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Senior Database Engineer

8x8 is seeking a Senior Database Engineer to join our engineering team responsible for the architecture reliability and performance of our database infrastructure across on-premises AWS and OCI environments. This is a senior technical role requiring deep expertise in relational database systems high-availability architectures performance engineering and infrastructure automation at scale.

You will serve as a technical leader and subject matter expert for database platforms driving architectural decisions mentoring junior engineers and partnering with development and infrastructure teams to ensure database systems deliver the highest levels of availability performance and data integrity across a globally distributed environment. The ideal candidate has a track record of operating mission-critical database infrastructure is comfortable influencing technical direction and is passionate about building resilient self-healing data platforms.

Responsibilities

• Lead the architecture management and optimization of Oracle 19c RAC MySQL 8 and PostgreSQL database systems across on-premises AWS and OCI cloud environments.

• Define and drive database standards best practices and operational runbooks across the organization.

• Own database upgrade and migration strategies for Oracle and MySQL ensuring minimal downtime and risk mitigation across all environments.

• Lead advanced database troubleshooting root cause analysis and performance engineering across Oracle MySQL PostgreSQL HAProxy and Keepalived.

• Architect and maintain database replication topologies including master-slave master-master and cross-region configurations for disaster recovery.

• Design and implement automation for database provisioning patching scaling and failover using Python Terraform and Ansible.

• Own backup and recovery strategy using RMAN mysqldump pgdump and point-in-time recovery ensuring RPO/RTO targets are met and regularly tested.

• Implement and maintain database observability including monitoring alerting dashboards and capacity forecasting using Grafana CloudWatch or equivalent platforms.

• Collaborate with application development teams on schema design query optimization indexing strategies and capacity planning.

• Mentor and guide junior database engineers conducting code and architecture reviews.

• Participate in on-call rotations as a senior escalation point for critical database incidents.

• Evaluate emerging database technologies and make recommendations for adoption where appropriate.
  

Required Skills & Experience

• 7 years of hands-on experience in database engineering or DBA roles with at least 3 years in a senior or lead capacity.

• Expert-level knowledge of Oracle 19c RAC administration including RMAN Data Guard patching and advanced query optimization.

• Deep experience with MySQL 8 administration replication architectures (master-slave master-master GTID-based) and performance tuning at scale.

• Strong working knowledge of PostgreSQL administration replication and performance tooling.

• Proven experience designing and operating high-availability and disaster recovery database architectures in production.

• Strong proficiency in Linux systems administration (Ubuntu/RHEL-based) and shell scripting.

• Extensive experience with automation and infrastructure-as-code: Python Terraform Ansible.

• Solid understanding of high-availability components: HAProxy Keepalived or equivalent load balancing and failover solutions.

• Experience with Git-based workflows CI/CD practices and database change management processes.

• Demonstrated ability to lead incident response perform root cause analysis and drive post-incident improvements.

• Excellent communication skills with the ability to influence technical decisions and collaborate effectively across time zones in a distributed team.
  

Nice to Have

• Experience with AWS database services (RDS Aurora DMS) and OCI database offerings.

• Exposure to MSSQL Server administration.

• Experience with database migration strategies across cloud providers and on-premises environments.

• Hands-on experience with Grafana monitoring dashboards alerting rules and database metrics integration.

• Experience with NoSQL or caching technologies (Redis DynamoDB Elasticsearch).

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