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