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You will get React Developer| ReactJs| React.js Node | SaaS webapp| full-stack developer

Rovshen G.Status: Offline
Rovshen G. Rovshen G.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Rovshen, priced and ready to go.
Rovshen G.Status: Offline
Rovshen G. Rovshen G.
5.0
Top Rated
Preview image

Let a pro handle the details

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

Project details

Looking for a senior React full-stack developer to build your modern SaaS web application, dashboard, or custom CRM? I help businesses design, develop, and launch scalable apps with pixel-perfect UI, secure backends, and smooth user experience.

✔ Front-end: React, Next.js, TailwindCSS, Material-UI, responsive dashboards, pixel-perfect UI from Figma/Adobe XD
✔ Database: MongoDB, PostgreSQL, MySQL
✔ Desktop Apps: Electron (cross-platform Windows/Mac/Linux)
✔ Payments & SaaS: Stripe, PayPal, subscription logic, multi-tenant SaaS dashboards

Whether you need a React dashboard, SaaS platform, CRM, POS system, or custom full-stack web application, I can deliver a high-performance, production-ready solution.

#ReactJS #ReactDeveloper #WebApplication #JavaScript #ReactHooks #NextJS #Redux #ContextAPI #ComponentBasedDesign #SinglePageApplication #CustomWebApp #ScalableSolutions #ModernWebDevelopment #CleanCode
Programming Languages
JavaScript, Python, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Localization, Performance Optimization

What's included $100

These options are included with the project scope.

$100
  • Delivery Time 2 days
  • Number of Revisions 0
5.0
2 reviews
100% Complete
(2)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)

SR

Steven R.
5.00
Dec 3, 2025
Instagram Api Clean up Rovshen is very patient and understanding.

MM

MK M.
5.00
Sep 25, 2025
Ionic + Angular Developer for RevenueCat & Stripe Integration We had a great experience working with Rovshen. He successfully implemented the payment system in our app with excellent attention to detail and clear communication throughout the process. He was professional, reliable, and delivered the work on time. We’re very satisfied with the results and would gladly work with him again on future projects. Highly recommended!
Rovshen G.Status: Offline

About Rovshen

Rovshen G.Status: Offline
8+Yrs | AI SaaS Engineer & Ex-CTO | Your Long term Technical Partner
100% Job Success
5.0  (2 reviews)
Kings County, United States - 4:29 am local time
If you're building an AI powered product and need someone who can own the full stack
from LLM architecture to production UI you're in the right place.

I'm a Senior AI Full Stack Engineer with 8+ years of experience designing and shipping
systems that combine deep AI backends with polished, performant frontends.

My stack: Python (FastAPI, Django) · Node.js · Next.js · TypeScript · React ·
LangChain · LangGraph · OpenAI · Claude · Pinecone · PostgreSQL · AWS

─────────────────────────────────────────
WHAT I BUILD
─────────────────────────────────────────

→ AI Full Stack Applications
Next.js + Python backends with real-time LLM streaming, auth, and multi-tenancy

→ RAG & Knowledge Systems
Hybrid retrieval (dense + sparse), reranking, embedding optimization, citations

→ Agentic AI Systems
Tool-calling agents with memory, orchestration layers, and reflection loops

→ Scalable API Backends
FastAPI / Node.js microservices, async pipelines, RBAC, REST & GraphQL

→ Compliant Enterprise AI
HIPAA-ready healthcare AI, FinTech-grade secure backends

─────────────────────────────────────────
PRODUCTION SYSTEMS I'VE SHIPPED
─────────────────────────────────────────

✔ AI clinical documentation agent — HIPAA-compliant, EHR-integrated, in active use
✔ Enterprise RAG platform — hybrid search over structured + unstructured data at scale
✔ AI SEO intelligence SaaS — semantic analysis across billions of documents
✔ Geospatial risk engine — PostGIS + H3 + real-time scoring for PropTech client
✔ Autonomous ingestion agents — schema drift detection, background orchestration
✔ AI marketing SaaS — website and campaign generation from natural language prompts
✔ Secure multi-tenant SaaS — role-based access, audit logging, enterprise deployment

─────────────────────────────────────────
FULL STACK AI — WHAT THAT MEANS
─────────────────────────────────────────

Most AI engineers can't build the frontend.
Most frontend engineers can't architect the AI layer.

I do both — and I connect them cleanly:

- Python AI backend → FastAPI / LangGraph / async inference pipelines
- Node.js middleware → BFF layers, webhooks, queue workers, integrations
- Next.js frontend → Server components, streaming UI, real-time AI interfaces
- Vector + Relational DB → Pinecone, PostgreSQL, Redis, Elasticsearch
- Cloud → AWS (EC2, Lambda, S3, RDS), Docker, Kubernetes, CI/CD

─────────────────────────────────────────
HOW I WORK
─────────────────────────────────────────

I don't prototype and disappear. I take projects through:

Architecture → MVP → Production Hardening → Monitoring → Scale

You get: clean documentation, maintainable code, and a partner who communicates clearly
and moves fast.

─────────────────────────────────────────
LET'S WORK TOGETHER
─────────────────────────────────────────

Send me:
- What you're building
- Your timeline and budget

I'll respond within 24 hours and tell you exactly how I'd approach it.



Core Stack
Next.js Developer, Python, Node.js, TypeScript, React, FastAPI Developer, Django, Express.js

AI & LLMs
LLM Application Development, LangChain Developer, LangGraph, RAG Engineer, AI Agent Architect, Prompt Engineering, Multi-Agent Systems, Fine-Tuning (LoRA/QLoRA), LLM Evaluation, Generative AI, OpenAI API, Claude API, Gemini API

Data & Search
Retrieval-Augmented Generation, Vector Database, Pinecone, Weaviate, Milvus, Semantic Search, Hybrid Search, Elasticsearch, PostgreSQL pgvector

Backend & Infra
REST API, GraphQL, Microservices, Serverless, AWS (Lambda, EC2, S3), Docker, Kubernetes, CI/CD, Async Python, Queue Workers (Celery, Bull)

Domains & Compliance
HIPAA-Compliant Developer, Healthcare AI (HealthTech), FinTech Backend, SaaS Architecture, Multi-Tenant Systems, SOC2, Role-Based Access Control (RBAC)

Long-Tail Phrases
"tool-calling agents with memory", "hybrid dense and sparse retrieval", "real-time LLM streaming", "EHR-integrated AI", "autonomous ingestion agents", "production AI systems"

Steps for completing your project

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

Delivery time starts when Rovshen receives requirements from you.

Rovshen works on your project following the steps below.

Revisions may occur after the delivery date.

Requirement Review & Initial Consultation

Once the project begins, I’ll review your design files and requirements. If anything needs clarification, we can schedule a quick call to make sure we’re on the same page.

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