mid level, AWS/Kotlin Backend Developer in Brazil at Jobgether

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Mid-Level AWS/Kotlin Backend Developer based in Brazil.

This is an opportunity to join a strategic technology project focused on building robust, scalable backend solutions in a modern cloud environment.
You’ll work primarily with Kotlin and AWS, contributing to systems where reliability, performance, and security are critical.
The role combines backend engineering with cloud-native development, containerization, messaging, and distributed systems.
You’ll be encouraged to challenge technical decisions, explore better approaches, and contribute beyond simply executing predefined tasks.
AI-assisted development is also part of the engineering environment, with an emphasis on critically reviewing and validating AI-generated output.
You’ll collaborate with experienced technology professionals in a culture that values continuous learning, technical curiosity, and delivery excellence.
For candidates based in the Campinas Metropolitan Region, office attendance is required in accordance with the applicable hybrid-work policy.

• Develop and maintain scalable, reliable backend services using Kotlin, applying sound software engineering and architectural practices.
• Design and operate cloud-native solutions on AWS, including services such as EKS/Fargate, SQS, and DynamoDB.
• Apply AWS Well-Architected Framework principles to improve reliability, security, performance, operational excellence, and cost efficiency.
• Build and maintain event-driven solutions using Kafka and SQS for messaging and streaming.
• Develop containerized applications using Docker and deploy and manage workloads through Kubernetes/EKS.
• Create and maintain comprehensive unit, integration, and performance tests to ensure software quality and production readiness.
• Apply security-by-design principles, including least-privilege IAM, encryption at rest and in transit, and secure secrets management.
• Evaluate technical decisions critically, identify potential improvements, and propose alternative approaches when appropriate.
• Use AI-assisted development tools such as Devin, Claude Code, Kiro, or comparable solutions to accelerate engineering activities while carefully validating generated code and recommendations.
• Collaborate with technical teams and stakeholders to plan, implement, troubleshoot, and continuously improve backend solutions.
• Take ownership of delivery quality, technical planning, system reliability, and agreed timelines for critical applications.

• Mid-level professional experience in backend software development, with solid hands-on experience using Kotlin.
• Strong practical knowledge of AWS, particularly EKS/Fargate, SQS, and DynamoDB.
• Experience with AWS Well-Architected Framework principles and cloud-native architecture.
• Hands-on experience with Kafka and SQS for messaging, event-driven architectures, or streaming solutions.
• Experience developing and maintaining applications using Docker and Kubernetes, preferably AWS EKS.
• Strong understanding and practical experience with unit, integration, and performance testing.
• Knowledge of secure AWS development practices, including IAM least privilege, encryption, and secrets management.
• Experience with AI-assisted software development tools and the ability to critically review, test, and validate AI-generated code.
• Strong critical-thinking skills, with the confidence to question technical decisions and recommend better alternatives.
• Demonstrated technical curiosity and a willingness to understand the reasoning behind architectures, solutions, and engineering decisions.
• Strong ownership, attention to quality, planning skills, and commitment to delivery timelines.
• Ability to work collaboratively while also operating independently when solving technical problems.
• Location requirement: candidates residing in the Campinas Metropolitan Region are expected to work from the local office according to the applicable attendance policy.

• Health and dental insurance.
• Meal and food allowance.
• Childcare assistance.
• Extended parental leave.
• Wellhub and TotalPass partnerships for fitness and wellness services.
• Profit Sharing and Results (PLR).
• Life insurance.
• Continuous learning through an internal learning platform.
• Partnerships with online course and professional development platforms.
• Language-learning platform.
• Access to physical, mental health, and wellbeing resources.
• Pregnancy and responsible-parenting support programs.
• Employee discount club and additional partner benefits.
• Inclusive workplace with dedicated health, wellbeing, and inclusion support.
• Opportunities for continuous professional and technical development.