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What Is The Difference Between Data Scientist, Data Engineer And Data Analyst Jobs?

What Is The Difference Between Data Scientist, Data Engineer And Data Analyst Jobs?

Much Has Been Published On The Web About The Differences Between Data Scientist, Data Engineer, And Data Analyst Job Positions. 

One of the reasons for this issue is the growing interest of information technology professionals in these specialized and money-making areas.

While a few years ago, companies mainly focused on extracting actionable insights from data; this issue gradually gave way to data management.

Today, various companies and industries are looking to build the best models, which is possible due to access to high-quality data.

Only then will you achieve valuable results. This issue has caused the job position of data engineer to be noticed by companies.

This article will examine the most important differences between these job positions, responsibilities, tools, languages ​​and software, educational background, salaries, and prospects.

Data is the most critical decision-making factor, and today, no large organization can properly implement strategic plans without making data-based decisions. In information technology and data-driven jobs, various job positions are based on data.

However, have you ever wondered what differentiates a data scientist from a data analyst or a data engineer?

For most employers, data engineers, data scientists, and data analysts seem to be different names for the same job. It is true that they all deal with data sets and play an essential role in formulating data-related strategies, but they have specific job descriptions. At the same time, significant differences exist between these roles, skill sets, and responsibilities.

Data engineers create, test, and maintain data ecosystems. These ecosystems are essential for companies and data scientists who analyze data to build predictive algorithms. In the same way, we must say that what data engineers do has a decisive role in the output of data scientists. More specifically, a data engineer is part of a data-driven team that works collaboratively with analysts and data scientists on a project.

Data Analyst

Most IT professionals who want to enter the world of data-driven jobs start as data analysts. Typically, data analysts need a bachelor’s degree and adequate knowledge of mathematics and statistics. In addition, companies expect a data analyst to have a sufficient understanding of data management, modeling, and reporting methods. Of course, strong technical skills are a plus and can set one apart from the competition.

The process of extracting information from a data set is called data analysis. Based on this definition, the data analyst is the person who is assigned this task. A data analyst extracts information from the data in various ways, such as cleaning, transformation, and modeling.

Today, industries like information technology, medicine, social sciences, business, etc., use data analysis to understand issues better. Two of the most important techniques used in data analysis are descriptive or summary statistics and inferential statistics.

SQL and Microsoft Excel are two of the most popular and common tools data analysts use. For this reason, a data analyst must have sufficient knowledge about these data visualization techniques and tools. These skills help him share his work with the team to help them adopt the right solutions. In addition, data analysis allows industries to write precise queries and achieve the desired results quickly.

What skills does a data analyst need?

Among the essential and basic skills of a data analyst, the following should be mentioned:

  • Statistics: A background in various statistics fields is essential for a data analyst. Statistical knowledge makes data exploration easier and lessens logical errors in doing things. Also, data analysts cannot work without using statistical analysis tools such as MATLAB, SPSS, and SAS.
  • SQL: Analyzing data means extracting data from databases or data warehouses. Data analysts use SQL as a powerful tool in this field.
  • Microsoft Excel: A deep understanding of Excel and its advanced features will help data analysts perform assigned tasks more accurately. Typically, analysts learn R or Python and Excel to work better with big data. Excel is more than just a spreadsheet and offers powerful capabilities for fast analysis and light database work.

Illustration tools

Data analysts must be able to create visual representations of complex data sets to make the information more accessible for others to understand. For this purpose, they use visualization tools like Tableau, Infogram, QuickSight, Power BI, and more.

The primary responsibilities of a data analyst

Typically, the responsibilities of a data analyst are as follows:

  •  Data analysis through descriptive statistics
  •  Using languages ​​designed to work with databases to retrieve and manipulate information
  •  Filter data, clean and edit data if necessary
  •  Interact with team members through data visualization
  •  Attending team meetings to understand the business needs of the company
  •  Familiarity with essential math topics
  •  Mastery of Excel and SQL
  •  Familiarity with problem formulation and analytical skills

Data Engineer

A data engineer specializes in collecting and preparing data for analytical applications. A data engineer needs a solid technical background in working with data and how to use application programming interfaces (APIs). These professionals must have experience in how clean data and optimize workflows. In addition, data engineering should have sufficient knowledge of the architectures used in the data processing.

In other words, a data engineer prepares an infrastructure for organizing and storing data. This person is responsible for converting data into a format that data scientists can work with.

Data engineers must have the ability to work with structured and unstructured data. Therefore, they must have the necessary skills to work with SQL and NoSQL databases. Data engineers help data scientists complete assigned tasks faster and more accurately. In addition, they must know how to receive, clean, format, and replicate metadata and store it in databases efficiently.

A data engineer who is familiar with programming concepts and algorithms and has the necessary experience will quickly get the desired job.

The role of a data engineer is similar to that of a software engineer in that a data engineer has sufficient knowledge of operating systems and their architecture. For example, a data engineer developing cloud infrastructures to host data for real-time analysis must know the basics of network protocols and server operating systems.

Also, he should know how to create functional programming interfaces, which is one of his main tasks.

Another critical skill a data engineer needs is the ability to test data. The data engineer’s job is to evaluate the entire architecture and infrastructure to detect logging errors, fast processing, implement high-quality data transmission lines, and correct database operation to ensure data scientists can access a stable and reliable communication channel.

Tools used by data engineers

Data engineers use different tools to perform their tasks, but some tools are standard and used by all data engineers. These tools are as follows:

  • Apache Hadoop: A big data source software platform that all data engineers should know how to work with. This platform includes Hadoop and HDFS distributed framework used for efficient data processing. 
  • Spark is a fast processing and big data analytics platform developed by the Apache Foundation. This tool is an evolved version of Hadoop that works with batch and streaming data. 
  • Kubernetes is a Google-developed tool for setting up clusters, scaling, and automating applications. A powerful technology that has created a great revolution in cloud computing. 
  • Java is one of the most powerful programming languages ​​for developing enterprise software solutions. Data engineers use Java for data transfer infrastructure, although Python is the first choice. 
  • Yarn: It is a part of the Hadoop Core project that allows multiple data processing engines to use the data stored in a system optimally. YARN is an efficient tool used to improve Hadoop computing cluster performance. 
  • Data management: Data management is one of the primary skills needed by a data engineer. Data engineers use Structured Query Language (SQL) to interact with databases. 
  • Database systems: Data engineers must be able to work with SQL-based systems such as MySQL, PostgreSQL, Microsoft SQL Server, and Oracle Database, along with NoSQL databases such as MongoDB, Cassandra, Couchbase, and Oracle NoSQL Database. 
  • ETL solutions: Data engineers must use ETL tools to build data transfer processes between systems. Powerful tools in this field include SAP Data Services, StitchData, Xplenty, Informatica, and Segment. 
  • Data warehouse software: The ability to set up hypermetric data warehouses and connect data transmission lines to them is essential. Amazon Redshift, Panoply, BigQuery, and Snowflake are robust storage solutions in this field. 
  • Coding ability: One of the common skills that all three experts must be familiar with is the ability to code in one of the three languages ​​in this field, i.e., Python, Scala, or Java. Python is often used for ETL tools. For this reason, we suggest that data engineers enhance their coding skills using these languages. 
  • Big data tools: Apache Spark, Apache Kafka, Apache Hadoop, and Apache Cassandra are among the powerful tools that data engineers need to work with big data. The first two are very important, and you must be familiar with one of them. 

Responsibilities of a data engineer

The general duties of a data engineer are as follows:

  •  Development, construction, and maintenance of data architecture
  •  Repeated testing of data transmission infrastructure
  •  Manage error reporting and provide an integrated data structure
  •  Ability to handle raw and unstructured data
  •  Providing recommendations aimed at improving data quality and performance
  •  Ensuring that data scientists can work with data structures
  •  Development of processes aimed at data modeling, data mining, and production
  •  Proficiency in programming tools such as Python and Java
  •  Ability to extend the functionality of ETL tools
  •  Mastery of SQL and NoSQL technologies such as Cassandra and MongoDB
  •  Adequate knowledge of data warehouse and big data technologies such as Hadoop, Spark, Pig, and Hive

Data Scientist

A data scientist or data scientist is a person who analyzes and interprets complex digital data. For this purpose, a Data Scientist should be well-versed in advanced statistical analysis, machine learning, data monitoring, etc.

Data science is an interdisciplinary field resulting from the collaboration of mathematics, statistics, and programming. However, as technologies advance, multidisciplinary approaches are emerging and expanding. Industries can make data-driven decisions with the help of data knowledge. Data is everywhere and, if used correctly, provides unique added value to companies. However, few expert data scientists today can analyze data accurately due to the steep learning curve. This issue has caused a significant gap in this field.

Some users assume that building machine learning models is the sole responsibility of a data scientist, when these professionals, after receiving actionable output, must translate the findings into information for CEOs using data visualization tools. Be understandable, convert. After accepting the results, the data scientists realize they have done their job correctly and completed the project.

As we mentioned, the core skill set of a data analyst revolves around accessing, managing, and processing data.

On the other hand, a data engineer needs a moderate level of programming and mastery of statistics and mathematics to build complete algorithms. A data scientist must be skilled enough to understand data properly and use statistical and mathematical techniques and deep programming knowledge to build models.

Data science is one of the most popular jobs in information technology. So that prestigious institutions like MIT have described it as the most attractive job of the 21st century. Data scientists need different skill sets to do their job well. These people should be masters in working with linear algebra and statistics and be able to convert formulas and algorithms into applications.

Skills needed by a data scientist

The skill set that a data scientist should have is a combination of data analysis and data engineering skills. However, there are other skills, the most important of which are the following:

  • R programming language (R): This programming language has unique features that make it a good choice for working with data. Using this programming language, you can process any information model and solve statistical problems.
  • Python programming language: It is one of the essential tools a data scientist should have in his toolbox. Most experts consider this language an excellent alternative to Java, Perl, or C++ due to its unique ecosystem for working with data. 
  • Hadoop: Mastering Hadoop increases the chances of a data scientist getting a job compared to competitors. Data scientists with experience working with technologies like Hive, Pig, and cloud-based tools like Amazon S3 have a higher chance of being hired. 
  • SQL: Data scientists must have sufficient skills in working with databases and be able to use SQL smoothly. SQL helps data scientists write highly optimized queries to run on databases. 
  • Algebra, statistics, and machine learning: Data scientists must thoroughly know linear algebra and statistics to perform their assigned tasks. 
  • Data visualization tools: Organizations generate a large amount of data daily. The best way to show this volume of data in an understandable way for users is to visualize them. 
  • Communication Skills: Companies looking for an expert data scientist try to hire people with communication skills to interact with team memteam members cities of a data scientist

Among the most critical responsibilities of a data scientist, the following should be mentioned:

  •  Perform data preprocessing, including data modification and data cleaning
  •  Using different machine learning tools to predict and classify patterns in data
  •  Improving the performance and accuracy of algorithms through the optimization of models
  •  Understanding company needs and formulating problems 
  •  Storytelling ability to present technical content in a simple format to non-technical people
  •  Mastery of mathematical and statistical skills
  •  Ability to manage structured and unstructured information
  •  Deep knowledge of Python, R, and SAS programming languages
  •  Familiarity with popular machine learning algorithms and models
  •  Familiarity with SQL and NoSQL architecture
  •  Getting to know tools that can be used for big data 

last word

As you can see, the description of duties, responsibilities, and the work these three professionals do are similar, but they are not the same. A data scientist is someone who takes the lead in all data-related activities.

The role of the data engineer should be described as the connector of the two job titles of data analyst and data scientist because collecting and organizing data and creating data transmission lines helps professionals access the data they need.