You will get Full Stack Developer react | fast and scalable custom website for startup
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Project details
Building an MVP or SaaS product can feel overwhelming — you need to move fast, avoid costly mistakes, and ship something that actually works.
As a Full Stack Developer React specialist, I help startups turn ideas into real, scalable products. From early validation to production-ready MVPs, I work as a Full Stack Developer across the entire stack — React Node on the frontend and backend, clean architecture, and code that's ready for growth from day one.
What you get:
MVP and SaaS platform development
React Node web apps and dashboards
Landing pages and marketing websites
API integrations and custom business logic
Scalable, production-ready code
Why work with me:
I don't just code — I think like a product partner. As a Full Stack Developer, I help you avoid overengineering, cut time to market, and focus only on what matters for launch. You get clarity, speed, and results.
My process:
Discovery and requirements clarification
Product planning and architecture
Full stack development — React Node, frontend and backend
Iterative delivery with feedback loops
Final delivery and post-launch support
Let's build something that scales.
As a Full Stack Developer React specialist, I help startups turn ideas into real, scalable products. From early validation to production-ready MVPs, I work as a Full Stack Developer across the entire stack — React Node on the frontend and backend, clean architecture, and code that's ready for growth from day one.
What you get:
MVP and SaaS platform development
React Node web apps and dashboards
Landing pages and marketing websites
API integrations and custom business logic
Scalable, production-ready code
Why work with me:
I don't just code — I think like a product partner. As a Full Stack Developer, I help you avoid overengineering, cut time to market, and focus only on what matters for launch. You get clarity, speed, and results.
My process:
Discovery and requirements clarification
Product planning and architecture
Full stack development — React Node, frontend and backend
Iterative delivery with feedback loops
Final delivery and post-launch support
Let's build something that scales.
Programming Languages
HTML & CSS, JavaScript, TypeScriptWhat's included
| Service Tiers |
Starter
$130
|
Standard
$1,575
|
Advanced
$5,253
|
|---|---|---|---|
| Delivery Time | 3 days | 14 days | 30 days |
Number of Revisions | 1 | 3 | 7 |
Number of Pages | 1 | 3 | 5 |
Design Customization | |||
Content Upload | |||
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$74 - $1,050Frequently asked questions
38 reviews
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SE
Stuart E.
Aug 18, 2026
Permissions Migration Full Stack
DM
Don M.
Aug 11, 2026
Directory Site Development for Meat and Seafood Markets
It was a pleasure working with the SDA team throughout our six-month project. From start to finish, they were professional, accountable, reliable, and consistently delivered quality work.
Communication was excellent throughout the entire development process. The team was always available for our weekly virtual check-in meetings, kept me informed on progress, and was responsive whenever questions or changes came up.
Olga did an excellent job as project manager, keeping everything organized and moving forward and the entire development team were great to work with.
Building a project from the ground up requires a team you can trust, and SDA proved to be a reliable partner throughout the process. If I have another development project in the future, I would be very comfortable working with them again.
Thank you, Oleksandr, Olga, and the entire SDA team!
Communication was excellent throughout the entire development process. The team was always available for our weekly virtual check-in meetings, kept me informed on progress, and was responsive whenever questions or changes came up.
Olga did an excellent job as project manager, keeping everything organized and moving forward and the entire development team were great to work with.
Building a project from the ground up requires a team you can trust, and SDA proved to be a reliable partner throughout the process. If I have another development project in the future, I would be very comfortable working with them again.
Thank you, Oleksandr, Olga, and the entire SDA team!
AA
Antal A.
Aug 10, 2026
Development of the PingPoint Web and Mobile Applications
SDA has been an excellent team to work with throughout the development of the PingPoint application. They have been professional, flexible, and highly responsive, always taking the time to listen carefully to our feedback and customer queries.
Their communication has been clear and constructive, and they have shown a genuine commitment to understanding our goals and finding practical solutions. The team has been collaborative, patient with changes, proactive in their approach, and dedicated to delivering quality work.
Overall, SDA has been a valuable and trusted development partner, and I truly appreciate their hard work, technical contribution, and positive attitude throughout the project.
Their communication has been clear and constructive, and they have shown a genuine commitment to understanding our goals and finding practical solutions. The team has been collaborative, patient with changes, proactive in their approach, and dedicated to delivering quality work.
Overall, SDA has been a valuable and trusted development partner, and I truly appreciate their hard work, technical contribution, and positive attitude throughout the project.
JT
Josef T.
Jun 27, 2026
Front- and Backend Developer for Master-Product-Data-SaaS in Precious Metals
Thank you, very friendly team.
MZ
Martin Z.
May 14, 2026
Senior Full-Stack Developer Needed for Code Review and QA
We were grateful for Oleksandr and his team's feedback on our project and hope to work again with them in the future.
About Oleksandr
Senior AI Full-Stack Engineer | AI SaaS, AI Agents, RAG, Next.js
100%
Job Success
Tallinn, Estonia - 6:06 am local time
I build AI-powered SaaS products that are ready for real users, real data and real growth. From MVP architecture and full-stack development to AI Agents, RAG and production deployment, I can own the technical side of a product end-to-end.
My core stack is Next.js, React, TypeScript, Node.js, Python, FastAPI, Supabase and PostgreSQL, with OpenAI and Claude for production AI features. I also build React Native mobile applications when mobile is part of the product ecosystem.
PROBLEMS I SOLVE
Most clients come to me with one of these:
❌ An AI or SaaS MVP that works in a demo but isn't ready for production.
❌ A product that needs AI Agents, RAG or LLM features integrated into existing workflows.
❌ An existing SaaS platform that's becoming slow, difficult to maintain or expensive to extend.
❌ No clear technical architecture for moving from MVP to a scalable product.
❌ A FinTech or data-heavy product where security, integrations and reliable infrastructure matter.
❌ A web product that also needs a React Native mobile experience without maintaining completely separate systems.
I approach these as product engineering problems, not isolated development tasks. Architecture, data models, APIs, AI infrastructure and deployment decisions are made with the next stage of the product in mind.
150+ shipped projects. 20+ countries. Zero rebuilds requested.
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WHAT YOU GET
🔷 AI-Powered SaaS Product Engineering
I build SaaS MVPs and production platforms using Next.js, React, TypeScript, Node.js, Python, FastAPI, Supabase and PostgreSQL. This includes product architecture, authentication, subscriptions, payments, dashboards, APIs, third-party integrations and infrastructure.
🔷 AI Agents, RAG & LLM Integration
I build AI Agents, agentic workflows, Retrieval Augmented Generation (RAG), semantic search, function calling and LLM-powered product features using OpenAI API, Claude API, LangChain and LangGraph.
The goal is to make AI part of the actual product workflow, not a separate chatbot or proof of concept.
🔷 FinTech & Data-Heavy Products
I work with FinTech SaaS, financial dashboards, analytics platforms and products with complex data flows. This includes payment integrations, subscription systems, role-based access, data processing and backend architecture designed around reliability and maintainability.
🔷 Full-Stack Development
I work across frontend and backend development with Next.js, React, Node.js, TypeScript, Python and FastAPI. I can take ownership of the complete application or step into an existing codebase to improve architecture, performance and maintainability.
🔷 React Native Mobile Development
When SaaS products need a mobile layer, I build React Native applications connected to the same APIs, authentication, data and AI infrastructure as the web platform.
🔷 Integrations, Automation & Infrastructure
OpenAI, Claude, MCP, n8n, Stripe, third-party APIs, AWS, GCP, Docker and CI/CD. I build the infrastructure around the product so AI, web, mobile and external systems work together reliably.
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MY APPROACH
Discovery first: I understand the product, users and technical constraints before choosing the architecture.
Architecture before code: stack, data, APIs, AI components and infrastructure have a clear plan.
Production over prototypes: I build for real users and real workflows, not just a successful demo.
Iterative delivery: working product increments and visible progress throughout development.
Built to scale and hand off: clean architecture and maintainable code that another engineer can continue working with.
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SDA COMPANY
Behind this profile is SDA Company, the software development team I founded. Over 5+ years we've worked across SaaS, AI, FinTech, healthcare, mobile and data-intensive products.
As CEO and lead engineer, I stay directly involved in architecture and technical decisions while having a team behind me when a product needs additional engineering, design or delivery capacity.
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💡 Building an AI-powered SaaS product, adding AI Agents or RAG to an existing platform or moving an MVP toward production? Send me the details and I'll take a look.
Technology Stack: Next.js, React, React Native, TypeScript, Node.js, Python, FastAPI, Django, Supabase, PostgreSQL, Firebase, MongoDB, OpenAI API, Claude API, AI Agents, RAG, LangChain, LangGraph, MCP, n8n, Stripe, AWS, GCP, Docker, CI/CD
Steps for completing your project
After purchasing the project, send requirements so Oleksandr can start the project.
Delivery time starts when Oleksandr receives requirements from you.
Oleksandr works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Brief
We review your requirements, references, and brand materials. I'll ask clarifying questions about goals, audience, and features to make sure we're aligned before any work starts.
Scope & Tech Plan
I define the sitemap, user flows, tech stack, and architecture. You receive a clear document outlining what will be built, how, and on which timeline.