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You will get Full Stack Developer - AI Agents & Automation / API Integration & Workflows

Vadym C.Status: Offline
Vadym C. Vadym C.
4.9
Top Rated
Preview imagePreview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Vadym, priced and ready to go.
Vadym C.Status: Offline
Vadym C. Vadym C.
4.9
Top Rated
Preview imagePreview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Vadym, priced and ready to go.

Project details

As a Full Stack Developer, react developer and web developer I build AI agents that connect to your tools - CRM, email, databases, payments, internal APIs. 50+ projects, 15+ hours/week saved through AI automation.

As a backend developer and saas developer: agent logic, n8n workflows, API integrations, webhooks, lead routing, data sync, reporting, event-driven automation. Use cases: support assistants, conversational AI agents, CRM automation, internal tools. Seamless integration, connecting systems end-to-end.

I work with my team. Ship fast, production-ready. Practical automations, not demos. From the ground up or existing codebase. No hand-holding needed.

Stack: React, Next.js, Node.js, NestJS, TypeScript, PostgreSQL, n8n, OpenAI.

Keywords: full stack developer AI agents, full stack developer automation, full stack developer n8n, full stack developer integrations, full stack developer workflow automation, full stack developer API integration, full stack developer webhooks, react developer AI agents, backend developer AI agents, backend developer n8n, saas developer AI agents, senior web developer, full stack developer React, full stack developer Node.js
Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security

What's included $8,500

These options are included with the project scope.

$8,500
  • Delivery Time 45 days
  • Number of Revisions 0
    • Source Code

Frequently asked questions

4.9
21 reviews
95% Complete
(20)
5% Complete
(1)
1% Complete
(0)
1% Complete
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AF

Aloysius F.
5.00
Jun 9, 2026
Friendly betting web app Vadym is an excellent developer and programmer. Will definitely use again!

MW

Mario W.
5.00
Mar 27, 2026
Senior Full Stack Developer | Node.js, React.js | SaaS MVP Development & Architecture Working with Vadym and the team was a positive experience. They supported our SaaS MVP across both architecture and development, communicated clearly, and stayed proactive throughout the project. The work was delivered reliably, and overall the collaboration was smooth and professional

MW

Mario W.
5.00
Mar 11, 2026
Integrations between KlickTipp and other tools Vadym and the team delivered high-quality work on time and were proactive throughout. Communication was clear and reliable. Great experience - we’re happy to continue working together.

MV

Matvey V.
5.00
Jul 29, 2025
React Developer

AV

Andrii V.
5.00
May 28, 2025
Development of user authorization system + flexible pricing system + refinements Everything is clear and to the point
Vadym C.Status: Offline

About Vadym

Vadym C.Status: Offline
Full Stack Developer | Node.js | React.js | Next.js | SaaS Developer
100% Job Success
4.9  (21 reviews)
Vyshneve, Ukraine - 11:42 pm local time
👋 Hi, I'm Vadym - a Full Stack Developer with 11 years of experience building SaaS platforms, marketplace platforms, web applications and internal tools end-to-end. As a node.js developer, react developer, next.js developer, nestjs developer and saas developer I take ownership and ship production-ready products with my team. 50+ projects, 100K+ users on a single platform.

🏆 WHAT YOU GET as a Full Stack Developer
✔️ Full Stack Developer React Node - 50+ builds across SaaS, marketplace platform, MVP, web application and AI/LLM-powered application. 100K+ users, proven track record.
✔️ As a node.js developer and next.js developer - 30+ apps shipped using full stack node.js react and nextjs nodejs stack. MVP in 4-6 weeks.
✔️ As a saas developer and nestjs developer - multi-tenant platforms, Stripe billing, RBAC, admin dashboards. Full stack developer saas and full stack ai saas developer builds.

🔥 ACHIEVEMENTS
✔️ 50+ projects as a full stack developer react node - SaaS, marketplace platform, MVP, admin dashboard, internal tool, fintech platform, CRM, ecommerce as a full stack web developer.
✔️ 100K+ users on AI SaaS platform, 80K+ on AI agents platform - as a react developer and full stack developer ai with react nextjs and react typescript.
✔️ 184M+ records. Scaled from 50 to 300 req/s, zero downtime - as a node.js developer, node.js backend developer and back end developer node.js.
✔️ Response time 1.2s → 180ms - as a nestjs developer and backend developer nest.js optimizing existing codebase.
✔️ 15+ hours/week saved via n8n automation - as a full stack developer crm and full stack developer llm.
✔️ 7x faster workflows. MVP in 4-6 weeks - as a next.js developer, nextjs developer and full stack developer marketplace.
✔️ 70% clients long-term. Response under 2 hours. Clear communication, work independently, async remote-first workflows.

🚀 WHERE I DELIVER

📌 As a saas developer and full stack developer saas I build multi-tenant architecture with RLS, RBAC, role-based access control, SSO. Stripe Connect, payment gateways, admin dashboards, operations portals. Full stack developer fintech and full stack developer healthcare - scalable platform for ongoing project and complex project. Build and maintain long-term.

📌 As a full stack developer marketplace and full stack developer ecommerce I build vendor management, inventory, commissions, Stripe payments. Lead management, CRM integrations, onboarding flows. Full stack developer crm, b2b saas booking system developer - existing platform or from scratch. Proven track record.

📌 As a react developer, next.js developer and front end developer - React, Next.js, TypeScript, Tailwind CSS, Firebase. 30+ SPAs and SSR apps. React supabase and next.js supabase for real-time, react pwa for performance, react ai capabilities. From figma to react to react developer firebase integrations. Front end developer next.js, nextjs frontend, web app developer react, full stack developer nextjs, full stack next.js.

📌 As a node.js developer, nestjs developer and backend developer nest.js - Node.js, NestJS, Express.js, PostgreSQL, MongoDB, Redis, Supabase, Firebase, AWS. REST APIs, webhooks, WebSockets. Full stack node.js react, react node, node microservices. Node.js next.js architecture, react next node supabase react native - full stack from API to mobile.

📌 As a react native developer, react native app developer and mobile app developer - React Native iOS and Android, MVP to production.

📌 As a full stack developer ai, full stack developer llm and full stack ai saas developer - OpenAI, LangChain, n8n, RAG. AI agents, summarisation, semantic search, react ai. If AI doesn't add ROI, I keep it simple.

📌 As a web developer, javascript developer, software developer and full stack app developer I work with existing codebase daily. Take ownership, work independently, build and maintain. Production-ready architecture, discussing architecture decisions, get up to speed quickly. Wordpress developer background for CMS integrations.

🔧 React, Next.js, JavaScript, TypeScript, Tailwind CSS, Firebase | Node.js, NestJS, Express.js, REST APIs, WebSockets | PostgreSQL, MySQL, MongoDB, Redis, Supabase, Stripe | React Native | n8n, OpenAI, LangChain | Docker, AWS, Vercel

📊 RESULTS
✅ 100K+ users on a single platform
✅ 184M+ records, 300 req/s, zero downtime
✅ Response time: 1.2s → 180ms
✅ 15+ hours/week saved through automation
✅ MVPs in 4-6 weeks, 7x faster workflows
✅ 70% long-term clients, response under 2 hours

🚀 Looking for a full stack developer, node.js developer or saas developer who takes real ownership?
📞 Share your context - I'll come back with structure and next steps.

📆 Last Updated: 6/9/26

Steps for completing your project

After purchasing the project, send requirements so Vadym can start the project.

Delivery time starts when Vadym receives requirements from you.

Vadym works on your project following the steps below.

Revisions may occur after the delivery date.

Goal + systems

Share the agent’s goal and the systems it must work with (CRM/email/Google Workspace/DB/payments/internal APIs). Mention any constraints (security, rate limits, approvals).

Quick plan

I confirm the approach: agent vs automation vs integrations, define triggers/actions, and list what’s included in v1.

Review the work, release payment, and leave feedback to Vadym.