Brazil
Orange Business
Vagas Internas
Senior Backend Kotlin Developer
Brazil
São Paulo, São Paulo, Brazil
AWSDockerKubernetes
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About the opportunity
Our purpose is to create technologies that challenge the best in the world and change the game for our clients. Therefore, we seek professionals who want to be part of a culture based on excellence and innovation. If you identify with a collaborative work environment driven by curiosity, come build the future of technology with us.
We value the continuous growth of zuppers, encouraging each person to pursue paths that drive their professional evolution.
We are looking for a backend Kotlin developer to work on one of the country's main core banking systems, in a high-criticality and performance environment, using the best of AWS. You will participate in projects that require technical excellence, critical thinking, and systemic vision, collaborating in multidisciplinary teams that value innovation, security by design, and continuous value delivery.
What you will do here
- Develop, evolve, and maintain backend services using Kotlin, ensuring high performance, scalability, and security for mission-critical core banking systems.
- Act in the architecture and implementation of cloud-native solutions on AWS, using EKS/Fargate for container orchestration, SQS for messaging, DynamoDB for persistence, and applying Well-Architected Framework practices to ensure robustness, cost efficiency, and compliance.
- Implement messaging and streaming integrations with Kafka and SQS, ensuring resilience, monitoring, and reliable processing of events in distributed systems.
- Develop and automate unit, integration, and performance tests, creating robust CI/CD pipelines and contributing to the continuous improvement of code quality.
- Build, maintain, and evolve Docker containers, implementing orchestration via Kubernetes (EKS) to ensure secure, scalable, and high-availability deployments.
- Actively participate in technical discussions, code reviews, definition of architectural standards, and design decisions, questioning approaches, proposing improvements, and sharing knowledge with the team.
- Apply security by design practices, such as IAM least privilege, encryption at rest/in transit, and secure secret management, anticipating risks and ensuring solution compliance.
- Explore and validate the use of AI tools to support development, critically reviewing AI-generated outputs and promoting responsible innovation in daily work.
- Collaborate with multidisciplinary teams (product, QA, SRE, security), participating in agile ceremonies, technical alignments, and continuous improvement initiatives.
Minimum requirements
What we expect you to know
- Solid experience in backend development with Kotlin
- Real-world experience in AWS environments, especially with EKS/Fargate, SQS, DynamoDB
- Practical knowledge of the AWS Well-Architected Framework
- Messaging & Streaming: Kafka and SQS
- Testing: Experience with unit, integration, and performance tests
- Containers: Docker and orchestration on Kubernetes (EKS)
For this opportunity, we will have a practical test.
What happens after my internal application?
Once your application is confirmed and it's determined that your profile fits the chosen position, we will communicate your internal selection application to your immediate leadership and HR Business Partner via email.
Want to understand more details? Visit the Vagas Internas page sites.google.com/zup.com.br/zup/vagas-internas on Zupnet.
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