Principal Data Engineer

Job Title:

Principal Data Engineer
Location:

London, UK – Hybrid (Liverpool Street office)
Department:

Data & Engineering
Reports To:

Head of Data Science
Employment Type:

Permanent

A leading global

payments and fintech platform , empowering clients to innovate and scale. Their mission is to create

frictionless, secure, and intelligent payment solutions

that unlock value across banking, financial services, and digital assets.

As they continue to scale their

data infrastructure , they’re seeking a seasoned

Principal Data Engineer

to help design, build, and optimise a modern data platform, with a focus on orchestration (Airflow), scalable data warehouse architecture, and high-performance pipelines.

The ideal candidate will bring both

technical depth

and

strategic thinking , with the ability to communicate effectively across business and technical teams.

Key Responsibilities
Design and lead the development of scalable, secure, and high-performance data warehouse solutions for BI and analytics.
Define and drive the long-term architecture and

data strategy

in alignment with business goals.
Own orchestration of ETL/ELT workflows using

Apache Airflow , including scheduling, monitoring, and alerting.
Collaborate with cross-functional teams (Product, Engineering, Data Science, Compliance) to define data requirements and build reliable data flows.
Champion best practices in data modelling, governance, and DevOps for data engineering (CI/CD, IaC).
Serve as a key communicator between technical teams and business stakeholders, translating complex data needs into actionable plans.
Mentor and lead data engineers, fostering continuous learning and technical excellence.
Ensure compliance with

data security , privacy, and regulatory standards (e.g.,

PCI-DSS ,

GDPR ).

Essential:
7+ years in Data Engineering, with 2+ years in a Principal or Lead role.
Proven experience designing and delivering

enterprise data strategies .
Exceptional communication and stakeholder management skills.
Expertise in enterprise-grade data warehouses (Snowflake, BigQuery, Redshift).
Hands-on experience with

Apache Airflow

(or similar orchestration tools).
Strong proficiency in

Python

and

SQL

for pipeline development.
Deep understanding of data architecture, dimensional modelling, and metadata management.
Experience with cloud platforms (AWS, GCP, or Azure).
Familiarity with version control,

CI/CD , and

Infrastructure-as-Code

(Terraform or similar).

Desirable:
Background in fintech or payments.
Knowledge of

streaming frameworks

(Kafka, Kinesis).
Experience with

dbt

and data quality frameworks (e.g.,

Great Expectations ).

What’s on Offer
Competitive base salary + bonus
Flexible hybrid working model (Liverpool Street office)
Private healthcare & wellness benefits
Learning and development support
The opportunity to shape the future of payments data infrastructure