Key Responsibilities and Required Skills for Front End and Mobile Developer

🎯 Role Definition

As a Front End and Mobile Developer, you will design, build, and maintain high‑quality user interfaces and mobile applications that delight users and drive business growth. You will collaborate cross‑functionally with UX/UI designers, back‑end engineers, product owners and QA teams to translate requirements into intuitive experiences for web, iOS and Android platforms. You will own the front‑end architectural direction, mobile app performance and responsiveness, ensuring seamless integration across devices and platforms while adhering to modern best practices in development, deployment and optimisation.

📈 Career Progression

Typical Career Path

Entry Point From:

Junior Web Developer / Front‑end Intern
Mobile Application Developer (iOS/Android)
UI/UX Developer with coding experience

Advancement To:

Senior Front End & Mobile Developer
Lead Full‑Stack Mobile/Front‑End Engineer
Principal Mobile Architect / Director of Digital Experience

Lateral Moves:

Mobile Platforms Engineer (iOS/Android specialist)
Hybrid App Developer (React Native/Flutter)
UX Engineer with front‑end specialization

Core Responsibilities

Primary Functions

Collaborate with product, design and back‑end teams to define the front‑end and mobile requirements, user flows and interface specifications that meet business objectives.
Develop responsive web applications and mobile apps (iOS, Android) using frameworks such as React, React Native, Flutter, Angular or Vue.js and native SDKs, converting wireframes and prototypes into functional code.
Build reusable front‑end component libraries, mobile UI modules, shared services and APIs to support efficient and consistent development across web and mobile platforms.
Ensure that applications are performant, scalable and deliver excellent user experience – optimise for load time, memory, battery usage, network conditions, and device‑agnostic UI.
Implement and maintain state management, navigation, routing, data caching, offline‑capability, local storage, push notifications and platform‑specific features for mobile apps.
Integrate front‑end and mobile applications with RESTful APIs, GraphQL endpoints, web services, third‑party SDKs and native modules to provide seamless data exchange and feature access.
Conduct comprehensive testing: unit tests, integration tests, end‑to‑end tests (web & mobile), accessibility testing, usability testing and device/browser compatibility testing across platforms.
Debug and troubleshoot front‑end and mobile issues, analyse crash reports, performance logs, memory leaks, layout issues and user‑reported bugs, and implement corrective actions.
Apply continuous integration and continuous deployment (CI/CD) practices, manage version control (Git), app store submission processes (iOS App Store, Google Play) and monitor release readiness and post‑release performance.
Stay current with evolving front‑end and mobile frameworks, libraries, device platforms, operating system updates, and incorporate emerging tools and best practices into the development lifecycle.
Optimize web applications for SEO, accessibility (WCAG), cross‑browser compatibility (Chrome, Safari, Firefox, Edge) and mobile UI/UX standards to maximise reach and usability.
Collaborate with designers to ensure UI/UX fidelity, pixel‑perfect alignment, animations, transitions, and interactions that are user‑friendly and platform‑consistent.
Ensure security best‑practices for front‑end and mobile (input validation, secure storage, authentication/authorization, API security, data encryption) are built into applications from the outset.
Monitor app analytics, user behaviour metrics, crash reports and performance KPIs to continuously refine the product, increase engagement, retention, conversion and user satisfaction.
Support offline capability, synchronization, device‑specific optimisations (camera, sensors, geolocation) and adapt apps to diverse mobile form factors, screen sizes and operating system versions.
Maintain technical documentation, architecture diagrams, code comments, onboarding guides and user‑facing release notes to ensure team alignment and knowledge sharing.
Mentor junior front‑end and mobile developers, conduct code reviews, promote coding standards, share best practices and help elevate the team’s skill‑level and productivity.
Manage technical debt, refactor legacy code, migrate older mobile/web applications to modern frameworks or architectures (progressive web apps, native modules, micro‑front‑ends) to future‑proof the stack.
Participate in Agile/Scrum ceremonies: sprint planning, backlog grooming, retrospectives, demos and continuous improvement—ensuring front‑end and mobile deliverables align with business timelines.
Collaborate with DevOps, infrastructure and QA teams to optimise build pipelines, deployment automation, crash/analytics integration, feature toggles and monitor production health of mobile and web applications.

Secondary Functions

Support ad‑hoc front‑end or mobile feature requests, prototypes, experiments and rapid proof‑of‑concepts for new product ideas.
Contribute to the organisation’s digital roadmap and platform strategy, advising on front‑end and mobile technology adoption, UI/UX architecture and cross‑platform reuse.
Collaborate with business units to translate user‑experience requirements into technical deliverables on web and mobile platforms.
Participate in sprint planning, agile ceremonies and cross‑team workshops to ensure front‑end and mobile alignment with product goals.

Required Skills & Competencies

Hard Skills (Technical)

Proficiency in front‑end web technologies: HTML5, CSS3/SASS/LESS, JavaScript/TypeScript, and frameworks such as React, Angular or Vue.js.
Experience with mobile application development: native (Swift, Objective‑C, Kotlin, Java) and/or cross‑platform (React Native, Flutter, Xamarin) frameworks.
Strong understanding of responsive design, mobile first design principles, adaptive layouts, cross‑browser compatibility and accessibility (WCAG) standards.
Experience integrating front‑end/mobile apps with REST APIs, GraphQL, third‑party SDKs, push notifications, offline synchronization and mobile device capabilities (camera, GPS, sensors).
Hands‑on experience with state management (Redux, MobX, Vuex), navigation libraries, app lifecycle, background tasks and local persistence (SQLite, Realm, AsyncStorage).
Proficient in performance optimisation techniques: code‑splitting, lazy loading, bundle size reduction, memory leak debugging, native performance profiling, GPU layers, network minimisation.
Familiar with version control (Git, GitHub/GitLab), unit testing, UI testing, integration testing, code reviews, linting, build tools (Webpack, Metro, Xcode, Android Studio) and CI/CD pipelines.
Strong knowledge of app‑store submission processes (iOS App Store, Google Play), mobile platform guidelines, A/B testing, feature flags and analytics instrumentation.
Understanding of security best practices for web and mobile: secure storage, encryption, authentication flows, OWASP Mobile Top 10, data protection.
Ability to use monitoring, crash‑analytics and user‑behaviour tools (Firebase Crashlytics, Google Analytics for Firebase, Sentry, AppCenter), and to derive insights to improve user experience.

Soft Skills

Excellent analytical and problem‑solving ability, able to foresee user behaviour, performance bottlenecks and system limitations.
Strong communication skills; able to connect with designers, back‑end engineers, product managers and stakeholders and translate between technical and business perspectives.
Detail‑oriented, with a passion for quality UI/UX, animation finesse, UX accessibility and cross‑device consistency.
Effective time‑management and prioritisation skills to handle multiple front‑end and mobile deliverables under tight deadlines.
Collaborative team‑player who thrives in agile, fast‑paced environments and contributes positively to peer code reviews, workshops, knowledge‑sharing.
Adaptable and continually learning; excited by the evolving front‑end/mobile ecosystem and ready to adopt new frameworks, tools and industry best practices.
User‑centric mindset; empathises with end‑users, drives improvement of user engagement, retention and satisfaction, and aligns technical work with business outcomes.

Education & Experience

Educational Background

Minimum Education:
Bachelor’s degree in Computer Science, Software Engineering, Information Technology or related field.
Preferred Education:
Master’s degree or advanced certifications in mobile application development, UI/UX design, full‑stack development or mobile architecture.
Relevant Fields of Study:

Computer Science
Software Engineering
Mobile Application Development
Information Technology / Digital Media

Experience Requirements

Typical Experience Range:
3‑5 years of professional experience developing front‑end web applications and/or mobile applications.
Preferred:
5+ years of experience with hybrid or native mobile development, front‑end architecture design, mentoring others, and leading end‑to‑end web & mobile product delivery.