Robert Half have partnered with a Sports Manufacturing organisation based in London who are looking to engage an experienced Mobile Engineer (iOS & Android) to support the continued evolution of a mobile‑first international platform.
This is an initial 6‑month, Inside IR35 contract, focused on building and scaling mobile features that support real‑time interactions, transactional user journeys, and international expansion.
Responsibilities:
* Developing and maintaining mobile features across iOS and Android platforms
* Building functionality to support live interactions and purchasing workflows
* Implementing localisation capabilities including language, currency, and region‑specific UX
* Ensuring parity and consistency between mobile and web experiences
* Integrating mobile applications with backend services via GraphQL APIs
* Optimising application performance, reliability, and stability in real‑time environments
* Working closely with backend and frontend engineering teams to deliver shared features
* Contributing production‑ready, maintainable mobile code
Skills:
* Proven experience working as a Mobile Engineer on consumer‑facing applications
* Strong hands‑on experience with iOS (Swift) and/or Android (Kotlin)
* Experience integrating with GraphQL‑based APIs
* Experience building transactional, pricing, or e‑commerce‑driven user journeys
* Strong understanding of mobile performance optimisation and stability best practices
* Comfortable working in fast‑paced, evolving product environments
* Excellent collaboration and communication skills when working within cross‑functional teams
Contract:
* Initial 6‑month contract with potential to extend
* Inside IR35
* London‑based assignment with 3 days per week onsite