We’re working with a fast-growing start-up business looking for an IOS Developer to take full ownership of the mobile layer - from SDKs used by partners to the app used by clients in their field. You’ll work at the intersection of on-device machine learning, SDK development, and real-world product deployment, delivering reliable, high-performance mobile experiences used in production environments.
Location: London - Hybrid
Responsibilities
SDK integrations & partner support
* Lead integrations with partners and clients, ensuring seamless interoperability
* Collaborate with external engineering teams to support SDK adoption
* Manage versioning, documentation, and developer support
* Maintain and extend a camera SDK with real-time image quality checks (e.g. blur, lighting, framing)
* Ensure stability, performance, and ease of integration
* Manage SDK distribution and packaging
* Deploy and optimise machine learning models for mobile (e.g. conversion, quantisation, performance tuning)
* Run real-time vision models directly on-device
* Ensure performance across a range of device types
* Maintain and improve a live iOS application
* Build features connecting mobile to backend systems via APIs
* Own authentication, networking, and custom camera workflows
CI/CD & release pipeline
* Improve build, test, and release processes
* Support ongoing delivery and maintain reliability of releases
Experience required
* Background in early-stage or fast-moving environments
* Experience as a sole or lead mobile developer, owning products end-to-end
* Proven delivery of on-device ML features in production (not just prototypes)
* Experience building and maintaining SDKs used by external developers
* Track record of maintaining live apps, shipping features, and fixing issues
* Ownership of CI/CD pipelines and release processes
* Strong expertise in Swift and native iOS development
* Experience with on-device ML frameworks (e.g. Core ML, TensorFlow Lite, ONNX Runtime)
* Model conversion and optimisation (e.g. PyTorch → mobile formats)
* SDK development and distribution
Benefits include
* Equity share options
* Employee discount platform
* Cycle to Work scheme
* 25 days annual leave + bank holidays
* Private medical insurance
We are an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
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