34,585 Objective C Developer jobs in the United States

About the job: Mobile App Developer position

How often do you get the chance to make a global impact developing the latest AI inside of the “built world”? Reconstruct's Visual Command Center (VCC) uses AI and Machine Learning inside of computer vision to track the lifecycle of large capital assets like data centers, airports, hospitals, water treatment systems, etc. Come join our team with your talents as a Mobile App Developer. Check us out at

Must be able to come into the company office in Menlo Park, CA; Chicago, IL; or Champaign, IL.

Objectives of this role

• Translate the company's vision to modify and create Reconstruct's mobile apps through clean coding
• Design the next-gen models of apps with high-quality mobile and application development
• Manage the entire evolution process of the app from ideation to execution and refinement and optimization
• Collaborate with other engineering and product team members to deliver “best in class” solutions

Responsibilities

• Build the design interface as per customers' needs and develop new features in Android & iOS
• Fix bugs and other performance issues while improving the usability of the mobile apps through periodic testing
• Collaborate with other mobile app developers, back-end and front-end developers and designers throughout the lifecycle of the apps
• Communicate with users to understand their exact requirements and delivery value to them

Required skills and qualifications

• Bachelor's degree in computer science or related technical field
• 3+ years' experience working as a mobile app developer with a variety of APIs
• Comprehensive knowledge of mobile app development
• Strong communication skills, both written and verbal & demonstrated ability to take ownership, multi-task, lead technical projects, and work independently & collaboratively
• A portfolio of previous mobile apps created and released
• Knowledge of Java, Swift or other similar programming languages

About the job: Mobile App Developer position

How often do you get the chance to make a global impact developing the latest AI inside of the “built world”? Reconstruct's Visual Command Center (VCC) uses AI and Machine Learning inside of computer vision to track the lifecycle of large capital assets like data centers, airports, hospitals, water treatment systems, etc. Come join our team with your talents as a Mobile App Developer. Check us out at

Must be able to come into the company office in Menlo Park, CA; Chicago, IL; or Champaign, IL.

Objectives of this role

• Translate the company's vision to modify and create Reconstruct's mobile apps through clean coding
• Design the next-gen models of apps with high-quality mobile and application development
• Manage the entire evolution process of the app from ideation to execution and refinement and optimization
• Collaborate with other engineering and product team members to deliver “best in class” solutions

Responsibilities

• Build the design interface as per customers' needs and develop new features in Android & iOS
• Fix bugs and other performance issues while improving the usability of the mobile apps through periodic testing
• Collaborate with other mobile app developers, back-end and front-end developers and designers throughout the lifecycle of the apps
• Communicate with users to understand their exact requirements and delivery value to them

Required skills and qualifications

• Bachelor's degree in computer science or related technical field
• 3+ years' experience working as a mobile app developer with a variety of APIs
• Comprehensive knowledge of mobile app development
• Strong communication skills, both written and verbal & demonstrated ability to take ownership, multi-task, lead technical projects, and work independently & collaboratively
• A portfolio of previous mobile apps created and released
• Knowledge of Java, Swift or other similar programming languages

A mobile app developer is responsible for designing, developing, and maintaining mobile applications for smart phones, tablets, and other mobile devices. Our organization is looking for someone who can create a mobile app for a few of our ministries to help us achieve our goal of reaching more people.

WinWinLabs is a nonprofit dedicated to providing free, high-quality education and mentorship to early-stage startups.

We're currently developing a mobile app to scale our mission and connect founders with the resources they need to succeed.

We're seeking dedicated volunteers to join our team and help us turn this vision into a reality.

Mobile App Developer (Flutter/Dart)

We are looking for a skilled Flutter developer to help us build our cross-platform mobile app from the ground up.

This is a unique opportunity to lead the technical development of a product for social good.

What You'll Get:

• Real-World Experience: Gain hands-on experience building a mobile app with a direct, positive impact.
• Mentorship: Learn from experienced professionals in the tech and nonprofit sectors.
• Networking: Connect with a community of like-minded volunteers, entrepreneurs, and mentors.
• Impact: Directly contribute to a cause that helps create jobs and innovation in your community.

Ready to Help?

If you're ready to use your skills to make a difference and help us build something amazing, we'd love to hear from you.

MOBILE APP DEVELOPER

VOLUNTEER JOB DESCRIPTION

Believe in Me seeks passionate and skilled Volunteer Mobile App Developers to join our project team dedicated to empowering first-generation college students. As a Volunteer Mobile App Developer, you will play a crucial role in developing a comprehensive mobile platform that provides support and resources to assist students in overcoming the challenges of college preparation. This platform will feature personalized guidance, college search tools, financial aid information, mentorship programs, and more, all designed to facilitate the college preparation journey for students who are the first in their families to pursue higher education.

• Collaborate with a cross-functional team to define, design, and implement new features for both iOS and Android applications, as outlined in our project roadmap and technical requirements document.
• Develop responsive and intuitive mobile applications using leading mobile development frameworks and languages such as React Native, Swift (for iOS), or Kotlin (for Android).
• Ensure seamless integration with external APIs, databases (e.g., MongoDB), and systems for functionalities like college applications, financial aid, and scholarship databases.
• Implement secure authentication, authorization practices, data encryption, and robust input validation to safeguard user data and privacy.
• Participate in the entire application lifecycle, focusing on coding, debugging, and testing.
• Contribute to the creation of scalable, maintainable, and performant software solutions.
• Assist in the preparation of project documentation, user guides, and technical materials to support application development and maintenance.

• Proven experience as a mobile app developer or in a similar role, with a portfolio of deployed projects on the App Store or Google Play Store.
• Proficiency in mobile development languages and frameworks (e.g., React Native, Swift for iOS, Kotlin for Android).
• Experience with front-end technologies (HTML, CSS, JavaScript, TypeScript) for mobile web components.
• Familiarity with server-side languages and frameworks, particularly for API development.
• Knowledge of database technology such as MongoDB and experience integrating mobile applications with external databases and APIs.
• Understanding of mobile security practices, data protection technologies, and privacy standards.
• Excellent problem-solving skills, attention to detail, and ability to work in a dynamic and collaborative team environment.
• A commitment to the mission of supporting first-generation college students and contributing to their success.

• Make a tangible impact on the lives of first-generation college students, providing essential support and resources to help them succeed.
• Collaborate with a team of equally passionate individuals about education, technology, and making a difference.
• Enhance your portfolio and gain experience by leading a significant, impactful project.
• Enjoy flexible volunteering hours, accommodating volunteers from various time zones in a fully remote position.

This is a remote volunteering position with flexible hours to accommodate volunteers from various time zones.

Interested candidates are invited to submit their resume at Please include details of your experience related to the abovementioned qualifications and share your motivation for volunteering with 1st Gen College Hub.

Join us in our mission to empower first-generation college students by leveraging your expertise and passion for technology and education. Together, we can create a platform that supports students through their college journey and inspires them to believe in their potential.

Watch our video to learn more: Believe in Me - Brand Video

• Architect and develop mobile applications (Android/iOS) that integrate on-device ML models (e.g., object detection, signal classification, anomaly detection).
• Implement secure data flows, encryption protocols, and privacy-preserving computation techniques (e.g. local inference, data minimization).
• Design apps for offline-first use cases with robust handling of degraded or disconnected networks.
• Collaborate with AI/ML engineers to optimize and deploy models using TensorFlow Lite, PyTorch Mobile, or platform-native inference engines.
• Harden applications against mobile-specific attack vectors using platform security features (e.g. Keychain/Keystore, Secure Enclave, biometrics, sandboxing).
• Interface with device sensors (e.g. GPS, Bluetooth, WiFi, camera, mic) while enforcing strict data access controls.
• Develop intuitive, mission-ready interfaces tailored for use in operational, tactical, or field-deployed scenarios.
• Participate in threat modeling, security audits, and code reviews to ensure apps meet rigorous security and privacy standards.
• Collaborate across disciplines to build, test, and deploy apps into controlled, zero-trust, or managed environments.

• Bachelor's degree in Computer Science, Engineering, or a related technical discipline.
• A minimum of three (3) years of experience in mobile development on Android (Kotlin/Java) or iOS (Swift).
• Demonstrated experience integrating or deploying ML models into mobile applications.
• Strong understanding of mobile application security principles and familiarity with OWASP Mobile Top 10.
• Experience with secure data storage (e.g. encrypted SQLite, shared preferences, or keychain/keystore).
• Familiarity with RESTful APIs, WebSocket communication, and JSON serialization.
• Working knowledge of Git and CI/CD pipelines for mobile.
• U.S. Citizenship required.

• Active TS/SCI clearance or eligibility to obtain one.
• Experience with cross-platform frameworks such as Flutter, React Native, or Capacitor.
• Hands-on experience with TensorFlow Lite, PyTorch Mobile, or CoreML.
• Familiarity with differential privacy, federated learning, or obfuscated telemetry handling.
• Experience with edge deployments, remote device management, or offline data synchronization.
• Background working in national security, defense, or highly regulated technical environments.
• Exposure to device hardening, mobile forensics, or application threat emulation.
• Prior experience building tools for privacy-conscious or surveillance-adversarial use cases.
• Contributions to secure or privacy-first open-source mobile projects.
• Experience integrating with ATAK plugins, IoT edge gateways, or specialized comms stacks.

MOBILE APP DEVELOPER
12+ months
Remote
Location: 100% remote
EST hours for l, consulting company is West Coast, so some flexibility there

Caleb Hampton

• In addition to the products they're talking about, have an IoT conneted device, hub and you can connect a bunch of other devices to it.
  • Product is being relaunched in July, this is IoT-- tons of data coming back and forth so they can help the home owner, or customer with a lot of information
    • Scheduling
    • Do you need a refill?
    • Over time push notifications, weather dat
      • Liv+ is helping diversify the products
        • Costs $2000+ depending on how many connections you have
      • Getting the right interest per customer
  • Live+
    • Been rewritten onto Rainmaker-- this should make it easier to manage the device itself and all of the aspects, hardware and firmware updates to specific devices
      • With Rainmaker, also comes with Apps, android and iOS app and to the end user it is all about the app
      • Starting to explore-- finding an app developer, who can take this over from the consulting company
        • The consulting company is very expensive
        • Has consumed more with the hardware dvices-- apps haven't gotten much of the attention
        • From a UX perspective, hasn't gotten the amount of love that it deserves
  • Need:
    • pp developer, android, iOS
      • Need to have some experience with UX as well
      • Rainmaker experience would be beneficial as well
        • Need to understand how the app hooks into Rainmaker
      • No need for specific libraries
      • No freelance work experience, need someone with some structure-- need someone who can help figure out how to manage an app and should they need testing? Etc.
      • This has been owned by the Engineering and Product team
        • Now getting to market and since there's been a lot of challenges, pulled Caleb in to work with the App
        • CEO is sponsoring this cross-functional initiative-- now they have the product there, how do they accelerate, bring to market-- need the app to take off
      • Working with
        • The engineering team and the product teams
          • 1-2 of the Engineers and one associate on the Product team
            • Did some usability testing 6ish months

• Translate the company's vision to modify and create Reconstruct's mobile apps through clean coding
• Design the next-gen models of apps with high-quality mobile and application development
• Manage the entire evolution process of the app from ideation to execution and refinement and optimization
• Collaborate with other engineering and product team members to deliver "best in class" solutions

• Build the design interface as per customers' needs and develop new features in Android & iOS
• Fix bugs and other performance issues while improving the usability of the mobile apps through periodic testing
• Collaborate with other mobile app developers, back-end and front-end developers and designers throughout the lifecycle of the apps
• Communicate with users to understand their exact requirements and delivery value to them

• Bachelor's degree in computer science or related technical field
• 3+ years' experience working as a mobile app developer with a variety of APIs
• Comprehensive knowledge of mobile app development
• Strong communication skills, both written and verbal & demonstrated ability to take ownership, multi-task, lead technical projects, and work independently & collaboratively
• A portfolio of previous mobile apps created and released
• Knowledge of React Native, Java, Swift or other similar programming languages