Job Summary:
TWG AI is a company focused on driving innovation and business transformation through data and AI. They are seeking a Senior iOS Software Engineer to lead the development of their native mobile application for an AI platform, collaborating with various teams to enhance user experience and ensure high-quality code standards.
Responsibilities:
• Architect and build the iOS application using Swift and SwiftUI, establishing patterns for UI, state management, and data flow that the team can scale
• Integrate with backend AI agent services, including streaming responses, tool-call results, and multi-step workflow state
• Implement push notifications (APNs), background refresh, and local persistence to support real-time agent interactions
• Own the App Store release process end-to-end: builds, certificates, provisioning, TestFlight distribution, and production releases
• Build and maintain networking layers that handle authenticated API calls, streaming, retries, and offline resilience
• Explore and implement on-device ML capabilities, including CoreML models, NLContextualEmbedding, and audio pipelines (Whisper, TTS) where they improve the user experience
• Drive code quality and testing discipline through unit tests, UI tests, and code review
• Partner with product and design to deliver polished, accessible UI that meets the quality bar of a top-tier consumer app
• Mentor junior engineers and raise engineering standards across the mobile codebase
Qualifications:
Required:
• 5+ years of iOS development experience with Swift, including production apps in the App Store
• Deep proficiency with SwiftUI and UIKit, and strong opinions about when to use each
• Demonstrated experience with APNs, background modes, and the full App Store release lifecycle
• Strong networking fundamentals: URLSession or equivalent, REST API integration, streaming, and auth flows
• Experience building apps that interact with AI or LLM-powered backends, including streaming and stateful conversation UI
• Solid understanding of iOS memory management, performance profiling (Instruments), and crash analysis
• Experience with unit testing (XCTest) and UI testing frameworks
• Bachelor's degree in CS, Engineering, or equivalent practical experience
Preferred:
• On-device ML experience with CoreML, NLContextualEmbedding, or audio pipelines (Whisper, TTS)
• Familiarity with LLM and agent platform concepts: tool calls, multi-step workflows, prompt/response streaming
• Experience working with multi-provider LLM APIs (Anthropic, OpenAI, Google) from a mobile client
• Exposure to MCP (Model Context Protocol) server or client integration
• Experience in a multi-tenant SaaS environment with non-trivial auth (OAuth, RBAC)
• Prior experience working with Palantir Foundry is a plus
Company:
TWG AI provides enterprise AI infrastructure and systems for finance, insurance and sports organizations. Founded in 2025, the company is headquartered in Santa Monica, USA, with a team of 201-500 employees. The company is currently Growth Stage.