Contract - Senior Data Engineer (Snowflake Cortex)

Contract - Senior Data Engineer (Snowflake Cortex)

Rate: £(Apply online only) per day, Outside IR35

Location: London (2 days per week, on-site)

Start Date: Monday 9th November 2026

Length: 6 months initially, with a chance of extension.

Interview Stages: 1-stage over Teams, with joint company owners (CEO and CTO)

Opus have partnered with a rapidly growing HealthTech start-up who's recently received funding. They're on a mission to build a next-gen data platform for processing millions of confidential patient records and clinical documents securely, and at scale. The successful Data Engineer will play a pivotal part in helping to design and deliver AI-enabled document processing pipelines using Snowflake Cortex, helping to extract valuable insights from unstructured healthcare data including patient records, referral letters, clinical notes, PDFs and compliance documentation.

The role:

• Design and build scalable data pipelines in Snowflake (Snowpipes)
• Design and develop cloud-native data platforms on AWS and Snowflake
• Build resilient document ingestion pipelines for healthcare data
• Develop ETL frameworks to transform raw clinical data into analytics ready datasets
• Build secure and compliant solutions that align with GDPR and healthcare data governance standards

Stack:

Snowflake | Snowflake Cortex | AWS - S3, Glue, Lambda, Step Functions | Python | SQL | dbt | Airflow| Terraform | Docker | GitHub CI/CD

Requirements

• Must have advanced SQL and Python + experience delivering modern cloud-based data platforms
• Must have enterprise level snowflake experience
• Strong AWS data engineering experience (Glue preferred)

Nice to have:

• Relevant HealthTech / MedTech experience
• Snowflake Cortex experience
• Snowpro / AWS Certifications
• Experience handling sensitive data / Knowledge of GDPR, NHS DSPT or healthcare compliance frameworks