Software engineer with 10+ years across full-stack web, mobile work, enterprise apps, and data engineering. Most of my backend work is in Python (FastAPI mainly, some Django) and Node.js, with a fair amount of C# / .NET and PHP / Laravel on enterprise projects. On the frontend I work in React/React Native with TypeScript. A good portion of my recent work has been on Microsoft Dynamics 365 and the Power Platform - writing C# plugins and custom workflows, and a lot of client-side JavaScript for form scripts, ribbon buttons, and web resources to handle business logic the out-of-the-box config can't cover. On the data side I build ETL pipelines, data warehouses, and reporting dashboards. I use Spark when the volume justifies it and Airflow to keep the pipelines running on schedule. Day to day I work across MS SQL Server, MySQL, and PostgreSQL. For reporting I mostly deliver in Power BI, and Tableau when the client is already on it. I care about code that's fast, doesn't break in production, and is easy for the next person to pick up. Happy to jump on a quick call to talk through what you need.

I'm a highly skilled API & ETL developer with over 10 of experience building scalable, secure, and efficient data integration solutions. Whether you're a startup needing to connect multiple SaaS platforms or an enterprise modernizing legacy pipelines, I help you unlock the full potential of your data. ✅ What I Do Best: API Development & Integration REST | GraphQL | SOAP | Webhooks | Authentication (OAuth2, JWT) I design and build robust APIs or integrate with third-party services (Salesforce, HubSpot, Stripe, etc.) ✅ ETL/ELT/EDI Pipeline Design Airflow | Talend | Apache NiFi | dbt | Azure Data Factory | Informatica Clean, transform, and move data across systems efficiently and reliably. ✅ Data Integration & Automation Seamless connections between databases, cloud platforms, CRMs, ERPs, and custom apps using Python, SQL, and low-code tools like Zapier,N8N, Servicenow,MuleSoft,Workato and Make com ✅ Cloud Platforms & Databases AWS | GCP | Azure | Snowflake | Redshift | BigQuery | PostgreSQL | MongoDB 🛠️ Tech Stack Highlights: Python,PHP, SQL, FastAPI, Flask, Node.js, Docker, Kubernetes, Apache Kafka, JSON/XML, Pandas, Git 🎯 Why Clients Hire Me: Strong communicator who understands both tech and business Agile, clean, and scalable code Proven track record of reducing manual processes & saving teams hours per week 100% commitment to project success and client satisfaction Let’s talk about how I can help streamline your data flows, reduce bottlenecks, and deliver fast, reliable integration that scales.

I work on SaaS products, marketplaces, dashboards, and internal platforms, usually across both the frontend and backend. My day-to-day stack includes React, Next.js, Node.js, Laravel, Python, PostgreSQL, APIs, payments, and cloud deployment. Recent Upwork work includes a Laravel and React SaaS foundation, React PWA troubleshooting, Leaflet.js mapping, payment-gateway integration, a municipal asset-intelligence platform, and feature development inside existing applications. I have also reviewed architecture and delivery plans before clients committed to larger builds. GAIA is one of the larger products I have worked on. It is a recruitment-marketing platform connected to more than 11 advertising channels. My work covered campaign flows, channel integrations, reporting, and the data used by its recommendation features. The platform draws on 6,000+ campaigns and 50,000+ ads, and has supported millions of impressions and hundreds of thousands of candidate interactions. Pathfinder is a browser-based geospatial platform built around 2 TB+ of survey data, more than two million panoramic images, LiDAR, mapping services, and 66+ asset categories. I worked on data processing, map performance, permissions, reporting, and the loading of large visual datasets. The application gives field and asset teams a practical way to work with information that was previously spread across specialist files and tools. I also worked on Psydro, a UK multi-vendor marketplace with merchant onboarding, VAT checks, stock feeds, and Stripe Connect payouts. Its integrations include Linnworks, Storefeeder, Channel Grabber, Amazon, eBay, and Etsy. My part covered product flows and the payment rules behind discounts, commission, refunds, and merchant payouts. I work regularly on: • Multi-tenant SaaS, subscriptions, permissions, and admin panels • React and Next.js applications with Node.js, Laravel, or FastAPI • Marketplaces, portals, CRMs, and internal operations software • Stripe, reporting, third-party APIs, and scheduled background jobs • Taking over an existing codebase and shipping new modules safely • Rebuilding an MVP when the original version is no longer enough For a takeover, I first get the application running locally, review how it is deployed, and identify the safest release to make first. On a new product, I work through users, roles, data, billing, and the main flows before development gets too far ahead. Core technologies: React, Next.js, TypeScript, Node.js, Laravel, FastAPI, PostgreSQL, MongoDB, Supabase, Redis, Stripe, AWS, and Docker. I can work as the main product developer or alongside an established engineering team.

Salesforce Architect and Consultant with 13+ years of hands-on experience, helping businesses streamline operations, enhance customer engagement, and drive growth through custom Salesforce solutions. 🔹 Top 10% Salesforce Developer on Upwork 🔹 100% Job Success | 12,000+ Hours | $100K+ Earned 🔹 5-Star Feedback ⭐⭐⭐⭐⭐ & High Client Retention 🔹 AppExchange Product Developer | Agentforce | AI Agent 🔹 Available 24/7 | 45–50 Hours/Week 🔖 Certifications – 7x Salesforce Certified • Salesforce Certified Data Cloud Consultant • Salesforce Certified Agentforce Specialist • Salesforce Certified Platform App Builder • Salesforce Certified Platform Developer I • Salesforce Certified Sales Cloud Consultant • Salesforce Certified Service Cloud Consultant • Salesforce Certified Administrator 🏆 Career Highlights ✅ 50+ Salesforce implementations (Sales, Service, Experience, and Marketing Cloud) ✅ 120+ successful Salesforce integrations ✅ Published AppExchange App – from ideation to deployment ✅ Enterprise-grade CRM optimization for Healthcare, E-commerce, Real Estate, Tax Depreciation, Finance, and more 🛠 Industries Served Healthcare | E-commerce | Education | Non-Profit | Real Estate | Pharma | Automotive 💼 Core Competencies: • Salesforce Configuration & Customization (LWC, Aura, Apex, Flows) • Agentforce & AI Integration • Data Cloud & Salesforce Einstein • AppExchange Product Development • Salesforce Integrations (REST/SOAP APIs, Middleware) • Data Migration & Quality Management • Mobile App & Product Engineering • 3rd-party Integrations (DocuSign, G-Suite, QuickBooks, etc.) • AI Voice Agent (Retell AI, Twilio Voice, Vapi) Great With: * SaaS & CRM Solutions *Extensive experience in Salesforce Implementation, Development, Administration, Company Setup, High level of Customization, Configuration, Apex, Visualforce pages, Creating Triggers, Data quality management, and Data migrations from & to Salesforce, Mobile administration, Customizing Dashboards, Reports, Searches, Standard Objects, Workflow actions, Assignment rules, and Validation rules. * Extensive experience in integration with Social Media, payment gateways, Google Apps, QuickBooks, MailChimp, Constant Contact, Microsoft SQL Server, external system integration, DocuSign, G-Suite * Extensive experience in formula fields, workflows, Data Security, Reports, Dashboards, Data Import & Data migration In the past 12+ years, I have dedicated myself to learning how to improve processes for manufacturing, customer service, and program & software integration. I believe this journey has made me an excellent fit for understanding the needs your team has for their CRM. 📩 Let’s Connect Ready to transform your Salesforce experience? Let’s talk about how I can help you optimize, integrate, or scale your CRM.

I build enterprise platforms that last — not prototypes that get rewritten. My longest engagement is 6+ years with a single client, growing from 4 modules to a 9-module field operations platform. That's the kind of work I'm looking for. Recently I've been focused on AI systems engineering — RAG pipelines, LLM API integration, and WhatsApp-based AI agents running in production on SaaS platforms. 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 Complex, long-term platforms — not one-off fixes or quick integrations. My clients are typically building something serious: a multi-tenant SaaS, an enterprise operations platform, or a system where AI needs to work reliably in production, not just in a demo. They need an architect who can own the technical direction end to end, communicate clearly with non-technical stakeholders, and stay consistent over years — not months. If you have a well-defined short-term task, I'm probably not the right fit. If you're building something that needs to scale and last, let's talk. 𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬 ✦ Engineering Field Operations (Calgary, Canada): Built a 9-module enterprise platform from the ground up for an automation engineering firm. Modules include commissioning completion, project planning with WBS and SPI tracking, asset lifecycle management, document control with version management, safety management with FLHA workflows, and PDF generation engine. 6+ years. Stack: .NET Core, Angular, SQL Server, Azure, E-Signature API. ✦ AI & Platform Engineering (GeoWise): Architected an event-driven automation layer using Azure Service Bus and engineered a RAG pipeline to parse, index, and retrieve data via LLM APIs with conversational memory state management. Integrated WhatsApp Business API for AI-driven client communication and Sadad payment gateway for Gulf-region bookings. Stack: .NET 8, Next.js, Azure Service Bus, Azure Functions, SQL Server, OpenAI API, WhatsApp Business API. ✦ FinTech (InstaPaid, Denmark): Architected payroll system integrations and core workflows using .NET 8, C#, and Azure Functions for a GDPR-compliant earned wage access platform. Integrated with Danske Bank, Planday, Zenegy, Intect, SameSystems, and Aiia. Stack: .NET 8, React, SQL Server, Azure B2C, Azure Functions. ✦ Healthcare (Amaze PBC): Built and integrated Physician Support, EHR integration, and Prescription Tracking. Stack: ASP.NET Core, SignalR, Azure. ✦ Logistics (RPM Moves): Built 10+ microservices for a North American vehicle logistics platform. Salesforce API, DAT API, Central Dispatch integration, Docker, Kubernetes, Azure DevOps, CI/CD, Elastic Search logging. Stack: .NET Core/5/6/7, React, Redux Toolkit, SQL Server. ✦ E-commerce / SaaS (Holidog, Hector Kitchen): Payment gateway integration (Stripe, Adyen), multilingual platforms, complex subscription management. Stack: .NET Core, Angular, React, MVC. 𝐂𝐨𝐫𝐞 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 / 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 ✔️ Architectural Patterns: Microservices, CQRS, TDD, DDD, UOW, Repository ✔️ C#, ASP.NET Core / MVC / Web API ✔️ AI Systems: RAG, Vector Search, Semantic Retrieval, Context & State Management ✔️ Data Persistence: Entity Framework, NHibernate, LINQ ✔️ Database: SQL Server, MySQL, MongoDB, RethinkDB, Redis, Elastic Search 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 / 𝐔𝐈 ✔️ Angular (up to v18), ReactJS, Next.js ✔️ TypeScript, JavaScript, jQuery ✔️ State Management: Redux (Ngrx, angular2-redux) ✔️ UI: HTML5, CSS3, Bootstrap, LESS/SCSS, Kendo UI 𝐂𝐥𝐨𝐮𝐝 / 𝐃𝐞𝐯𝐎𝐩𝐬 ✔️ Microsoft Azure: Functions, Service Bus, Queues, Blob Storage, B2C, Document DB ✔️ Containerization: Docker, Kubernetes / AKS ✔️ CI/CD: Azure DevOps, AWS, Octopus, GitHub Actions ✔️ Code Management: Git, GitLab, Bitbucket, TFS 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 MC ID: 13222222 Microsoft Certified Solutions Developer (MCSD) Microsoft Certified Solutions Associate (MCSA) I work best on complex, long-term engagements where architecture decisions matter and consistency of delivery over time is what the client actually needs. If that sounds like your project, let's talk.

Full-Stack & Data Engineer with experience building data-heavy applications, automation systems, internal tools, and AI-powered workflows. I work with Python, SQL, FastAPI, Postgres, Retool, Metabase, APIs, and LLM tools to build reliable systems from backend logic and data pipelines through to usable dashboards and applications.

I help businesses turn Salesforce into a powerful, revenue-driving system by optimizing processes, automating workflows, and building scalable solutions tailored to real business needs. With 7+ years of hands-on Salesforce experience, I don’t just configure Salesforce, I design systems that improve efficiency, data quality, and team performance. What I Can Do for You Salesforce Setup & Administration • User setup, roles, profiles, and permission sets • Security model and access control optimization • Clean and scalable org structure Customization & Configuration • Custom objects, fields, page layouts • Validation rules and business logic • Advanced automation using Flows, Process Builder, Workflow Rules Process Automation • Sales pipeline automation (Sales Cloud) • Service workflows and case management (Service Cloud) • Reduction of manual work through smart automation Reports & Dashboards • Custom reports for actionable insights • Real-time dashboards for performance tracking • KPI-driven analytics Data Management • Data cleanup and de-duplication • Data validation and integrity • Structured data imports and migrations Integrations & Development • API integrations with third-party tools (Outlook, QuickBooks, etc.) • Custom development using Apex, Visualforce, Lightning • JavaScript and HTML for UI enhancements System Optimization • Identify bottlenecks and inefficiencies • Improve performance and usability • Apply Salesforce best practices Training & Support • End-user onboarding and training • Ongoing support and system guidance • Improving user adoption Why Clients Work With Me • 7+ years of Salesforce experience • Certified Salesforce Administrator • Strong mix of Admin, Developer, and Architect expertise • Focus on business outcomes, not just technical setup • Proactive problem-solving approach • Experience across multiple industries Additional Technical Skills • Python, Node.js, SQL • Git, APIs, system integrations • HTML5, CSS, JavaScript, jQuery • PHP, WordPress • Excel and data analysis If you need to optimize Salesforce, automate workflows, improve reporting, or build a scalable CRM system, I can help. Let’s connect and discuss your project.

I build AI features that ship inside real products, not demos. Three are live right now: PoweredByHue (AI-curated shoppable UGC), RealReports.ai (AI property intelligence across the US), and MaxHome.ai. Senior engineer, 20 years across AI, data engineering, full-stack, cloud, and security. Most of my work sits where those overlap: an LLM or RAG system that needs clean data behind it and a real app in front of it. AI engineering. LLM and RAG systems wired into apps people actually use. LangChain, LangGraph, OpenAI, and vector databases (Pinecone, Weaviate, Chroma). I handle the full path: retrieval, embeddings, context handling, and the app it lives in, so the feature is reliable instead of a clever one-off. Data engineering. The pipelines that feed those systems. ETL/ELT on AWS, Azure, and GCP with Snowflake, dbt, Airflow, and Power BI. I have migrated legacy SQL Server and SAP BW into a hybrid Snowflake-Azure platform and built cross-cloud pipelines for real-time analytics. Full-stack and DevOps. React, Angular, Vue, and Next.js on the front; Node, FastAPI, .NET, and Spring on the back. Docker, Terraform, CI/CD, and Kubernetes to ship it and keep it running. Background that shows up in the work: First Responder at AWS, Production System Engineer at ByteDance, and Application Security Analyst at RedShield. So the systems I build are reliable and secure by default, not just functional. How I work: I give you ranges, not guesses. I flag risks early. I start with the simplest thing that works and add only what the project needs. If you have an AI build, or a data pipeline that needs to feed one, send me the details and I will tell you exactly how I would approach it. #FullStack #SoftwareEngineer #CloudArchitect # DevOps # BackendDeveloper #FrontendDeveloper #SystemArchitecture #Microservices #CloudComputing #EnterpriseSoftware #ReactJS #VueJS #QuasarFramework #JavaScript #TypeScript #HTML #CSS #SASS #LESS #TailwindCSS #Bootstrap #MaterialUI #NodeJS #PythonFlask #JavaSpring #Go #Golang #Ruby #RESTAPI #GraphQL #MySQL #PostgreSQL #MongoDB #Redis #Kafka #Docker #LXC #VMware #VirtualBox #CI_CD #Kubernetes #Terraform #Ansible #Serverless #Nginx #Apache #Git #Gradle #Maven #Jira #Trello #Webpack #Vite #Babel #ESLint #Prettier #Storybook #Jest #Mocha #Cypress #Playwright #NextJS #NuxtJS #GatsbyJS #ExpressJS #FastAPI #SpringBoot #ApolloGraphQL #Prisma #TypeORM #Sequelize #Postman #Swagger #OpenAPI #SocketIO #WebSockets #RESTfulAPI #ProgressiveWebApps #PWA #SSR #SSG #CSR # WebPerformance #CodeSplitting #LazyLoading #CachingStrategies #ResponsiveDesign #CrossBrowserCompatibility #Accessibility #SEO #HeadlessCMS #Contentful #Strapi #SanityCMS #CloudFunctions #AWSLambda #AzureFunctions #GoogleCloudFunctions #CI_CD_Pipelines #DockerCompose #K8sDeployment #RedisCaching #MessageQueues #ElasticSearch #Algolia #Sentry #NewRelic #Datadog #Monitoring #Logging #ErrorTracking

✫ 2700+ work hours ✫ 30+ jobs completed ✫ 16+ years of experience ✫ 40+ hours/Week available ✫ Cost-effective ✫ Fluent English ✫ Product development ✫ Excellent Written and Spoken English Skills. ✫ 100% availability ✫ Professional Unique Designs & Customized Web Programming With over 15 years of experience in web, windows, and API development, I am a seasoned Full Stack Developer and IT Project Manager/Consultant. My expertise spans various domains such as ERP, e-commerce, healthcare, education, finance, and custom development. ♡ Review/Feedback ♡ ★ ★ ★ ★ ★ 5.00 "I highly recommend Kalpesh. He was very easy to work with and went out of his way to complete the project with perfection in mind." - Mike Brown ★ ★ ★ ★ ★ 5.00 "Kalpesh did good work for us regarding reading in Medical Insurance EDI file info. He was polite, diplomatic and very patient with a project of undetermined length. He went out of his way to give us more than we originally asked for." - David Longfellow ★ ★ ★ ★ ★ 5.00 "Kalpesh was fantastic on this project and tirelessly worked long hours in a short time to help address a very short term need. His work was high quality, his interaction was very professional, and we would use him again on future projects. Thanks." - Mark Sapnar ✔ Programming Languages - C# - VB.NET - ASP.NET - JavaScript - SQL - LINQ - Python ✔ Web Development - ASP.NET MVC - ReactJS - AngularJS - JavaScript - jQuery - AJAX - HTML/CSS - HTML5/CSS3 ✔ Database Management - MS-SQL Server - PostgreSQL - MySQL - Oracle - Database Design - Database Performance Optimization - Stored Procedures - SQL Queries ✔ API Development - RESTful APIs - .NET Core APIs - SOAP APIs - Postman - SoapUI ✔ UI/UX Design - Wireframing - Prototyping - User Interface Design - User Experience Design - Figma Prototype ✔ Frameworks and Tools - DevExpress - RDLC Report - Entity Framework - Team Foundation Server (TFS) - GitHub - Visual Source Safe (VSS) ✔ ERP Solutions - Financial/Account Management Systems - Inventory Management Systems - Supply Chain Management Systems - SaaS-based ERP Solutions - Custom ERP Development ✔ EDI and Healthcare - EDI Transactions (ANSI X12 – HIPAA standards) - Claim Processing (837P, 835) - Eligibility Inquiry/Response (270/271) - Claim Status Inquiry/Response (276/277) - HL7 and FHIR Standards - ICD10, SNOMED-CT, LOINC, HCPCS Integration ✔ Project Management - Agile Methodologies (Scrum) - Waterfall Methodologies - Resource Management - Risk Management - Budget Planning - Project Scheduling - Documentation and Reporting ✔ Product Development - End-to-End Product Development - Requirement Gathering - System Design - Coding and Testing - Deployment and Maintenance ✔ Tools and Platforms - Visual Studio - VS Code - Visual SVN - Jira - Slack - ClickOne - Teams - Azure Feel free to reach out to discuss your project requirements and how I can help you achieve your goals with my extensive experience and skill set. Thank you for your time($$$) and consideration. I look forward to collaborating with you soon.

⚡️AI Engineer ⚡️Chatbot developer ⚡️Database Development ⚡️ Data Engineering ⚡️ Cloud 🚀 AI Engineer specialized in Chatbot & RAG Development — I help businesses build intelligent assistants that can understand, search, and respond using their own data. With a solid foundation in SQL, cloud data engineering, and backend development, I now focus on creating LLM-powered systems using tools like OpenAI GPT-4, LangChain, and vector databases. From simple Q&A bots to voice-enabled assistants and document-based RAG pipelines — I build fast, reliable, and secure AI workflows. ✅ Core Specialties 📌 LLM-Powered Chatbots & Assistants 🔹 GPT-4 chatbot setup using OpenAI APIs 🔹 System prompts, function calling, JSON mode 🔹 Multi-turn conversation logic & session memory 🔹 LangChain / LangGraph for modular chatbot flows 🔹 Tool usage: calculator, search, DB query execution 📌 RAG (Retrieval-Augmented Generation) 🔹 Custom Q&A bots over PDFs, docs, websites, SQL DBs 🔹 Embedding content with OpenAI, HuggingFace, or Cohere 🔹 Vector DB setup: Supabase, Pinecone, FAISS, Weaviate 🔹 Chunking, metadata filtering, source attribution 🔹 Real-time search + response generation 📌 Moderation & Control 🔹 OpenAI Moderation API to filter harmful prompts 🔹 Message validation & logging 🔹 Content restrictions and persona enforcement 📌 Voice & Audio Bots (Optional) 🔹 Speech-to-text with Whisper (file or microphone input) 🔹 Text-to-speech (TTS) for reply audio output 🔹 CLI, web UI, or n8n workflow integration 📌 Cloud & Backend Integration 🔹 Python (FastAPI, requests, pandas) for backend logic 🔹 AWS S3, Lambda, Glue, IAM, Athena for cloud storage and ETL 🔹 Automation with n8n, GitHub Actions, Bash 🔹 JSON, CSV, Parquet input/output support 🔹 Dockerized deployments, Git version control 🚀 Experience & Strengths 🔹 10+ years in database and ERP systems (Oracle, PL/SQL) 🔹 Transitioned into AI development with hands-on RAG/chatbot projects 🔹 Strong backend engineering and data handling background 🔹 Cloud-ready and automation-focused mindset 🔹 Fast, responsive, and fluent in both business and technical logic 🔍 Keywords to find me: Chatbot Developer, RAG, GPT-4, LangChain, LangGraph, OpenAI, Whisper, Text-to-Speech, Moderation API, Vector Database, Pinecone, Supabase, FAISS, Q&A Bot, Document QA, PDF Chatbot, Data-Powered Chatbot, Function Calling, JSON Mode, Prompt Engineering, AI Assistant, Retrieval-Augmented Generation, FastAPI, Python, GitHub Actions, n8n, S3, Lambda, Custom Chatbot, ERP Integration, SQL Chatbot, Cloud Automation, Oracle, PLSQL, SQL, AWS, Athena, Redshift, Data Engineering, ETL, Glue, ERP, Data Warehouse, Data Pipelines, Git, Cloud Data, PostgreSQL, Docker, JSON, Metabase, Data Lake, SQL Tuning, Stored Procedures, Big Data, Data Modeling, QuickSight, Airflow, Jupyter