[Job - 31296] Master Backend Developer / Tech Lead — Java, Go & AWS, Brazil

At CI&T we help large enterprises transform the potential of AI into real business impact with AI Deployment AI-native execution and tech-integrated business solutions. With 30 years of experience in technological transformation we accelerate innovation with expertise in Agentic SDLC Application modernization Data & AI Martech and Business strategy. We are 8000 CI&Ters across more than 25 countries collaborating to build solutions with real impact. AI is already part of how we work evolve and innovate every day. We are looking for a Senior Backend Engineer / Tech Lead to design and build high-performance backend services and cloud-native infrastructure on AWS. You will work with modern technologies (Java 21 Spring Boot 3 Go Kubernetes Terraform) to deliver scalable secure and observable platforms while leading the team technically and collaborating daily in English with international stakeholders. Must-Have

Skills

(Required) Backend Engineering Java 21 with Spring Boot 3.x as core backend stack. Go for real-time streaming / relay services. REST API design using Spring Web and OpenFeign. MongoDB / DocumentDB data modeling Mongock migrations QueryDSL. Redis for caching (Spring Data Redis). WebSocket and real-time communication patterns. Spring Security OAuth2/OIDC (Cognito integration). Event-driven architectures SNS SQS Spring Integration state machines. DevOps / Infrastructure Terraform (modules service composition state management). AWS services EKS ECR Lambda VPC IAM S3 CloudFront SSM Secrets Manager API Gateway. Kubernetes (deployments service accounts IRSA namespaces). Docker (multi-stage builds container security best practices). GitLab CI/CD (pipelines and multi-environment promotion dev test UAT prod). Networking concepts NLB DNS security groups WAF. Monitoring & observability CloudWatch Dynatrace Micrometer/Prometheus. Secrets management AWS Secrets Manager and SSM Parameter Store. Communication & Leadership Comfortable communicating daily in English and explaining complex technical ideas clearly. Ideally experience as PDM (Product/Delivery Management) and team leadership (technical guidance mentoring).

Nice to Have

Video/media infrastructure SRS FFmpeg RTMP/SRT AWS MediaLive MediaPackage. Rust for performance-critical Lambda workloads. SonarQube and other code quality tooling. Cost optimization and capacity planning on AWS. Gradle build system (Groovy + Kotlin DSL).

Key Responsibilities

Design implement and maintain backend services in Java and Go for high-availability and real-time use cases. Define and evolve REST APIs event-driven flows and real-time communication patterns. Build and manage cloud infrastructure on AWS using Terraform and Kubernetes (EKS). Set up and maintain CI/CD pipelines in GitLab ensuring secure repeatable deployments across environments. Implement observability monitoring and alerting to ensure reliability and performance. Collaborate closely with product engineering and other stakeholders communicating clearly in English. Provide technical leadership to the team code reviews architecture decisions mentoring and best practices. Contribute to cost optimization capacity planning and security hardening of the platform.

What Success Looks Like

You deliver robust scalable backend and cloud solutions that are secure observable and cost-aware. The team looks to you for technical direction and you help align architecture delivery and business goals by clearly communicating complex ideas and leading by example. If this sounds like the kind of challenge you’re looking for please apply — we’d be happy to talk with you. LI-THAI23 Our benefits Health and dental insurance Meal and food allowance Childcare assistance Extended paternity leave Partnership with gyms and health and wellness professionals via Wellhub (Gympass) TotalPass Profit Sharing and Results Participation (PLR) Life insurance Continuous learning platform (CI&T University) Discount club Free online platform dedicated to physical mental and overall well-being Pregnancy and responsible parenting course Partnerships with online learning platforms Language learning platform And many more! More details about our benefits here https//ciandt.com/br/pt-br/carreiras At CI&T inclusion starts at the first contact. If you are a person with a disability it is important to present your assessment during the selection process. See which data needs to be included in the report by clicking here.This way we can ensure the support and accommodations that you deserve. If you do not yet have the assessment don't worry we can support you in obtaining it. We have a dedicated Health and Well-being team inclusion specialists and affinity groups who will be with you at every stage. Count on us to make this journey side by side.