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Senior Database Reliability Engineer (DBRE)

Okta · Chicago, IL · Tech Ops-610

Posted Sep 21, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

This role is about building resilient infrastructure, not just administering it. Tell me about something you automated that removed a recurring manual task.

What they are checking: Whether they think like an engineer who builds tools, which the posting puts ahead of hands-on administration.

Tell me about a database incident you were part of. What was the root cause and what changed afterward?

What they are checking: Whether they learn from incidents and push for lasting fixes instead of stopping at recovery.

What would you do

A primary fails at 2 a.m. Talk me through what your failover setup does and what you check before calling it healthy.

What they are checking: Whether they understand split-brain, replication lag and data loss risks during a real failover.

An application team wants to add a column with a default to a billion-row table. What do you tell them?

What they are checking: Whether they can steer developers away from locking schema changes while still unblocking their work.

About the work

Walk me through how you'd design a highly available PostgreSQL cluster for a mission-critical service. When do you use physical versus logical replication?

What they are checking: Whether they know the tradeoffs of each replication mode and can apply them to failover, upgrades and data movement.

A query that was fast yesterday is now slow. How do you find out why?

What they are checking: Whether they can work through EXPLAIN plans, statistics, bloat and locking in a disciplined order.

How do you handle vacuum and bloat on large, high-write Postgres tables?

What they are checking: Whether they understand MVCC well enough to keep big tables healthy without hurting live traffic.

How would you plan a major version upgrade of Postgres with near-zero downtime?

What they are checking: Whether they can plan risky changes with rehearsal, rollback and clear cutover steps.

What differences between MySQL and PostgreSQL have bitten you in production?

What they are checking: Whether their MySQL experience is real and grounded in operational lessons rather than surface knowledge.

How do you decide what to monitor and alert on for a database fleet?

What they are checking: Whether they alert on symptoms that affect users and avoid noisy alerts that train people to ignore pages.

How do you approach backups and point-in-time recovery, and how do you know your restores actually work?

What they are checking: Whether they test recovery regularly, since an untested backup is not a real backup.

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The full job description

As published by Okta.

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. Senior Database Reliability Engineer (DBRE)  Experience Level: Mid–Senior (4+ years PostgreSQL experience) About the Role We are looking for a highly skilled Database Reliability Engineer (DBRE) with deep expertise in PostgreSQL at scale and solid experience with MySQL. In this role, you will design, operationalize, and optimize the data persistence layer that powers our large-scale, mission-critical systems. You will work closely with SRE, Platform, and Engineering teams to ensure performance, reliability, automation, and operational excellence across our database environment. This is a hands-on engineering role focused on building resilient data infrastructure, not just administering it. Responsibilities: Architecture, Reliability & Performance • Design, implement, and operate highly available PostgreSQL clusters (physical replication, logical replication, sharding/partitioning, failover automation). • Optimize query performance, indexing strategies, schema design, and storage engines. • Perform capacity planning, growth forecasting, and workload modeling. • Own high-availability strategies including automatic failover, multi-AZ/multi-region setups, and disaster recovery. Automation & Tooling • Develop automation for any and all tasks including but not limited to: provisioning, configuration, backups, failovers, vacuum tuning, and schema management using tools such as Terraform, Ansible, Kubernetes Operators, or custom tooling. • Build monitoring, alerting, and self-healing systems for PostgreSQL and MySQL. Operations & Incident Response • Lead response during database incidents—performance regressions, replication lag, deadlocks, bloat issues, storage failures, etc. • Conduct root-cause analysis and implement permanent fixes. Cross-Functional Collaboration • Partner with software engineers to review SQL, optimize schemas, and ensure efficient use of PostgreSQL features. • Provide guidance on database-related design patterns, migrations, version upgrades, and best practices. Required Qualifications • 4 plus  years of hands-on PostgreSQL experience in high-volume, distributed, or large-scale production environments. • Strong knowledge of PostgreSQL internals (WAL, MVCC, bloat/ vacuum tuning, query planner, indexing, logical replication). • Production experience with MySQL (InnoDB internals, replication, performance tuning). • Advanced SQL and strong understanding of schema design and query optimization. • Experience with Linux systems, networking fundamentals, and systems troubleshooting. • Experience building automation with Go or Python. • Production experience with monitoring tools (Prometheus, Grafana, Datadog, PMM, pg_stat_statements, etc.). • Hands-on experience with cloud environments (AWS or GCP). Preferred/Bonus Qualifications • Experience with PgBouncer, HAProxy, or other connection-pooling/load-balancing layers. • Exposure to event streaming (Kafka, Debezium) and change data capture. • Experience supporting 24/7 production environments with on-call rotation. • Contributions to open-source PostgreSQL ecosystem. This position requires the ability to access federal environments and/or have access to protected federal data.  As a condition of employment for this position, the successful candidate must be able to submit documentation establishing U.S. Person status (e.g. a U.S. Citizen, National, Lawful Permanent Resident, Refugee, or Asylee. 22 CFR 120.15) upon hire. Requires in-person onboarding and travel to our San Francisco, CA HQ office or our Chicago office during the first week of employment.   #LI-Hybrid #LI-LSS1 P6805_3362886 Below is the annual base salary range for candidates located in San Francisco Bay Area. Your actual base salary will depend on factors such as your skills, qualifications, experience, and work location. In addition, Okta offers equity (where applicable), bonus, and benefits, including health, dental and vision insurance, 401(k), flexible spending account, and paid leave (including PTO and parental leave) in accordance with our applicable plans and policies. To learn more about our Total Rewards program please visit: https://rewards.okta.com/us .    The annual base salary range for this position for candidates located in the San Francisco Bay area is between: $160,000 — $220,000 USD Below is the annual base salary range for candidates located in California (excluding San Francisco Bay Area), Colorado, Illinois, New York and Washington. Your actual base salary will depend on factors such as your skills, qualifications, experience, and work location. In addition, Okta offers equity (where applicable), bonus, and benefits, including health, dental and vision insurance, 401(k), flexible spending account, and paid leave (including PTO and parental leave) in accordance with our applicable plans and policies. To learn more about our Total Rewards program please visit: https://rewards.okta.com/us .    The annual base salary range for this position for candidates located in California (excluding San Francisco Bay Area), Colorado, Illinois, New York, and Washington is between: $143,000 — $196,000 USD The Okta Experience • Supporting Your Well-Being   • Driving Social Impact  • Developing Talent and Fostering Connection + Community We are intentional about connection. Our global community, spanning over 20 offices worldwide, is united by a drive to innovate. Your journey begins with an immersive, in-person onboarding experience designed to accelerate your impact and connect you to our mission and team from day one. Okta is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, ancestry, marital status, age, physical or mental disability, or status as a protected veteran. We also consider for employment qualified applicants with arrest and convictions records, consistent with applicable laws. If reasonable accommodation is needed to complete any part of the job application, interview process, or onboarding please  use this Form to request an accommodation. Notice for New York City Applicants & Employees: Okta may use Automated Employment Decision Tools (AEDT), as defined by New York City Local Law 144, that use artificial intelligence, machine learning, or other automated processes to assist in our recruitment and hiring process. In accordance with NYC Local Law 144, if you are an applicant or employee residing in New York City, please  click here to view our full NYC AEDT Notice.

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