PySpark Developer

Data & AI - LLM Model Developer (PySpark & AWS)
Contract | UK Fully Remote | Inside IR35

We're supporting a large-scale data and AI transformation programme. We are looking for an experienced Data & AI - LLM Model Developer with advanced PySpark and AWS expertise to help modernise complex, Legacy data platforms.

This is a hands-on contract role where you'll play a key part in SAS-to-PySpark migration, building scalable, cloud-native data pipelines and delivering production-ready solutions in a regulated environment.

What you'll be doing

• Designing, developing, and optimising PySpark-based data pipelines on AWS

• Converting Legacy SAS workloads to PySpark, using automated migration tools and manual optimisation

• Refactoring and stabilising existing data workflows into modern cloud architectures

• Optimising Spark workloads for performance, scalability, and cost efficiency

• Working closely with engineers and stakeholders to deliver reliable, high-quality data solutions

Essential skills

• PySpark - P3 (Advanced): strong hands-on experience building production-grade Spark solutions

• AWS - P3 (Advanced): EMR, Glue, S3, Athena (and related services)

• Experience using automated migration tools for large-scale code or data modernisation

• Strong SQL and data engineering fundamentals

• Experience working with distributed data processing and cloud platforms

Nice to have

• Exposure to SAS or Legacy analytics platforms

• Experience in banking or financial services

• CI/CD, Git-based workflows, or DevOps tooling

Why this role?

• Fully remote (UK-based) contract

• Long-term transformation programme with real technical depth

• Modern cloud and data stack

• Outside-the-box problem solving, not just maintenance work