You will get a fully functioning SaaS MVP with backend, API & payments
Project details
If you’re building a SaaS or startup and need a real MVP with proper backend architecture, I can help.
I specialize in building production-ready MVPs that include backend logic, database design, authentication, API integrations, and optional Stripe or Paystack payments. My focus is structure, scalability, and clean deployment — not just getting something online.
Many founders build a frontend first using templates or AI tools, then realize they need solid backend systems to support users, payments, and data. That’s where I come in.
You’ll get:
• Clear technical scope before development begins
• Secure backend + database setup
• Clean API integrations
• Cloud deployment configuration
• Structured build process with milestones
I work best with founders who:
• Can clearly define their 3–5 core launch features
• Understand MVP means focused version one
• Want a stable foundation for growth
If you’re ready to launch properly — let’s build it right.
I specialize in building production-ready MVPs that include backend logic, database design, authentication, API integrations, and optional Stripe or Paystack payments. My focus is structure, scalability, and clean deployment — not just getting something online.
Many founders build a frontend first using templates or AI tools, then realize they need solid backend systems to support users, payments, and data. That’s where I come in.
You’ll get:
• Clear technical scope before development begins
• Secure backend + database setup
• Clean API integrations
• Cloud deployment configuration
• Structured build process with milestones
I work best with founders who:
• Can clearly define their 3–5 core launch features
• Understand MVP means focused version one
• Want a stable foundation for growth
If you’re ready to launch properly — let’s build it right.
Programming Languages
HTML & CSS, JavaScript, PythonWhat's included
| Service Tiers |
Starter
$300
|
Standard
$800
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 10 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 3 | 5 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Frequently asked questions
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ST
Sean T.
Feb 7, 2025
Wix Expert Needed For Rush Job Today Fixing a Wix site
DN
Dustin N.
Feb 6, 2025
Need a 3DS credit/ debit Card payment gateway created and implemented on my website. FORCED 3DS!!!
TA
Tyler A.
Dec 7, 2024
Debug Windows Python app built with Cursor
I enjoyed working with Xavier on my project. They were professional, communicative, and delivered great results. I highly recommend them! I've met lots of global freelancers over 15 years and it has been a pleasure working with Xavier. Take the opportunity, if you can!
SS
Sammy S.
Nov 30, 2024
Create event registration form for website
Although we ended up not competing this particular project by mutual agreement, I'm giving him a 5-star rating for a great attitude and being easy to work with.
About Xavier
AI Workflow Automation Engineer | Agents, Integrations & SaaS Systems
38%
Job Success
Durham, United States - 3:38 pm local time
I build AI-powered systems that take repetitive business workflows and turn them into reliable, automated processes.
Not just chatbots.
I’m talking about systems that can capture information, research it, make decisions, update your database or CRM, trigger the next action, involve a human when needed, and keep the entire workflow moving.
For example:
New lead → research → qualification → CRM update → personalized outreach → follow-up → human review
Or:
Customer request → classify → retrieve account context → take action → escalate exceptions → log the result
If your team is manually moving information between tools, copying data into AI, chasing follow-ups, or performing the same decision-making process over and over, that is usually where I can help.
What I Build
• AI agents and multi-step agentic workflows• Business process automation• AI-powered lead qualification and research systems• Internal AI tools and operational dashboards• OpenAI / LLM API integrations• MCP servers and AI tool integrations• CRM, webhook and third-party API automation• Human-in-the-loop approval workflows• AI-powered SaaS features• Backend infrastructure supporting AI applications
I also build the engineering underneath these systems:
• APIs and backend services• Authentication and permissions• Database architecture• Stripe / Paystack payments• Webhooks and event-driven workflows• Cloud deployment and production infrastructure
Where I’m Most Useful
I work best when you already know something in your business is inefficient, but you're not sure how AI should fit into it.
You might have:
• Leads falling through the cracks• A process your team repeats manually every day• Several tools that don't communicate with each other• An AI prototype that works in a demo but breaks in production• A SaaS product that needs AI integrated into an existing workflow• A workflow that still requires someone to copy, paste, research, categorize, or follow up manually
I can map the process, identify where automation actually makes sense, and build the system connecting everything together.
Why My Approach Is Different
I don't start with:
“Where can we add AI?”
I start with:
“Where is the business losing time, money, or momentum?”
Then we build the smallest useful system that removes that friction.
That might involve an AI agent.
It might involve deterministic automation.
Usually, the best production system uses both.
I care about reliability, observability, permissions, retries, human intervention, and what happens when the AI gets something wrong — not just getting an impressive demo working once.
Technologies
OpenAI APIs • AI Agents • MCP • JavaScript / TypeScript • Node.js • Svelte / React • REST APIs • Webhooks • PostgreSQL / MySQL • Prisma • Redis • Supabase • Convex • Stripe • Paystack • Railway • Vercel • AWS • Docker
Working With Me
You’ll get:
• A clearly defined workflow before development begins• Technical recommendations tied to business outcomes• Milestone-based implementation• Clear communication throughout the project• Production-ready source code• Documentation for the system you’re actually running
If you have a workflow you suspect AI could improve, send me:
What happens today
Who currently performs the work
Which tools are involved
What is slow, repetitive, expensive, or breaking
I’ll help you determine what should be automated, where AI belongs, and what the system should look like.
— Xavier
Steps for completing your project
After purchasing the project, send requirements so Xavier can start the project.
Delivery time starts when Xavier receives requirements from you.
Xavier works on your project following the steps below.
Revisions may occur after the delivery date.
Scope & Architecture Planning
Confirm requirements, define core features, design database structure, and finalize technical approach.
Backend & Core Feature Development
Build backend logic, authentication, APIs, and core MVP functionality.