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Quantum Code Solution

@SidUSA

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5.0
1

0.2

0.2

100%

Quantum | Full-Stack Web, Mobile & AI Agency

$25 USD / Hour

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United States (11:04 AM)

Joined on December 16, 2025

2 Recommendations

$25 USD / Hour

Quantum Code Solutions | Premier Mobile, Web, CRM, SaaS, and Game Development Agency Welcome to Quantum code Solutions, where innovation meets expertise. We specialize in delivering top-notch solutions in Mobile App Development, Web Applications, CRM Systems, SaaS Platforms, and Game Development. Our team combines creative vision with technical mastery to build scalable, high-performing digital products that drive success. Our Core Services: 1. Mobile App Development & Publishing We create feature-rich, high-quality mobile apps for iOS and Android using frameworks like React Native, Flutter, Swift, and Kotlin. From initial concepts to app publishing, we guide you every step of the way, ensuring seamless deployment to the App Store and Google Play. 2. Web App Development & Design Our custom web applications are built for performance, scalability, and security using advanced technologies like React.js, Next.js, Vue.js, Nuxt.js, PHP, Laravel, and Node.js. We prioritize responsive design and intuitive interfaces to elevate user experiences. 3. CRM Development & Management Streamline your operations and enhance customer interactions with our tailored CRM solutions. We design systems that integrate effortlessly into your existing processes, driving efficiency and growth. 4. SaaS Development We build powerful, scalable SaaS platforms using leading technologies like MERN, MEAN, PERN, and MEVN stacks. Our focus is on creating efficient, user-friendly applications that deliver seamless performance. 5. Game Design & Development From immersive 2D/3D game design to AR, VR, and Metaverse experiences, we craft engaging gaming solutions using Unity and Unreal Engine. We also specialize in interactive kiosks and gamified experiences across platforms. 6. AR/VR and Metaverse Development Enter the future with our cutting-edge AR, VR, and Metaverse solutions. Whether it’s virtual storefronts, AR marketing campaigns, or metaverse platforms, we bring your immersive ideas to life. 7. IoT & Firmware Development We build smart IoT solutions and embedded firmware for connected devices using platforms like Arduino, ESP32, Raspberry Pi, and STM32, enabling seamless hardware-software integration. 8. PLC Programming & Automation We develop and optimize PLC systems for industrial automation using Allen Bradley, Siemens, and Schneider, focusing on efficient ladder logic and reliable process control. 9. Embedded Systems Development We create custom embedded solutions for smart devices and industrial applications, ensuring efficient, low-latency, and high-performance hardware integration. At Quantum Code Solutions, we deliver user-centric, innovative, and future-ready solutions to keep your business ahead in the digital race. Let’s build something extraordinary together.

iOS Barcode Scanner Testing

Professional work with fast execution to test my app in iOs

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Konstantin Z.

@konstantinz1

April 2026

Verifications

On time

100%

On budget

100%

Accept rate

75%

Portfolio

Portfolio

All
Mobile App Design (5)
Website Design (3)
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13840460
13829507
13829496
13907822
13907810
13907800
13840460
13829507
13829496
5.0 · 1 Review
1 Review
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Konstantin Z.

5.0

$13 USD

2 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.

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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.

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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.

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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

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United States

2016 - 2018

2 years

University of Central Oklahoma

2003 - 2007

4 years

Bachelor of Computer Science (BCompSc)

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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

Preferred Freelancer Program SLA

Freelancer Orientation

Freelancer Orientation

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