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Pessoa Desenvolvedora Backend Sênior Kotlin/Java | Cartões

C6 Bank 💼 Full-time🗓 2026-07-13 → 2026-07-31

Core

Senior backend engineer responsible for high-criticality transactional flows, product implementation, and architectural design within the Cards area (Authorization, Offers, Billing).

Role type

Senior IC backend engineer (Kotlin/Java, transactional systems)

Builds

Secure and efficient product deployments across Homologation and Production environments for the bank's card ecosystem.

Domain

Fintech / Banking / Payments

Deliverable

production ML models | product features | infrastructure

Required skills

Kotlin, Java, Spring Boot, Microservices, Unit and Integration Testing, PostgreSQL, MongoDB, Cassandra, Kafka, SQS, SNS, Observability, Cloud, Security Protocols, Infrastructure as Code, Event-driven architecture, Asynchronous flows, High-criticality transactional flows

Preferred skills

Agile methodologies, Continuous improvement practices

Technologies

Kafka, SQS, SNS, PostgreSQL, MongoDB, Cassandra, Spring Boot, Cloud

Responsibilities

Lead full product implementation covering Homologation, Production, and Deploy environments; Master product architecture and component design; Ensure development quality through robust coding practices, code reviews, and high automated test coverage.

Seniority

Senior, hands-on IC

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