Stripe Connect Marketplace Payments
Scalable marketplace payment foundation with connected accounts, commissions, and reliable transaction lifecycle handling.
- FinTech
- Payments
- Marketplace
FOUNDER · FULL-STACK ENGINEER · AI · FINTECH · AUTOMATION
I build software systems that connect products, payments, AI, and business operations.
I'm Yatinj Sutariya, Founder of Synfinity Dynamics and a full-stack engineer focused on AI-powered products, workflow automation, payment systems, SaaS platforms, and scalable application development.
I connect frontend applications, backend architecture, APIs, databases, AI models, payments, and cloud infrastructure into reliable software systems designed for real business operations.
Core
Technologies I Work With
- Next.js
- React
- JavaScript
- TypeScript
- Node.js
- Laravel
- PostgreSQL
- MongoDB
- Stripe
- AWS
- DigitalOcean
- OpenAI
- n8n
- Flutter
Built for real businesses. Proven in production.
I work with startups, founders, and businesses to build production-ready software systems - from SaaS platforms and payment infrastructure to AI-powered products, automation workflows, and internal tools.
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Years Experience
SELECTED WORK
Systems built around real business problems.
Each case study starts with the client situation, then walks through the challenge, technical approach, implementation, and outcome—not just a list of technologies.
AI-Powered Refund Operations Assistant
Reduced repetitive refund work with AI-assisted decisions, business rules, and human approval—without losing control.
- AI
- Automation
- E-commerce
- Payments
QuickBooks Invoice Reconciliation Assistant
Smoother finance workflow connecting QuickBooks, Stripe, and AI-assisted matching to cut repetitive reconciliation work.
- AI
- Finance
- Automation
- FinTech
Etsy Seller Intelligence Assistant
Converted marketplace data into actionable seller intelligence through AI analysis, processing, and dashboards.
- AI
- Marketplace
- Automation
- E-commerce
WHAT I BUILD
Products and systems built across the full stack.
AI & Automation
AI agents, intelligent product features, n8n, Make, Zapier, APIs, structured workflows, retrieval systems, and custom automation backends.
Payments & FinTech
Stripe Connect, subscriptions, ACH, marketplace payments, commission flows, webhooks, payment lifecycle management, and revenue automation.
Full-Stack Products
Next.js, React, Node.js, TypeScript, databases, SaaS products, dashboards, APIs, authentication, mobile applications, and backend systems.
Product Engineering
Startup MVPs, existing-system takeovers, architecture, integrations, deployment, cloud infrastructure, production debugging, and product extension.
AI & AUTOMATION
AI where it creates leverage. Automation where it removes repetition.
I use AI and automation as parts of complete software systems rather than isolated tools - assistants in existing products, agents with external APIs, retrieval around business knowledge, and workflows that move through SaaS tools, custom backends, databases, approvals, and notifications.
- LLM integration & tool calling
- AI agents with human approval
- RAG & knowledge systems
- n8n / Make / Zapier + custom APIs
AI workflow
- Prompt
- LLM
- Tools
- Business Logic
- Automation
Payment lifecycle
- Customer
- Payment Intent
- Stripe
- Webhook
- Platform
Transaction settled
PAYMENTS & FINTECH
Payment systems built beyond the checkout button.
Reliable financial workflows require careful handling of users, connected accounts, transactions, subscriptions, payment methods, webhooks, failures, refunds, reconciliation, and platform-specific business rules.
- Stripe Connect & commissions
- Subscriptions & ACH
- Webhook lifecycle
- Marketplace payouts
System map
How the pieces connect
Hover a node to see related project work across AI, payments, automation, and infrastructure.
Hover a node to explore.
PROCESS
From business problem to production system.
01
Understand
Start with the business problem, users, workflow, and constraints rather than immediately choosing a framework or platform.
02
Map Workflow
Identify data, systems, dependencies, integrations, permissions, failure points, and edge cases.
03
Architect
Define frontend, backend, database, API, payment, AI, automation, and cloud responsibilities.
04
Build
Implement the product using the right mix of custom engineering and external platforms.
05
Integrate
Connect APIs, payments, AI, automation, and third-party services into one reliable system.
06
Validate
Test normal flows, permissions, retries, failures, edge cases, and production scenarios.
07
Deploy
Prepare the system for real users with monitoring, environment setup, and operational readiness.
08
Improve
Remove bottlenecks, extend capabilities, and evolve the architecture as requirements change.
ABOUT
Yatinj Sutariya
I build software systems that connect products, payments, AI, and business operations - from early MVPs to production platforms.
Founder & Full-Stack Engineer
- Experience
- 8+ years
- Focus
- AI · Stripe · Automation · SaaS
- Founder
- Synfinity Dynamics
CLIENT TRUST
Why clients continue working with me.
Systems Thinking
I look at how the entire product and workflow fits together rather than solving one isolated task.
Technical Range
I can work across frontend, backend, APIs, payments, AI, automation, databases, and cloud infrastructure.
Communication
Complex technical decisions are explained clearly so clients understand what is being built and why.
Ownership
I investigate issues beyond the immediate task when they can affect the reliability of the final system.
What clients say about the work.
Reliability
“Amazing work as always. 100% reliable.”
Ready to build something great?
Have a system to build? Let's discuss it.
Whether you're building a new SaaS product, integrating AI, upgrading Stripe, automating business operations, or extending an existing application, let's discuss the system you need.