Junior Data Engineer – AI-Driven Data Pipelines

Liberis; Greater London; On-site; GBP 28,000 - 36,000; Full time

Benefits offered by this job

Flexible benefits allowance

Wellhub membership

25 days leave + holidays

Life assurance 4x salary

Travel opportunities

Office socials and Lunch & Learn

Job summary

Fospha, the measurement system used by leading enterprise retail and ecommerce brands, builds data pipelines that transform marketing spend and performance data into clear, actionable insights. This early-career role focuses on core data engineering workstreams, including large-scale SQL/dbt transformation pipelines, data ingestion services, and APIs serving insights.

You’ll learn by shipping real production code from day one, work with data engineers, analysts and AI agents in an AI-first

Qualifications

• A relevant degree (Computer Science, Data Engineering, Mathematics, or similar), or equivalent experience through internships/placements/personal projects
• Some experience with SQL and Python
• Genuine curiosity about how data pipelines work end-to-end, not just the code but why the data looks the way it does
• Comfortable being reviewed and iterating quickly on feedback
• Confident asking questions and pushing for clarity rather than staying blocked
• Exposure to dbt or another SQL transformation framework
• Familiarity with Git/GitHub and PR-based workflows
• Some exposure to AWS or another cloud environment
• Experience writing or maintaining automated tests
• Interest in AI-assisted coding tools (we use Claude Code day-to-day)
• Any exposure to marketing, ecommerce, or advertising data

Responsibilities

• Write and maintain dbt models and SQL as part of our production data engineering pipelines
• Help build and maintain Python-based data ingestion services
• Contribute to pipelines that move data from ingestion through transformation to the APIs that serve it
• Write clean, tested code and get comfortable with code review from both sides
• Debug data quality issues systematically, learning to trace problems back through the pipeline
• Get exposure to our cloud infrastructure and understand how it supports the pipelines you work on
• Work with AI agents as part of our AI-first operating model
• Collaborate with data engineers, analysts, and product stakeholders to understand what the data needs to support

Skills

SQL

Python

Curiosity about data pipelines

Comfortable with feedback

Communication

Education

Bachelor's degree in Computer Science, Data Engineering, Mathematics or equivalent

Tools

dbt

Git/GitHub

AWS

Automated testing

Claude Code

Job description

Fospha, the measurement system used by leading enterprise retail and ecommerce brands, builds data pipelines that transform marketing spend and performance data into clear, actionable insights. This early-career role focuses on core data engineering workstreams, including large-scale SQL/dbt transformation pipelines, data ingestion services, and APIs serving insights.

You’ll learn by shipping real production code from day one, work with data engineers, analysts and AI agents in an AI-first