Senior Backend Engineer – Java/Kotlin

Itaú Unibanco

Backend Senior Developer at Itaú developing scalable and secure credit solutions. Collaborating on architecture, DevOps practices, and AI integration for enhanced product quality.

Posted 5/8/2026full-timeSão Paulo • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

AWSCloudEC2GradleHibernateJavaJUnitKafkaKotlinMavenMockitoSpring

About the role

Key responsibilities & impact

Design, develop, and evolve back-end services and APIs with a focus on scalability, performance, security, and reliability
Contribute to architecture definition (microservices, integrations, APIs, and messaging/events where applicable)
Ensure quality through standards, code reviews, and testing (unit, integration, and functional tests)
Contribute to DevOps practices (CI/CD pipelines, automations, production deployments) and improvements in observability/SRE
Participate in system modernization and migration initiatives, supporting the technological evolution of the product as a platform
Use AI as a core part of daily work, applying AI to accelerate engineering, reinforce quality (e.g., test generation/validation), support troubleshooting, and automate tasks

Requirements

What you’ll need

Strong experience in back-end development with Java and Kotlin, building REST APIs and service architectures, using Maven/Gradle
Proficiency with JPA/Hibernate
Experience with AWS (EC2/EKS, S3, SQS/SNS, IAM, Secrets Manager, KMS, Parameter Store) and a Cloud-First mindset
Experience with relational and non-relational databases and engineering practices focused on performance and reliability
Knowledge of CI/CD, good versioning practices, and monitoring/logging
Observability knowledge: Datadog APM, logs, RUM, custom dashboards, distributed tracing with OpenTelemetry
Testing experience: JUnit 5, Testcontainers, Mockito, Pact (contract tests with BFFs), WireMock
Experience with messaging (Kafka, SNS/SQS), idempotency, dead letter queues, and event ordering
Experience with GitHub
Knowledge of Hexagonal / Clean Architecture applied to Spring microservices
Experience applying Artificial Intelligence to development (using tools and/or integrating AI capabilities in a secure and traceable way)

Benefits

Comp & perks

Transportation allowance
Meal voucher (restaurants) / Food voucher (supermarkets)
Medical plan (Fundação Saúde Itaú or Central Nacional Unimed)
Dental plan (Odontoprev or Interodonto)
Life insurance
Profit-sharing (PLR) – Participation in profits and results (subject to bank performance)
Private pension plan
Exclusive discounts on our financial products
Enhanced maternity and paternity leave
Childcare / nanny allowance (for parents)
Education support
Wellhub or TotalPass (wellness program)
Access to Itaú leisure clubs (Guarapiranga / Itanhaém and São Sebastião)

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

JavaKotlinREST APIsMavenGradleJPAHibernateCI/CDAITesting

Soft Skills

collaborationproblem-solvingcommunicationadaptabilityattention to detail