WHAT DOES AN IOS DEVELOPER DO?
Published: Jun 25, 2025 - The iOS Developer delivers high-quality mobile applications on time, contributing across all phases of the software development lifecycle from concept to implementation. This role applies modern iOS features and progressive mobile techniques to create innovative user experiences and support a 5-star app with a large user base. The developer also involves leading architectural decisions, guiding product development, and actively participating in agile practices to ensure continuous improvement and engineering excellence.


A Review of Professional Skills and Functions for iOS Developer
1. iOS Developer Duties
- Business Analysis: Contribute to the analysis of business requirements, prepare design and implementation recommendations and estimate development effort
- Feature Development: Design, develop, test and document the development tasks, which include both new features and support activities
- Code Review: Lead or participate in design reviews, code reviews and architecture evolution discussions
- Task Execution: Work as either part of a team or individually on tasks
- Process Improvement: Contribute to the continuous improvement in development technologies and practices
- Team Collaboration: Work collaboratively and professionally with other staff in cross-functional teams to achieve goals
2. iOS Developer Details
- Code Quality: Write good quality code including Unit testing
- Architecture Standards: Apply best practices and software architecture guidelines
- Requirement Analysis: Interpret written business requirements and technical specification documents
- Technical Documentation: Create and maintain technical documentation
- Team Mentoring: Help to mentor other members of the team and contribute to the system architecture and the development process
- Code Review: Review peers’ code to deliver the same code quality as a team
3. iOS Developer Responsibilities
- iOS Development: Design and build advanced applications for iOS in collaboration with design and Product development teams
- Feature Integration: Collaborate with cross-functional teams to define, design, and ship new features
- API Integration: Work with data sources and APIs to guarantee data integration and a seamless experience in training with premium devices
- Tech Exploration: Continuously discover, evaluate, and implement new technologies to maximize development efficiency
- Framework Design: Design and maintain shared application plugins and proprietary frameworks to increase the modularity and testability of software solutions
- Performance Tuning: Work on bug fixing and improving application performance for amazing training experiences
4. iOS Developer Job Summary
- App Ownership: Own one or more applications, add new features, resolve bugs, and refactor/improve the code base
- Project Planning: Identify technical requirements in product meetings and assist the business team with realistic project planning and feature development
- Requirement Translation: Translate product requirements into functional, maintainable, extensible software that is in line with company objectives
- Product Implementation: Implement new applications, take ownership of the new product from development through deployment and production monitoring
- Backend Collaboration: Collaborate with Server Application Engineers to determine the best way to maintain low response times as new features are designed
- Test Planning: Work with QA to develop test plans/strategies
5. iOS Developer Accountabilities
- iOS Design: Design and build applications for the iOS platform
- App Performance: Ensure the performance, quality, and responsiveness of applications
- Feature Delivery: Collaborate with a team to define, design, and ship new features
- Bug Fixing: Identify and correct bottlenecks and fix bugs
- Legacy Support: Build on legacy codes
- Code Maintenance: Help maintain code quality, organization, and automation
- Game Development: Develop games and game features
- Game Optimization: Optimize games for mobile platforms
- Plugin Development: Develop and maintain native plugins for Unity
- Code Polishing: Polish and maintain the source code
6. iOS Developer Functions
- Agile Collaboration: Working closely with the wider engineering team in an agile environment to deliver great results
- Lifecycle Development: Working across the full development lifecycle
- Feature Innovation: Developing new features, experimenting with new ideas and generating industry-leading solutions to improve client and customer experience
- App Scaling: Scaling the iOS application as we expand global reach
- Bug Resolution: Building new features, debugging and fixing bugs
- App Release: Releasing the iOS app to 400k monthly users
- Code Improvement: Improving codebase, continuous integration and processes as part of the iOS guild
7. iOS Developer Job Description
- iOS Applications: Building iOS (Swift and Objective C) applications as well as having the opportunity to learn and build mobile web (HTML5, CSS, JavaScript), and Android (Java or Kotlin) mobile applications
- Enterprise Development: Building enterprise applications
- Tech Knowledge: Gaining technical knowledge of software, hardware and open source technologies
- Client Interaction: Interfacing with clients, making technical recommendations
- Framework Evaluation: Helping evaluate emerging cross-platform frameworks and mobile enterprise application platforms
- Frontend Integration: Bridging the gap between elegant front-end design and existing enterprise back-end architectures
- Developer Mentorship: Working with experienced mobile developers and architects to foster experience and growth
8. iOS Developer Overview
- Team Collaboration: Collaborate with other teams and set new and improved specifications for the new application
- App Development: Write and execute high-quality code language to build a complete mobile application within the timeline
- Prototype Design: Design creative prototypes according to specifications
- App Testing: Perform unit and integration testing before launch
- Debugging Skills: Troubleshoot and debug applications
9. Senior iOS Developer Details and Accountabilities
- est Planning: Work closely with the Product and Engineering teams to define acceptance criteria and build detailed test plans
- Test Automation: Take an active role in increasing the percentage of automated test cases
- Mobile Testing: Execute hands-on functional testing on the iOS and Android mobile SDK
- Automation Collaboration: Collaborate with development teams to understand how development changes affect ongoing automation efforts
- Agile Teamwork: Work as part of a team in an Agile environment
10. Senior iOS Developer Tasks
- App Deployment: Developing, integrating and deploying the Veo iOS mobile application
- Version Support: Supporting system testing and new version release and upgrades
- Code Familiarization: Quickly learning and understanding the existing software structure and code
- Feature Development: Producing functional new features for the iOS mobile application to improve the user experience
- App Debugging: Troubleshooting and debugging to maintain the current iOS mobile application
- UI Translation: Creating and translating designer mock-ups and wireframes into usable code
- App Optimization: Improving the reliability, scalability, and performance of the current iOS application
- Industry Awareness: Recognizing cutting-edge industry application developments and sharing them with the software development team
11. Senior iOS Developer Roles
- iOS Solutions: Design and develop iOS native software solutions for business-critical application projects, enhancements, maintenance and/or support
- Code Documentation: Ensure adequate code documentation for development and maintenance use
- Developer Mentorship: Mentor iOS developers in iOS and Swift-specific functions
- Unit Testing: Plan and conduct unit testing of software solutions designed and developed to ensure quality and deliverables
- Requirement Review: Review and clarify business requirements and CX to ensure consistency with agreed standards, practices and architectures
- Agile Practices: Follow Agile development frameworks, techniques and processes, ensuring Jira hygiene through to PR reviews
- Lean Delivery: Utilise Lean Principles that ensure effective delivery of value to customers
- Process Efficiency: Consider and apply process efficiencies within the sphere of influence, eliminating waste and maintaining continuous flow
- Design Thinking: Apply Design Thinking principles such as customer empathy, creative collaboration and test and learn
- Issue Support: Conduct medium-level complexity problem management and level three issue support to ensure system reliability
- Code Review: Review code to deliver quality, escalating possible regulatory compliance, security and fraud detection issues
12. Senior iOS Developer Additional Details
- Team Collaboration: Work with a team of experienced, smart, and super-friendly developers who will support and promote professional growth
- Lifecycle Development: Develop and support the entire application lifecycle (concept, design, test, release and support)
- UX Implementation: Understand the functional spec and architecture design to develop the user experience
- QA Testing: Closely work with the QA team and write appropriate tests
- Feature Integration: Interact with Backend development and Product teams to jointly design and develop features
- Code Standards: Apply best practices and quality measures to maintain high standards and reliability of the deliveries
- Mobile Coding: Produce fully functional mobile applications, writing clean code
- Requirement Gathering: Gather specific requirements and suggest solutions
- Technical Mentoring: Provide technical guidance and mentoring to other less-experienced members of the team
- CI/CD Environment: Work tightly in a CI/CD environment
13. iOS Developer Essential Functions
- Feature Architecture: Develop and assist in the design and architecture of features for a suite of native customer-facing applications
- App Lifecycle: Participate in the full app development life cycle such as concept, architecture/design, build, deploy, test and release to App / Google Play store
- Solution Feasibility: Ensure selected solutions are technically and operationally feasible
- Product Strategy: Work with product teams on new product ideas and strategy
- Architecture Translation: Translate requirements created by functional analysts into the architecture for that solution and describe it through a set of architecture and design documents
- Documentation Management: Lead in the creation and maintenance of documentation related to the solutions mentioned above
- Standards Compliance: Adhere to all enterprise standards as they relate to the proposed solution
- Process Improvement: Drive a best practices approach to the continuous improvement of products, processes, and tools
- Developer Leadership: Lead, train, guide and mentor other developers on the team
14. iOS Developer Role Purpose
- Feature Development: Contribute to the development and quality of features being implemented on the Expedia iOS app
- Code Review: Provide and participate in code reviews to assess code quality and flexibility, and the application of good object-oriented programming techniques
- CI/CD Practice: Drive continuous improvement and continuous delivery in the software development process within an agile development team
- Automated Testing: Write automated unit, system, and acceptance tests to support continuous integration pipelines
- Problem Solving: Collaborate with team members to co-develop and resolve problems
- System Integration: Understand the importance of system and technology integration and the basic features and facilities involved in the integration process
- Skill Application: Apply formal training methods to the current workload
- Status Challenge: Feel comfortable challenging authority/the status quo
- Partnership Coordination: Help coordinate partnership input and collaboration efforts when developing solutions to issues
- Status Reporting: Report clearly on current work status and ask challenging questions when empowered to do so
15. Senior iOS Developer General Responsibilities
- Timely Delivery: Complete development assignments on time with an appropriate level of quality to support project efforts
- Lifecycle Participation: Participate in a digital technology project from concept to implementation, and through all phases of the software development lifecycle
- Effort Estimation: Create work estimates based on technology concepts and requirements documentation
- App Leadership: Own and lead development efforts on a 5-star app, with hundreds of thousands of positive reviews
- iOS Development: Develop world-class iOS applications
- User Experience: Use progressive mobile ideas and the latest iOS platform features to build cutting-edge user experiences
- Product Collaboration: Work alongside the product team to guide new ideas, create prototypes, and build features on the product roadmap
- Scrum Engagement: Participate in rapid-delivery Scrum process including sprint planning, daily standups, demos, and retrospectives
- Engineering Excellence: Advance engineering excellence through the latest methodologies and tools
- Mobile Integration: Build a seamless mobile experience with the rest of the engineering team
- Architecture Leadership: Be a contributor in leading system architectures and high engineering standards