Senior Android Developer

CI&T

Senior Android Developer creating scalable tech solutions for media clients. Collaborating with teams to deliver high-quality software and driving technical leadership.

Posted 5/8/2026full-time🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

AndroidFirebaseGradleGraphQLJavaKotlinMavenRxJavaSQLite

About the role

Key responsibilities & impact

Support a media industry client in collaboration with CI&T;
Write clean, maintainable code using software development best practices;
Design solutions using appropriate frameworks;
Identify opportunities for improvement;
Work collaboratively with other team members, including developers, designers and stakeholders, to ensure project success;
Perform code reviews;
Ensure a stable and productive development environment;
Provide technical leadership as a team reference, influencing and mentoring more junior developers;
Be available to onboard and acclimate new developers;
Guide and facilitate pair programming, fostering rich technical discussions and proposing code improvements;
Develop a sense of ownership over what is being built;
Be open to learning widely adopted tools in the technology stack;
Actively participate in solving complex problems, identifying improvement opportunities and proposing innovative solutions;
Understand the client's business context, how a media company operates, the impact of developed features and their relationship with users;
Visualize and communicate opportunities for improvement for the business and for others' journeys;
Seek the balance between technical matters and delivery, knowing when to dive deeper into an investigation or ask for help.

Requirements

What you’ll need

Proficiency in Java and full mastery of the Kotlin language, with analytical ability to propose complex refactorings;
Deep knowledge of repositories and use cases;
Knowledge of design patterns (especially MVVM) and their variations;
In-depth mastery of Android SDK aspects, including managing library updates, view hierarchy optimization and configuring ProGuard rules;
Mastery in using the Android Studio IDE, with deep knowledge of shortcuts, features and debugging tools for layout, network and resources;
Experience building scalable interfaces/components in large-scale projects;
Experience with reactive programming (RxJava, LiveData, Flow);
Advanced knowledge of Lifecycle;
Experience with dependency injection and Android Architecture Components;
Dependency management (Gradle, Maven);
Required expertise in implementing/maintaining GraphQL queries, including advanced concepts such as grouping in fragments, operations in queries (union, etc.), using a playground for testing and an analytical perspective to refactor queries;
Advanced knowledge of versioning techniques, conflict resolution, merges and rebases, commit rollback and tagging;
Experience with CI/CD techniques for pipeline automation, creating/maintaining flows and familiarity with tools like Bitrise;
Experience implementing SQLite databases and data manipulation, as well as expertise in creating caches and resilience techniques for data persistence;
Experience with data/network traffic monitoring techniques;
Mastery of TDD and application of unit tests, instrumented tests, automated UI tests and navigation flow tests;
Experience with BDD (Behavior-Driven Development);
Knowledge of advanced security concepts, including data security, encryption, certificates, biometric/facial authentication and JWT;
Experience with monitoring and optimizing app performance, especially on Android TV devices, focusing on energy efficiency and efficient memory usage;
Mastery of resource monitoring tools/techniques such as Android Profiler and Traceview;
Experience with Custom Views;
Experience creating performant layouts with different ViewGroups;
Knowledge of accessibility;
Experience with Firebase, Google Analytics and Crashlytics;
Desired:
Experience engaging with the Android community and producing relevant content such as articles, documentation, talks, presentations or lectures on Android topics;
Experience managing conflicts from library updates across partner teams;
Mastery of Jetpack Compose;
Knowledge of network traffic analysis tools (Network Inspector, Charles Proxy, etc.);
Ability to lead pair programming and foster rich discussions, proposing code improvements;
Forked projects and/or PRs submitted to significant community repositories;
Knowledge of agile methodologies (Scrum, Kanban and others);
Experience leading projects;

Benefits

Comp & perks

Health and dental insurance;
Meal and food allowance;
Childcare assistance;
Extended parental leave;
Partnerships with gyms and health and 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;
Prenatal and parenting responsibility course;
Partnerships with online course platforms;
Language learning platform;
And many others

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

JavaKotlinAndroid SDKMVVMRxJavaLiveDataFlowGraphQLSQLiteTDD

Soft Skills

technical leadershipmentoringcollaborationproblem-solvingcommunicationownershippair programminganalytical abilityfacilitationadaptability