You will get a robust Full-Stack SaaS and Enterprise Portal Architecture
Project details
Building a scalable SaaS product or internal enterprise portal requires far more than just writing basic scripts—it requires strict database schemas, robust APIs, and scalable infrastructure.
As a Lead Full-Stack Architect, I specialize in engineering highly decoupled, type-safe environments that do not crash under pressure. I transition legacy monoliths or raw concepts into optimized, modern web ecosystems designed for enterprise-level scale.
What I Architect & Build:
• Custom Enterprise Portals & Dashboards
• Complex, Multi-Tier SaaS Backends (Node.js, Express)
• Responsive, State-Managed Frontends (React, Angular)
• Secure Third-Party API Bridges (Payment gateways, CRMs, Auth)
• Relational Database Schemas (PostgreSQL, Prisma ORM)
My approach ensures zero-downtime deployments, strict runtime validations, and multi-tenant capabilities built for scale. Stop patching together fragile plugins. Let's discuss your architectural bottlenecks and build a centralized system that performs flawlessly.
As a Lead Full-Stack Architect, I specialize in engineering highly decoupled, type-safe environments that do not crash under pressure. I transition legacy monoliths or raw concepts into optimized, modern web ecosystems designed for enterprise-level scale.
What I Architect & Build:
• Custom Enterprise Portals & Dashboards
• Complex, Multi-Tier SaaS Backends (Node.js, Express)
• Responsive, State-Managed Frontends (React, Angular)
• Secure Third-Party API Bridges (Payment gateways, CRMs, Auth)
• Relational Database Schemas (PostgreSQL, Prisma ORM)
My approach ensures zero-downtime deployments, strict runtime validations, and multi-tenant capabilities built for scale. Stop patching together fragile plugins. Let's discuss your architectural bottlenecks and build a centralized system that performs flawlessly.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$95
|
Standard
$500
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 3 days | 14 days | 30 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | |||
Content Upload | - | - | |
Responsive Design | |||
Source Code |
Frequently asked questions
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CA
Christopher A.
Jun 5, 2023
Seeking HubSpot API Expert to create Custom Card that populates object property value from JSON
Krunal was great to work with. Very knowledgeable and great communication.
NG
Nimit G.
May 2, 2023
Lead Flow Process Optimization- HubSpot+Webflow+ZoomInfo Integration
Krunal was really helpful and finished the task quickly. He was communicative and ensured that the problems were taken care of. The deadlines were met and the complete project was delivered. I'll recommend his services.
JB
Jordan B.
Dec 28, 2021
WordPress Theme / Site Speed Expert
Krunal is the best freelancer I’ve worked with in 8+ years. It's immediately clear that he's an expert in his field, and he went far above my job requirements to ensure I was satisfied with every aspect of his work.
Krunal's task was to improve my website speed, and he took my Google Lighthouse speed scores up to 90+ (on mobile) and 95+ (on desktop) on virtually every page. He asked thoughtful questions throughout the project to ensure he was making the right decisions, and at the end of the project, we had a 30-minute call where he explained all of the changes he made and answered my questions about those changes.
I am extremely satisfied with Krunal's work and will hire him again whenever I get a chance. If you have the opportunity to work with Krunal, you will not be disappointed.
Krunal's task was to improve my website speed, and he took my Google Lighthouse speed scores up to 90+ (on mobile) and 95+ (on desktop) on virtually every page. He asked thoughtful questions throughout the project to ensure he was making the right decisions, and at the end of the project, we had a 30-minute call where he explained all of the changes he made and answered my questions about those changes.
I am extremely satisfied with Krunal's work and will hire him again whenever I get a chance. If you have the opportunity to work with Krunal, you will not be disappointed.
About Krunal
Senior Full-Stack Architect | GenAI (Gemini) | Angular/React | Node.js
Vadodara, India - 6:19 am local time
I spent the last 10 years fully dedicated to that role as Technical Lead — heads-down, shipping, not bidding on Upwork. I'm opening up capacity for new projects again now, bringing current, production experience in Node.js, React, Angular, and Google Gemini-powered AI features straight from active enterprise work.
⚙️ WHAT I DO
• Architecture & Leadership — Full SDLC ownership: database schema design, code quality standards, and delivery management for distributed teams.
• Enterprise Platforms & LMS — Built and scaled internal operational hubs, SaaS scheduling systems, and large LMS platforms, with multi-tier RBAC for different employee and learner roles.
• Generative AI Integration — Production use of the Google Gemini SDK and AI Studio for automated content engines, adaptive testing tools, and AI-assisted curriculum generation.
• Legacy Modernization — Migrating monolithic systems into decoupled, type-safe architecture without halting feature delivery mid-transition.
• Performance & Infra — Serverless via Firebase, background job processing with BullMQ/Redis, server administration (WHM/cPanel, SSL).
🛠️ TECH STACK
Frontend: Angular, React, TypeScript, Tailwind CSS, PWA
Backend: Node.js, Express, PHP (Laravel, Slim)
Data: PostgreSQL, MySQL, Firestore, Redis, BullMQ
AI / Cloud: Gemini API, Google AI Studio, Ollama, Firebase, Cloudflare
If you need someone to map out the architecture, own the backend logic, or both — send me what you're building. I'll give you a direct, specific read on scope within a few hours, not a generic pitch.
Steps for completing your project
After purchasing the project, send requirements so Krunal can start the project.
Delivery time starts when Krunal receives requirements from you.
Krunal works on your project following the steps below.
Revisions may occur after the delivery date.
Architecture Audit & Schema Design
We begin by mapping out your data structure, defining the PostgreSQL database schema, and drafting the API blueprint to ensure the foundation is completely type-safe and scalable.
Core Backend & API Construction
I engineer the Node.js/Express backend, implement strict Role-Based Access Control (RBAC), and build out the secure data pipelines and third-party API integrations.