What is your typical project timeline?

Most projects take 4-12 weeks depending on complexity. We provide detailed timelines during the discovery phase and follow agile sprints with weekly deliverables. For MVPs and simpler projects, we can often deliver in 2-4 weeks. Larger enterprise solutions may take 3-6 months.

Do you offer ongoing maintenance and support?

Yes. All projects include 30 days of post-launch bug fixes with SLA-backed response times. We also offer monthly maintenance packages starting at $500/month for ongoing updates, 24/7 monitoring, and feature enhancements. Our global support includes security patches, dependency updates, performance optimization, and technical guidance. We provide support across all time zones for clients in USA, Europe, Middle East, Asia-Pacific, and worldwide.

What technologies do you specialize in?

We specialize in the JavaScript ecosystem for web and mobile: React, Next.js, Node.js, Express, MongoDB, and TypeScript. For mobile app development, we excel in React Native, Flutter, Swift (iOS), and Kotlin (Android). We also work with PostgreSQL, Redis, Firebase, AWS, Google Cloud, Docker, and modern DevOps tools. Our tech stack is chosen for performance, scalability, and long-term maintainability across all platforms.

Can you work with our existing codebase?

Absolutely. We frequently take over existing projects, refactor legacy code, and add new features to established applications. We'll perform a thorough code audit, provide recommendations, and create a plan to improve and extend your existing system.

Do you sign NDAs and protect intellectual property?

Yes. We sign NDAs before starting any project and ensure all intellectual property rights are transferred to you upon project completion. Your code, designs, and data are 100% yours. We maintain strict confidentiality and security protocols.

What are your payment terms?

Typically 30% upfront, 40% at mid-project milestone, and 30% upon completion. For larger projects over $25,000, we can structure monthly payments. All payments are secure, invoiced professionally, and we accept bank transfers, PayPal, and Stripe.

Do you provide design services?

Yes. We offer complete UI/UX design services from wireframes to high-fidelity mockups, or we can work with your existing designs. Our development includes responsive design implementation, accessibility compliance, and modern design patterns as standard.

Can you help with hosting and deployment?

Yes. We handle complete deployment to global cloud platforms (AWS, Google Cloud, Azure, Vercel, Cloudflare) with multi-region support for worldwide performance. We set up CI/CD pipelines, configure SSL certificates, CDN delivery, and provide hosting recommendations based on your traffic, budget, and target markets. Our deployment expertise covers USA, Europe, Middle East, Asia-Pacific regions, and worldwide infrastructure. We also offer managed hosting as an optional service.

What makes Vertex Stack different from other developers?

We focus on enterprise-grade code quality, transparent communication, and building truly scalable solutions for global markets. With 100+ successful projects delivered across USA, Canada, UK, Australia, Europe, and the Middle East, we bring proven international experience. Unlike freelancers who might disappear, we're an established company committed to long-term partnerships with flexible time zone coverage and 24/5 availability. Our clients worldwide appreciate our technical depth, proactive problem-solving, and professional approach to web and mobile app development.

Do you work with startups?

Yes! We specialize in MVP development for startups and understand the importance of speed-to-market while building scalable foundations. We offer flexible payment terms for early-stage startups and can even discuss equity arrangements for the right projects.

Available for new projects

VERTEX STACK

Engineering Excellence at Every Level

Award-winning full-stack web development, native iOS & Android apps, cross-platform mobile development with React Native & Flutter, custom enterprise software, and scalable SaaS platforms for businesses across USA, Canada, UK, Australia, Europe, Middle East (UAE, Saudi Arabia, Qatar), and worldwide.

React•Next.js•Node.js•React Native•Flutter•TypeScript

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Who We Are

Vertex Stack is an award-winning web and mobile app development company specializing in building enterprise-grade applications that scale globally. With 10+ years of experience and 100+ successful projects delivered across USA, Canada, UK, Australia, Europe, Middle East (UAE, Saudi Arabia, Qatar, Kuwait, Bahrain), and worldwide, we partner with businesses to transform ideas into production-ready, scalable solutions.

Our expertise spans full-stack web development, native mobile app development, and cross-platform development, with deep specialization in React, Next.js, Node.js, React Native, Flutter, TypeScript, and modern cloud infrastructure (AWS, Google Cloud, Docker).

We don't just write code—we build scalable architectures, implement agile development methodologies, follow enterprise-grade best practices, and deliver custom software solutions that stand the test of time with ongoing support and maintenance.

Years Experience

Projects Delivered

100

Client Satisfaction

Global Reach

USA • UK • EU • Middle East • Worldwide

Our Expertise

Web Development, Mobile App Development & Custom Software Solutions for Businesses in USA, UK, Europe, Middle East & Worldwide

Mobile App Development

Native iOS app development with Swift and Android app development with Kotlin, delivering high-performance, enterprise-grade mobile applications optimized for iPhone, iPad, and Android devices worldwide.

React NativeSwiftKotliniOSAndroid

Cross-Platform Apps

Build once, deploy everywhere. Cross-platform mobile app development using React Native and Flutter for iOS, Android, and progressive web apps from a single codebase with TypeScript and modern DevOps.

React NativeFlutterExpoFirebaseTypeScript

Full-Stack Web Development

End-to-end full-stack development with React, Next.js, and Node.js. MERN stack experts building scalable, responsive web applications and progressive web apps with enterprise-grade architecture, API development, and cloud deployment.

ReactNext.jsNode.jsExpressMongoDB

SaaS Platform Development

Complete SaaS platform development with multi-tenant architecture, subscription billing via Stripe, user authentication, cloud infrastructure on AWS/Google Cloud, and real-time features. Scalable solutions for global markets.

Next.jsStripeRedisPostgreSQLAWS

Real-Time Applications

Real-time web applications with Socket.IO and WebRTC for live messaging, collaborative tools, video conferencing, live notifications, and multiplayer features with backend development expertise in Node.js and Redis.

Socket.IONode.jsRedisReactWebRTC

E-Commerce & Marketplaces

Custom e-commerce solutions and online marketplaces with payment gateway integration (Stripe, PayPal), inventory management, shopping cart functionality, admin dashboards, and mobile-first responsive design.

Next.jsStripeMongoDBReactTailwind

API Development & Integration

RESTful API development and GraphQL API design with Node.js and Express. Microservices architecture, third-party API integration (Google OAuth, payment gateways), webhook implementation, and JWT authentication.

Node.jsExpressMongoDBRedisJWT

MVP & Rapid Prototyping

Fast-track your startup from idea to MVP development. Agile development methodology, sprint-based delivery, rapid prototyping for startups, and quick time-to-market with modern tech stack deployment on Vercel/AWS.

Next.jsMongoDBVercelStripeSocket.IO

Portfolio & Success Stories

Proven Web & Mobile App Development Results for Startups and Enterprises in USA, UK, Europe, Middle East & Worldwide

SkillstreamsConnect

Enterprise SaaS Marketplace Platform - B2B Web Application

SkillstreamsConnect

Enterprise SaaS Marketplace Platform - B2B Web Application

Comprehensive B2B SaaS marketplace connecting service providers with clients through an intelligent credit-based lead system. Full-stack web development features include real-time messaging with Socket.IO, secure Stripe payment integration, automated subscription billing, and advanced admin dashboard with analytics and reporting.

✓ Results & Impact

Serving 10,000+ users across USA, Canada, UK with 95% customer retention rate

Technology Stack:

Next.js 14MongoDBSocket.IOStripeRedis

Project 1 of 6

Our Technology Stack

Cutting-Edge Technologies for Web, Mobile & Cloud Solutions

Mobile App Development

📱React Native

🦋Flutter

🍎Swift (iOS)

🤖Kotlin (Android)

⚡Expo

Frontend Development

⚛️React.js

▲Next.js 14

💎TypeScript

🔄Redux

🎨Tailwind CSS

Backend Development

🟢Node.js

⚡Express.js

🔺Laravel

🔌Socket.IO

🌐REST APIs

Databases & Storage

🍃MongoDB

🐘PostgreSQL

🐬MySQL

🔴Redis

🔥Firebase

DevOps & Cloud

🐳Docker

☁️AWS

🌩️Google Cloud

▲Vercel

🔶Cloudflare

Integrations

💳Stripe

💰PayPal

🔐Google OAuth

📹WebRTC

📧Email Services

We stay ahead with the latest technologies and frameworks, from native iOS/Android development to cross-platform mobile apps and scalable web applications. Our tech stack is carefully chosen to ensure performance, security, and maintainability — deployed globally across multi-region cloud infrastructure in USA, Europe, Middle East, Asia, and worldwide.

Our Global Delivery Process

Transparent Process, Predictable Results — Delivered Worldwide

Discovery & Planning

Understanding Your Vision — Globally

•Detailed requirement gathering across time zones (USA, Canada, UK, EU, Australia)
•Technical consultation with international compliance expertise (GDPR, CCPA, SOC2)
•Scalable architecture design for global deployment and multi-region hosting
•Project scope definition with worldwide market considerations
•Timeline and budget planning optimized for international collaboration

Design & Prototyping

Bringing Ideas to Life — For Global Audiences

•UI/UX design optimized for international users and cultural preferences
•Interactive prototypes with mobile-first responsive design
•User flow mapping for multi-language and multi-currency support
•Design system creation following global accessibility standards (WCAG 2.1)
•Client feedback integration with real-time collaboration tools

Agile Development

Building Your Solution — With Worldwide Delivery

•Sprint-based development with flexible time zone coverage (24/5 availability)
•Weekly progress updates via video calls, Slack, and project management tools
•Continuous integration and automated testing for global deployment pipelines
•Code reviews following enterprise-grade standards and security best practices
•Regular client demos with screen sharing and interactive walkthroughs

Testing & QA

Ensuring Quality — For Global Markets

•Unit and integration testing with 90%+ code coverage standards
•Cross-browser and cross-device testing (Chrome, Safari, Firefox, Edge, iOS, Android)
•Performance optimization for international CDN delivery and edge caching
•Security audits and penetration testing for global compliance (OWASP Top 10)
•User acceptance testing with real users across multiple geographic regions

Deployment & Launch

Going Live — Worldwide

•Multi-region production deployment (AWS, Google Cloud, Azure, Vercel, Cloudflare)
•Global DNS setup with Cloudflare CDN and SSL/TLS certificates
•Real-time performance monitoring with uptime alerts and analytics
•Comprehensive documentation delivery with API references and runbooks
•Training and handoff sessions with ongoing knowledge transfer

Support & Maintenance

Ongoing Partnership — Around the Clock

•Post-launch support with SLA-backed response times for critical issues
•Bug fixes and updates deployed to production with zero-downtime strategies
•24/7 performance monitoring with automated alerts and incident response
•Feature enhancements and roadmap planning for continuous improvement
•Technical guidance and consulting for scaling to new markets worldwide

Global partnerships built on transparency and trust. We've successfully delivered projects to clients across USA, Canada, UK, Australia, and throughout Europe. Our process adapts to your specific needs, time zone, and market requirements while maintaining our commitment to enterprise-grade quality and on-time delivery — anywhere in the world.

Why Partner With Us

What Sets Us Apart — Trusted by Businesses Worldwide

✓

Enterprise-Grade Code

Clean, maintainable, and scalable code following industry best practices and international compliance standards (GDPR, CCPA, SOC2). Built to last and easy to extend for global markets.

✓

Modern Tech Stack

Leveraging the latest web and mobile technologies (React, Next.js, React Native, Flutter) for optimal performance across all platforms and devices worldwide.

✓

Global Communication

Seamless collaboration across time zones with clients in USA, Canada, UK, Australia, Europe, and the Middle East. Regular updates via Slack, video calls, and project management tools.

✓

On-Time Delivery Worldwide

Agile methodology with sprint-based delivery, flexible time zone coverage, and 24/5 availability ensures predictable timelines and consistent progress for international teams.

✓

Global Post-Launch Support

30-day bug-fix guarantee with SLA-backed response times, 24/7 monitoring, and continued partnership for maintenance, updates, and scaling to new markets worldwide.

✓

Proven Global Track Record

100+ successful projects delivered with 100% client satisfaction across USA, Canada, UK, Australia, Germany, France, Netherlands, Spain, UAE, Saudi Arabia, Qatar, and 20+ other countries worldwide.

30-Day

Bug-Fix Guarantee

100%

NDA & IP Protection

25+

Countries Served

24/5

Global Availability

What Our Clients Say

Real feedback from clients worldwide who trust our web & mobile app development expertise

"Vertex Stack delivered our SaaS platform ahead of schedule with exceptional code quality. Their technical expertise and clear communication made the entire process seamless."

Sarah Johnson

CEO, TechStartup Inc.

🇺🇸United States

100%

Client Satisfaction

100+

Successful Projects

4.9/5

Average Rating

Frequently Asked Questions

Everything you need to know about working with Vertex Stack

Still have questions?

We're here to help! Reach out and we'll get back to you within 24 hours.

Ready to Build Something Amazing?

Let's transform your vision into a scalable, production-ready solution.

Schedule a Free Consultation

30-Day Bug-Fix Guarantee

NDA & IP Protection

24-Hour Response Time

Transparent Pricing

VERTEX STACK

Who We Are

Our Expertise

Mobile App Development

Cross-Platform Apps

Full-Stack Web Development

SaaS Platform Development

Real-Time Applications

E-Commerce & Marketplaces

API Development & Integration

MVP & Rapid Prototyping

Portfolio & Success Stories

SkillstreamsConnect

Our Technology Stack

Mobile App Development

Frontend Development

Backend Development

Databases & Storage

DevOps & Cloud

Integrations

Our Global Delivery Process

Discovery & Planning

Design & Prototyping

Agile Development

Testing & QA

Deployment & Launch

Support & Maintenance

Why Partner With Us

Enterprise-Grade Code

Modern Tech Stack

Global Communication

On-Time Delivery Worldwide

Global Post-Launch Support

Proven Global Track Record

What Our Clients Say

Start Your Project Journey

Project Type & Timeline

Frequently Asked Questions

Still have questions?

Ready to Build Something Amazing?

Portfolio & Success Stories

SkillstreamsConnect

Our Technology Stack

Mobile App Development

Frontend Development

Backend Development

Databases & Storage

DevOps & Cloud

Integrations

Our Global Delivery Process

Discovery & Planning

Design & Prototyping

Agile Development

Testing & QA

Deployment & Launch

Support & Maintenance

Why Partner With Us

Enterprise-Grade Code

Modern Tech Stack

Global Communication

On-Time Delivery Worldwide

Global Post-Launch Support

Proven Global Track Record

What Our Clients Say

Start Your Project Journey

Project Type & Timeline

Frequently Asked Questions

Still have questions?

Ready to Build Something Amazing?