Principal Data Engineer

Salary: £50,000 - 90,000 per year

Requirements:

• We require candidates to hold active eDV clearance.
• Experience working in an Agile delivery team.
• Strong analytical skills related to working with unstructured datasets.
• Knowledge of Python, including PySpark, Pandas, and PyArrow.
• Knowledge of distributed data processing, such as Apache Spark.
• Knowledge of data ETL tools, such as Apache Airflow, AWS Step Functions, or Apache NiFi.
• Experience with cloud services such as AWS, Azure, or GCP.
• Knowledge of messaging and streaming technologies such as Kafka, AWS SQS, or other cloud queuing services.
• Knowledge of SQL and NoSQL storage, such as HDFS, Iceberg, Elastic, S3, or data lakes.
• Knowledge of containerisation and orchestration tools such as Docker, Kubernetes, or Openshift.
• Knowledge of testing frameworks and best practices.
• Familiarity with code repositories, branching strategies, pull requests, and merge processes.
• We can provide training and development in some areas; candidates do not need expertise in every listed area.

Responsibilities:

• Build and maintain data processing pipelines that clean, transform, and aggregate data from disparate sources.
• Transform and optimise data for analytical use.
• Collaborate with stakeholders and other engineers.
• Contribute to the completion of project milestones.
• Contribute to continuous improvement within the team.
• Collaborate with peers on the teams technical direction.

Technologies:

• Airflow
• AWS
• Azure
• Cloud
• Docker
• ETL
• GCP
• Kafka
• Kubernetes
• NoSQL
• OpenShift
• Python
• PySpark
• SQL
• Security
• Spark
• pandas
• Support

More:

We are Raytheon UK, a defence and aerospace technology company working across the UK and supporting government and international customers with solutions across land, sea, air, space, and cyberspace, as well as digital and training transformation. Our National Security Cyber business delivers mission-critical solutions in a mature, agile environment, where SCRUM teams work with customers on complex digital challenges. This is a permanent, onsite Principal Data Engineer role based in London, within our experienced Software Engineering function and a cross-functional Agile team. We offer a competitive salary, a contributory pension with up to 10.5% company contribution, life assurance, 25 days holiday increasing with service, public holidays, the option to buy or sell up to five days, a discretionary bonus, flexible benefits, enhanced sick pay, and enhanced family-friendly leave. Our 37-hour working week includes an early Friday finish; working arrangements may vary by role and site. We also offer up to five paid volunteering days each year and a flexible working culture focused on output. We are committed to equal employment and give qualified applications careful consideration without regard to protected characteristics.

last updated 39 week of 2026