Lead iOS Mobile Applications Developer

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
iOS camera SDK ownership
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
On-device ML deployment
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
Mobile app ownership
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, Tensor

Flow Lite, ONNX Runtime)
Model conversion and optimisation (e.g. Py

Torch → 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

For further information on this IOS Developer role apply below..

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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