Company Description
Experian is a global data and technology company that drives opportunities for people and businesses around the world. We operate in several markets, such as financial services, healthcare, automotive, agribusiness, insurance, among others. Experian invests in people and in new advanced technologies to unleash the power of data. We have an amazing team of 25,200 employees in 32 countries.
Our uniqueness is valuing yours. Experian's culture, centered on people, inclusive and driven by purpose, is recognized by various awards — including World's Best Workplaces™ 2025 (Fortune Global Top 25) and Great Place To Work™ in 26 countries, among others. Check out Experian Life on social media or explore our careers site to understand why. Experian is also proud to be an employer that promotes equal opportunities and affirmative action.
Job Description
Acting as DBA/DBRE, responsible for ensuring the reliability, availability, performance, scalability and financial efficiency of database environments, serving as the technical reference for decisions on architecture, observability, governance and the evolution of data platforms.
What we expect from you:
Technical expertise:
- Solid experience with PostgreSQL, MongoDB and SQL Server.
- Advanced knowledge of administration, troubleshooting and optimization of databases in critical, high-availability environments.
- Experience with cloud environments and distributed architectures.
- Experience with Database Reliability Engineering (DBRE) practices, observability and automation.
Main responsibilities:
Performance and optimization:
- Diagnose and resolve performance issues, analyzing execution plans, locks, resource contention, wait events and I/O consumption.
- Define and manage indexing strategies, ensuring efficiency and scalability of queries.
- Carry out advanced tuning of databases, adjusting memory, parallelism, cache, checkpoint and other critical configuration parameters.
- Review and optimize procedures, functions, triggers and other database objects.
- Implement partitioning, retention and data purge strategies.
- Define performance metrics and indicators, monitoring the evolution of environments and preventing regressions.
Reliability and high availability:
- Design and manage high-availability, replication and failover solutions.
- Ensure robust backup, restore and disaster recovery (Disaster Recovery) policies.
- Validate RPO and RTO metrics through periodic testing.
- Conduct database migrations and schema changes with minimal impact or zero downtime.
- Respond to critical incidents, conducting root cause analyses and implementing preventive actions.
Observability:
- Structure and evolve database monitoring through metrics, dashboards and intelligent alerts.
- Define and track reliability indicators such as availability, latency, resource utilization and replication lag.
- Promote a data-driven culture and continuous improvement of operations.
Architecture and data modeling: Support development squads in defining the best relational and non-relational modeling strategies.
- Take part in decisions on technology choice, access patterns and evolution of the data architecture.
- Ensure good practices in governance, versioning and change management.
Efficiency and cost management
- Identify opportunities to optimize infrastructure and resource consumption.
- Carry out capacity analyses, rightsizing and utilization of database environments.
- Connect consumption, utilization and cost metrics to support FinOps initiatives and operational efficiency.
Security and compliance
- Ensure the application of least-privilege principles and secure access management.
- Implement good practices for data protection, encryption and credential management.
- Ensure compliance with LGPD, internal audits and regulatory requirements.
Knowledge sharing
- Act as the technical reference for development, SRE and infrastructure teams.
- Support the training of more junior professionals.
- Create documentation, runbooks and operational standards that promote autonomy, scalability and sustainability of operations.
Differentiators
- Experience with AWS RDS, Aurora, DocumentDB or cloud-managed databases.
- Knowledge of Datadog, observability and SRE.
- Experience in mission-critical environments and high transactional volume.
- Knowledge of automation, CI/CD and infrastructure as code.
- Experience in technology companies, fintechs, payment providers or digital platforms.
Qualifications
- Solid experience of 5+ years as a DBA, including at least 3 years working in critical, high-availability production environments.
- Advanced knowledge of PostgreSQL, including MVCC, autovacuum, bloat management, execution plan analysis, logical and physical replication, performance tuning and monitoring.
- Advanced knowledge of MongoDB, with experience in replica sets, high-availability strategies, document modeling, query optimization, indexes and the aggregation framework.
- Solid experience with SQL Server, including Query Store, Always On, performance analysis, query optimization, statistics, T-SQL and administration of production environments.
- Experience with database services on AWS, such as RDS, Aurora and DocumentDB, plus CloudWatch, IAM, VPC, KMS, Secrets Manager and backup and recovery strategies.
- Advanced SQL proficiency and interpretation of execution plans across different database engines.
- Experience with automation and building routines using Python, Bash or PowerShell.
- Experience with code versioning using Git and collaborative development workflows.
Differentiators:
- Knowledge of Terraform and Infrastructure as Code (IaC) practices.
- Experience with Datadog, especially Database Monitoring and observability.
- Experience with database versioning and migration tools such as Flyway, Liquibase or Alembic.
- Knowledge of Kubernetes environments and containerized applications.
- Experience in fintechs, payment providers, banks or highly regulated environments.
- Participation in modernization projects, cloud migration or migration between different database engines.
- Knowledge of SRE (Site Reliability Engineering) practices and Reliability Engineering.
Behavioral Profile
- Strong sense of ownership, autonomy and ability to solve complex problems.
- Analytical, data-driven profile for decision-making.
- Excellent communication skills and ability to translate technical topics for different audiences.
- Mindset geared toward automation, continuous improvement and operational efficiency.
- Experience working in critical scenarios, focused on stability and structured incident resolution.
- Commitment to documentation, knowledge sharing and developing good practices.
- Ability to influence technical decisions through evidence, metrics and strategic vision.
Additional Information
Serasa Experian is much more than you imagine. With the purpose of building a better future, expanding opportunities for people and businesses, in Brazil we are more than 4 thousand people working across various teams and specialties. Here, every skill and diversity complements each other, and you can work on what you love most. We are committed to building an inclusive culture and an environment where people can balance their careers with their commitments and personal interests, valuing well-being.
We are very dedicated to being one of the best and most innovative companies to work for in the country, enabling amazing experiences and careers for our people. Our strong people-first approach is recognized externally through various market certifications: we were awarded by Great Place To Work™ in 24 countries and by the international Top Employers certification, in addition to being recognized as one of the best companies for young professionals and having a 4.6 rating on Glassdoor. Each recognition tells us we are on the right path, providing an increasingly better work environment for our talent.
Come be #TimeVeloz!
Let's grow together! We want to truly contribute to the growth of those around us. Our Purpose? Improving lives, sharing dreams and achievements.