

TOP 6 Interesting Utilization Cases of NumPy Development:

Case: Scientific ComputingCase Description:
Scientific computingNumPy is widely used in scientific computing due to its powerful array operations and mathematical functions. It provides efficient and convenient data structures for numerical calculations, allowing researchers and scientists to perform complex computations with ease. From data analysis to simulation modeling, NumPy simplifies the implementation of various scientific algorithms, making it an essential tool in fields such as physics, chemistry, biology, and astronomy.
Case: Data AnalysisCase Description:
Data analysisNumPy is extensively used in data analysis tasks. It enables efficient handling and manipulation of large datasets, providing essential tools for operations such as data filtering, sorting, and aggregation. With NumPy’s powerful array operations, statistical functions, and mathematical capabilities, analysts can easily perform various data analysis tasks, including descriptive statistics, hypothesis testing, and regression analysis.
Case: Image ProcessingCase Description:
Image processingNumPy is widely employed in image processing applications. Its ability to efficiently store and manipulate multidimensional arrays makes it an ideal choice for image representation and manipulation. NumPy’s array operations allow for seamless image transformations, filtering, and enhancement. From basic operations like resizing and cropping to advanced techniques like convolution and Fourier transforms, NumPy provides a robust foundation for image processing tasks.
Case: Machine LearningCase Description:
Machine learningNumPy plays a crucial role in machine learning workflows. Its array operations and mathematical functions are fundamental building blocks for implementing machine learning algorithms. NumPy arrays provide an efficient data structure for storing and manipulating training and testing data, while its mathematical functions enable various computations required during model training and evaluation. NumPy’s integration with popular machine learning libraries, such as scikit-learn and TensorFlow, further enhances its usability in this domain.
Case: Financial ModelingCase Description:
Financial modelingNumPy is widely used in the field of finance for building financial models and performing quantitative analysis. Its array operations and mathematical functions enable efficient calculations of financial metrics, such as portfolio returns, risk measures, and option pricing. NumPy’s broadcasting feature simplifies the handling of arrays with different shapes and sizes, making it easier to perform calculations across multiple financial instruments and time periods.
Case: Simulation ModelingCase Description:
Simulation modelingNumPy is extensively utilized in simulation modeling tasks. It provides efficient data structures for representing and manipulating simulation data, enabling the implementation of complex simulation models. NumPy’s array operations allow for efficient parallelization and vectorization of simulation computations, enhancing performance and scalability. Whether it’s simulating physical systems, economic models, or social networks, NumPy’s capabilities make it a popular choice for simulation modeling.

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