Senior DB Reliability Engineer — Scale & Secure Data

NEPSE Trading; Argentina; Presencial; ARS 83.613.000 - 158.865.000; Jornada completa

Descripción de la vacante

Sezzle is seeking a Senior Database Reliability Engineer to design, build, and scale the database platform across Sezzle’s applications. You will own end-to-end reliability, security, and performance for databases in production, staging, and development environments.

The role requires 6+ years of professional software or platform experience and strong coding skills in Go, Python, or TypeScript. You will collaborate with multiple teams to drive automation, standards, and best practices for

Formación

• 6+ years of professional software engineering, infrastructure engineering, database engineering, SRE, or platform engineering experience.
• Strong software engineering ability in at least one production programming language such as Go, Python, or TypeScript.

Responsabilidades

• Design, build, and maintain shared database platform components used by Sezzle applications, such as database connection packages, database client libraries, migration tooling, safety checks, query standards, and developer-facing abstractions.
• Establish reliable, scalable patterns for how Sezzle services connect to and interact with relational databases across production, staging, and development environments.
• Partner with backend engineering teams to improve database usage in application code, including connection lifecycle, transaction handling, retries, timeouts, pooling, query patterns, and migration workflows.
• Build automation and internal tooling that makes database operations safer, more repeatable, and less dependent on manual intervention.
• Define and enforce engineering standards for database access, schema design, migrations, indexing, query performance, connection management, and operational readiness.
• Architect and improve database infrastructure across AWS RDS/Aurora MySQL, PostgreSQL, RDS Proxy, read replicas, backups, failover, parameter groups, monitoring, and capacity planning.
• Lead database reliability initiatives that reduce operational risk, improve performance, and help Sezzle scale safely.
• Review application designs and database changes early in the development lifecycle to ensure reliability, scalability, maintainability, and security are built in from the start.
• Build guardrails for database migrations , including automated checks, rollback expectations, schema review workflows, migration observability, and production safety controls.
• Improve developer self-service for database provisioning, access, schema management, local development, testing, and observability.
• Investigate production database issues by combining application telemetry, database metrics, logs, query plans, traces, and cloud infrastructure data.
• Identify and fix systemic database problems , not just symptoms — including bad access patterns, unsafe migrations, inefficient queries, connection storms, lock contention, replication lag, and capacity bottlenecks.
• Create and maintain high-signal dashboards, alerts, SLOs, SLIs, runbooks, and operational readiness checks for database-backed services.
• Drive improvements in database backup validation, restore testing, disaster recovery, failover readiness, and business continuity.
• Work with security and compliance teams to improve database access controls, auditability, encryption, secrets management, least privilege, and PCI/SOC 2 aligned controls.
• Mentor engineers on database design, query performance, safe migrations, operational readiness, and production debugging.
• Use automation and AI tooling where appropriate to improve migration review, query analysis, incident investigation, documentation, and developer productivity.

Conocimientos

Database design

SRE

Platform engineering

Cloud services

CI/CD

Herramientas

Go

Python

TypeScript

AWS RDS/Aurora MySQL

PostgreSQL

RDS Proxy

Descripción del empleo

Sezzle is seeking a Senior Database Reliability Engineer to design, build, and scale the database platform across Sezzle’s applications. You will own end-to-end reliability, security, and performance for databases in production, staging, and development environments.

The role requires 6+ years of professional software or platform experience and strong coding skills in Go, Python, or TypeScript. You will collaborate with multiple teams to drive automation, standards, and best practices for