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Quantum Code Solution

@SidUSA

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5.0
4

3.5

3.5

100%

Mobile App, Web, IoT, Cybersecurity Agency

$25 USD / Hour

Flag of UNITED STATES

United States (12:33 PM)

Joined on December 16, 2025

2 Recommendations

$25 USD / Hour

Quantum Code Solutions is a software development agency specializing in Mobile App Development, Web Development, IoT, Embedded Systems, SaaS, CRM, AI, Cybersecurity, Automation, AR/VR and Game Development. We take on complex, unusual and technically challenging projects that other developers avoid. If your project seems impossible, highly customized, difficult to integrate, or another developer couldn't finish it, bring it to us. We analyze the problem, engineer the solution and deliver with confidence. 📱 Mobile App Development Expert iOS, Android and cross-platform development using React Native, Flutter, Swift, SwiftUI, Kotlin, Java and Expo. We build MVPs, startup apps, enterprise apps, SaaS apps, marketplaces, eCommerce, healthcare, fintech, social, booking, delivery, streaming and real-time applications. Services include UI/UX, API integration, REST API, GraphQL, Firebase, WebSockets, push notifications, payments, subscriptions, GPS, Bluetooth/BLE, NFC, authentication, security, optimization, debugging, maintenance, App Store submission and Google Play publishing. 🌐 Web & SaaS Development Full-stack web applications, SaaS platforms, CRM systems, dashboards, portals, marketplaces and custom business software using React.js, Next.js, Vue.js, Nuxt.js, JavaScript, TypeScript, Node.js, NestJS, Express, PHP, Laravel, Python, Django and FastAPI. Expertise includes frontend, backend, API development, databases, cloud applications, multi-tenant SaaS, subscription platforms, eCommerce, automation, AWS, Azure, Google Cloud and Firebase. 🔌 IoT & Embedded Systems We build complete IoT solutions, from hardware and firmware to cloud platforms, APIs, dashboards and mobile apps. Expertise includes IoT, Industrial IoT, IIoT, embedded systems, firmware, Arduino, ESP32, ESP8266, Raspberry Pi, STM32, sensors, BLE, Wi-Fi, MQTT, TCP/IP, UART, SPI, I2C, GPIO, telemetry, device management, remote monitoring and device-to-cloud communication. 🔐 Cybersecurity Security-focused development including web security, mobile security, API security, authentication, authorization, OAuth, JWT, encryption, secure coding, OWASP, vulnerability assessment, security hardening, access control, cloud security, IoT security and secure architecture. 🤖 AI, Automation, AR/VR & Games We also develop AI applications, AI integrations, chatbots, LLM solutions, workflow automation, Unity games, Unreal Engine, AR, VR, XR, Metaverse and interactive experiences. 🚀 Why Quantum Code Solutions? We don't run from difficult projects. We run toward them. The work nobody wants to touch. The integration everyone says is too complicated. The application another developer couldn't finish. The legacy system that needs rescuing. The hardware that needs custom software. That's our kind of project. From architecture and development to testing, security, deployment and maintenance, we build technology that works in the real world.

Expert Mobile App Developer Needed to Publish Existing Android & iOS App to Google Play & Apple App Store (AI Laundromat App)

I was extremely stressed about publishing my app for several days, but the team at Quantum Code Solutions made the entire process quick and hassle-free at a very reasonable price. They took great care of my app throughout the publishing process and kept everything smooth from start to finish. I was able to relax knowing my project was in good hands. I highly recommend Quantum Code Solutions to anyone looking for reliable and professional services.

Flag of PAKISTAN

Zain

@zainulabidin13

July 2026

Verifications

On time

100%

On budget

100%

Accept rate

88%

Repeat hire rate

20%

Portfolio

Portfolio

All
Mobile App Design (5)
Website Design (3)
13907822
13907810
13907800
13840460
13829507
13829496
13907822
13907810
13907800
13840460
13829507
13829496
5.0 · 4 Reviews
4 Reviews
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Flag of PAKISTAN

Zain

5.0

$20 USD

23 days ago

Apple ASO Keyword Optimization

The work is remaining but they are doing a great job. Thanks once again

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Flag of PAKISTAN

Zain

5.0

$20 USD

25 days ago

Real-time AI Sales Coaching App

Another great collaboration with a great team. Tested my app very quickly.

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Flag of PAKISTAN

Zain

5.0

$25 USD

25 days ago

Expert Mobile App Developer Needed to Publish Existing Android & iOS App to Google Play & Apple App Store (AI Laundromat App)

I was extremely stressed about publishing my app for several days, but the team at Quantum Code Solutions made the entire process quick and hassle-free at a very reasonable price. They took great care of my app throughout the publishing process and kept everything smooth from start to finish. I was able to relax knowing my project was in good hands. I highly recommend Quantum Code Solutions to anyone looking for reliable and professional services.

Share

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Flag of ARGENTINA

Konstantin

5.0

$13 USD

4 months ago

iOS Barcode Scanner Testing

Professional work with fast execution to test my app in iOs

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Experience

Mobile app developer

Jan, 2024 - Jan, 2025

1 year

SPECTRUM VASCULAR

Jan, 2024 - Jan, 2025

1 year

- Build iOS and Android apps with intuitive UI/UX, IoT integration, and wireless communication (WiFi, BLE, LoRa, Zigbee, Cellular, Sigfox, Ethernet). - Backend & API Integration; Develop robust backends, integrate Web APIs, FHIR/HL7, EMS, MQTT, and SDKs like Google Maps, In-App Billing, and Facebook. - Quality & Maintenance: Deliver production-ready apps with testing, performance optimization, ongoing maintenance, and database support (MongoDB, PostgreSQL) using modern deployment tools.

Flag of UNITED STATES

Hybrid, United States

Jan, 2024 - Jan, 2025

1 year

Fintech Application Developer | Mobile | Web | Desktop

Jan, 2022 - Jan, 2024

2 years

PROJECT MANAGEMENT INSTITUTE

Jan, 2022 - Jan, 2024

2 years

What I Deliver: - Scalable SaaS platforms with microservices architecture and API-driven design. - Fintech and enterprise solutions ISO, GDPR, and HIPAA standards. Cloud-native applications on Azure & AWS for performance, resilience, and cost efficiency. Why Clients Choose Me: - Proven Results: Delivered SaaS, fintech, and enterprise apps actively used by businesses. - Transparent updates and reliable timelines. - Quality & Trust: Every project treated like my own, with performance, security.

Flag of UNITED STATES

Hybird, United States

Jan, 2022 - Jan, 2024

2 years

Senior Flutter Developer

Jan, 2012 - Jan, 2022

10 years

SIVANTOS INC.

Jan, 2012 - Jan, 2022

10 years

- Develop high-performance, cross-platform Flutter apps for Android, iOS, tablets, and PCs using Dart, Firebase, REST/GraphQL, and AWS. - Implement rich features: chat, push notifications, payments, location services, camera, QR/barcode scanning, analytics, and secure authentication. - Design and manage databases (Firestore, MySQL, MongoDB, DynamoDB, Redis) for scalable, offline-ready, production-grade applications.

Flag of UNITED STATES

Hybrid, United States

Jan, 2012 - Jan, 2022

10 years

Education

University of Central Oklahoma

2016 - 2018

2 years

Master of Computer Science (MSCS), Computer science

Flag of UNITED STATES

United States

2016 - 2018

2 years

University of Central Oklahoma

2003 - 2007

4 years

Bachelor of Computer Science (BCompSc)

Flag of UNITED STATES

United States

2003 - 2007

4 years

Qualifications

Native Android Developer | Kotlin

2020

Amazon Web Services

I am certified Android App Developer from AWS

2020

Mobile App Developer

2020

Google Workspace

Just got a certification for Mobile App Developer from google Garage

2020

Certifications

P

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Freelancer Orientation

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