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

Ciandt; Brasil; Presencial; BRL 260 000 - 420 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Health and dental insurance

Meal allowance

Childcare assistance

Extended paternity leave

Wellness benefits

Profit Sharing (PLR)

Life insurance

CI&T University - continuous learning

Resumo da oferta

CI&T seeks a Senior Backend Engineer / Tech Lead to design and build high-performance backend services and cloud-native infrastructure on AWS. You will work with Java 21, Spring Boot, Go, Kubernetes, and Terraform, leading the technical direction and collaborating in English with international stakeholders.

The role emphasizes backend architecture, real-time capabilities, secure deployments, and cost-aware optimization. On-site in Brazil with a global impact and growth opportunities.

Qualificações

• Proficient in Java 21 and Spring Boot 3.x with RESTful services.
• Experience in real-time streaming with Go and WebSocket.
• Strong knowledge of AWS, Terraform, and Kubernetes for cloud-native backends.
• Hands-on with MongoDB schemas, migrations and Redis caching.
• Security: OAuth2/OIDC integration and Spring Security.
• Ability to design event-driven architectures (SNS/SQS).
• Excellent written and spoken English; leadership experience preferred.

Responsabilidades

• Design, implement and maintain scalable backend services in Java and Go.
• Lead technical direction, code reviews, and mentoring for the team.
• Build and manage AWS-based cloud infrastructure with Terraform and Kubernetes.
• Define REST APIs, event-driven flows and real-time communication patterns.
• Set up CI/CD pipelines in GitLab and ensure secure deployments.

Conhecimentos

Java 21

Spring Boot

Go

REST API

MongoDB

Redis

WebSocket

Spring Security

OAuth2

Event-driven

AWS

Kubernetes

Terraform

CI/CD

English fluency

Leadership

Formação académica

Bachelor's degree in CS/Software Engineering

Ferramentas

Terraform

AWS (EKS, Lambda, S3)

Kubernetes

Docker

GitLab CI/CD

Mongock

OpenFeign

QueryDSL

Spring Web

Descrição da oferta de emprego

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 8,000 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.

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.