Senior Enterprise Full-Stack Developer | SaaS, AI & Scalable Web App

Senior Enterprise Full-Stack Developer | SaaS, AI & Scalable Web Applications

Build reliable, secure, and scalable web applications for real business use not just prototypes.

Enterprise applications often involve complex business logic, multiple user roles, large datasets, payments, third-party integrations, real-time communication, automation, AI, reporting, and strict security requirements. A strong product needs solid architecture across the frontend, backend, database, APIs, and infrastructure.

What Your Business Can Get

• Enterprise SaaS and multi-tenant platforms

• CRM, ERP, case management, and workflow systems

• Customer portals, admin panels, and operational dashboards

• Marketplaces, eCommerce, booking, and subscription platforms

• AI-powered applications, assistants, RAG, and automation

• Real-time messaging, notifications, and collaboration

• Payment, billing, subscription, and invoicing systems

• Role-based access control and secure authentication

• Document management, OCR, extraction, and AI analysis

• Reporting, analytics, search, and data-heavy applications

• REST APIs, webhooks, background jobs, and third-party integrations

• Legacy application modernization and performance optimization

Industries

FinTech & Payments — transactions, billing, subscriptions, financial workflows, and dashboards.

Healthcare & Wellness — secure portals, scheduling, document systems, and AI-assisted workflows.

AI & SaaS — LLM applications, RAG systems, AI agents, intelligent search, and automation.

Sports & Fitness — coaching, booking, memberships, analytics, and user management.

eCommerce & Retail — catalogs, orders, payments, inventory, and customer platforms.

Logistics & Operations — tracking, scheduling, workflow automation, and operational dashboards.

Technical Stack

Frontend: React, Next.js, TypeScript, JavaScript, Tailwind CSS

Backend: Python, FastAPI, Django, Node.js, NestJS, Express

Database: PostgreSQL, MySQL, MongoDB, Redis, Supabase, pgvector

AI: OpenAI, Claude, Gemini, LLMs, RAG, LangChain, LlamaIndex, embeddings, vector search, OCR, AI agents

Cloud: AWS, Docker, Nginx, Cloudflare, Linux, CI/CD

Integrations: Stripe, PayPal, Twilio, authentication providers, mapping services, payment gateways, webhooks, and custom APIs.

Existing Applications

Growing applications can develop slow APIs, database bottlenecks, technical debt, deployment problems, security gaps, or architecture limitations.

Enterprise Development

The focus is on maintainable architecture, reliable APIs, secure authentication and authorization, efficient databases, scalable infrastructure, background processing, monitoring, and clean deployment workflows.

From a new SaaS product to a complex existing platform, the objective is straightforward: solve the business problem with software that can continue to grow with the business.