You will get Design a Scalable SaaS Architecture (No Rebuild Later)
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Project details
Most SaaS products don’t fail because of features — they fail because the architecture can’t handle real usage.
Scaling issues, broken billing, slow performance, and costly rewrites are the real risks.
This service helps you avoid those mistakes early.
You get a practical, implementation-ready SaaS architecture tailored to your product, users, and growth plans — not abstract diagrams.
I design systems that are stable, scalable, and aligned with your business model (B2B, B2C, or both).
What we cover:
1) Multi-tenancy and data isolation
2) Authentication, roles, and access control
3) Core data model and API structure
4) Stripe/subscription-ready architecture
5) Scaling and performance strategy
6) Infrastructure and deployment approach
Packages:
Identify SaaS Architecture Risks — identify risks and define MVP direction
Design Scalable SaaS Architecture — full system design and scaling strategy
Production-Ready SaaS System Design — infrastructure, CI/CD, security, and growth planning
⸻
Outcome:
A developer-ready architecture that reduces risk, speeds up development, and ensures your SaaS can scale with confidence.
Scaling issues, broken billing, slow performance, and costly rewrites are the real risks.
This service helps you avoid those mistakes early.
You get a practical, implementation-ready SaaS architecture tailored to your product, users, and growth plans — not abstract diagrams.
I design systems that are stable, scalable, and aligned with your business model (B2B, B2C, or both).
What we cover:
1) Multi-tenancy and data isolation
2) Authentication, roles, and access control
3) Core data model and API structure
4) Stripe/subscription-ready architecture
5) Scaling and performance strategy
6) Infrastructure and deployment approach
Packages:
Identify SaaS Architecture Risks — identify risks and define MVP direction
Design Scalable SaaS Architecture — full system design and scaling strategy
Production-Ready SaaS System Design — infrastructure, CI/CD, security, and growth planning
⸻
Outcome:
A developer-ready architecture that reduces risk, speeds up development, and ensures your SaaS can scale with confidence.
Programming Languages
PHP, Python, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$500
|
Standard
$2,000
|
Advanced
$3,500
|
|---|---|---|---|
| Delivery Time | 4 days | 10 days | 14 days |
Number of Revisions | 2 | 3 | 4 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Frequently asked questions
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SZ
Shu Z.
Jun 30, 2026
Fintech SaaS development
GS
Gaurav S.
Jul 4, 2025
Python API multi-tenant solution in aws
TP
Tim P.
Aug 9, 2024
SaaS Improvements: OpenAI ChatGPT integrations
Sergei and his team, BAUART are excellent to work with. I had a fairly complex project SAAS app (mindcrate.io) that had been botched by another dev who was sloppy and delivered poorly, security flawed code. I first reached out to Sergei to help me audit the code and determine why specific features weren't working. He gave me a full breakdown of what needed to be fixed and a executed a repair plan. Ultimately, I decided to overhaul the SAAS with a new UI and new features that Sergei, Konstantin and Anton diligently worked to deliver. It took longer than I would have liked, but I am very proud of the work and what they helped me bring to life.
Great team, smart guys and willing to go the extra mile. I highly recommend Sergei and BAUART for any of your hardcore SAAS, web app or AI projects. These guys are legit!
Great team, smart guys and willing to go the extra mile. I highly recommend Sergei and BAUART for any of your hardcore SAAS, web app or AI projects. These guys are legit!
TP
Tim P.
Feb 2, 2024
SaaS Improvement by AI: OpenAI ChatGPT Fixes and Integration
Sergei and his team are great to work with. I used them on a quick trial run to take over from another developer. They did a great job of fixing security issues, setting up the enviroment correctly and refactoring the code to get it up to professional level quality. Pushing forward with them on more sprints to help bring my product to an enterprise level. Highly recommended!!!!
RB
Rana B.
Nov 7, 2023
SaaS developing - frontend and backend on Laravel, Vue.js, Docker, Node.js, Python
Great team with extensive expertise and commitment to our product vision
About Sergei
AI SaaS Architect | Multi-Tenant Platforms & AI Agents in Production
100%
Job Success
Yerevan, Armenia - 4:40 pm local time
I'm Sergei — founder and CTO of a senior engineering team that designs and builds AI-powered SaaS platforms: multi-tenant architecture, AI agents, and the unglamorous production infrastructure that keeps them alive under real users.
Here's the uncomfortable truth about how founders usually find me: I'm the second team they hire. Recently a client brought us a "finished" AI SaaS platform before launch. Our architecture audit found 4 critical blockers and 11 high-risk issues the previous team had left behind — each one cheaper to fix on paper than in production. Cheap code isn't cheap. It's a mortgage you didn't know you signed.
WHAT I ACTUALLY DO
1) AI SaaS Product Engineering
Multi-tenant platforms with AI agents built in — not bolted on. My rule: LLMs go where they create value users pay for; deterministic, testable code goes everywhere else. That discipline is the difference between an AI demo and an AI product.
2) Architecture Audits & Production Rescues
A fixed-price, fixed-scope review of your codebase before launch or investment: architecture assessment, risk register, production-readiness score, and a prioritized roadmap. You own the report whether or not we continue together. This is the single highest-ROI engagement I offer — every hour of audit saves 10–20 hours of rework.
3) Long-Term Product Development (T&M)
For founders who want a technical team that thinks in years, not sprints. Time-and-materials with full transparency: you see who works on what, at which rate, every week. Fixed-price rewards vendors for cutting corners you won't see for months; T&M rewards us for exactly one thing — keeping you happy enough to continue. Our 7-year client relationship exists because of this model, not despite it.
HOW THE TEAM WORKS
You'll be working with me directly on architecture and key decisions — and with my senior engineers on delivery, at rates below mine, with full visibility into who does what. You get founder-level attention with team-level throughput. I personally review the architecture of everything we ship.
I build for non-technical founders deliberately. You're an expert in your domain — you shouldn't need to learn what a message queue is to make good decisions. Every technical choice comes to you as a business decision: what it costs, what it risks, what it unlocks.
STACK (the boring part)
Python, Node.js, React/Next.js, PostgreSQL, Redis, AWS, Docker, CI/CD. AI: Claude & OpenAI APIs, RAG pipelines, multi-agent orchestration, evaluation and guardrails for production LLM systems.
NEXT STEP
If you're building an AI SaaS product — or rescuing one — message me with a short description of where you are. If there's a fit, we'll start with a 15-minute call, and usually from there with an Architecture Audit: fixed price, fixed timeline, a report you keep either way.
Steps for completing your project
After purchasing the project, send requirements so Sergei can start the project.
Delivery time starts when Sergei receives requirements from you.
Sergei works on your project following the steps below.
Revisions may occur after the delivery date.
Kickoff & Risk Assessment
We review your idea/system, identify risks, and define clear goals.
Architecture Design
I design system structure, data flow, and core technical decisions.