iOS Mobile Developer

We are working with a leading technology company that partners with the federal government on mission-critical projects. This employee-centric organization consistently wins awards for its workplace culture, focusing on innovation, Agile, and DevSecOps principles to deliver cutting-edge solutions in areas like application development, biometrics, cloud optimization, and data management.The Role Develop a real-time, on-device speech translation application for iPhones, integrating audio capture, speech recognition, translation, and text-to-speech. Own the iOS application's architecture, performance, memory management, and production releases. Integrate on-device machine learning inference frameworks (e.g., Core ML, ONNX Runtime) and manage their lifecycle. Implement and optimize the real-time audio pipeline using AVAudioEngine and manage background model delivery. Build peer-to-peer device communication for transcript sharing via MultipeerConnectivity. Ensure robust Swift concurrency across all components, avoiding data races, deadlocks, and memory issues on hardware-constrained devices.What You'll Need 5+ years of experience shipping production iOS applications using Swift. Direct experience with AVAudioEngine or AudioUnit at a low-level hardware callback level. Proven track record of integrating ML or signal-processing frameworks into iOS apps (e.g., Core ML, ONNX, TensorFlow Lite). Proficiency in memory and performance management on constrained devices using tools like Instruments. Experience with background URLSession and building resilient download/upload systems. Comfort with protocol-oriented architecture, multi-module Swift packages, and testable service layers. Ability to obtain and hold a federal security clearance, with experience in federal compliance environments being a plus.What's On Offer Generous and flexible time-off policies, along with flexible work schedules and telework options. Comprehensive career development including a mentorship program, training, and tuition reimbursement. Industry-leading benefits package, including a choice of health plans, FSA, commuter benefits, and 401K matching. Strong focus on community engagement, including company-wide support activities and volunteer time off.Apply via Haystack today!