✨ Seasoned software professional with 20+ years of experience in end-to-end software development, including 8+ years specializing in Big Data technologies and cloud-based solutions. Proven expertise in building scalable, high-performance data platforms using Apache Spark, Hadoop, Hive, Cassandra, and programming in Scala, Python, Java and C++. ✨ I focus on designing robust, enterprise-grade Big Data and Data Engineering architectures on GCP, AWS, and Azure, both in on-prem and cloud environments. My role involves solution architecture, technical leadership, and hands-on development of critical components. ✨ I am passionate about leveraging my experience to build cutting-edge data and AI solutions. Open to senior technical roles, consulting opportunities, and innovative startup environments. 🔹 Keen eye on scalability, sustainability of the solution 🔹 Can come up with maintainable & good object-oriented designs quickly 🔹 Highly experienced in seamlessly working with remote teams effectively 🔹 Aptitude for recognizing business requirements and solving the root cause of the problem 🔹 Can quickly learn new technologies 🔹 Transparency, Dedication, Qualtity and Satisfaction Guaranteed Sound experience in following technology stacks: ✨ Big Data: Apache Spark, Spark Streaming, HDFS, Hadoop MR, Hive, Apache Kafka, Cassandra, Google Cloud Platform (Dataproc, Cloud storage, Cloud Function, Datastore/Firestore, Pub/Sub), Cloudera Hadoop 5.x ✨ Languages: Scala, Python, Java, C++, C, Scala with Akka and Play frameworks ✨ Build Tools: Sbt, Maven ✨ Databases: Postgres, Oracle, MongoDB/CosmosDB ✨ GCP Services: GCS, DataProc, Cloud functions, Pub/Sub, Data-store, BigQuery ✨ AWS Services: S3, VM, VM Auto-scaling Group, EMR, S3 Java APIs, Redshift, MongoDB ✨ Azure Services: Blob, VM, VM scale-set, Blob Java APIs, Synapse, CosmosDB ✨ Other Tools/Technologies: Kubernetes, Dockerization, Terraform Worked with different types of Input & Storage formats: CSV, XML, JSON file, Mongodb, Parquet, ORC

✅ Top Rated Plus | 100% JSS | 4x Certified (AWS SA Pro, GCP Pro Architect, Snowflake) | BITS Pilani MTech Data Science | Full Stack Developer & Data Engineer | React, Python, Node.js, Spark | $20K+ earned | 1,845+ hours I build full-stack web applications and data engineering systems that go to production, not to demo day. SaaS MVPs, Spark-based ETL pipelines, cloud architecture on AWS and GCP, I handle both the application layer and the data infrastructure behind it. 🔹 Full-Stack SaaS & Web Application Development React, Next.js, Node.js, and Python backends for SaaS platforms, dashboards, internal tools, and customer-facing apps. MVP to production on AWS/GCP with CI/CD, automated testing, and monitoring from day one. 19 Upwork contracts delivered with structured milestones. 🔹 Data Engineering & ETL Pipeline Architecture End-to-end data pipeline design with Apache Spark, PySpark, Scala, Snowflake, and Airflow. Batch and streaming ETL processing millions of records per run. Data lake architecture, warehouse modeling, analytics-ready output layers. 8+ years building production Spark + Cassandra systems at enterprise scale. 🔹 Cloud Architecture & Infrastructure (AWS + GCP) 4 cloud architecture projects on Upwork, all rated 5.0. $2,300 CloudStack design. AWS architecture advisory. EC2, Lambda, S3, RDS, EMR, Redshift on AWS. BigQuery, Dataflow, Cloud Functions on GCP. Terraform for IaC, Docker and Kubernetes for orchestration, zero-downtime deployments. 🔹 API Development & Backend Systems REST API and GraphQL backends with Node.js, NestJS, FastAPI, and Django. Microservices, Redis caching, WebSocket integrations, Stripe payment APIs, OAuth/JWT authentication. Backend services handling concurrent users at production scale. 🔹 Database Design & Data Modeling PostgreSQL, MongoDB, MySQL, Cassandra, DynamoDB, Redis. Schema design, query tuning, indexing, partitioning. Star and snowflake schemas, slowly changing dimensions, SQL optimization for analytics. Architecture decisions balancing performance, throughput, and cost. 🔹 AI Integration & Intelligent Applications OpenAI API, Hugging Face, NLP pipelines, chatbot systems, text extraction and summarization. Delivered NLP processing on Upwork. AI-powered features built into SaaS products as production features, not standalone experiments. 🔹 Real-Time Processing & Event-Driven Systems Kafka for event-driven architectures, change data capture, WebSocket dashboards, streaming pipelines for near-real-time analytics. Application events connected to data warehouse layers. 🔹 Frontend Performance & TypeScript Engineering React and Next.js with SSR/SSG for SEO-friendly rendering. TypeScript full stack. Core Web Vitals optimization, Tailwind CSS, responsive design. Fast-loading frontends that rank and convert. 🔹 DevOps, CI/CD & Production Systems Docker, Kubernetes, Terraform, GitHub Actions, GitLab CI. Serverless with AWS Lambda and GCP Cloud Functions. Monitoring, logging, alerting for production. Zero-downtime deployment strategies. 🔹 Technical Consulting & Architecture Advisory TypeScript and AWS Lambda tutor on Upwork, rated 5.0 over 13 hours. Cloud migration advisory, system design review, code audits, performance optimization, engineering mentorship. 📊 AWS Solutions Architect Professional + Associate (Dec 2026) | GCP Pro Cloud Architect (Jul 2026) | Snowflake Core (Jan 2026) 📊 MTech Data Science, BITS Pilani, ranked top 5 engineering institutions in India 📊 19 contracts, 100% JSS, Top Rated Plus, 1,845+ hours tracked, $20K+ earned 📊 "Jay's expertise brought the architecture design to life in ways I hadn't imagined" (5.0 rated) 📊 8+ years: React, Node.js, Python, Java, Scala across SaaS, healthcare, fintech, enterprise → Day 1: Requirements call + architecture proposal with tech stack rationale → Week 1: Sprint development, daily Loom/Slack updates, working code shipped → Ongoing: Weekly demos, priority reviews, transparent tracking, full documentation → Delivery: Documented code, CI/CD configured, deployment guide, 2-week post-launch support Full Stack: React, Next.js, Node.js, NestJS, Express, TypeScript, JavaScript, Python, FastAPI, Django Data: Apache Spark, PySpark, Scala, Snowflake, Airflow, Kafka, ETL, dbt, SQL, BigQuery Cloud: AWS (Lambda, EC2, S3, RDS, EMR, Redshift), GCP (BigQuery, Dataflow), Docker, Kubernetes, Terraform DB: PostgreSQL, MongoDB, MySQL, Redis, Cassandra, DynamoDB, Supabase AI: OpenAI API, Hugging Face, NLP, LLM Integration, TensorFlow, PyTorch 💬 Message me with your project scope or data challenge. I respond within 4 hours with a free assessment and can start within 48 hours.

𝗛𝗜𝗥𝗘 𝗙𝗢𝗥 𝗔 𝗪𝗘𝗘𝗞 𝗔𝗧 𝗙𝗥𝗘𝗘 𝗢𝗙 𝗖𝗢𝗦𝗧 𝗧𝗢 𝗧𝗘𝗦𝗧 𝗧𝗛𝗘 𝗦𝗞𝗜𝗟𝗟𝗦 𝗔𝗡𝗗 𝗖𝗢𝗠𝗣𝗔𝗧𝗜𝗕𝗜𝗟𝗜𝗧𝗬 𝗪𝗜𝗧𝗛 𝗧𝗘𝗔𝗠! This Offer Valid Only if YOU are Planning to HIRE for 3+ Months. I am an experienced Software Developer and Project Manager with strong core language knowledge and experience in developing and designing applications with high performance. Tools & Technologies: ✔ Core Java, Spring, Play Framework, Hibernate, JavaFX, Golang, Laravel, Lumen, Node, AngularJS, and MVC ✔ REST APIs integration ✔ MY SQL, Mongo DB, SQL Server, Oracle ✔ AWS EC2, AWS S3, AWS SES ✔ Work with Payment Gateways. ✔ Version Control Tools - Git / Github / SVN / BitBucket ✔ HTML, CSS, Bootstrap, SCSS, LESS etc. ✔ Adobe Photoshop, Illustrator, XD, Zeplin, Figma 💻 Build your web product with React.JS/Next.JS (frontend) and AWS Serverless (backend) 💻 Deploy final package to any cloud providers: Heroku, Digital Ocean, or AWS 💻 Conduct any of code review, structure and technical refactoring of existing codebase. 💻 Participate in optimizing and enhancing website speed, security and reliability. 💻 Configure and setup any of automated DevOps pipeline deployment. 🤷‍♂ ️Something else missing? Feel free to throw it up to me. Challenge accepted! 🌐 𝐑𝐄𝐀𝐂𝐓.𝐉𝐒 ✅ 𝐒𝐒𝐑: Next.js ✅ 𝐑𝐎𝐔𝐓𝐈𝐍𝐆 & 𝐒𝐓𝐀𝐓𝐄: react-router, react-redux, react-mobx ✅ 𝐔𝐈: coreui/react, material-ui, ant-design, reactstrap, ag-grid/react-table, react-chartjs-2/ recharts, react-spinkit, react-datepicker/material-ui-datepicker, pdfkit/jspdf ✅ 𝐍𝐄𝐓𝐖𝐎𝐑𝐊𝐈𝐍𝐆: axios, swr, fetch, react-toast/notistack ✅ 𝐈𝐌𝐀𝐆𝐄: react-image-lightbox, react-svg-pan-zoom, react-slick ✅ 𝐓𝐃𝐃: jest, enzyme, react-test-renderer ✅ 𝐂𝐌𝐒: strapi ☁ 𝐀𝐖𝐒 ✅ 𝐅𝐑𝐀𝐌𝐄𝐖𝐎𝐑𝐊: Serverless, AWS SAM ✅ 𝐋𝐀𝐍𝐆𝐔𝐀𝐆𝐄𝐒: Java, Python, Node.js ✅ 𝐀𝐖𝐒: Lambda, DynamoDB, RDS, API Gateway, Route53, Cognito, SES, S3, CloudFront 👀 Are you hunting for a result-oriented and cost-effective developer? 👀 Are you looking for a contributor as well as a problem solver? 👀 Are you searching for a contractor without working burdens? I’m glad to provide the best communication and help you kick the maximum out of your project with the most practical solutions. Send me the technical specs of your project and see if we are a good fit for each other. 🙋 Let’s bring your App to another level!🚀

I build the data infrastructure that makes LLMs actually work in production, RAG pipelines, vector search, and AI agents that don't hallucinate on your company's real data. Before AI, I spent 8 years as a Data Engineer building pipelines with [Python/SQL/Spark/Airflow/dbt, your actual stack]. That background is exactly why my AI systems don't fall apart at scale: I know how to move, clean, and structure data before an LLM ever touches it, which is where most "AI integrations" quietly fail. What I do: → Design and build RAG systems (retrieval-augmented generation) using Pinecone/Weaviate/pgvector/Chroma → Build production LLM pipelines with [LangChain/LlamaIndex/OpenAI API/Anthropic API] → Design embedding pipelines and vector databases that scale past prototype stage → Build AI agents and chatbots that connect to real business data, not toy demos → Handle the "boring" parts most AI freelancers skip: chunking strategy, latency, cost optimization, evaluation Recent results: ✅ "Cut RAG query latency by 60% on a 10M-vector index" ✅ "Built a support chatbot that reduced response time from 4 hrs to 90 seconds" ✅ "Migrated a client's AI prototype into a production pipeline handling 50K docs" I work best with: - Startups building their first AI product who need it to actually ship - Companies with an existing data stack who want to layer LLM capability on top - Teams whose "AI feature" broke in production and need someone who understands both data and models If your project involves LLMs touching real company data not just prompt-tweaking, let's talk. Send me your use case and current stack, and I'll tell you honestly whether RAG is even the right approach for it.

A working demo and a system that survives production are two very different things. I build the second kind. Over a decade of backend engineering and 70+ completed projects on Upwork. I run Datum Brain, a software and AI engineering company, so you get one senior engineer accountable end to end, with a team behind him when the work needs it. We ship Go microservices, data pipelines, and LLM systems for FinTech, SaaS, EdTech, and AdTech clients. Recent work: 🛡 Real-time ad fraud detection (TrueAudience) High-concurrency Go backend that scores ad traffic to catch bots before advertisers pay. 80M+ events, under 20ms decisions. Go, TimescaleDB, real-time pipelines. 🏦 Go microservices for an EMI and payments platform (Zolvat) Ledger logic, payment flows, and service orchestration for an installment payments platform. Go, microservices, PostgreSQL. 🎥 WebRTC proctoring infrastructure (Meazure / Examity) Real-time media and session orchestration for thousands of concurrent exam sessions at one of the largest US proctoring providers. Go, WebRTC, LiveKit, NATS. 📊 Big data pipeline optimization (Nike) Cut processing time and compute cost on large PySpark workloads. PySpark, AWS. 📄 Document intelligence platform (Centrum AI) OCR and RAG pipeline that turns unstructured documents into structured, queryable data with human review. Python, FastAPI, LangChain, RAG. What I work with: Backend: Go, Python, FastAPI, gRPC, REST, PostgreSQL, TimescaleDB, Redis, NATS, Kafka Data: PySpark, ETL pipelines, data quality frameworks, AWS, GCP Real-time: WebRTC, LiveKit, event streaming, high-concurrency systems AI and LLM: LangChain, LangGraph, RAG, multi-agent systems, OpenAI, Claude, evals Infra: Docker, Kubernetes, CI/CD, nginx How I work: I scope before I quote, so you know what you are getting and when. I flag risks early instead of at the deadline. Production-ready means tested, documented, monitored, and handed over properly. Good fit if you need something that runs in production and not a proof of concept, you want one senior engineer accountable end to end, and you value clear communication and honest scoping. Not a fit if you are shopping purely on hourly rate, or the spec changes daily and nobody owns decisions. If your backend needs to handle real load, or your data or AI work needs to go from demo to product, send me a message.

Top Rated Plus Full-Stack Developer | Top 3% on Upwork Mobile Apps (iOS & Android) · Flutter · React Native · AI Apps · SaaS · Custom Software · Web Apps 100% Client Satisfaction - Delivered, every time. With over 15 years of freelancing experience delivering real, measurable solutions, I built more than a career; I built IT Infonity, an in-house team of dedicated experts united by a shared commitment to creative thinking, high-quality design, & development that tells your story & strengthens your bottom line. Having successfully delivered 200+ mobile apps, AI-powered applications, & web solutions for startups, SMBs, & enterprises worldwide, we specialize in turning bold ideas into scalable, intelligent digital products. From AI-driven mobile and web platforms powered by OpenAI, Claude & LangChain to cross-platform apps built with Flutter, React Native, & Swift backed by a full modern stack every solution we deliver is architected for performance, built for scale, and tailored to reflect exactly who you are and where you're going. A key testament to the quality & adoption of my work is that the applications and products I have developed have collectively achieved 2M+ downloads, demonstrating strong user engagement, reliability, and market success. Whether you need a complete product build, team augmentation, platform modernization, or a scalable MVP, I bring the technical expertise, strategic thinking, & execution capability required to deliver results that drive business growth. ⭐ 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 ◉ Full project ownership — From your first idea through launch every stage, fully managed. ◉ Clean, production-ready code — Scalable architecture built to grow with your product. ◉ Transparent communication — Clear updates and fast response times you're never in the dark. ◉ Rigorous QA & testing — Thorough quality assurance before anything ships. ◉ Post-launch support & maintenance — Reliable free support after go-live. ◉ Secure, compliance-ready development — Built to meet GDPR, HIPAA, and age-restricted system requirements from day one. ⭐ 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤𝐬 ◉ Cross-Platform App Development: React Native | Flutter ◉ Native App Development: Swift | Kotlin | Java ◉ Frontend Development: React.js | Next.js | Angular | JavaScript | TypeScript | HTML5/CSS3 | Tailwind CSS | Bootstrap ◉ Backend Development: Node.js | Python | FastAPI | Django | Nest.js ◉ Databases: MongoDB | PostgreSQL | MySQL | Firebase | Supabase ◉ CMS & E-Commerce: WordPress | WooCommerce ◉ API Integrations: REST APIs | GraphQL | Google/Apple Maps | Twilio, Plivo, Elevenlabs, VAPI | Stripe, PayPal & Razorpay | Firebase | Fedex & UPS | Social Media & Auth APIs ◉ AI & Automation: OpenAI API | LangChain | AI Agents | Workflow Automation | RAG (Retrieval-Augmented Generation) | Vector Databases ◉ Cloud & DevOps: AWS | Docker | CI/CD | Vercel etc. ⭐ 𝐓𝐫𝐮𝐬𝐭𝐞𝐝 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐏𝐚𝐫𝐭𝐧𝐞𝐫 𝐀𝐜𝐫𝐨𝐬𝐬 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 ◉ Healthcare with HIPAA compliance ◉ Fitness & Wellness App ◉ FinTech Apps (TaxDome, Cash App, Venmo, Paypal, Stripe like App) - IRS Compliance ◉ Grubhub like App ◉ Restaurant App/DoorDash clone ◉ Uber like Apps ◉ Event Planning & Booking (Eventbrite like app) ◉ Bakery, Cafe & Restaurant Management ◉ Messaging & Communication Apps (WhatsApp Clone) ◉ Social Networking & Community Apps similar to Facebook & YouTube ◉ Dating Apps (Tinder like app) ◉ Real Estate & Property Management ◉ Salon Booking & Beauty Service ◉ E-Commerce Marketplace ◉ Education App ◉ Travel & Hospitality ◉ Logistics & Delivery Management ◉ Job Portals ◉ Sports & Entertainment Apps Partner With Me For: Mobile App Development | AI Mobile App Development | AI App Development | iOS App Development | Android App Development | iPad/iPhone App Development | Web App Development | Custom App Development | Cross-Platform App Development | Hybrid App Development | MVP Development | SaaS App Development | Flutter | React Native | Node.js | Python | PHP | Angular | MEAN Stack | WordPress | Firebase | AI/ML Development | Agentic AI Development | AI Agent Development | OpenAI/GPT Integration | Claude AI Integration | Llama Development | AI-Enabled Platforms | Automation | Healthcare App Development | Fintech App Development | EdTech App Development | eCommerce App Development | Real Estate App Development | Fitness App Development | Logistics App Development | Social Media App Development | Fantasy App Development | Dating App Development | API Development & Integration | Application Tracking System | Marketplace App Development | Supabase | Next.js | NestJS | On-demand App Development | Vue.js | Django | Flask | Laravel | Express.js | TypeScript | MongoDB | PostgreSQL | MySQL | LLM Integration | RAG System Development | LangChain | LlamaIndex | AI Chatbot Development | AI Voice Agent | AutoGen | OpenAI API Integration | Gemini API Integration | AI-Powered SaaS | Vercel | Google Cloud Platform | REST API | Agentic Workflow | PWA | CMS

Senior Data Engineer and AI Engineer with 15+ years in data engineering, AI engineering, and cloud data platforms. I build production data pipelines, ETL workflows, LLM and RAG systems, and machine learning infrastructure on AWS, GCP, Azure, Snowflake, Databricks, and Apache Spark. Most of my data engineering work is end to end. I take a messy data problem, or an AI feature that "almost works," and turn it into something reliable that runs in production without someone babysitting it. After 15+ years as a data engineer, you learn the hard part is rarely the model or the framework. It's the data, the edge cases, the pipelines, and keeping the system maintainable once you've handed it over. As an AI engineer I treat LLM and RAG work the same way: take a prototype that almost holds together and make it a production AI system that survives real traffic, real users, and real data. Recent data engineering and AI engineering projects: - An AI inbound phone system built on Twilio with OpenAI Whisper and GPT-4, handling real-time voice intake and call routing. - Enterprise Power BI data models for healthcare and financial reporting, around 30 tables and 40+ DAX measures, including IFRS 9 staging, RAROC, and NIM trends. - HL7 FHIR R4 integrations with Epic, Cerner, and Athenahealth for a clinical AI platform. - Cut LLM inference cost on a high-volume voice product by 25% by reworking how it used the OpenAI Realtime API and its per-turn token replay. Data engineering: Apache Spark, PySpark, dbt, Apache Airflow, ETL and ELT pipelines, data warehousing, data modeling, Snowflake, BigQuery, Redshift, Databricks, Delta Lake, Kafka, Kinesis, Fivetran. AI engineering and machine learning: OpenAI GPT-4o, Claude, Gemini, LangChain, LlamaIndex, RAG pipelines, AI agents, prompt engineering, vector search (Pinecone, Weaviate, pgvector), PyTorch, TensorFlow, scikit-learn, MLflow, model deployment. Cloud and DevOps: AWS (Glue, EMR, Lambda, Redshift, SageMaker, Athena), GCP (BigQuery, Dataflow, Vertex AI), Azure (Synapse, Data Factory, Azure ML), Terraform, Docker, Kubernetes, GitHub Actions. Automation and integration: n8n, Make, Power Automate, REST and GraphQL APIs. Governance and compliance: GDPR, HIPAA, SOC 2, RBAC, PII masking, encryption, data lineage. Languages: Python, SQL, Scala, PySpark, FastAPI, Flask. How I work: I'd rather ask the right questions up front than build the wrong thing quickly. I'll tell you when something is a bad idea, give you timelines I can keep, and leave you with code and documentation your own team can maintain. I've delivered data engineering and AI engineering projects for startups and enterprises across the US, Europe, and Asia. If you're looking to hire a data engineer or AI engineer who can own the work end to end, from raw data pipeline to production AI system, I'm available now. Tell me what you're building and I'll give you a straight answer on how I'd approach it.

My experience spans Full-Stack development, Solution Architect & Generative AI applications development. From integrating AI APIs to creating custom workflows, AI Chat Bot, real-time AI apps, multi-agents, and Auto AI suggestions. 𝗠𝘆 𝗖𝗢𝗥𝗘 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘 Web Development - Responsive Web Applications and SAAS Products (complete lifecycle). - Frontend Development: Next.js, React.js, TypeScript, Angular.JS, Vue.js. - MEAN & MERN Stack for full-stack solutions - Python, AI, ML - CMS:- Shopify, WordPress, and Magento Custom API Development & Integration - Expertise in OpenAI, Whisper, GPT-3, and chatbot platforms like WhatsApp and Telegram Bot. - Building and integrating APIs for communication. AI & Machine Learning - Generative AI: Stable Diffusion, Control Net, MidJourney, Hugging Face Bloom, etc. - Machine Learning & Deep Learning: Solutions for predictive analytics and AI-powered automation. Web Scraping & Automation - Tools: BeautifulSoup, Scrapy, Selenium, Pandas, asyncio, aiohttp. - Workflow automation for repetitive tasks. Browser Extensions - Development for Chrome, Firefox, Safari, and Edge. - Custom solutions to enhance browser functionality. Computer Vision - Image/Object Recognition, Facial Recognition, Text Recognition. - Tools: OpenCV, Tesseract OCR, Paddle OCR. LLM Optimisation - Crafting effective prompts to optimize AI model performance. Deployment & Hosting - Deployment on servers and cloud platforms for scalable applications. 𝗠𝗬 𝗦𝗞𝗜𝗟𝗟𝗦 & 𝗧𝗘𝗖𝗛: - Frontend Development: React.js, Redux, Next.js, Vue.js, AngularJS - Backend Development: Node.js, Express.js, GraphQL, Python, PHP - Web Development: HTML5, CSS3, jQuery, TailwindCSS AJAX, REST APIs - Python Development: Django, Flask, Web scraping - CMS: WordPress, Magento, Shopify - Media Processing: OpenCV, TensorFlow.js, FaceAPI.js, OCR - Databases: MySQL, PostgreSQL, MS SQL Server, MongoDB, Firebase, Supabase - Cloud & Hosting: AWS, Google Cloud, Microsoft Azure - AI Tools: OpenAI 𝗪𝗛𝗬 𝗖𝗛𝗢𝗢𝗦𝗘 𝗠𝗘? - Top-Rated Plus Engineer - Proven Results: 8K+ hours delivered with 100% job success - Certified Expertise: Top Python and Django Web Development Bundle! - Flexible & Committed: Available 40+ hours/week across time zones (EST, PST, MST, CST) for smooth collaboration. - Long-Term Contract Focus on Upwork -- Let’s Build Something Exceptional Ready to bring your project to life with a dependable, results-driven expert? Let’s connect to discuss your vision and how I can help you achieve it. Thanks & Regards, Praveen K. 𝗕𝘂𝘇𝘇𝘄𝗼𝗿𝗱𝘀: #FullStack #MERN #MEAN #React.js #Vue.js #Angular #Node.js #Express.js #Next.js #Nuxt.js #RESTfulAPIs #API #GraphQL #MongoDB #MySQL #PostgreSQL #Firebase #Docker #Kubernetes #AWS #Azure #GCP #CI/CD #AgileMethodologies #TDD #BDD #DevOps #Microservices #ResponsiveDesign #UIUX #WebApplications #Web #ProgressiveWebApps #SinglePageApplications #ServerlessArchitecture #CloudComputing #VersionControl #Git #FrontendDevelopment #BackendDevelopment #APIIntegration #SecurityBestPractices #PerformanceOptimization #Scalability #CrossPlatformDevelopment #MobileAppBackend #HTML #CSS #JavaScript #TypeScript #SASS #LESS #Bootstrap #TailwindCSS #Webpack #Babel #SEOOptimization #UserAuthentication #Authorization #WebSockets #RealTimeApplications #TestAutomation #Unit Testing #IntegrationTesting #CodeReview #ContinuousIntegration #ContinuousDeployment #TechnicalDocumentation #SoftwareArchitecture #SystemDesign #ProjectManagement #CollaborationTools #Jira #Trello #Asana #Slack #Python #Django #Flask #Ruby #PHP #Laravel #Symfony #Java #SpringBoot #Go #Golang #Rust #Elixir #Scala #Perl #Haskell #R #MATLAB #Julia #TensorFlow #PyTorch #OpenCV #Xamarin #Apache #Nginx #Redis #Elasticsearch #RabbitMQ #Kafka #Jenkins #CircleCI #TravisCI

🎁 100% satisfaction guarantee - Delivered on time, on budget, or money back! Transform your business with enterprise-grade digital solutions that scale across web and mobile platforms. With 100+ successful implementations, I've mastered building comprehensive digital ecosystems that drive growth. From sophisticated SaaS platforms to cross-platform mobile apps, I deliver solutions that exceed expectations. You'll get maximum value from our partnership if: ● You need an enterprise solution with both web and mobile presence ● Your existing systems need modernization or mobile expansion ● You're dealing with complex integrations across platforms ● You want to migrate legacy systems to modern architecture ● You need pixel-perfect mobile apps that match your brand exactly ● You require real-time features and complex integrations ● Your current solution can't handle business growth Working with me means you'll receive: 👉 Enterprise-grade solutions across web and mobile platforms 👉 Native-like mobile performance with cross-platform efficiency 👉 Optimized system architecture and efficient integrations 👉 Clean, documented code following industry best practices 👉 Seamless deployments with zero downtime 👉 Daily updates and responsive communication 👉 Strategic technical consultation beyond coding Technical Arsenal: ✅ Mobile Development: React Native, Flutter Native iOS & Android capabilities Real-time features (WebRTC, Socket.io) Payment integrations (Stripe, PayPal) Health & Fitness (HealthKit, Google Fit) ✅ Full Stack Development: Backend: Ruby on Rails, Node.js, Laravel, Python Frontend: React, Next.js, Vue.js Data: PostgreSQL, MongoDB, GraphQL Cloud: AWS, Docker, Kubernetes AI & Automation: Custom AI Solutions Modern Software Architecture: I specialize in designing and implementing modern architectural patterns tailored to your specific needs: 🏗️ Microservices Architecture 🏗️ Mono-repository Architecture 🏗️ Monolithic Architecture Specialized Solutions: ⚡️ Enterprise Mobile Applications ⚡️ Custom SaaS Platforms & MVPs ⚡️ Healthcare Information Systems ⚡️ Enterprise Resource Planning (ERP) ⚡️ Social Media & Community Platforms ⚡️ E-commerce & Marketplace Systems ⚡️ Fintech & Payment Solutions ⚡️ AI-Powered Business Tools ⚡️ Real-time Communication Platforms Recent Achievements: ● Launched a SaaS platform serving 10K+ daily active users ● Developed a mobile-first CRM handling 100K+ daily transactions ● Implemented a cross-platform healthcare solution ● Built an education platform with 70% improved performance ● Delivered a fitness tracking app with wearable integrations We might not be a good fit if: ❌ You need immediate delivery without proper planning ❌ You're looking for the lowest price rather than quality ❌ You can't maintain clear communication My development philosophy centers on creating comprehensive solutions that seamlessly integrate web and mobile experiences while being architected for scale. Every project begins with enterprise best practices, security considerations, and performance optimization. Ready to transform your business with scalable digital solutions? Let's discuss your requirements and create something exceptional.

💼 16+ Years of Experience 🧠 10+ Years as Architect 📚 Author: Java Hibernate Cookbook 🇺🇸 USA B1/B2 Visa Holder 📞 Voice AI & Calling Agent | 🤖 AI/ML | ⚛️ React | ☕ Java | 🚀 Node.js | 13+ Years | SaaS & Enterprise Systems I’m a seasoned Full-Stack Developer with over 16 years of experience building high-performance, scalable applications for startups and enterprises alike. My focus is on delivering quality SaaS-based and multi-tenant solutions tailored to client needs. I’ve worked across diverse industries including Banking & Financial Services, Healthcare, Transportation, Hospitality, HR, and IT. Whether leading offshore teams or managing projects solo, I bring strong technical leadership, clear communication, and business acumen to every engagement. 💼 Core Skills & Technologies Back-End Development: ○ Java, J2EE, Node.js, TypeScript ○ Spring Boot, Hibernate, Spring MVC, JDBC, JSP, Servlets, Backbase ○ Express.js, NestJS, Jest, Multer, Graphile Scheduler Front-End Development: ○ React, Angular (2+ to latest), Angular Material ○ HTML5, CSS3, SASS, SCSS ○ JavaScript, TypeScript, JSON Databases: ○ SQL: Oracle, MySQL, PostgreSQL, SQL Server, MariaDB ○ NoSQL: MongoDB, CouchDB, Couchbase, Firebase, DynamoDB, Apache Lucene Cloud Platforms: ○ Amazon Web Services (AWS), Google Cloud Platform, Microsoft Azure DevOps & Tools: ○ Shell Scripting, Jenkins, Kubernetes ○ Payment Integration: Stripe, PayPal ○ Industry Platforms: Backbase, EBICS 🧩 What I Bring to the Table ◎ Deep business understanding through real-world experience ◎ Proven success in enterprise-grade architecture & clean code delivery ◎ Strong communication, transparency, and professional integrity Let’s build something powerful together. I’m ready to support your project with skill, strategy, and sincerity.