L3 Database Administration

Role: L3 Database Administrator (Snowflake / PostgreSQL / Greenplum)
Location: Glasgow (Hybrid – 3 days onsite per week)
Type: Contract (12 months)
Industry: Financial Services (Confidential Client)
Rate: £425 per day (Inside IR35)

We are seeking an experienced L3 Database Administrator to join a large-scale enterprise data environment within the financial services sector. The role focuses on administration, optimisation, and support of PostgreSQL, Greenplum, and Snowflake platforms in a complex, data-intensive environment.

This is a hands-on technical role requiring deep expertise across database administration, performance tuning, data engineering support, and cloud-based data platforms.

Key Responsibilities

• Administer, maintain, and support PostgreSQL, Greenplum, and Snowflake database environments
• Manage database provisioning, upgrades, patching, and lifecycle activities
• Design and support scalable data models and architectures within Snowflake
• Work with data ingestion pipelines using tools such as Informatica or Talend
• Manage data migration activities using tools such as gpcopy with minimal downtime
• Perform performance tuning, query optimisation, and database health checks
• Handle database backup, recovery, and high availability strategies (including Patroni-based setups)
• Monitor and manage database bloat, statistics, and system performance
• Support troubleshooting using Greenplum utilities such as gpload, PXF, and GP-related tooling
• Automate database operations using Shell scripting, Python, or Ansible
• Work with structured and semi-structured data formats (JSON, XML, CSV)
• Ensure security, compliance, and operational best practices across environments
• Collaborate with engineering teams on ETL processes and data workflows
• Support cloud-based deployments across AWS, Azure, or GCP environments

Essential Skills

• Strong DBA experience across PostgreSQL, Snowflake, and Greenplum
• Advanced SQL and complex query writing
• Experience with PostgreSQL administration (provisioning, upgrades, maintenance)
• Greenplum expertise including performance tuning, gpcopy, and system optimisation
• Snowflake experience including roles, schemas, data modelling, and architecture
• Strong scripting skills in Shell, Python, or Ansible
• Experience with Patroni and streaming replication for high availability
• Strong understanding of data pipelines and ETL concepts

Desirable Skills

• Experience with ETL tools such as Informatica or Talend
• Cloud platform experience (AWS / Azure / GCP)
• Exposure to large-scale enterprise data environments