How statistics are calculated
We count how many offers each candidate received and for what salary. For example, if a Data Engineer developer with AWS Redshift with a salary of $4,500 received 10 offers, then we would count him 10 times. If there were no offers, then he would not get into the statistics either.
The graph column is the total number of offers. This is not the number of vacancies, but an indicator of the level of demand. The more offers there are, the more companies try to hire such a specialist. 5k+ includes candidates with salaries >= $5,000 and < $5,500.
Median Salary Expectation – the weighted average of the market offer in the selected specialization, that is, the most frequent job offers for the selected specialization received by candidates. We do not count accepted or rejected offers.
Trending Data Engineer tech & tools in 2024
Data Engineer
What is a data engineer?
A data engineer is a person who manages data before it can be used for analysis or operational purposes. Common roles include designing and developing systems for collecting, storing and analysing data.
Data engineers tend to focus on building data pipelines to aggregate data from systems of record. They are software engineers who put together data and combine, consolid aspire to data accessibility and optimisation of their organisation’s big data landscape.
The extent of data an engineer has to deal with depends also on the organisation he or she works for, especially its size. Larger companies usually have a much more sophisticated analytics architecture which also means that the amount of data an engineer has to maintain will be proportionally increased. There are sectors that are more data-intensive; healthcare, retail and financial services, for example.
Data engineers carry out their efforts in collaboration with particular data science teams to make data more transparent so that businesses can make better decisions about their operations. They use their skills to make the connections between all the individual records until the database life cycle is complete.
The data engineer role
Cleaning up and organising data sets is the task for so‑called data engineers, who perform one of three overarching roles:
Generalists. Data engineers with a generalist focus work on smaller teams and can do end-to-end collection, ingestion and transformation of data, while likely having more skills than the majority of data engineers (but less knowledge of systems architecture). A data scientist moving into a data engineering role would be a natural fit for the generalist focus.
For example, a generalist data engineer could work on a project to create a dashboard for a small regional food delivery business that shows the number of deliveries made per day over the past month as well as predictions for the next month’s delivery volume.
Pipeline-focused data engineer. This type of data engineer tends to work on a data analytics team with more complex data science projects moving across distributed systems. Such a role is more likely to exist in midsize to large companies.
A specialised, regionally based food deliveries company could embark upon a pipeline-oriented project, building an analyst tool that allows data scientists to comb through metadata to retrieve information about deliveries. She could look at distances travelled and time spent driving to make deliveries in the past month, and then input those results into a predictive algorithm that forecasts what those results mean about how they should do business in the future.
Database centric engineers. The data engineer who comes on-board a larger company is responsible for implementations, maintenance and populating analytics databases. This role only comes into existence where data is spread across many databases. So, these engineers work with pipelines, they might tune databases for particular analysis, and they come up with table schema using extract, transform and load (ETL) to copy data from several sourced into a single destination system.
In the case of a database-centric project at a large, national food delivery service, this would include designing an analytics database. Beyond the creation of the database, the developer would also write code to get that data from where it’s collected (in the main application database) into the analytics database.
Data engineer responsibilities
Data engineers are frequently found inside an existing analytics team working alongside data scientists. Data engineers provide data in usable formats to the scientists that run queries over the data sets or algorithms for predictive analytics, machine learning and data mining type of operations. Data engineers also provide aggregated data to business executives, analysts and other business end‑users for analysis and implementation of such results to further improve business activities.
Data engineers tend to work with both structured data and unstructured data. Structured data is information categorised into an organised storage repository, such as a structured database. Unstructured data, such as text, images, audio and video files, doesn’t really fit into traditional data models. Data engineers must understand the classes of data architecture and applications to work with both types of data. Besides the ability to manipulate basic data types, the data engineer’s toolkit should also include a range of big data technologies: the data analysis pipeline, the cluster, the open source data ingestion and processing frameworks, and so on.
While exact duties vary by organisation, here are some common associated job descriptions for data engineers:
- Build, test and maintain database pipeline architectures.
- Create methods for data validation.
- Acquire data.
- Clean data.
- Develop data set processes.
- Improve data reliability and quality.
- Develop algorithms to make data usable.
- Prepare data for prescriptive and predictive modeling.
Where is AWS Redshift used?
Big Data Party Warehouse
- Transforms data lakes into a disco ball of insights, shaking up analytics faster than you can say 'query.'
Analytics Time Machine
- Like Doc Brown, it zooms through historical data trends faster than a DeLorean hitting 88 MPH.
The Marketing Crystal Ball
- Peers into customer behaviors, predicting the next shopping spree like a fortune teller at a carnival.
Financial Puzzle Solver
- Lays out your dollars and cents like a Sudoku master, making your accounts as balanced as a zen monk.
AWS Redshift Alternatives
Google BigQuery
BigQuery is a fully-managed, serverless data warehouse that enables scalable analysis over petabytes of data. It is a Platform as a Service (PaaS) that supports SQL and automatic data encryption.
SELECT name, COUNT(*) as name_count
FROM `bigquery-public-data.usa_names.usa_1910_current`
GROUP BY name
ORDER BY name_count DESC
LIMIT 10
- Serverless, no infrastructure to manage
- Real-time analytics with high-speed streaming insert
- Integrates with Google's data ecosystem
- Query pricing may be unpredictable
- Lack of control over performance tweaks
- Vendor lock-in specific to Google’s ecosystem
Microsoft Azure Synapse Analytics
Azure Synapse is an analytics service that brings together enterprise data warehousing and Big Data analytics. It offers a unified experience to ingest, prepare, manage, and serve data for immediate BI and machine learning needs.
SELECT TOP 10 *
FROM [SalesLT].[Product]
WHERE Color = 'Black'
- Tightly integrated with other Azure services
- On-demand or provisioned resources
- Powerful security features
- Can be complex to set up and manage
- Potential for higher costs with scaling
- Less ideal for organizations not committed to Azure
Snowflake
Snowflake is a cloud-based data platform built for the cloud that supports a wide range of technology ecosystems. It offers near-unlimited scale, concurrency, and performance.
SELECT COUNT(*)
FROM database.schema.table;
- Supports multi-cloud environments
- Separate compute and storage scaling
- Simple to use with a clear pricing model
- Data transfer costs between clouds
- Extra cost for advanced features
- Required data loading and handling
Quick Facts about AWS Redshift
Redshift: AWS's Data Warehouse Powerhouse
Picture this: the year is 2012, and the cloud is bursting with potential. Amazon Web Services busts onto the scene with Redshift, and suddenly, big data analytics is accessible to even the smallest of businesses. This petabyte-scale data warehousing service isn't just a storage hub; it's the Usain Bolt of data queries, racing through massive datasets faster than a squirrel on espresso.
Columnar Storage Shenanigans
AWS Redshift flipped the script on data storage by ditching the old-school row-based storage for columnar storage, making data analysts practically giddy with speed improvements. Imagine trading in your bulky filing cabinet for a sleek, streamlined set of binders. Each query is like a ninja slicing through data, only grabbing what it needs – a sheer act of technical artistry.
Continuous Ingenuity With Spectrum
In the twisty-turny world of tech, AWS Redshift kept spicing things up, rolling out Redshift Spectrum in 2017. With Spectrum, your querying game steps up to a whole new league, scouring through exabytes of data in S3 with no sweat. Now that's like having a superpowered magnifying glass that can spot an ant from the top of the Empire State Building!
What is the difference between Junior, Middle, Senior and Expert AWS Redshift developer?
Seniority Name | Years of Experience | Average Salary (USD/year) | Responsibilities & Activities |
---|---|---|---|
Junior AWS Redshift Developer | 0-2 years | $70,000 - $90,000 |
|
Middle AWS Redshift Developer | 2-5 years | $90,000 - $115,000 |
|
Senior AWS Redshift Developer | 5-10 years | $115,000 - $140,000 |
|
Expert/Team Lead AWS Redshift Developer | 10+ years | $140,000+ |
|
Top 10 AWS Redshift Related Tech
SQL (Structured Query Language)
Behold SQL, the mighty gatekeeper to the world of Redshift data! It’s like the magic words that unlock the treasures within your database - a must-know lingo for wooing the rows and columns. From SELECT statements that play favorites by picking specific data, to INSERT spells that let new data crash the party, SQL is the grandmaster of data manipulation in Redshift’s relational database dojo.
SELECT customer_id, SUM(order_total)
FROM sales
GROUP BY customer_id;
Python
Python slithers into Redshift development like a nimble ninja, blending seamlessly with its psycopg2 and SQLalchemy libraries. Whisper an API incantation or craft a data pipelining charm, and behold as rows and columns dance at your command. With Python, you're the puppeteer of petabytes, orchestrating ETL symphonies and analytics ballets with ease.
import psycopg2
connection = psycopg2.connect(
dbname='your_db',
user='you',
password='supersecret',
host='your-redshift-cluster'
)
# Dance, data, dance!
Amazon S3 (Simple Storage Service)
Imagine a boundless chest where your troves of data pirates stash their treasures – that’s S3 for Redshift. It’s the trusty sidekick, dutifully securing your booty (data) in digital lockers until Redshift beckons with COPY commands. Like a well-oiled switchboard, it operates round-the-clock, ensuring swift, seamless pours of data into Redshift’s voracious maw.
COPY sales
FROM 's3://your-bucket/sales/'
CREDENTIALS 'aws_iam_role=your-iam-role'
CSV;
AWS Data Pipeline
Picture a bustling factory line neatly arranged within the cloud, that’s AWS Data Pipeline for you. It’s the conveyor belt that plays matchmaker between disparate data sources and AWS services. Automate this Romeo and Juliet of data flows, and you’ll see star-crossed datasets unite within Redshift's embrace, dancing a tango of synchronized updates and orchestrated loads.
AWS Lambda
When you wish to add a dash of wizardry to your Redshift escapades, Lambda is the enchanting wand. Cast a serverless incantation to conjure data transformations or mystical event responses. It’s your loyal spellbook, brimming with scripts that zap into action on a whim, manipulating your data lakes with a flick and a function.
exports.handler = async (event) => {
// Your Lambda magic here.
};
Apache Spark
Dive into the cauldron of big data sorcery with Apache Spark, the alchemist’s stone turning raw data into golden insights. With the Spark-Redshift concoction, you can distill rivers of data into potent elixirs of analysis, incorporating Python or Scala spells for that extra kick of speed and power. It's like brewing an analytics potion with the intensity cranked to eleven.
Tableau
Step right up and gaze into Tableau’s crystalline orbs, wherein lies the power to visualize Redshift’s prophecies. Through the mystic arts of drag-and-drop, behold as data points leap into vivid charts and graphs. With Tableau's visionary prowess, even the murkiest of Redshift datasets unravel into tapestries of insight that mere mortals can behold and understand.
Amazon QuickSight
In the realm of business intelligence, Amazon QuickSight emerges as your crystal ball into the future. It peers directly into the soul of Redshift, unveiling the hidden stories within your data. With blazing scrolls (dashboards) and encrypted runes (analyses), it brings forth clarity from chaos, all with the swiftness of a well-aimed arrow.
Amazon Glue
When your data feels as scattered as a jester’s thoughts, Amazon Glue sticks the pieces together with the finesse of a master craftsman. It's the dungeon keeper of metadata, the ETL alchemist that whispers sweet nothings to disparate sources making them seamlessly assimilate into Redshift’s vaulted halls, ready for querying knights to explore.
Terraform
In the kingdom of Redshift, Terraform carves the very earth beneath your feet. It lays the infrastructure like a masterful mage casting a grand spell, conjuring servers and storage from the nether with the mere utterance of a ‘plan’ and ‘apply’. Invoke its power responsibly, for with great infrastructure-as-code comes great efficiency.
resource "aws_redshift_cluster" "default" {
cluster_identifier = "tf-redshift-cluster"
database_name = "mydb"
node_type = "dc2.large"
number_of_nodes = 1
}