Sr. Android Developer

About the Role

We are looking for a strong iOS Developer with 3–5 years of professional experience in building scalable, high-performance native applications. The ideal candidate has deep expertise in Swift, strong architectural understanding (MVVM, MVVM-C, VIPER, Clean Architecture), experience contributing to SDKs or modular systems, and a strong foundation in clean coding principles and core computer science fundamentals.

You will take ownership of core modules, ensure high engineering standards, and build reliable, maintainable, and performant mobile systems.

Roles & Responsibilities

• Design and build scalable native iOS applications using Swift, UIKit and/or SwiftUI.

• Architect modular features using MVVM / MVVM-C / VIPER and Clean Architecture principles.

• Contribute to reusable mobile modules or SDK components with clear abstractions and API boundaries.

• Write clean, maintainable, and well-structured code following SOLID principles and best practices.

• Ensure high performance, responsiveness, and efficient memory management.

• Implement robust networking layers integrating RESTful APIs with proper error handling and security considerations.

• Identify bottlenecks, debug crashes and memory leaks, and optimize runtime performance using profiling tools.

• Maintain code quality through reviews, refactoring, and documentation.

• Support CI/CD workflows, version upgrades, and App Store releases.

Must-Have Skills

• 3–5 years of hands-on iOS development experience using Swift.

• Strong understanding of architectural patterns: MVVM, MVVM-C, VIPER, Clean Architecture.

• Experience building modular components or contributing to iOS SDKs.

• Solid understanding of OOP concepts, SOLID principles, and writing clean, extensible code.

• Strong problem-solving ability with good exposure to Data Structures and Algorithms.

• Solid understanding of concurrency (GCD, async/await), threading, and performance optimization.

• Strong knowledge of memory management (ARC), retain cycles, and runtime behavior.

• Experience writing unit tests (XCTest) and building testable systems using dependency injection.

• Proficiency with Git and modern dependency managers (SPM, CocoaPods, Carthage).

• Experience integrating RESTful APIs and working with backend systems.

• Hands-on experience with App Store submission and release processes.

Good to Have

• Experience with dependency injection frameworks (e.g., Swinject).

• CI/CD exposure (Fastlane, Jenkins, GitHub/GitLab pipelines).

• Experience profiling and debugging performance issues in production environments.

• Exposure to AI/ML integrations (CoreML, Vision, or third-party AI services).

Key Responsibility Areas:

• Design, build and deliver enterprise level mobile applications
• Write code with standards and conventions and follow best practices
• Encourage and lead innovation and solid lifecycle processes
• Collaborate with team on work definition, estimation and prioritization
• Lead and grow as a professional software engineer.
• Full ownership of product deliveries and mentoring junior team members.
• Strong client interactions to provide excellent Quality of Service.
• Owning the code base and making sure all code is reviewed and is of very high quality.
• Write and modify coding conventions and standards documents for all development

Required Skills:

• 2-4 years experience in developing Android applications using Java and Kotlin

Technologies/Frameworks – 

• Java, Kotlin
• Maven, Git, Bitbucket
• Knowledge Data Structures
• SQLite, Room Database 

• Must have strong knowledge and experience in Agile based software development methodologies. Knowledge of an Agile tool like Jira.
• Must have a very strong knowledge of integrating various system and APIs (both REST and SOAP)
• Good to have: Experience of Payment Gateway Integration, Third Party SDK integrations
• Domain Preference
• FinTech, Banking, IoT

Mandatory Skills:

• Strong skills with Algorithms and Data Structures

• Strong hands-on expertise with Objective-C & Swift.

• Strong knowledge of design principles, patterns, and best practices

• Experience with offline storage, threading, and performance tuning

• Knowledge of Xcode Tools

• Experience working with iOS frameworks such as Core Data, Core Animation, Core and Core Text

• Experience with third-party libraries and APIs

• Solid understanding of the full mobile development life cycle

• Excellent Communication & Problem Solving Skills

Her is what we are looking for

• Strong and up-to-date knowledge of Swift.

• Strong knowledge of Apple Design Principles and Application Interface Guidelines.

• Experience with iOS Frameworks such as CoreData, CoreGraphics, CoreLocation and CoreAnimation.

• Experience with threading and performance tuning.

• Knowledge of Unit Testing, Instruments and Profiling.

• Knowledge of the available open-source libraries and Cocoapods for common tasks.

• Knowledge of VoIP Notifications, CallKit and Payment gateways.

• Familiarity with Real Time Databases like DynamoDB and Firebase.

• Familiarity with cloud message APIs and Push Notifications.

• Familiarity with creating dynamic libraries and modular applications. Write scalable, high-performing and reusable code.

• Knowledge of different Apple Certificates and Profiles.

• Solid understanding of the complete application development lifecycle.

• Proficient understanding of code versioning tools, such as Git.

• Continuously discover, evaluate, and implement new technologies to maximize development efficiency.

Responsibilities: 

• Work with an open-source iOS ecosystem and the libraries available for common tasks. 
• Work directly with developers and product managers to conceptualize, build, test and realize products.  
• Build reusable iOS software components for the platform.  

• Unit-test code for robustness, including edge cases, usability, and general reliability.   
• Work on bug fixing to improve application performance and shipping new features as required 
   

  Requirements:  

• Experience with iOS Design patterns, memory management, REST web-services and JSON Parsing. Designing and building advanced applications for the iOS platform 
•  Collaborating with cross-functional teams to define, design, and ship new features 

• Design and build advanced applications for the iOS platform  
• Work on bug fixing and improving application performance  
• Can integrate apps with backend and 3rd party API’s. 
• Good programming skills in Objective-C/Swift and extensive knowledge of Apples SDKs and frameworks like Core Data, Core Graphics, Foundation, UIKit, etc.  
• Have published one or more applications in an iOS App Store. 

• Knowledge of iOS App Store deployment process. 

• Strong grasp of computer science fundamentals and excellent problem solving skills.
• Good understanding of software engineering practices, Data Structures & Algorithms.
• Solid programming skills in Java/Kotlin.
• Good communication skills.
• Strong sense of ownership and accountability.
• Experience in Reactive programming, Asynchronous programming and Unit Testing will be an added advantage.

Collabsports Technologies Pvt Ltd is a sports-tech startup based in Pune, India. We are a small team, passionate about Sports & Technology. Our product, Scorpad is a mobile app with a mission “Sporting Made Smarter”, helps athletes in recording, analysing & improving their game while collaborating with their friends and other like-minded athletes. For more information, visit https://scorpad.com">https://scorpad.com

• You need to be passinate about technology with strong development & debugging skills.
• You will be responsible for designing, developing, testing & debugging responsive mobile applications.
• You should have one or more mobile apps on Google/ App store
• Thorough with VCS/ Git
• Working knowledge of general mobile landscape, architectures and trends
• Good understanding of RESTful APIs
• You should have a desire to work in startup fast-paced environment, able to self-manage and work remotely, when required.