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Top 30 Machine Learning Skills for ML Engineer in 2024
Updated on 31 October, 2024
24.71K+ views
• 25 min read
Table of Contents
- Who Is a Machine Learning Engineer?
- Top Machine Learning Skills [Based on Roles]
- Technical Machine Learning Skills Required to Become ML Engineer
- Programming Machine Learning Skills to Become an ML Engineer
- Programming Languages for Machine Learning
- Soft Skills or Behavioral Skills Required to Become ML Engineer
- How to Improve Machine Learning Skills?
- Machine Learning Career Outlook
- Conclusion
Embarking on a journey in the highly demanded field of Machine Learning (ML) opens doors to diverse career opportunities. The avenues to acquire the essential skills for a career in ML are plentiful, ranging from Machine Learning online courses and certifications to formal degree programs. However, transitioning from being interested to working in the field requires more than just accumulating theoretical knowledge. Time and again, I come across college freshers and people looking to change their steams asking about machine learning skills in demand.
In this post, I've put together the essential information to guide you in cultivating not only the necessary machine learning skills but also the mindset crucial for a machine-learning engineer.
Who Is a Machine Learning Engineer?
I would define a Machine Learning Engineer as a technically proficient programmer who delves into the intricacies of self-running software and predictive models. These professionals, with their ML engineer skills, have expertise in research, building, and designing to develop AI systems that harness expansive datasets. Machine learning engineers work with data science teams on a diverse range of tasks. Their Data Science training comes in handy in roles that extend from fundamental research and development and designing AI for machine learning to the ongoing maintenance of AI systems.
Beyond their machine learning skills, effective communication is at the core of what they do. Serving as a crucial intermediary, they facilitate collaboration between data scientists shaping models and the technical professionals implementing and managing the models. Their responsibilities include implementing machine learning algorithms, conducting experiments and tests on AI systems, and designing and developing machine learning systems, along with a range of different tasks.
Top Machine Learning Skills [Based on Roles]
Organizations are showing massive interest in using machine learning in their products, which would in turn bring plenty of opportunities for machine learning enthusiasts.
When you ask machine learning engineers the question – “What do you do as a machine learning engineer?”, chances are high that individual answers would differ from one professional to another. This may sound a little puzzling, but yes, this is true!
Hence, a beginner to machine learning needs to have a clear understanding that there are different roles that they can perform with machine learning skills. And accordingly, the skill set that they should possess, would differ. This section will give clarity on machine learning skills that are needed to perform various machine learning roles.
Broadly, three main roles come into the picture when you talk about machine learning skills:
- Data Engineer
- Machine Learning Engineer
- Machine Learning Scientist
One must understand that data science, machine learning and artificial intelligence are interlinked. The following quote explains this better:
A machine learning engineer is someone who deals with huge volumes of data to train a machine and impart it with the knowledge that it uses to perform a specified task. However, in practice, there may be a little more to add to this:
Machine Learning Role | Skills Required | Roles and Responsibilities |
---|---|---|
Data Engineer |
|
|
Machine Learning Engineer |
|
|
Machine Learning Scientist | Expert knowledge in:
|
|
Thus, gaining machine learning skills should be a task associated with clarity on the job role and of course the passion to learn them. As it is widely known, becoming a machine learning engineer is not a straightforward task like becoming a web developer or a tester.
Irrespective of the role, a learner is expected to have solid knowledge on data science. Besides, many other subjects are intricately intertwined in learning machine learning and for a learner, it requires a lot of patience and zeal to learn skills and build them up as they move ahead in their career.
In the coming sections, we would be discussing each of these skills in detail and how proficient you are expected to be in them.
Technical Machine Learning Skills Required to Become ML Engineer
Becoming a machine learning engineer means preparing oneself to handle interesting and challenging tasks that would change the way humanity is experiencing things right now. It demands both technical and non-technical expertise. Firstly, let’s talk about the technical skills needed for a machine learning engineer. Here is a list of technical skills a machine learning engineer is expected to possess:
- Applied Mathematics
- Neural Network Architectures
- Physics
- Data Modeling and Evaluation
- Advanced Signal Processing Techniques
- Natural Language Processing
- Audio and video Processing
- Reinforcement Learning
Learning machine learning skills is getting costlier day by day yet Data Science course fee has been providing the highest ROI (Return on Investment) for its learners. We recommend learners investigate the course curriculum before enrolling. Make sure the curriculum includes the skills we are going to delve deeper into below -
1. Applied Mathematics
Mathematics plays an important role in machine learning, and hence it is the first one on the list. If you wish to see yourself as a proven machine learning engineer, you ought to love math and be an expert in the following specializations of math.
- But first, let us understand why a machine learning engineer would need math at all? There are many scenarios where a machine learning engineer should depend on math. For example:
- Choosing the right algorithm that suits the final needs
- Understanding and working with parameters and their settings.
- Deciding on validation strategies
- Approximating the confidence intervals.
How much proficiency in Math does a machine learning engineer need to have?
It depends on the level at which a machine learning engineer works. The following diagram gives an idea about how important various concepts of math are for a machine learning enthusiast.
- Linear algebra: 15%
- Probability Theory and Statistics: 25%
- Multivariate Calculus: 15%
- Algorithms and Optimization: 15%
- Other concepts: 10%
A. Linear Algebra
This concept plays a main role in machine learning. One has to be skilled in the following sub-topics of linear algebra:
- Principal Component Analysis (PCA), Singular Value Decomposition (SVD)
- Eigen decomposition of a matrix
- LU Decomposition
- QR Decomposition/Factorization
- Symmetric Matrices
- Orthogonalization & Orthonormalization
- Matrix Operations
- Projections
- Eigenvalues & Eigenvectors
- Vector Spaces and Norms
B. Probability Theory and Statistics
The core aim of machine learning is to reduce the probability of error in the final output and decision making of the machine. Thus, it is no wonder that probability and statistics play a major role.
The following topics are important in these subjects:
- Combinatorics
- Probability Rules & Axioms
- Bayes’ Theorem
- Random Variables
- Variance and Expectation
- Conditional and Joint Distributions
- Standard Distributions (Bernoulli, Binomial, Multinomial, Uniform and Gaussian)
- Moment Generating Functions, Maximum Likelihood Estimation (MLE)
- Prior and Posterior
- Maximum a Posteriori Estimation (MAP)
- Sampling Methods.
C. Calculus
In calculus, the following concepts have notable importance in machine learning:
- Integral Calculus
- Partial Derivatives,
- Vector-Values Functions
- Directional Gradient
- Hessian, Jacobian, Laplacian and Lagrangian Distributions.
D. Algorithms and Optimization
The scalability and the efficiency of computation of a machine learning algorithm depend on the chosen algorithm and optimization technique adopted. The following areas are important from this perspective:
- Data structures (Binary Trees, Hashing, Heap, Stack etc)
- Dynamic Programming
- Randomized & Sublinear Algorithm
- Graphs
- Gradient/Stochastic Descents
- Primal-Dual methods
E. Other Concepts
Besides, the ones mentioned above, other concepts of mathematics are also important for a learner of machine learning. They are given below:
- Real and Complex Analysis (Sets and Sequences, Topology, Metric Spaces, Single-Valued, and Continuous Functions Limits, Cauchy Kernel, Fourier Transforms)
- Information Theory (Entropy, Information Gain)
- Function Spaces and Manifolds
2. Neural Network Architectures
Neural networks are the predefined set of algorithms for implementing machine learning tasks. They offer a class of models and play a key role in machine learning.
The following are the key reasons why a machine learning enthusiast needs to be skilled in neural networks:
- Neural networks let one understand how the human brain works and help to model and simulate an artificial one.
- Neural networks give a deeper insight into parallel computations and sequential computations
The following are the areas of neural networks that are important for machine learning:
- Perceptrons
- Convolutional Neural Networks
- Recurrent Neural Network
- Long/Short Term Memory Network (LSTM)
- Hopfield Networks
- Boltzmann Machine Network
- Deep Belief Network
- Deep Auto-encoders
3. Physics
Having an idea of physics definitely helps a machine learning engineer. It makes a difference in designing complex systems and is a skill that is a definite bonus for a machine learning enthusiast. Machine learning has drawn inspiration from statistical physics since its inception. Variational inference and maximum entropy are examples of modern machine learning tools that were developed by physicists.
4. Data Modeling and Evaluation
Machine learning has to work with huge amounts of data and leverage them into predictive analytics. Data modeling and evaluation is important in working with such bulky volumes of data and estimating how good the final model is.
For this purpose, the following concepts are worth learnable for a machine learning engineer:
- Classification Accuracy
- Logarithmic Loss
- Confusion Matrix
- Area under Curve
- F1 Score
- Mean Absolute Error
- Mean Squared Error
5. Advanced Signal Processing Techniques
The crux of signal processing is to minimize noise and extract the best features of a given signal.
For this purpose, it uses certain concepts such as:
- convex/greedy optimization theory and algorithms
- spectral time-frequency analysis of signals
- Algorithms such as wavelets, shearlets, curvelets, contourlets, bandlets, etc.
All these concepts find their application in machine learning as well.
6. Natural language processing
The importance of natural language processing in artificial intelligence and machine learning is not to be forgotten. Various libraries and techniques of natural language processing used in machine learning are listed here:
- Gensim and NLTK
- Word2vec
- Sentiment analysis
- Summarization
7. Audio and Video Processing
This differs from natural language processing in the sense that we can apply audio and video processing on audio signals only. For achieving this, the following concepts are essential for a machine learning engineer:
- Fourier transforms
- Music theory
- TensorFlow
8. Reinforcement Learning
Though reinforcement learning plays a major role in learning and understanding deep learning and artificial intelligence, it is good for a beginner of machine learning to know the basic concepts of reinforcement learning.
Programming Machine Learning Skills to Become an ML Engineer
Machine learning, ultimately, is coding and feeding the code to the machines and getting them to do the tasks we intend them to do. As such, a machine learning engineer should have hands-on expertise in software programming and related concepts. Here is a list of programming skills a machine learning engineer is expected to have knowledge on:
- Computer Science Fundamentals and Programming
- Software Engineering and System Design
- Machine Learning Algorithms and Libraries
- Distributed computing
- Unix
Let us look into each of these programming skills in detail now:
1. Computer Science Fundamentals and Programming
It is important that a machine learning engineer apply the concepts of computer science and programming correctly as the situation demands. The following concepts play an important role in machine learning and are a must on the list of the skillsets a machine learning engineer needs to have:
- Data structures (stacks, queues, multi-dimensional arrays, trees, graphs)
- Algorithms (searching, sorting, optimization, dynamic programming)
- Computability and complexity (P vs. NP, NP-complete problems, big-O notation, approximate algorithms, etc.)
- Computer architecture (memory, cache, bandwidth, deadlocks, distributed processing, etc.)
2. Software Engineering and System Design
Whatever a machine learning engineer does, ultimately it is a piece of software code – a beautiful conglomerate of many essential concepts and the one that is entirely different from coding in other software languages.
Hence, it is quintessential that a machine learning engineer have solid knowledge of the following areas of software programming and system design:
- Scaling algorithms with the size of data
- Basic best practices of software coding and design, such as requirement analysis, version control, and testing.
- Communicating with different modules and components of work using library calls, REST APIs and querying through databases.
- Best measures to avoid bottlenecks and designing the final product such that it is user-friendly.
3. Machine Learning Algorithms and Libraries
A machine learning engineer may need to work with multiple packages, libraries, algorithms as a part of day-to-day tasks. It is important that a machine learning engineer is well-versed with the following aspects of machine learning algorithms and libraries:
A thorough idea of various learning procedures including linear regression, gradient descent, genetic algorithms, bagging, boosting, and other model-specific methods.
- Sound knowledge in packages and APIs such as scikit-learn, Theano, Spark MLlib, H2O, TensorFlow, etc.
- Expertise in models such as decision trees, nearest neighbor, neural net, support vector machine, and a knack for deciding which one fits the best.
- Deciding and choosing hyperparameters that affect the learning model and the outcome.
- Comfortable working with concepts such as gradient descent, convex optimization, quadratic programming, partial differential equations.
- Select an algorithm that yields the best performance from random forests, support vector machines (SVMs), Naive Bayes Classifiers, etc.
4 Distributed Computing
Working as a machine learning engineer means working with huge sets of data, not just focused on one isolated system, but spread among a cluster of systems. For this purpose, it is important that a machine learning engineer knows the concepts of distributed computing.
5. Unix
Most clusters and servers that machine learning engineers need to work are variants of Linux(Unix). Though randomly they work on Windows and Mac, more than half of the time, they need to work on Unix systems only. Hence having sound knowledge on Unix and Linux is a key skill to become a machine learning engineer.
Programming Languages for Machine Learning
Machine learning engineers need to code to train machines. Several programming languages can be used to do this. The list of programming languages that a machine learning expert should essentially know are as under:
- C, C++ and Java
- Spark and Hadoop
- R Programming
- Apache Kafka
- Python
- Weka Platform
- MATLAB/Octave
In this section, let us know in detail why each of these programming languages is important for a machine learning engineer:
- C, C++ and Java: These languages give essentials of programming and teach many concepts in a simple manner that form a foundation stone for working on complex programming patterns of machine learning. Knowledge of C++ helps to improve the speed of the program, while Java is needed to work with Hadoop and Hive, and other tools that are essential for a machine learning engineer.
- Spark and Hadoop: Hadoop skills are needed for working in a distributed computing environment. Spark, a recent variant of Hadoop is gaining popularity among the machine learning tribe. It is a framework to implement machine learning on a large scale.
- R Programming: R is a programming language built by statisticians specifically to work with programming that involves statistics. Many mathematical computations of machine learning are based on statistics; hence it is no wonder that a machine learning engineer needs to have sound knowledge in R programming.
- Apache Kafka: Apache Kafka concepts such as Kafka Streams and KSQL play a major role in pre-processing of data in machine learning. Also, a sound knowledge of Apache Kafka lets a machine learning engineer to design solutions that are both multi-cloud based, or hybrid cloud based. Other concepts such as business information such as latency and model accuracy are also from Kafka and find use in Machine learning.
- Python: Of late, Python has become the unanimous programming language for machine learning. In fact, experts quote that humans communicate with machines through Python language.
Soft Skills or Behavioral Skills Required to Become ML Engineer
Technical skills are relevant only when they are paired with good soft skills. And the machine learning profession is no exception to this rule. Here is a list of soft skills that a machine learning engineer should have:
- Domain knowledge
- Communication Skills
- Problem-solving skills
- Rapid prototyping
- Time management
- Love towards constant learning
Let us move ahead and discuss how each of these skills make a difference to a machine learning engineer.
1. Domain knowledge
Machine learning is such a subject that needs the best of its application in real-time. Choosing the best algorithm while solving a machine learning problem in your academia is far different from what you do in practice. Various aspects of business come into picture when you are a real-time machine learning engineer. Hence, a solid understanding of the business and domain of machine learning is of utmost importance to succeed as a good machine learning engineer.
2. Communication Skills
As a machine learning engineer, you need to communicate with offshore teams, clients and other business teams. Excellent communication skills are a must to boost your reputation and confidence and to bring up your work in front of peers.
3. Problem-solving skills
Machine learning is all about solving real time challenges. One must have good problem-solving skills and be able to weigh the pros and cons of the given problem and apply the best possible methods to solve it.
4. Rapid Prototyping
Choosing the correct learning method or the algorithm are signs of a machine learning engineer’s good prototyping skills. These skills would be a great saviour in real time as they would show a huge impact on budget and time taken for successfully completing a machine learning project.
5. Time management
Training a machine is not a cakewalk. It takes huge time and patience to train a machine. But it’s not always that machine learning engineers are allotted ample time for completing tasks. Hence, time management is an essential skill a machine learning professional should have to effectively deal with bottlenecks and deadlines.
6. Love towards constant learning
Since its inception, machine learning has witnessed massive change – both in the way it is implemented and in its final form. As we have seen in the previous section, technical and programming skills that are needed for machine learning are constantly evolving. Hence, to prove oneself a successful machine learning expert, it is very crucial that they have a zeal to update themselves – constantly!
How to Improve Machine Learning Skills?
Improving machine learning skills involves a blend of structured learning and practical experience. Start by enrolling in comprehensive courses like upGrad's Machine Learning program, which offers an exhaustive syllabus and experienced instructors to guide you through the nuances of ML. This course covers essential topics such as Python programming, data modeling, and neural network architectures, providing a solid foundation.
To improve your skills further, make use of online resources. Engage in hands-on projects and participate in competitions on platforms like Kaggle to gain real-world experience. Consistently practice coding in languages like Python and R, and familiarize yourself with machine learning libraries such as TensorFlow and Scikit-Learn.
Keep up with the latest trends and research in the field by following relevant blogs, attending webinars, and joining professional networks. By combining theoretical knowledge with practical application, you'll be well-prepared to tackle complex machine learning challenges.
Machine Learning Career Outlook
Look at the stats that show a positive trend for machine learning projects and careers.
- Gartner’s report on artificial intelligence showed that as many as 2.3 million jobs in machine learning would be available across the globe by 2020.
- Another study from Indeed, the online job portal giant, revealed that machine learning engineers, data scientists, and software engineers with these skills are topping the list of most in-demand professionals.
- High-profile companies such as Univa, Microsoft, Apple, Google, and Amazon have invested millions of dollars in machine learning research and designing and are developing their future projects on it.
With so much happening around machine learning, it is no surprise that any enthusiast who is keen on shaping their career in software programming and technology would prefer machine learning as a foundation to their career. This post is specifically aimed at guiding such enthusiasts and gives comprehensive information on machine learning skills that are needed to become an ML engineer, who is ready to dive into the real-time challenges.
Conclusion
The world of machine learning engineering is dynamic and demanding. It requires a unique blend of technical prowess, which is a combination of data skills, software engineering skills, and machine learning skills. It is also essential that they possess soft skills such as adaptability and effective communication to work with teams across challenging projects.
Whether you are entering the field fresh or making a career transition, how to improve machine learning skills is matter of systematic approach to learning the right topics. I would recommend starting by taking up a certification path, such as upGrad's Machine Learning online course, which offers an exhaustive syllabus and experienced instructors who can guide you at your skill level. With the practical experience gained from the course, you can be confident in your machine learning engineer skills.
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Frequently Asked Questions (FAQs)
1. What are the 4 basics of machine learning?
The four basics, which are also the skills needed for machine learning include understanding algorithms, proficiency in programming languages, navigating extensive datasets, and designing models for learning and prediction.
2. What are the 3 types of machine learning?
The three types of machine learning include
- Supervised learning
- Unsupervised learning
- Reinforcement learning
3. How do I become an ML engineer?
To build the skills needed for machine learning engineer, start by mastering programming languages (Python, R), understanding algorithms, and gaining proficiency in data handling. Pursuing relevant education in computer science and software engineering can go a long way in establishing a path. For others, certifications or practical experience in machine learning can work as a feasible path.
4. What are the key skills needed for data preprocessing in Machine Learning?
You need to know how to clean and transform data, handle missing values and outliers, and use tools like Pandas and NumPy. Understanding feature engineering is also important.
5. What skills are needed to deploy a Machine Learning model?
You'll need to know how to use Docker, work with cloud platforms like AWS or Azure, and create APIs for model integration. Familiarity with CI/CD pipelines is also helpful.
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