Sezzle

Senior Database Reliability Engineer

Sezzle
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5 days ago
Bogotá, ColombiaSenior

Responsibilities

  • Design, build, and maintain shared database platform components, libraries, migration tooling, safety checks, and developer-facing abstractions.
  • Establish reliable and scalable database connection, transaction, migration, schema, indexing, and query-performance patterns across environments.
  • Build automation and internal tooling for safer, repeatable database operations and developer self-service.
  • Architect and improve AWS RDS/Aurora MySQL infrastructure, including replicas, backups, failover, parameter groups, monitoring, and capacity planning.
  • Investigate production database issues using application telemetry, metrics, logs, query plans, traces, and cloud infrastructure data.
  • Create dashboards, alerts, SLOs, SLIs, runbooks, and operational-readiness checks for database-backed services.
  • Improve backup validation, restore testing, disaster recovery, failover readiness, and business continuity.
  • Partner with application, infrastructure, security, compliance, and engineering teams on reliability, scalability, access controls, auditability, encryption, secrets management, and least-privilege controls.
  • Mentor engineers on database design, query performance, safe migrations, operational readiness, and production debugging.
  • Use automation and AI tooling to improve migration review, query analysis, incident investigation, documentation, and developer productivity.

Requirements

  • 6+ years of professional software engineering, infrastructure engineering, database engineering, SRE, or platform engineering experience.
  • Production software engineering ability in at least one language such as Go, Python, or TypeScript.
  • Experience building production-quality internal tools, libraries, frameworks, services, or platform components used by other engineers.
  • Deep hands-on experience with MySQL and/or PostgreSQL in high-availability production environments.
  • Strong knowledge of connection pooling, transactions, isolation levels, retries, timeouts, deadlocks, locking, migrations, and query execution.
  • Experience with shared database access patterns, ORM wrappers, migration frameworks, or developer-facing database tooling.
  • Hands-on AWS RDS/Aurora experience covering provisioning, upgrades, replicas, backups, failover, monitoring, parameter tuning, and troubleshooting.
  • Experience with database connection management technologies such as RDS Proxy, PgBouncer, ProxySQL, or application-level pooling.
  • Ability to analyze database performance using query plans, indexes, slow query logs, wait events, locks, metrics, and application traces.
  • Experience designing safe production database migration processes and observability for database-backed applications.
  • Experience with infrastructure-as-code and CI/CD tooling such as Terraform, GitLab CI/CD, Kubernetes, or Helm.
  • Ability to influence teams through design reviews, documentation, technical standards, and implementation.
  • Demonstrated experience working with Claude or equivalent large language model tools is required.
  • Bachelor’s degree in Computer Science.
  • Preferred experience includes Golang development, platform capabilities for microservices, database libraries and SDKs, fintech or high-volume transactional systems, compliance-sensitive environments, database governance, distributed systems, operational automation, observability tooling, and supporting data stores such as Elasticsearch.

Benefits

  • Full-time remote role.
  • Company culture includes activities and interests such as music, yoga, cycling, cooking, golf, dogs, and rock climbing.

Tech Stack

AWSDatadogElasticsearchGitGitLab CI/CDGoGrafanaHelmKubernetesMySQLPostgreSQLPrometheusPythonReactReact NativeTerraformTypeScript

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About Sezzle

201-500 employees
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