[Hiring] Senior Database Engineer @1Kosmos

Role Description

Are you ready to shape the future of authentication? Join 1Kosmos and help lead the next wave in identity assurance and passwordless innovation. We are looking for a Sr Database Engineer to own the day-to-day operation of our database estate. Our production services run on MongoDB and Amazon DocumentDB, with PostgreSQL and DynamoDB alongside them, and our reporting data lands in Apache Iceberg tables on S3 that we query through Amazon Redshift. You will be the owner of everything that keeps that estate healthy and moving:

• Pre-deployment migrations
• Upgrades
• Query performance
• Customer data requests
• Backup and recovery
• Incident response

This is an operations-first role. You will work alongside our senior database architect, who leads our data platform projects, and take full ownership of the run work so the whole team can move faster. We want someone who thinks before they change something: you read the release notes before a MongoDB upgrade and know which application queries it could break, and you find the slow query and fix the index before a customer notices. This is an on-call role.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field (or equivalent experience)
• 5+ years of experience administering production databases
• Hands-on production experience with MongoDB or Amazon DocumentDB, including replica sets, indexing, TTL, and upgrades
• Hands-on production experience with PostgreSQL
• Strong SQL and experience with Amazon Redshift or a comparable analytical query engine (Athena, Trino, Snowflake, or BigQuery)
• A track record of production database upgrades, including assessing application impact before the upgrade
• Index design and query tuning driven by profiler and explain plan output
• Experience running schema and data migrations as part of a release process
• Backup, restore, and replication in production, with recovery that has actually been tested
• Strong experience with AWS database and supporting services (RDS or Aurora, DocumentDB, DynamoDB, S3, IAM, Secrets Manager, CloudWatch)
• Proficiency in Python or Bash for automation
• Experience with Git and CI-based change workflows
• Experience handling PII and customer data under SOC 2, GDPR, or similar requirements
• A habit of verifying: you confirm the result of a change rather than assuming it, and you write the runbook before it is needed
• Willingness to participate in an on-call rotation
• Remote, based in India

Requirements

• Experience with Apache Iceberg, AWS Glue, Athena, or other open table formats on S3
• Experience with Liquibase or Flyway specifically
• Experience with MongoDB Atlas
• Exposure to Kafka or change data capture pipelines
• Familiarity with Kubernetes and Terraform (enough to read a plan and run database tooling in a cluster)
• Experience in identity, fraud prevention, or another regulated SaaS product
• MongoDB or AWS database certifications

Benefits

• Cutting-Edge Tech Stack: Build with decentralized identity protocols, FedRamp High, FIDO2-certified cryptography, and NIST-compliant biometric systems
• Accelerated Growth: Receive annual stipends for certifications and attend key conferences
• Ownership & Impact: We move fast and will enable you to make a big impact with large customers in US & Canada
• Flexibility First: Unlimited PTO and fully remote work