freehire launches on Product Hunt on 26 August.

Follow →

iOS Mobile Developer (Swift)

Summary

Build a real-time, on-device speech translation iOS app using Swift, Core ML, and AVAudioEngine for a federal mission environment.

iOS Mobile Developer, #1084

iOS Engineer — On-Device Translation Platform | DHS/ICE Mission Environment

What You'll Build

A real-time speech translation app that runs entirely on-device: audio capture → speech recognition → translation → text-to-speech, coordinated across multiple services on hardware-constrained iPhones. You'll integrate vendor-provided ML models, manage background OTA model delivery from AWS, build peer-to-peer device communication, and ship to production through a federal accreditation pipeline.

What You'll Own

  • The iOS application: architecture, performance, memory management, and production releases
  • Integration of on-device ML inference frameworks (Core ML, ONNX Runtime, WhisperKit) — loading, lifecycle, error recovery — not training the models
  • Real-time audio pipeline: AVAudioEngine, voice activity detection, buffer management at hardware-thread priority
  • Background model delivery: resumable multi-file downloads over URLSession, state persistence, network transition handling
  • Peer-to-peer transcript sharing between devices via MultipeerConnectivity
  • Swift concurrency across all of the above without data races, deadlocks, or jetsam kills on 6GB devices

What You Bring

  • 5+ years shipping production iOS apps in Swift
  • Direct experience with AVAudioEngine or AudioUnit at the hardware callback level
  • Track record integrating ML or signal-processing frameworks into iOS apps (Core ML, ONNX, TensorFlow Lite, or similar)
  • Proficiency managing memory and performance on constrained devices using Instruments
  • Experience with background URLSession and resilient download/upload systems
  • Comfort with protocol-oriented architecture, multi-module Swift packages, and testable service layers
  • Ability to hold a clearance and work in a federal compliance environment (FISMA experience is a plus, not a requirement — you'll have security and compliance teammates)

The estimated salary range for this position is $100,000 - $160,000. This salary range is not a guarantee of compensation. The offered salary will be based on factors including relevant experience, geographic location, internal equity, and applicable contractual requirements. *Compensation may fall outside this range when appropriate.

Who We Are

Dev Technology is a growing IT company with an employee-centric culture that works on mission-critical projects for the federal government. We partner with our federal customers to deliver technology services and solutions, and to drive our client’s missions forward through innovation. We use Agile and DevSecOps principles to provide services including application development, biometrics and identity management, cloud and infrastructure optimization, IT and legacy modernization, and data management.

As a Washington Post Top Workplace award winner for the past THIRTEEN years in a row, the Top Workplaces USA for the past five years, and a recipient of the Companies As Responsive Employers (CARE) Award for the past six years, Dev Technology employees enjoy:

  • Generous and flexible time-off policy
  • Flexible work schedules and telework options, including remote work availability for eligible projects
  • Career development opportunities including a mentorship program, technical and management training through Dev University, hands-on learning through DevLab, tuition reimbursement, and paid training opportunities
  • Industry-leading benefits including a choice of two health plans that include dental and vision, flexible spending account, commuter benefits, life insurance, and more
  • 401K matching with a 5% matching contribution
  • Regular team and company social events including our annual party, happy hours, fitness challenges, and more
  • A focus on community engagement including company wide support activities, employer match for donations, and time off for volunteer efforts
  • To learn more about working at Dev Technology, visit Working At Dev Technology Group

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Dev Technology Group operates in the following states: AL, AR, AZ, CO, DC, FL, GA, ID, IL, IN, MD, MA, ME, MI, MN, MO, MS, NC, NJ, OH, OR, PA, SC, TN, TX, VA, WV.

SMS Terms and Privacy Notice

Dev Technology Group offers you the option to engage in SMS text conversations about your job application. By participating, you also understand that message frequency may vary depending on the status of your job application, and that message and data rates may apply. Please consult your carrier for further information on applicable rates and fees. Carriers are not liable for delayed or undelivered messages. Reply STOP to cancel and HELP for help. By opting-in to receiving SMS text messages about your job application, you acknowledge and agree that your consent data, mobile number, and personal information will be collected and stored solely for the purpose of providing you with updates and information related to your job application. No mobile information will be shared with third parties/affiliates for marketing/promotional purposes. All the above categories exclude text messaging originator opt-in data and consent; this information will not be shared with any third parties.

What this application asks

greenhouse

First Name, Last Name, Email, Phone, Resume/CV, Cover Letter, Location

  • This position involves working on a contract for the US Government. The US Government requires US citizenship for this position. **NOTE: This position cannot support a Work Visa or Green Card status.  Providing false information regarding your US Citizenship status on this application will result in your application being rejected for this opportunity. Can you meet this requirement? choose one
  • This position supports our ICE (U.S. Immigration and Customs Enforcement) contract. Are you comfortable working in a role that supports this customer? choose one
  • If you currently hold a clearance, please indicate which security clearance you currently hold: choose any
  • Dev Technology requires all candidates who receive a verbal offer to successfully complete an identity verification before a written offer can be issued. Are you willing to complete this required step of the hiring process? choose one
  • Do you have a minimum of a Bachelor’s degree in Computer Science, Software Engineering, Information Systems, Cybersecurity, or a closely related field? choose one
  • Do you have 5+ years of experience shipping production iOS apps in Swift? choose one
  • Do you have experience with AVAudioEngine or AudioUnit at the hardware callback level? choose one
  • Please briefly describe your experience integrating ML or signal-processing frameworks into iOS apps. written answer
  • As part of our final interview and identity-verification process, candidates may be required to attend an in-person interview at Dev Technology’s headquarters in Reston, Virginia. Any travel reimbursement would be determined on a case-by-case basis and must be approved in advance. If selected for an in-person interview, are you willing and able to participate? choose one
  • Please acknowledge the following: All new hires are asked to come onsite to our Reston, VA headquarters for orientation. Are you able to meet this requirement? choose one
  • Please provide your salary expectations for this role.
  • Please list all your active professional certifications. written answer
  • LinkedIn and/or GitHub Profile URL optional
  • Fully Remote position candidates must have a primary address in one of the following states: AL, AR, AZ, CO, DC, FL, GA, ID, IL, IN, MD, MA, ME, MI, MN, MO, MS, NC, NJ, OH, OR, PA, SC, TN, TX, VA, WV. Can you meet this requirement? choose one
  • If No, are you willing to relocate to one of the above locations: choose one · optional
  • Street Address written answer
  • City
  • State choose one
  • Zip
  • I understand that submitting an application does not constitute an offer of employment. If I receive an offer from Dev Technology, the offer will be contingent upon my successful completion of all applicable pre-employment requirements. These requirements may include a background check conducted through HireRight and the successful completion of any required government, agency, or client suitability, public trust, or security clearance process. I understand that I may not begin employment until all required pre-employment conditions have been satisfied and Dev Technology has confirmed that I am authorized to start work. I agree to provide accurate information and promptly complete any documentation or actions required to support these processes. I have read and understand the pre-employment requirements described above. choose one
  • By selecting YES, I consent to receive recruiting SMS messages from Dev Technology Group at the phone number provided on my job application. Note: Selecting “no” will not eliminate you from consideration for this role. View our Privacy & SMS Policy at the bottom of our job postings at www.devtechnology.com/careers. choose one

See also