Senior Software Engineer – Go, AWS, Distributed Architecture

Itaú Unibanco

Software Engineer at Itaú taking part in the evolution of financial messaging platforms. Collaborating in high availability environments and implementing backend solutions using Go.

Posted 6/26/2026full-timeSão Paulo • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

AWSCloudDynamoDBGoJenkinsKafkaMySQL.NETNoSQLRedisTerraform

About the role

Key responsibilities & impact

You will work on the evolution and modernization of Itaú's Financial Messaging platform, responsible for communication with clearing houses and participants in the financial ecosystem.
This is a highly critical context, with large transactional volume and strict high-availability requirements, where quality engineering makes all the difference.
It is an opportunity to work close to the business, contributing solutions that directly impact the bank's financial operations.
Participate in technical refinements and solution design
Develop backend applications using Go
Implement and evolve REST APIs
Build distributed, event-driven architectures
Work with messaging technologies (Kafka, SQS, SNS, EventBridge)
Develop cloud solutions using AWS
Write tests and ensure quality
Provide production support and incident resolution
Map and understand critical business flows
Contribute to the modernization of legacy systems
Use AI to support development, testing and documentation

Requirements

What you’ll need

Strong experience with Golang (Go)
Experience with AWS (EKS, SQS, SNS, DynamoDB, EventBridge, etc.)
Experience with microservices architecture and distributed systems
Knowledge of messaging and event-driven architecture
Experience with REST APIs and system integrations
Experience with relational and NoSQL databases (MySQL, Redis, DynamoDB)
Knowledge of engineering best practices (SOLID, Design Patterns, DDD)
Experience with observability and supporting production systems
Backend experience with Golang
Experience in mission-critical, high-throughput environments
Knowledge of infrastructure as code (Terraform/CDK)
Experience with CI/CD (GitHub Actions, Jenkins)
AWS certifications
Experience using AI in the development lifecycle
Previous experience with .NET / C#, especially in microservices architectures (for professionals transitioning to Go)
Advanced English

Benefits

Comp & perks

Transportation voucher
Meal voucher (restaurants) / Food allowance (supermarkets)
Medical plan (Fundação Saúde Itaú or Central Nacional Unimed)
Dental plan (Odontoprev or Interodonto)
Life insurance
Profit-sharing (PLR) — based on the bank’s results
Private pension
Exclusive discounts on our financial products
Extended maternity and paternity leave
Childcare / nanny assistance (for parents)
Education support
Wellhub or TotalPass
Access to Itaú Leisure Clubs (Guarapiranga / Itanhaém and São Sebastião)
+ Additional benefits you can learn about during the process 😊

ATS Keywords

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Hard Skills & Tools

GolangAWSREST APIsmicroservices architecturedistributed systemsmessaging technologiesrelational databasesNoSQL databasesinfrastructure as codeCI/CD

Soft Skills

quality engineeringproblem-solvingcollaborationcommunicationincident resolutiontechnical refinementsolution designbusiness understandingadaptabilityattention to detail

Certifications

AWS certifications