Khimaji Valukiya (Khimji Valukiya) | Senior Full-Stack Developer, AI Engineer & Cloud Architect

My Expertise

What I Do

Full-Stack Expertise

12+ years building fast, secure, and scalable web applications using Next.js, Laravel, PHP, Node.js, and React.

AI & Machine Learning

Building intelligent applications with OpenAI, Claude, LangChain, and custom ML models for automation and insights.

AI Chatbots & Agents

Developing conversational AI chatbots, virtual assistants, and autonomous agents using LLMs and RAG architectures.

Healthcare Technology

Healthcare ERP, telemedicine, EMR, and patient portals built with HIPAA, DHA, and NABIDH compliance in mind.

ERP & ERPNext Solutions

Custom ERP modules, ERPNext customization, and business process automation on the Frappe Framework.

MCP Servers & AI Agents

Building Model Context Protocol servers, AI agents, and local LLM deployments with Ollama and Llama models.

UI/UX & SEO Focused Design

Pixel-perfect, responsive layouts with W3C-compliant code, SEO-optimized structure, and mobile-first design.

Performance Optimization

Improve load times, TTFB, Core Web Vitals with code-level and server-side optimization, caching, and indexing.

Backend Architecture

Robust backend systems with Laravel, Node.js, REST APIs, clean architecture, and scalable microservices.

Database Expertise

Advanced experience with MySQL, PostgreSQL, and MongoDB including query optimization and schema design.

Mobile App API Development

I design lightweight and secure APIs for Android/iOS apps using RESTful architecture and scalable backend.

Twilio Integration

Implemented SMS, WhatsApp, and voice call features using Twilio APIs for verification, alerts, and automation.

Ubuntu Server Configuration

Server setup, NGINX/Apache config, SSL, domain pointing, cron jobs, firewall security, and Docker containers.

Amazon EC2 Expert

Custom EC2 deployment, autoscaling setup, and server management for high-availability cloud hosting.

Microsoft & Business Central API

Integrated Dynamics 365 Business Central APIs, with knowledge of Azure and enterprise-grade architecture.

E-Commerce Development

Magento 2 & custom eCommerce with seamless checkout, product filtering, cart management, and payment integration.

Security First Development

Follow best practices in input validation, HTTPS, authentication, and secure deployment on all layers.

Research & Debugging

I solve complex problems quickly through in-depth debugging, research, and reverse-engineering bottlenecks.

End-to-End Ownership

From wireframes to live production, I handle design, dev, testing, optimization, and server deployment with accountability.

Result-Oriented Delivery

I think beyond requirements to deliver real business impact, focusing on usability, conversion, and long-term value.

My Abilities

Skills & Technologies

Frontend

React.js95%

Next.js92%

TypeScript90%

HTML5/CSS398%

Tailwind CSS88%

Backend

PHP/Laravel95%

Node.js/Express92%

Python85%

CodeIgniter88%

REST APIs95%

Database

MySQL95%

PostgreSQL90%

MongoDB85%

Redis82%

AI & Automation

OpenAI/ChatGPT92%

Claude AI90%

MCP Servers88%

Local LLMs (Ollama/Llama)85%

RAG & AI Agents85%

ERP & Business Solutions

Frappe Framework88%

ERPNext88%

Custom ERP Modules85%

Workflow Automation90%

Healthcare Technology

Healthcare ERP / EMR88%

Telemedicine Platforms85%

HIPAA Compliance85%

DHA / NABIDH Compliance82%

Cloud & DevOps

AWS90%

Microsoft Azure82%

Docker85%

Linux / Nginx92%

CI/CD Pipelines85%

eCommerce & CMS

Magento 285%

WordPress / WooCommerce90%

Payment Gateways90%

Stripe / Twilio88%

Leadership & Delivery

Technical Project Mgmt92%

Agile / Scrum90%

Team Leadership90%

Performance Optimization92%

Career Path

Work Experience

12+

Years Experience

40+

Jobs Completed

412+

Hours on Upwork

100%

Job Success

Senior Full-Stack Developer, AI Engineer & Cloud Architect

2022 - Present

Freelance (Upwork)

Delivering end-to-end web, AI, ERP, and healthcare solutions for clients worldwide. Specializing in Next.js, Laravel, AI/automation, ERPNext, and cloud infrastructure. Achieved 100% Job Success Score and Top Rated status.

40+ Jobs Completed100% Job SuccessTop Rated412+ Hours

Technical Project Manager

2018 - 2022

IT Services Firms

Led cross-functional development teams in delivering complex web applications. Managed project lifecycles, client communications, and technical architecture decisions. Implemented agile methodologies and CI/CD pipelines.

Team LeadershipProject ManagementAgile/ScrumClient Relations

Senior Full-Stack Developer

2015 - 2018

IT Services Firms

Architected and developed scalable web applications using PHP/Laravel and Node.js. Mentored junior developers and established coding standards. Implemented cloud deployments on AWS.

System ArchitectureAWS InfrastructureCode ReviewsMentoring

Web Developer

2012 - 2015

IT Services Firms

Developed custom web applications, e-commerce platforms, and content management systems. Built expertise in PHP, MySQL, JavaScript, and responsive design.

E-Commerce DevelopmentCMS SolutionsAPI Integration

Technical Insights & Knowledge Sharing

My Blog

5 min read

Building Intelligent Chatbots with LangChain and OpenAI

Learn how to create powerful AI chatbots using LangChain framework, RAG architecture, and OpenAI APIs for enterprise applications.

7 min read

Next.js 14: Server Actions and Best Practices for Production

A comprehensive guide to leveraging Next.js 14 features including Server Actions, App Router, and optimization techniques.

6 min read

Scaling Laravel Applications: From Monolith to Microservices

Strategies for scaling Laravel applications including queue optimization, caching, and transitioning to microservices architecture.

4 min read

AWS EC2 Cost Optimization: Reduce Your Cloud Bill by 50%

Practical strategies for optimizing AWS costs including right-sizing, reserved instances, and auto-scaling configurations.

5 min read

RESTful API Design: Principles for Scalable Mobile Backends

Best practices for designing RESTful APIs that power mobile applications, including versioning, pagination, and security.

6 min read

MySQL Performance Tuning: Query Optimization Techniques

Advanced MySQL optimization techniques including indexing strategies, query analysis, and configuration tuning for high-performance applications.

View All Blogs

Common Questions

Frequently Asked Questions

What makes you different from other developers?

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With 12+ years of experience, 40+ successfully delivered projects on Upwork with a 100% Job Success score and Top Rated status, I bring proven expertise and reliability. I specialize in both full-stack development and cutting-edge AI solutions, allowing me to build intelligent, scalable applications that solve real business problems.

What AI and chatbot services do you offer?

I build custom AI solutions including intelligent chatbots using OpenAI GPT, Claude, and LangChain; document processing and RAG systems; AI-powered automation workflows; custom AI integrations into existing applications; and conversational AI for customer support. I can help you leverage AI to automate tasks and enhance user experiences.

What technologies do you specialize in?

I specialize in full-stack development using React, Next.js, Node.js, PHP/Laravel, and Python. For AI development, I work with OpenAI, Claude API, LangChain, and vector databases. I'm also proficient in MySQL, PostgreSQL, MongoDB, AWS services, and Docker for cloud deployments.

What is your availability and working hours?

I am available full-time (40+ hours/week) with over 412+ hours logged on Upwork. I work flexible hours to accommodate different time zones and typically respond to messages within a few hours during business days.

Do you work with clients outside of Upwork?

Yes, I work with clients both on Upwork and directly. For direct engagements, I offer flexible payment options and can sign NDAs or contracts as needed to protect your project and intellectual property.

Can you work with existing codebases?

Absolutely! A significant portion of my 12+ years of experience involves maintaining, optimizing, and extending existing applications. I can quickly understand legacy code, identify performance bottlenecks, and implement improvements without disrupting existing functionality.

What is your typical project process?

My process includes: 1) Discovery & Requirements gathering, 2) Technical planning & estimation, 3) Agile development with regular milestones and demos, 4) Comprehensive testing & QA, 5) Deployment & documentation, and 6) Post-launch support. I maintain clear communication and keep you involved at every stage.

Do you provide post-project support and maintenance?

Yes, I offer ongoing maintenance and support packages. After project completion, I provide a warranty period for bug fixes and am available for future enhancements, scaling, or modifications. Many of my clients have been working with me for years on continued development.

Contact

Contact With Me

Khimaji Valukiya

Senior Full-Stack Developer | AI Engineer | Cloud Architect | Technical Project Manager

Your Trusted IT Partner based in Ahmedabad, India, with 12+ years of hands-on experience building scalable web apps, AI-powered solutions, ERP platforms, healthcare systems, and cloud infrastructure. Available full-time and ready to deliver results that exceed expectations.

Location: Ahmedabad, IndiaPhone: +91 8264009007Email: d.valukiya@gmail.com