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Programming & Development

iOS & Android Mobile App Development

12+ years of experience in mobile app development for both ios and android platforms including iPad app development
- Native iPhone/iPad, Android application development in Swift, Objective-C, Java)
- Hybrid mobile app development in React Native.
- Cross-platform development in Xamarin, Kotlin
- Others: Flutter Dart

Skills & Expertise

Android DevelopmentApp DevelopmentFlutterFlutter App DevelopmentiOS App DevelopmentiPadiPhoneJavaKotlinKotlin ProgrammingMobile App DevelopmentMobile DevelopmentNative App DevelopmentObjective-CReact NativeReact Native App DevelopmentSoftware DevelopmentSwiftSwift ProgrammingXamarin

27 Reviews for This Service

  • Jalengibbs21 says,

    If you're in need of an EXCEPTIONAL programmer, I highly recommend Jefferson Nunn! With over 30 years of experience, Jefferson is extremely knowledgeable in the field. I've had the unfortunate experience of working with other developers who boasted of their "great work", but their work was lack luster, and I was underwhelmed and wasted my money. Jefferson has helped bring my thoughts and ideas for my app to life! He's AMAZING, and the man for the job! Pros: - -Professional -Knowledgeable (over 30 years of experience. Expert level. Knows all the databases, software, and other "techy" things you need from a developer. -Phenomenal work ouput! -Returns all texts/calls within a timely manner (normally same day or within 24 hours). -Takes the time to listen and understand your ideas so he can develop exactly what you want. -Frequently asks for client feedback to ensure he's providing what you need and if you're satisfied. -Frequently informs client of any updates (normally daily or every other day, which is awesome because you never have to wonder what's going on with your project!). -Provides time frame estimates of when tasks will be completed (if he gives a time/date...the task WILL be completed by that deadline!) Cons: NONE! Hire this man if you need a developer!

    for “Streamline Live” Mobile App Project on Jan 14, 2021

  • Jalengibbs21 says,

    If you're in need of an EXCEPTIONAL programmer, I highly recommend Jefferson Nunn! With over 30 years of experience, Jefferson is extremely knowledgeable in the field. I've had the unfortunate experience of working with other developers who boasted of their "great work", but their work was lack luster, and I was underwhelmed and wasted my money. Jefferson has helped bring my thoughts and ideas for my app to life! He's AMAZING, and the man for the job! Pros: - -Professional -Knowledgeable (over 30 years of experience. Expert level. Knows all the databases, software, and other "techy" things you need from a developer. -Phenomenal work ouput! -Returns all texts/calls within a timely manner (normally same day or within 24 hours). -Takes the time to listen and understand your ideas so he can develop exactly what you want. -Frequently asks for client feedback to ensure he's providing what you need and if you're satisfied. -Frequently informs client of any updates (normally daily or every other day, which is awesome because you never have to wonder what's going on with your project!). -Provides time frame estimates of when tasks will be completed (if he gives a time/date...the task WILL be completed by that deadline!) Cons: NONE! Hire this man if you need a developer!

    for “Streamline Live” Mobile App Project on Jan 14, 2021

  • Jalengibbs21 says,

    If you're in need of an EXCEPTIONAL programmer, I highly recommend Jefferson Nunn! With over 30 years of experience, Jefferson is extremely knowledgeable in the field. I've had the unfortunate experience of working with other developers who boasted of their "great work", but their work was lack luster, and I was underwhelmed and wasted my money. Jefferson has helped bring my thoughts and ideas for my app to life! He's AMAZING, and the man for the job! Pros: - -Professional -Knowledgeable (over 30 years of experience. Expert level. Knows all the databases, software, and other "techy" things you need from a developer. -Phenomenal work ouput! -Returns all texts/calls within a timely manner (normally same day or within 24 hours). -Takes the time to listen and understand your ideas so he can develop exactly what you want. -Frequently asks for client feedback to ensure he's providing what you need and if you're satisfied. -Frequently informs client of any updates (normally daily or every other day, which is awesome because you never have to wonder what's going on with your project!). -Provides time frame estimates of when tasks will be completed (if he gives a time/date...the task WILL be completed by that deadline!) Cons: NONE! Hire this man if you need a developer!

    for “Streamline Live” Mobile App Project on Jan 14, 2021

  • Jalengibbs21 says,

    If you're in need of an EXCEPTIONAL programmer, I highly recommend Jefferson Nunn! With over 30 years of experience, Jefferson is extremely knowledgeable in the field. I've had the unfortunate experience of working with other developers who boasted of their "great work", but their work was lack luster, and I was underwhelmed and wasted my money. Jefferson has helped bring my thoughts and ideas for my app to life! He's AMAZING, and the man for the job! Pros: - -Professional -Knowledgeable (over 30 years of experience. Expert level. Knows all the databases, software, and other "techy" things you need from a developer. -Phenomenal work ouput! -Returns all texts/calls within a timely manner (normally same day or within 24 hours). -Takes the time to listen and understand your ideas so he can develop exactly what you want. -Frequently asks for client feedback to ensure he's providing what you need and if you're satisfied. -Frequently informs client of any updates (normally daily or every other day, which is awesome because you never have to wonder what's going on with your project!). -Provides time frame estimates of when tasks will be completed (if he gives a time/date...the task WILL be completed by that deadline!) Cons: NONE! Hire this man if you need a developer!

    for “Streamline Live” Mobile App Project on Jan 14, 2021

  • Jalengibbs21 says,

    If you're in need of an EXCEPTIONAL programmer, I highly recommend Jefferson Nunn! With over 30 years of experience, Jefferson is extremely knowledgeable in the field. I've had the unfortunate experience of working with other developers who boasted of their "great work", but their work was lack luster, and I was underwhelmed and wasted my money. Jefferson has helped bring my thoughts and ideas for my app to life! He's AMAZING, and the man for the job! Pros: - -Professional -Knowledgeable (over 30 years of experience. Expert level. Knows all the databases, software, and other "techy" things you need from a developer. -Phenomenal work ouput! -Returns all texts/calls within a timely manner (normally same day or within 24 hours). -Takes the time to listen and understand your ideas so he can develop exactly what you want. -Frequently asks for client feedback to ensure he's providing what you need and if you're satisfied. -Frequently informs client of any updates (normally daily or every other day, which is awesome because you never have to wonder what's going on with your project!). -Provides time frame estimates of when tasks will be completed (if he gives a time/date...the task WILL be completed by that deadline!) Cons: NONE! Hire this man if you need a developer!

    for “Streamline Live” Mobile App Project on Jan 14, 2021

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