---
title: 'Principal iOS Mobile Developer (Swift) at Dev Technology'
canonical: 'https://feeny.ai/job/principal-ios-mobile-developer-swift-dev-technology-reston-1jk3bf32w0w7'
type: 'job'
last_seen: '2026-09-07'
---

# Principal iOS Mobile Developer (Swift) at Dev Technology

- **Company:** Dev Technology
- **Location:** Reston, VA
- **Work type:** remote
- **Posted:** 2026-09-04
- **Last confirmed live:** 2026-09-07
- **Apply:** https://job-boards.greenhouse.io/devtechnology/jobs/8779855002

## Job description

iOS Mobile Developer, #1110

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

- 8+ 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](https://devtechnology.com/working-at-dev/)

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.

## About Dev Technology

## Company Overview
- **One-liner**: Dev Technology is an employee-owned IT services firm that designs and delivers mission-driven technology solutions for U.S. federal government agencies.
- **Entity Type**: Private (Employee-Owned)
- **Headquarters**: Tysons Corner, Virginia, USA
- **Founded**: 1998
- **Founders**: Not publicly available

## Core Business
- **Primary Industry**: Government IT Services & Consulting (GovCon)
- **Target Customers**: U.S. federal government agencies, including homeland security, law enforcement, defense, and civilian agencies (e.g., DHS, CBP, ICE, TSA, USDA, DOI).
- **Mission Statement**: "Designing mission-driven IT solutions for the government to meet its needs through full-stack development, no-code/low-code solutions, and specialized services across data, biometrics, and artificial intelligence."

## Products & Services
- **Full-Stack Application Development**: Custom software development using Java, Angular, Golang, .NET, and Azure.
- **Data Analytics & AI**: Senior data analysts, technical project managers, and AI/ML solutions for government missions.
- **Microsoft / M365 Services**: Administration, Teams Phone, SharePoint, Power Platform, and front-end web publishing.
- **Systems Engineering**: Platform infrastructure engineering, MQ engineering, and serverless architecture (AWS).
- **Database Development & Administration**: Database development and administration for secure government systems.
- **Biometrics & Identity Solutions**: Specialized services in biometrics and identity management for law enforcement and security agencies.
- **Low-Code/No-Code Solutions**: Rapid application development using low-code/no-code platforms to meet government needs.

## Market Standing
- **Valuation**: Not disclosed (private, employee-owned)
- **Key Metric**: Employee-owned; over 500 employees (estimated based on job board and industry presence)
- **Notable Clients**: U.S. Customs and Border Protection (CBP), U.S. Immigration and Customs Enforcement (ICE), Transportation Security Administration (TSA), Student and Exchange Visitor Program (SEVP), and other federal agencies.
- **Awards & Recognition**:
  - The Washington Post Top Workplace Award (12 years in a row)
  - Top Workplaces USA 2025, 2026
  - 2025 Top Employers for Interns Award
  - OrangeSlices’ 2025 Elev8 GovCon Honoree
  - AnitaB.org Top Companies for Women Technologists Award (multiple years)
  - Northern Virginia Family Service CARE Award Winner (2023, 2024)
- **Growth Signals**: Consistent award wins, expanding job postings across AI, data analytics, and M365 services, and a strong reputation in the GovCon space.

## Competitive Advantages
- **Employee Ownership**: Being employee-owned fosters a strong culture of accountability and shared success, which is rare in the GovCon sector.
- **Deep Government Expertise**: Over 25 years of experience serving federal agencies, with specialized knowledge in security, biometrics, and compliance.
- **People-First Culture**: Consistently recognized as a top workplace, with a focus on employee well-being, mentorship, and professional development.
- **Diverse Mission Portfolio**: Supports a wide range of missions—from homeland security to cultural preservation—providing employees with meaningful, varied work.
- **Strong Retention & Awards**: Longevity of awards (12 years of Top Workplace) indicates high employee satisfaction and low turnover.

## Strategic Focus
- **Expanding AI & Data Analytics**: Actively hiring senior data analysts, technical project managers, and AI specialists to meet growing government demand for data-driven solutions.
- **Modernizing Government IT**: Focus on cloud migration (AWS, Azure), serverless architectures, and modernizing legacy systems with low-code/no-code platforms.
- **Strengthening Microsoft/M365 Practice**: Growing a dedicated team for Microsoft 365 administration, Teams, SharePoint, and Power Platform services.
- **Talent Development**: Continued investment in internship programs, mentorship, and training to build a pipeline of cleared talent.

## Why Work Here
- **Culture**: Employee-owned and people-first; described by employees as a "family." Strong emphasis on collaboration, mission-driven work, and individual growth.
- **Work Model**: Hybrid and remote-first options available, with offices in Tysons Corner, VA; Reston, VA; Herndon, VA; Ashburn, VA; Arlington, VA; Colorado Springs, CO; and Annapolis Junction, MD. Many roles require U.S. citizenship and security clearance.
- **Benefits**:
  - Flexible Time Off (FTO)
  - 401(k) with company match
  - Student Loan Reimbursement (unique perk)
  - Volunteer Time Off (VTO)
  - Comprehensive health and wellness benefits
  - Training & Development programs
  - Mentorship Program
  - Women in Technology employee resource group
- **Engineering Culture**: Focus on full-stack development, cloud engineering, and data analytics. Engineers work on high-impact projects for national security and public service. Encourages self-awareness and collaboration.
- **Recognition**: Multiple "Top Workplace" awards, including 12 consecutive years from The Washington Post, indicating a consistently positive employee experience.

## Sources
1. [Dev Technology Official Website](https://devtechnology.com/)
2. [Dev Technology Working at Dev](https://devtechnology.com/working-at-dev/)
3. [Dev Technology About](https://devtechnology.com/about/)
4. [Dev Technology Careers](https://devtechnology.com/careers/)
5. [Dev Technology Jobs on Greenhouse](https://job-boards.greenhouse.io/devtechnology)
6. [Dev Technology Jobs on Greenhouse (specific listing)](https://job-boards.greenhouse.io/devtechnology/jobs/8515723002)

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