Job Openings >> Senior Mobile Application Engineer
Senior Mobile Application Engineer
Title:Senior Mobile Application Engineer
Location:Costa Mesa


Are you ready to slay each day in a position that perfectly suits your skills at a company that rewards passion, creativity and innovation? Because Ultra/Mint Mobile is looking for our next extraordinary Senior Mobile Application Engineer to level up our Apps Team in Costa Mesa!

You’ll be leading a small, talented team of mobile application developers to build best in class iOS and Android applications for both Ultra Mobile and Mint Mobile. From mentoring junior team members, to making important architectural decisions, you will play an integral role in elevating our existing apps program. Proficient in either iOS or Android development (or both), you will take a hands-on approach, participating in regular development sprints. You will also play a strategic role, helping guide our apps roadmap and vision. As mobile applications are a critical component of Ultra/Mint Mobile’s product roadmap, this is a great opportunity to play an impactful role at an exciting time for the business.

At Ultra Mobile, you'll join a talented squad in an exciting and evolving industry that will hone your skills, nurture your growth, and offer career development opportunities abound (that means a lot!). We can offer you a fast-paced and driven working environment with challenging work, Fortune 500-style benefits, and great colleagues as well as career development opportunities.


As Senior Mobile Application Engineer, your usual day of awesomeness will include:

  • Drive architectural design decisions for best-in-class iOS and Android apps.
  • Develop, maintain, and extend our current apps, written in Swift, Kotlin, and React Native.
  • Work to improve and extend our current backend systems and APIs.
  • Lead, discuss, and strategize our Apps technical roadmap.
  • Understand how to balance technical objectives with business priorities.
  • Research and develop proof of concepts exploring new technologies and techniques.


  • Swift
  • Kotlin
  • Java
  • iOS SDK
  • Android SDK
  • JavaScript (various forms)
  • Git
  • Docker and Kubernetes
  • React Native
  • Rest APIs and JSON
  • Microservices


  • Proficiency in iOS or Android development; some experience with both is preferred
  • 4-8 years’ experience working in software development
  • Passionate about the end user experience to a fault!
  • Self Motivated and Self Starter
  • Loves mentoring junior members of the team
  • Knowledgeable and experienced in the latest user interface design patterns
  • Leadership with testing, continuous integration, build management for iOS/Android
  • Bachelor’s degree in computer science or related field
  • Ability to express yourself clearly and work well with others
  • Experience in multiple languages, frameworks and technologies
  • Knowledge of targeting and supporting a wide variety of Android devices
  • Strong understanding of various development approaches (MVP, MVVM, VIPER, etc)


Ultra Mobile and Mint Mobile. Our two brands are basically the Batman and Superman of the wireless industry, saving our customers from our overpriced competitors with incredible prices and premium wireless service. We are inventors and innovators who believe in owning the outcome of everything we do, being action-based, and embracing the journey we’re on as a team.


We harness the power of innovation in the telecommunications industry with the nation’s fastest, most-advanced 4G LTE network served up at the best prices. Ultra serves the international community residing in America with low-cost plans that include unlimited global text and international calling to 80 destinations. Mint, our online only brand, is disrupting the digital sphere with big bulk savings on 3, 6 or 12-month plans catered to the domestic user. Together, both brands connect people everyday, everywhere with the click of a button…er touchscreen.

Does this position sound like someone you know? If you’re the person for the job, apply! If we don’t seem to be the right fit, refer a friend or colleague or that person that lives down the street and you can get $1,000. Just send an email to with

  1. Your name
  2. Their resume or link to their LinkedIn page

If we hire them and they stay for 90 days, you get $1,000 dollars! For more details on restrictions and rules, please email 

This opening is closed and is no longer accepting applications
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