We are tech transformation specialists, uniting human expertise with AI to create scalable tech solutions.With over 8,000 CI&Ters around the world, we’ve built partnerships with more than 1,000 clients during our 30 years of history. Artificial Intelligence is our reality.We are seeking a Senior AWS Cloud Architect to support a large-scale cloud migration program for a global digital technology organization operating in the communications and cloud-enabled services space. This role will be instrumental in defining, designing, and executing the migration of complex workloads into AWS, ensuring scalability, resilience, security, and cost efficiency from the ground up.The architect will work closely with engineering teams, infrastructure stakeholders, and business leaders to modernize legacy systems, design cloud-native architectures, and establish strong foundational patterns for long-term platform evolution. The role requires advanced English proficiency to collaborate with distributed teams across multiple regions.Responsibilities
Lead end-to-end cloud architecture design for AWS migration initiatives, including workload assessment, target architecture definition, and migration strategy
Design scalable and resilient AWS-based architectures aligned with best practices for high availability, fault tolerance, and performance
Define and implement core AWS service usage patterns across compute, storage, networking, integration, and security domains
Architect and optimize data layer solutions with strong emphasis on NoSQL databases such as DynamoDB and related AWS data services
Design enterprise-grade networking architectures including VPC design, routing strategies, hybrid connectivity, and segmentation models
Define and implement IAM structures including identity federation, role-based access control, and least privilege principles
Support the migration of legacy applications and data platforms into cloud-native or hybrid AWS architectures
Collaborate with security and DevOps teams to ensure secure-by-design and automated infrastructure provisioning using IaC tools such as Terraform or CloudFormation
Define cloud governance models including landing zones, multi-account strategies, and policy enforcement mechanisms (SCPs, guardrails)
Optimize architectures for cost efficiency, scalability, and operational simplicity
Provide technical leadership during discovery, assessment, and migration execution phases
Work closely with stakeholders to ensure alignment between business requirements and technical architecture decisions
Contribute to cloud modernization strategy and long-term platform roadmap
Requirements- 7+ years of experience in cloud architecture or infrastructure engineering roles
Strong hands-on experience with AWS, including IAM, networking (VPC, Route 53, Direct Connect), compute (EC2, ECS, Lambda), storage (S3), and security services (KMS, CloudTrail, CloudWatch)
Proven experience designing NoSQL data architectures, especially Amazon DynamoDB
Experience with large-scale cloud migrations (rehost, replatform, refactor)
Strong knowledge of cloud networking, hybrid architectures, and distributed systems
Experience designing IAM governance and enterprise access control models
Familiarity with Infrastructure as Code (Terraform, CloudFormation, or similar)
Understanding of high availability, scalability, and resilient system design
Exposure to financial services architecture patterns and regulatory environments
AWS certifications (Solutions Architect Professional preferred)
Advanced English communication skills Nice to Have
Experience in large enterprise cloud transformation programs
Background in financial services, fintech, or regulated industries
Experience with observability stacks (CloudWatch, OpenTelemetry, Prometheus)
Familiarity with container platforms such as Amazon EKS and Kubernetes networking
Experience with cost optimization and FinOps practices in AWS environments
Exposure to multi-account landing zone frameworks and enterprise governance models
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 platformAnd many more!More details about our benefits here: https://ciandt.com/br/pt-br/carreirasAt 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.
CI&T is a technology transformation specialist that combines human expertise with artificial intelligence to create scalable tech solutions for enterprise clients. With over 8,000 employees worldwide, the company has built partnerships with more than 1,000 clients over its 30-year history. CI&T specializes in designing and implementing large-scale B2B applications and system architectures, with a focus on integrating AI-driven strategies into technical solutions. The company serves as a strategic technical partner for global enterprises, helping them understand technology implications and build long-term technical roadmaps.
