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Who Is Data Engineering, & What Does The “Data Engineer” Do?

The job of data professionals is to get companies to adopt a data-driven approach. To make them wise organizations, on account of the broad utilization of advanced examination and artificial consciousness (artificial intelligence) in the DataOps period. That is the secret. Data engineers work intimately with information researchers, furnishing them with the information to utilize. They design and implement data management, monitoring, cybersecurity, and privacy. 

Data engineers leverage data and transform processes to enable data scientists to perform predictive analytics, machine learning, and data mining. The job of data engineers is to enable companies to adopt a data-driven approach. In the era of DevOps and DataOps methodologies, they must also make them smart companies, thanks to the widespread use of advanced analytics and artificial intelligence (AI).

Data Engineering, What It Is, And Why It Is Helpful For Companies

There is no data science without data engineering. Data engineering deals with the process, from the point of view of constitution and composition, of data analysis. Data comes from data logistics. So it must also unlock the data trapped in isolated silos, legacy systems, or apps with low frequency of use. 65% of companies implement at least 10 data engineering and intelligence tools.  

The reason is that companies today have tools, technologies, and multiple tools to innovate their data environments. Still, at the same time, “freedom without a framework turns into chaos.” DataOps, therefore, represents the framework, i.e., the set of technological practices, cultural rules, and principles aimed at modernizing the operational aspects of business initiatives concerning data. The aim is to make them more efficient and perform and improve data quality.

The DataOps Framework

Since in DataOps, “analytics is code,” each phase of acquisition, transformation ( ETL ), and analysis and, more generally, the whole routine from raw data to the consumer, must be inspired by the principles of:

  1. modularity;
  2. automation;
  3. iteration;
  4. continuous improvement.

The DataOps methodology, which generates automated data pipelines and fosters collaboration between professionals, freeing teams from repetitive, error-prone, and low-value-added activities, accelerates time to market.

Data Engineer: What The Data Professional Does

The data professional has the task of breaking down errors, introducing innovation and accelerating testing, collaborating between different environments, IT, and professionals, generating an increase in productivity, and ensuring the results’ transparency. Through DataOps, it is the new data management paradigm parallel to DevOps. It allows the data engineer to automate experimentation and analysis of the data pipeline and behavior. It aims to find and promptly report any anomalies. By eliminating anomalies, it improves data quality.

Its mission is also to ensure that customers, partners, and users of data analytics platforms have everything they need for complete data management. Data engineers are dedicated to managing ETL processes (Extract, Transform, and Load processes). Methods range from data collection from unlimited sources to their subsequent organization and centralization in a single repository. The ETL process makes data available by extracting it from multiple sources and then passing it to data cleaning, transformation, and loading the extracted and transformed data into data warehouses/data lakes. Today this happens in hybrid cloud environments.

What Are The Skills Of A Data Engineer?

The data professional combines high-level technical expertise, data ecosystem expertise, and customer-focused skills. It aims to interact with data, with customers (internal and external), and with other stakeholders to get inspiration from new ideas. Putting them into practice and simplifying the implementation of data-driven approaches is, in fact, his task. Provides updates to customers by updating the roadmap and obtains continuous feedback to improve the methodology and the tools.

The data professional is therefore versed in collaboration, orchestration, and automation. Thus it promotes the data quality that fuels trust in data and the culture of data itself. He interacts with local managers to coordinate the developing and maintaining technical resources; he creates white papers, presentations, training materials, or documentation on specific topics.

Languages ​​​​And Databases

The data engineer knows programming languages ​​​​such as Java, Scala, Python, R, and SQL, especially the last three, and Unix-based operating systems. Furthermore, he knows data warehouses and data lakes, NoSQL databases and Apache Spark systems, relational databases, such as MySQL and PostgreSQL. He knows how to configure business intelligence platforms. He boasts expertise in DataOps and, in parallel, in systemic and innovative data management paradigms such as Data Fabric.

To adopt a DataOps framework in the company, the data engineer knows how to introduce tools capable of adapting a process to the new paradigm. It also knows how to orchestrate and automate testing throughout the data pipeline. Define metrics, and analyze problems, data, and trends to make data-driven decisions that improve the quality of technical resources and new ways of working.

The Specific Skills

In particular, he should have digital skills in Apache Airflow to orchestrate DataOps and be proficient in iCEDQ for testing and automated monitoring activities. He should also have knowledge of  Git in version control and Jenkins as it applies to CI/CD processes. The data engineer generally masters all the most reliable and popular deployment technologies. Finally, he spreads awareness to his immediate superiors regarding processes, protocols, or education.


To rely on reliable and trusted data, data engineers must have expertise in proactive data observability platforms. In this way, they can shed light on the health of the information inside the systems and focus on and correct anomalies or possible pipeline interruptions in real time (or almost). Increasingly, they need to have machine learning and artificial intelligence skills, run reliable data and AI at scale, and drive data observability through every application.

How Much Does A Data Engineer Earn

When evaluating an application for a data engineer position, employers require a computer science or engineering degree. They prefer those with many years of experience (three to five years) in the sector. With more than half of large companies looking for data engineers, the average salary exceeds $112,000 in the US, according to GlassDoor. It starts from 30,000 euros for a junior figure in their first job to 80-100 thousand euros for a senior role. But salaries vary from SMEs to large companies.

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