Senior Database Administrator (PostgreSQL)

Senior Database Administrator (PostgreSQL)

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Job Description

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CoStar Group serves up over 1.8PB of data from more than 800 SQL Servers that span four On-Premise data centers, two continents, and six different time zones and we are expanding to AWS Cloud solution rapidly and start to support Aurora MySQL, PostgreSQL (Aurora and RDS), DynamoDB, Databricks, and other DB engines on the cloud. Our highly motivated, extremely talented DBA group is looking for an exceptionally bright Senior Database Administrator both On-prem and AWS Cloud that will help the company continue to grow. If you are passionate about automating and programming to support databases, this is your job!. Our goal is to provide an exceptional experience for our customers through continued development, refinement, and improvement of our industry-leading applications.

We are seeking a Senior PostgreSQL Database Engineer with deep experience managing enterprise-scale relational systems, particularly PostgreSQL, and a strong background in Microsoft SQL Server. This role is ideal for an engineer ready to expand their expertise in cloud-native technologies while maintaining and evolving a large-scale PostgreSQL platform.

CoStar Group is the leading data provider of Multi Family and Commercial Real Estate data in an industry valued at over 15 trillion dollars. If you are seeking a challenge that pushes your limits, have a strong desire to delight your customers, want to work with the latest technologies and are looking for responsibilities beyond that a typical DBA, come to work for us today

Duties and Responsibilities:

• Design, deploy, monitor, and maintain PostgreSQL databases in AWS

• Administer PostgreSQL replication (logical and streaming), backup/recovery, performance tuning, upgrades, partitioning, and index strategies.

• Support high-traffic applications with large data volumes, optimizing PostgreSQL for concurrency, throughput, and durability.

• Leverage Python and PowerShell for automation, scripting, and operational tooling. Experience with Terraform, CloudFormation, and TFS/Visual Studio Database Projects is a strong plus.

• Collaborate with DevOps and engineering teams to build and support scalable, resilient infrastructure using infrastructure as code (IaC) and CI/CD pipelines.

• Use monitoring tools like CloudWatch, Kibana, DataDog, or pg_stat_statements to identify and resolve performance and availability issues.

• Apply enterprise practices including version control for database artifacts, structured change management, and documentation.

• Support AWS database platforms such as DynamoDB, Aurora MySQL, Aurora PostgreSQL, MS SQL and contribute to cloud data architecture strategies.

• Ensure effective disaster recovery (DR) and high availability (HA) strategies are in place

• Work across both Linux and Windows Server environments, ensuring compatibility AND stability for all data workloads

• To be placed on on-call rotation for a week every 3 months and respond to system alerts

Requirements:

• 3-5+ years of hands-on experience iwth PostgreSQL in large scale production environments

• Experience with cloud-native PostgreSQL (e.g., AWS RDS, Aurora, Azure Database for PostgreSQL

• Strong understanding of PostgreSQL internals, query planning, indexing strategies, partitioning, sharding, and performance optimization.

• Proficiency with cloud platforms, especially AWS (Aurora PostgreSQL, RDS, EC2)

• Experience with database migrations, cloud-native data services, and automation frameworks.

• Familiarity with NoSQL systems such as DynamoDB, Redis, or Elasticsearch.

• Experience with data warehousing platforms like Snowflake, Databricks or similar is desirable

• Strong scripting skills in Python, Bash, or PowerShell.

• Expertise with pg_dump/pg_restore.

• Experience working with Linux-based environments.

• Excellent communication and documentation skills.

• Excellent work ethic and willingness to put in significant extra time as needed

• Experience with other RDBMS such as MySQL and MS SQL.

• Bachelor's degree required. Relevant equal work experience may be considered in lieu of a degree.

Nice to have:

• Experience with PostgreSQL clustering and failover

• Experience with CI/CD and Infrastructure-as-Code practices

• Familiarity with cloud migration tools like AWS DMS.

• AWS Certified Solutions Architect or AWS Database Specialty certification is a strong plus.

• Exposure to additio