Full Stack Engineer – Mobile App Contract

Twine

Switzerland · Contract · Mid-Senior

Join a dynamic project as a Full Stack Engineer, responsible for both front-end mobile app development and robust backend implementation. You will transform Figma designs into a seamless mobile experience for Android and iOS, while architecting and maintaining a secure, scalable backend. This contract role is fully remote and ideal for a senior-level developer with expertise in both mobile and backend technologies.

Responsibilities

Develop and implement mobile app interfaces using Flutter or React Native, based on provided Figma designs
Build all app screens, manage navigation, and ensure a smooth, intuitive user experience
Integrate APIs to connect the mobile app with backend services
Design, develop, and host a secure backend infrastructure
Create and manage APIs for user accounts, services, bookings, and payment processing
Design and maintain a scalable, reliable database architecture
Ensure high performance, security, and reliability of backend systems
Collaborate remotely with stakeholders to deliver project milestones on schedule
Troubleshoot, debug, and optimize both front-end and back-end components

Skills And Requirements

Proven senior-level experience in both mobile app and backend development
Proficiency in Flutter or React Native for cross-platform mobile development
Strong background in backend frameworks (Node.js, Django, or similar) and API development
Experience with cloud hosting platforms and database management (SQL/NoSQL)
Deep understanding of mobile UI/UX best practices and responsive design
Expertise in integrating third-party APIs and payment gateways
Strong knowledge of security best practices for both mobile and backend systems
Ability to work independently and communicate effectively in a remote setting
Excellent problem-solving skills and attention to detail
Availability for a full-time contract position

About Twine

Twine is a leading freelance marketplace connecting top freelancers, consultants, and contractors with companies needing creative and tech expertise. Trusted by Fortune 500 companies and innovative startups alike, Twine enables companies to scale their teams globally.

Our Mission

Twine's mission is to empower creators and businesses to thrive in an AI-driven, freelance-first world.

Key Skills

Ranked by relevance

react native flutter react figma responsive android django cloud ios ai

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