9 Android Sdk jobs in India

Velotio Technologies is a product engineering company working with innovative startups and enterprises. We have provided full-stack product development for 110+ startups across the globe, building products in the cloud-native, data engineering, B2B SaaS, IoT & Machine Learning space. Our team of 400+ elite software engineers solves hard technical problems while transforming customer ideas into successful products.

We are seeking a Senior Android Developer with expertise in building Android software development kits (SDKs) to join our team. In this role, you will lead the end-to-end development of Android SDKs that will be integrated by other developers into their applications.

The ideal candidate is an expert in Kotlin and Java, has a strong grasp of Android architecture and design patterns, and has a proven track record of publishing and maintaining Android libraries. You will drive the SDK's design, implementation, documentation, and long-term maintenance, ensuring high performance, reliability, and backward compatibility. This is a senior-level technical role that requires hands-on development, strategic thinking, and the ability to collaborate effectively in a hybrid work environment.

Requirements

• Design & Build: Craft modular, high-performance Android SDKs in Kotlin (and supportive Java) that are easy to integrate and extend.
• SDK Lifecycle Ownership: Own the full SDK development lifecycle including planning, development, testing, and release. Manage versioning (semantic versioning) and long-term maintenance for continuous improvement of the SDK.
  Release Management: Publish artifacts to Maven Central / JitPack, manage semantic versioning, changelogs, and ensure backward compatibility.
• Performance & Reliability: Profile, benchmark, and optimize for low memory, battery, and network usage across a wide device matrix.
• Security & Compliance: Implement encryption, token handling, and privacy-first data practices - crucial for payment and analytics use cases.
• Documentation & Samples: Produce clear guides, Javadoc/KDoc, and sample apps so external teams can get started in minutes.
• Collaboration: Partner with product, backend, and QA to define features, automate CI/CD (GitHub Actions/Bitrise), and drive code reviews.
  
  

What you will bring:

• 5+ years of Android development with deep Kotlin expertise and solid Java fundamentals.
• Demonstrated success shipping at least one widely adopted Android SDK or open-source library.
• Hands-on with Gradle plugin configuration, dependency management, ProGuard/R8, and publishing pipelines.
  Strong debugging skills using Android Studio Profiler, Logcat, and crash-reporting tools (e.g., Firebase Crashlytics, Sentry).
• Excellent written communication; able to translate complex concepts into concise developer documentation.

Core Android Development

• Kotlin 1.9 / 2.x & Java 11+: expert-level proficiency
• Android API 23 – 34: deep platform knowledge, multi-APK/AAB experience
• Jetpack Compose 1.6+ & ViewSystem XML
• Gradle 8.x (KTS), modular multi-module projects, dependency management

Security & Cryptography

• AES-256, RSA-2048, SHA-256, Keystore hardware-backed keys
• PCI DSS, OWASP M-STG best practices, secure memory handling
• SafetyNet / Play Integrity, certificate pinning, TLS 1.3

Network & API Development

• Retrofit 2, OkHttp 5, Kotlinx Serialization / Moshi
• Coroutines & Flow, exponential backoff, connectivity awareness

Architecture & Patterns

• MVVM, Clean Architecture, Repository, DI (Hilt/Dagger), Builder/Factory
• Modular Gradle projects, feature flags, dynamic feature delivery

Testing & CI/CD

• Unit (JUnit 5), Instrumentation (Espresso), Robolectric, MockK
• Code-coverage enforcement, static analysis (Detekt, Lint)
• Automated pipelines with GitHub Actions, Bitrise, or Jenkins

Payment Domain Knowledge

• PAN/PCI tokenization, CVV-less flows, 3-D Secure 2.x
  EMVCo specs, gateway APIs, recurring billing, chargeback flows
  
  

Bonus Points if you have.

• Prior experience in payment processing (tokenization, 3-D Secure) or analytics/event-tracking SDKs.
• Knowledge of CI/CD for mobile (Fastlane, Bitrise, or GitHub Actions) and automated testing of libraries.
• Contributions to open-source Android projects or active presence in the dev community.

Benefits

Our Culture:

• We have an autonomous and empowered work culture encouraging individuals to take ownership and grow quickly.
• Flat hierarchy with fast decision making and a startup-oriented “get things done” culture.
• A strong, fun & positive environment with regular celebrations of our success. We pride ourselves in creating an inclusive, diverse & authentic environment.

We want to hire smart, curious and ambitious folks so please reach out even if you do not have all of the requisite experience. We are looking for engineers with the potential to grow!

At Velotio, we embrace diversity. Inclusion is a priority for us, and we are eager to foster an environment where everyone feels valued. We welcome applications regardless of ethnicity or cultural background, age, gender, nationality, religion, disability or sexual orientation.

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary

Android and iOS SDK Integration Specialist

Overview
The Mastercard Digital Enablement Service (MDES) team is seeking a proactive and technically proficient SDK Implementation Support Engineer to join our growing mobile solutions team. This individual will be responsible for assisting clients and internal teams with the seamless integration of our Android and iOS SDKs. The ideal candidate has hands-on experience with mobile app development, a deep understanding of how SDKs function within mobile ecosystems and excels in communication and collaboration.

Role
• Provide expert technical support and guidance to clients and internal stakeholders on integrating and troubleshooting Android and iOS SDKs.
• Act as a technical liaison between clients and internal development teams.
• Work closely with product, engineering, and QA teams to ensure successful SDK adoption and usage.
• Debug and resolve integration issues, escalations, and edge cases across mobile platforms.
• Create and maintain integration guides, sample code, FAQs, and other support documentation.
• Conduct technical walkthroughs and knowledge transfer sessions with client development teams.
• Test SDK functionality within real-world app environments to ensure reliability and ease of use.
• Go the extra mile to ensure clients’ technical needs are met with high-quality support and care.
• Actively contribute to continuous improvement of SDKs based on customer feedback and usage data.
• Collaborate cross-functionally to influence SDK roadmap based on client needs and technical insights.

All About You
Essential knowledge, skills & attributes
• 3+ years of hands-on experience in Android (Java/Kotlin) and iOS (Swift/Objective-C) development.
• Strong understanding of mobile SDK architecture, lifecycle, and integration best practices.
• Solid experience with tools such as Android Studio, Xcode, Gradle, CocoaPods, and other SDK integration frameworks.
• Excellent problem-solving skills and the ability to debug complex issues across platforms.
• Strong communication skills with the ability to explain technical concepts to non-technical stakeholders.
• Proven ability to work collaboratively in a team-oriented environment.
• Self-starter with a proactive attitude and a passion for delivering high-quality solutions.
• Demonstrated willingness to go above and beyond to ensure success.
• Strong team player with a passion for delivering high-quality technical support.

Preferred Qualifications:
• Experience working with third-party SDKs and APIs.
• Familiarity with REST APIs, mobile analytics, and backend systems.
• Familiarity with CI/CD pipelines and mobile app deployment processes.
• Knowledge of mobile app analytics, crash reporting, and performance monitoring tools.
• Experience in customer-facing technical support or developer advocacy roles.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

• Abide by Mastercard’s security policies and practices;

• Ensure the confidentiality and integrity of the information being accessed;

• Report any suspected information security violation or breach, and

• Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.

DIGITAP.AI is a cutting-edge provider of AI/ML solutions tailored for the modern, internet-driven business landscape. Our advanced technologies empower businesses with reliable, fast, and fully compliant customer onboarding, automated risk management, and big data-enabled services, including Risk Analytics and Customised Scorecards.

Our proprietary machine learning algorithms and modules boast some of the highest success rates in the market. Partnering with the largest digital lenders in India, our team is a vibrant mix of expertise in Fintech Product & Risk Management, Fraud Detection, and Big Data Analytics.

We are looking for an experienced Mobile SDK Developer to design, develop, and maintain Android SDKs and iOS Frameworks that can be integrated into third-party applications. The ideal candidate should have a strong understanding of native mobile platforms and be capable of building robust, secure, and reusable libraries.

You will work closely with cross-functional teams including product managers, backend engineers, QA, and client developers to deliver high-performance SDKs with excellent documentation and integration support.

• Design, build, and maintain Android SDKs (in Kotlin/Java) and iOS Frameworks (in Swift/Objective-C) for external app integration.
• Ensure SDKs/frameworks are lightweight, secure, modular, and easy to integrate.
• Implement versioning, backward compatibility, and reliable update mechanisms.
• Write clear documentation and sample applications to demonstrate integration steps.
• Collaborate with QA teams to ensure high-quality testing (unit, integration, and UI).
• Monitor SDK adoption and work with clients on integration support.
• Identify and resolve performance, compatibility, and scalability issues.
• Adhere to coding standards and best practices for Android and iOS platform development.

• Strong knowledge of Android components (Activities, Services, Broadcast Receivers, Work Manager etc.)
• Experience building reusable libraries and SDKs.
• Experience in Retrofit, RxJava, Work Managers, Room, Webview usage
• Familiarity with Android build tools (Gradle, AAR packaging).
• Proficient in Kotlin and/or Java.
• Experience with ProGuard, R8, and obfuscation techniques.
• Deep understanding of Android lifecycle, memory management, and security.

• Strong proficiency in Swift and Objective-C.
• Experience building and distributing iOS dynamic/static frameworks.
• Understanding of CocoaPods, Swift Package Manager
• Knowledge of app extensions, iOS lifecycle, and sandboxing.
• Familiarity with key Apple frameworks (Foundation, AVFoundation, CoreLocation, etc.)

• Experience with cross-platform tools (e.g., Flutter, React Native) is a plus.
• Familiarity with publishing SDKs via Maven/CocoaPods/SPM.
• CI/CD setup experience for SDK distribution (Jenkins, GitHub Actions).
• Unit testing and mocking frameworks (JUnit, XCTest etc.).
• Good understanding of version control (Git), code review tools, and Agile processes.

Qualification:

• BE, BTech, MTech, ME, MCA (minimum 4 years of degree)

Experience:

• 1-3 Years