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You will get Full Stack Developer | React Developer | AI Developer

Roy V.Status: Offline
Roy V. Roy V.
4.8
Top Rated
Preview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Roy, priced and ready to go.
Roy V.Status: Offline
Roy V. Roy V.
4.8
Top Rated
Preview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Roy, priced and ready to go.

Project details

I’m a Top-Rated Plus and Expert Vetted (top 1%) Full Stack Developer | SaaS Developer | Backend Developer specializing in React, Node.js, and modern JavaScript stacks, alongside PHP, Python, and Golang, building secure, scalable, and production-ready web applications. I work with both startups and established companies to deliver MVPs and enterprise-grade platforms built for real users, real traffic, and long-term growth.

Before purchasing, feel free to send me a message. Let's discuss your idea first, and I’ll suggest the most suitable approach

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Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, PSD to HTML, Design
What's included
Service Tiers Starter
$65
Standard
$325
Advanced
$650
Delivery Time 1 day 1 day 2 days
Number of Revisions
246
Number of Pages
124
Design Customization
Content Upload
Responsive Design
Source Code
4.8
162 reviews
91% Complete
(147)
7% Complete
(12)
1% Complete
(0)
1% Complete
(1)
1% Complete
(2)

JG

Joe G.
5.00
Sep 16, 2026
AI Engineer needed for Full Stack Developer project with Mobile App for IOS and Android Great experience working with Interactivated on Trimly's Milestone 1. Roy and the team were super responsive and very easy to communicate with throughout, and the core architecture and setup came together very smoothly. Clear updates, no surprises, and a solid technical foundation to build the rest of the app on. Looking forward to the next milestones as we head toward launch.

PD

Patrick D.
5.00
Sep 11, 2026
SaaS Developer / AI Automation Engineer for Backend Workflow / State Engine Development. Roy and his team have been highly professional and reliable throughout the development process. They brought an established product concept to life with strong attention to detail, thoughtful problem-solving, and consistent communication. The team has been responsive to feedback, dependable throughout a complex and iterative build, and genuinely committed to the quality of the finished product. I greatly appreciate their technical ability, professionalism, and dedication.

HH

Harry H.
2.00
Sep 9, 2026
Full-Stack Developer for SaaS Membership Platform with E-commerce portal in Next.js

SD

Stevie D.
5.00
Jul 2, 2026
30 minute consultation Roy and his team put together one of the most in-depth reports I've ever seen. It was very helpful and insightful about where I stand.

JM

Jeff M.
5.00
Jun 4, 2026
Full stack developer / SaaS developer for code review on GRC System enterprise readiness Thank you for your help reviewing our codebase! The insights were helpful and moved our project along as needed. Will reach out again.
Roy V.Status: Offline

About Roy

Roy V.Status: Offline
Full Stack Developer | SaaS Developer | Backend Developer | Node
97% Job Success
4.8  (162 reviews)
Groningen, Netherlands - 4:15 pm local time
You probably don’t need more code as much as you need someone who understands the product, makes sensible technical decisions, and takes ownership of the work.

• Expert-Vetted – Top 1% pre-screened by Upwork Talent Managers and experts in their field
• Top Rated Plus – proven success on large, long-term contracts
• $2M+ earned and 100% Job Success on Upwork
• 247 completed jobs and 28,000+ hours worked
• 5 stars from 180 verified, real client reviews
• Products I’ve helped build have generated $100M+ in client revenue
• 15+ years of software development experience
• 200+ client reviews across Upwork and independent platforms

I’m a Full Stack Developer, SaaS Developer and Backend Developer focused on production-ready software. I combine product thinking, clean architecture and hands-on delivery across the stack.

As a Full Stack Developer, I own systems end to end. My frontend work is usually React-based, while the backend is built around clear APIs, reliable data models and maintainable business logic. This gives clients one Full Stack Developer who can connect the whole product instead of splitting responsibility across a React developer, web developer, mobile app developer and Backend Developer.

As a SaaS Developer, I build MVPs, customer platforms, internal tools and API-driven products designed for long-term use. As a Backend Developer, I focus on performance, security, permissions, data integrity, asynchronous processing and operational stability. I also make sure every SaaS product has a sensible path from first release to scale.

My core JavaScript work includes node.js backend developer and backend developer nest.js projects, together with full stack developer react delivery. I also work as a full stack developer saas, full stack ai saas developer and full stack developer javascript saas ia specialist when a product combines JavaScript, SaaS and AI.

For Python products, I work as a python full stack developer and python backend developer, including python full stack developer flask, python full stack developer django and django backend developer projects. Depending on the existing stack, I can also contribute as a php backend developer, laravel backend developer, full stack developer laravel, java backend developer, .net full stack developer or backend developer rust.

I’ve also handled more specific backend needs, including backend app developer work, java springboot stripe backend developer implementations and API integrations involving payments, messaging and authentication. As a Full Stack Developer and Backend Developer, I’m comfortable joining an existing system, fixing its foundations or taking a new build from architecture through release.

My SaaS Developer work spans products that need a full stack developer fintech, full stack developer crm, full stack developer ecommerce, full stack developer healthcare or full stack developer marketplace. I’ve also built multi-role and booking workflows relevant to a b2b saas booking system developer, plus integrations suited to a full stack developer twilio or full stack developer supabase.

For commerce and content platforms, I can support full stack developer shopify and shopify backend developer work, including projects looking for a shopify developer with expertise in ai chatbot and saas marketing. I have previous experience as a wordpress backend developer and can handle full stack developer webflow, webflow developer saas or software developer needs, although my main focus is custom SaaS and API-driven software.

AI is part of the product when it adds real value. I work as a full stack developer ai, ai backend developer and full stack developer llm on LLM features, agents, data pipelines and automated workflows. I design these features to be observable, reliable and cost-controlled.

That combination matters. A Full Stack Developer sees the whole system, a SaaS Developer understands product growth, and a Backend Developer protects the foundations. You get a Full Stack Developer, SaaS Developer and Backend Developer working from one product view, not three disconnected roles. When needed, I can remain your SaaS Developer while specialists from my team support delivery, and I stay accountable as the Backend Developer throughout.

Clients typically bring me in when they need:

• a Full Stack Developer who can own frontend and backend
• a SaaS Developer who understands product growth and scaling constraints
• a Backend Developer experienced with real production systems
• a full stack web developer for complex workflows and modern interfaces
• a full stack developer crm or full stack developer marketplace for multi-role business logic
• a Full Stack Developer who can work directly or involve the right specialists from my team

I work hands-on as a Full Stack Developer, SaaS Developer and Backend Developer, staying close to the product and the people using it. The goal is straightforward: software your team can confidently run, maintain and scale.

Steps for completing your project

After purchasing the project, send requirements so Roy can start the project.

Delivery time starts when Roy receives requirements from you.

Roy works on your project following the steps below.

Revisions may occur after the delivery date.

Discovery

Having a discovery call to go over the requirements in detail

Access to the platform

We set up a new platform or get access credentials to work on the existing systems

Review the work, release payment, and leave feedback to Roy.