Principal iOS Mobile Developer (Swift)

Location: Reston, Virginia

Salary: $100,000–$160,000 per year

Company

hirify.global delivers application development, biometrics and identity management, cloud and infrastructure optimization, IT modernization, and data management services for federal government customers.

What you will do

• Architect, optimize, and release the iOS application for production.
• Integrate on-device ML inference frameworks including Core ML, ONNX Runtime, and WhisperKit without training models.
• Build real-time audio pipelines with AVAudioEngine, voice activity detection, and hardware-priority buffer management.
• Implement resumable background model downloads using URLSession, including state persistence and network transition handling.
• Enable peer-to-peer transcript sharing between devices through MultipeerConnectivity.
• Apply Swift concurrency across constrained devices and support releases through a federal accreditation pipeline.

Requirements

• 8+ years of experience shipping production iOS applications in Swift.
• Direct experience with AVAudioEngine or AudioUnit at the hardware callback level.
• Experience integrating ML or signal-processing frameworks into iOS applications.
• Strong memory and performance optimization skills on constrained devices using Instruments.
• Experience with background URLSession and resilient download or upload systems, plus protocol-oriented architecture and multi-module Swift packages.
• Ability to hold a security clearance and work in a federal compliance environment.

Nice to have

• FISMA experience.

Culture & Benefits

• Generous and flexible time-off policy.
• Health plans with dental and vision coverage, flexible spending account, commuter benefits, and life insurance.
• 401(k) matching with a 5% matching contribution.
• Mentorship, technical and management training, hands-on learning, tuition reimbursement, and paid training opportunities.
• Flexible work schedules and telework options may be available for eligible projects.
• Community engagement programs, donation matching, volunteer time off, and company social events.