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Weng Eric

@wengeric

Senior Database Reliability Engineer at Exelon Corporation, maintaining PostgreSQL HA clusters and production reliability for utility applications.

United States

Message

At Exelon Corporation, I support production PostgreSQL databases for utility applications, including customer billing and enterprise data warehousing. I administer high-availability clusters, maintain disaster recovery environments, and tune database performance.

At Federal Data Systems, I supported migrations of Oracle and PostgreSQL workloads to Amazon RDS for PostgreSQL in AWS GovCloud, using ora2pg, AWS DMS, and automation scripts. Earlier, at Zynx Health, I optimized content-export queries, cutting runtime 40%.

Experience

Work history, roles, and key accomplishments

Current

Senior Database Reliability Engineer

Current

Exelon Corporation

Mar 2022 - Present (4 years 7 months)

Supported a diverse portfolio of production PostgreSQL databases on Microsoft Azure VMs across critical utility applications, including enterprise data warehousing, customer billing, and document processing services. Responsible for database reliability, high availability, disaster recovery, performance optimization, and operational automation.

PostgreSQL Azure Pacemaker Streaming Replication Disaster Recovery Performance Optimization Prometheus Grafana Python BASH Terraform Ansible Kafka Oracle GoldenGate MongoDB

Senior Database Engineer

Federal Data Systems

Dec 2018 - Feb 2022 (3 years 2 months)

Supported database modernization for case-management, litigation-support, and public-facing applications, migrating on-premises Oracle and PostgreSQL workloads to Amazon RDS for PostgreSQL in AWS GovCloud. Developed Terraform modules and Ansible automation for database infrastructure provisioning and configuration management.

PostgreSQL Amazon RDS AWS GovCloud Oracle Ora2pg AWS DMS Python Terraform Ansible Prometheus Grafana PgBackRest

PostgreSQL Database Administrator

Larsen & Toubro Infotech

Dec 2017 - Dec 2018 (1 year)

Member of the PostgreSQL DBA team supporting payment processing and treasury applications in a highly regulated banking environment. Implemented streaming replication, automated failover, and connection pooling to improve availability and performance.

PostgreSQL Streaming Replication Repmgr PG Bouncer Barman WAL Archiving Performance Optimization Ansible Python BASH RHEL TLS SOX PCI DSS

PostgreSQL Database Administrator

Joint Pacific

Feb 2015 - Dec 2016 (1 year 10 months)

Contract DBA for Zynx Health (Hearst Health), a provider of evidence-based clinical decision support content. Administered PostgreSQL databases, configured streaming replication, and optimized query performance to cut content-export job runtime by 40%.