You will get a scalable Full Stack AI SaaS with Auth, Database, API, and Logic
Top Rated
Project details
Building an AI Wrapper is easy. Building a scalable SaaS business is hard.
You have a great idea/prototype for an AI product, but turning that into a real application requires more than just calling the OpenAI API. You need authentication, a database, payment processing, and a secure backend.
I will build your SaaS using a scalable stack:
• Frontend: Next.js (React) & Tailwind CSS for a responsive UI.
• Backend: Python (FastAPI/Django) or Node.js.
• AI Integration: OpenAI (GPT-4), Anthropic, or LangChain logic.
• Database: PostgreSQL / Supabase / MongoDB.
• The "Hard Stuff": User Auth & Payments (Stripe).
Why choose this gig?
• Production Quality: No "spaghetti code." Modular and easy to maintain.
• Deployment Ready: I deploy your app to AWS or Vercel (Advanced Tier).
• Security First: API keys are hidden, and user data is protected.
• Perfect for: Founders needing an MVP, internal AI Tools, or subscription SaaS launches.
This is perfect for:
• Founders who need an MVP to show investors.
• Businesses automating internal tools with Custom AI Agents.
• Entrepreneurs launching a subscription-based SaaS.
Let’s launch your SaaS today.
You have a great idea/prototype for an AI product, but turning that into a real application requires more than just calling the OpenAI API. You need authentication, a database, payment processing, and a secure backend.
I will build your SaaS using a scalable stack:
• Frontend: Next.js (React) & Tailwind CSS for a responsive UI.
• Backend: Python (FastAPI/Django) or Node.js.
• AI Integration: OpenAI (GPT-4), Anthropic, or LangChain logic.
• Database: PostgreSQL / Supabase / MongoDB.
• The "Hard Stuff": User Auth & Payments (Stripe).
Why choose this gig?
• Production Quality: No "spaghetti code." Modular and easy to maintain.
• Deployment Ready: I deploy your app to AWS or Vercel (Advanced Tier).
• Security First: API keys are hidden, and user data is protected.
• Perfect for: Founders needing an MVP, internal AI Tools, or subscription SaaS launches.
This is perfect for:
• Founders who need an MVP to show investors.
• Businesses automating internal tools with Custom AI Agents.
• Entrepreneurs launching a subscription-based SaaS.
Let’s launch your SaaS today.
Machine Learning Tools
Amazon SageMaker, Azure Machine Learning, BigDL, ChatGPT, Databricks MLflow, deeplearn.js, GoLearn, Google AutoML, Google Sheets, Kubeflow, Microsoft Excel, Microsoft Power BI, NumPy, NVIDIA AI Platform, OpenCV, pandas, Python, Python Scikit-Learn, PyTorch, scikit-learn, SciPy, Scrapy, SQL, Tesseract OCR, Vertex AIWhat's included
| Service Tiers |
Starter
$50
|
Standard
$250
|
Advanced
$1,000
|
|---|---|---|---|
| Delivery Time | 2 days | 6 days | 15 days |
Number of Revisions | 0 | 0 | 0 |
Model Validation/Testing | - | ||
Model Documentation | |||
Data Source Connectivity | |||
Source Code |
Frequently asked questions
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KT
Kamel T.
May 14, 2026
React/Capacitor Developer – SaaS Setup (Time-Based Freemium & Stripe)
Great to work with and Hardworking.
IS
Ian S.
Apr 28, 2026
POC web frontend with database
Good fast communication, friendly, helpful, work completed as scoped
AM
Alex M.
Apr 15, 2026
Create PoC LiveKit Video Agent
Eryk really helped get us off the ground quickly with the project. He was a rapid and clear communicator. He worked both quickly and to a high standard. I'd be very happy to work with him again.
SW
Scott W.
Dec 23, 2025
Next.js 16 + Supabase + Stripe Expert to Finalize & Deploy Production Site (App Router)
AR
Andre R.
Dec 16, 2025
Shopify Custom Code
Eryk is really nice and helpful. With his creativity and fast thinking ability Eryk helped a lot setting up Landingpage sections that he was working on and made sure they were fluently responsive.
Thankful for your support Eryk. Best
Thankful for your support Eryk. Best
About Eryk
Next.js Developer | SaaS & AI Applications | TypeScript + Python + AWS
96%
Job Success
Islamabad, Pakistan - 11:54 am local time
I specialize in end-to-end AI and full-stack development, covering architecture, implementation, and deployment. I work with founders, SaaS teams, and product leaders to build AI-powered and full-stack applications designed to handle growth in users, data volume, and evolving requirements.
My work includes AI chatbots, internal AI agents, data-driven dashboards, and full-scale web applications built with Laravel/PHP, Next.js React, SvelteKit, Vue, TypeScript, Node, FastAPI, Django, and AWS/GCP/Azure.
✅ Testimonial
👉 “After working with developers for the past 20 years, I can confidently say that Eryk is among the most talented developers I have ever worked with.” ⭐️⭐️⭐️⭐️⭐️
👉 “Eryk is a highly capable engineer who delivers results quickly. We were searching for a full-time programmer for our start-up, and he stood out through his technical depth and speed of execution. We can confidently recommend him.” ⭐️⭐️⭐️⭐️⭐️
My approach to engineering is rooted in the critical thinking and risk management that define this discipline. I typically opt for FastAPI when low-latency AI endpoints are paramount, Django when admin-heavy workflows and integrity are crucial, and Next.js when SEO or app-like user experiences are necessary. The stack is focused on addressing specific problems rather than following trends.
I work primarily in TypeScript, building clean, maintainable applications with Next.js, React, SvelteKit, and Vue, based on product needs and team structure.
On the backend, I design REST and GraphQL APIs and backend services using Laravel, FastAPI, Django, and Node.js, and leverage platforms like Supabase and Firebase when speed, reliability, and simplicity are priorities. I’ve implemented authentication, real-time features, storage, and background workflows across both platforms in live production environments.
From an infrastructure and deployment standpoint, my work includes AWS, GCP, Docker, CI/CD pipelines, serverless deployments, cloud backends, and production DevOps workflows, supporting scalable and cost-aware systems.
Much of my recent work centers on designing and shipping production AI systems, including AI interviewers, AI video generators, ChatGPT-style applications, RAG-based knowledge systems, and internal AI tools for reporting and automation. In these projects, success depends less on model choice and more on how the surrounding system is designed. I account for context handling, cost control, observability, and system boundaries early so the product remains stable as it evolves.
I’m a senior full-stack engineer with 8+ years of experience, and I usually take full ownership of systems from architecture, backend logic, AI integration, frontend, and deployment. This leads to clearer decisions, smoother execution, and far fewer surprises after launch.
Clients usually reach out to me when:
👉 An MVP needs to mature into a long-term product
👉 An AI feature must move from prototype to real usage
👉 A system is slowing down, becoming fragile, or growing costly
👉 They want one engineer who can own the full technical picture
I’m direct, proactive, and transparent. I flag risks early, explain trade-offs clearly, and help teams make decisions they won’t regret six months later.
If you’re looking for a developer who can think like an owner, build like an engineer, and communicate like a partner, we’ll work well together.
Looking forward to speaking,
Eryk S.
Steps for completing your project
After purchasing the project, send requirements so Eryk can start the project.
Delivery time starts when Eryk receives requirements from you.
Eryk works on your project following the steps below.
Revisions may occur after the delivery date.
Backend & AI Logic:
I build the API and connect your AI models (OpenAI/LLMs).