Senior Node/React Developer

CI&T

Join CI&T to support a media client as a Senior Node/React Developer — write clean code, mentor teammates, and improve product quality.

Posted 5/8/2026full-timeRio de Janeiro • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

ApolloCloudFirebaseGraphQLiOSPythonRubySwift

About the role

Key responsibilities & impact

Work with CI&T to support a client in the Media industry;
Write clean, maintainable code using software development best practices;
Design solutions using appropriate frameworks;
Consistently identify improvement opportunities, including architectural improvements, patterns, developer experience, and user experience;
Collaborate with other team members, including developers, designers, QA, and stakeholders, to ensure project success;
Perform code reviews and provide constructive feedback;
Ensure a stable and productive development environment;
Be open to learning widely adopted tools in the technology stack;
Stay up to date with Swift language updates and explore how to apply them within the team;
Actively participate in solving complex problems, identifying improvement opportunities, and proposing innovative solutions;
Mentor and share knowledge with more junior developers, supporting their growth and proactively assisting the team;
Monitor and fix crashes reported by Firebase Crashlytics, promoting a culture of quality and incident management within the team;
Break down complex features into testable, incremental pieces, using techniques like feature flags;
Incrementally refactor legacy code and onboard new team members;

Requirements

What you’ll need

Proficiency in Apple platform development and full mastery of Swift 5+, including knowledge of complex topics and analytical ability to propose complex refactorings
Design Patterns: Deep knowledge of VIPER (primarily) and its variations, as well as familiarity with MVVM, MVP and other patterns such as Facade, Adapter, Factory, Singleton, Builder, Abstract
SwiftUI as main UI framework, including knowledge of Threads
UIKit with deep mastery and view hierarchy optimization
Swift Concurrency (async/await, Actor)
Version Control GIT with deep knowledge, including GitFlow and autonomy to handle advanced issues (edit commits, remove commits, move commits between branches)
CocoaPods and Swift Package Manager (SPM) for dependency management, with autonomy to create and maintain libraries
GraphQL with Apollo iOS, including deep concepts such as fragments, query operations (union, etc), Interceptors, Headers and Response
CI/CD with Xcode Cloud, GitLab CI or Fastlane, including ability to build pipelines
Unit Testing with XCTest and Swift Testing, including snapshot testing techniques
Firebase Crashlytics and Google Analytics
Networking: HTTP requests, JSON/XML parsing, asynchronous programming with GCD (DispatchQueue, OperationQueue), Async/Await
Memory and Performance: Memory management with Automatic Reference Counting (ARC), lazy properties, computed variables, weak/strong/unowned references
Xcode mastery, including shortcuts, debugging features (layout, network, resources) and supporting tools (SPM, Xcodegen, Instruments)
Design System and creation of scalable components in large-scale projects
Agile methodologies (Scrum, Kanban) and tools such as Jira
It will be a plus if you have:
Knowledge of other supporting languages, such as automation languages for CI (Ruby, Python, etc)
Understanding of Bitrise integration workflow
Ability to present Apple-related topics to internal or external teams
Basic knowledge of security (data persistence, HTTPS and authentication mechanisms)

Benefits

Comp & perks

Health and dental insurance;
Food and meal allowance;
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

Swift 5+Design PatternsVIPERSwiftUIUIKitSwift ConcurrencyVersion Control GITCocoaPodsGraphQLUnit Testing

Soft Skills

collaborationmentoringproblem-solvingconstructive feedbackcommunicationproactive assistanceanalytical abilityidentifying improvement opportunitiessupporting growthpromoting quality