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CI&T

Senior Fullstack Developer, Java/Next.js

CI&T

Developer in a tech transformation company specializing in AI and DevSecOps. Leading a new digital payment project at a major telecom firm in Brazil.

Posted 4/14/2026full-timeRemote • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies
AzureJavaJavaScriptKubernetesMongoDBNext.jsNoSQLPostgresReactRedisRubySpringSpring BootSpringBoot

About the role

Key responsibilities & impact
  • You will be a driving force in digital and cultural transformation, leading the adoption of DevSecOps practices at one of Brazil's largest telecommunications companies.
  • Your mission will be to develop a new project to process customer payments through multiple methods, including boleto, credit card, Pix, and others.
  • Apply practices that ensure delivery of high-quality code with low defect rates.
  • Execute your responsibilities autonomously and support other team members.

Requirements

What you’ll need
  • Java / Spring Boot 3+;
  • Relational databases (Postgres) and NoSQL (MongoDB, Redis);
  • Experience with asynchronous interactions, event-driven architectures, and messaging;
  • Experience with Kubernetes;
  • Experience versioning RESTful APIs;
  • Experience with DevOps, CI/CD, and source control for APIs;
  • API-First best practices;
  • Knowledge of API Gateway, Service Mesh, and API security;
  • Experience with cloud architecture focused on scalability and high availability;
  • Experience with authentication and authorization using OAuth2/JWT;
  • Familiarity with Azure.
  • Nice-to-haves:
  • Experience integrating architectures that coexist with legacy applications;
  • Hands-on experience with an API Gateway such as Axway or similar;
  • Experience with monitoring and observability tools: Application Insights (AppInsights) or similar;
  • Knowledge of Next.js/React;
  • Experience with Ruby;
  • Experience in component/contract test automation;
  • Ability to diagnose complex issues in distributed, high-traffic systems;
  • Experience processing large volumes of events using streaming technologies;
  • Use of Generative AI (GenAI) to accelerate activities.

Benefits

Comp & perks
  • Health and dental insurance;
  • Meal and food allowances;
  • Childcare assistance;
  • Extended parental leave;
  • Partnerships with gyms and health & wellness professionals via Wellhub (Gympass) TotalPass;
  • Profit Sharing (PLR);
  • Life insurance;
  • Continuous learning platform (CI&T University);
  • Discount club;
  • Free online platform dedicated to promoting physical and mental health and well-being;
  • Pregnancy and responsible parenthood course;
  • Partnerships with online course platforms;
  • Language learning platform;
  • And many more

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
JavaSpring BootPostgresMongoDBRedisKubernetesRESTful APIsDevOpsCI/CDOAuth2
Soft Skills
autonomyteam supportproblem diagnosis