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What I do: ------------ ● Architect AI solutions that are highly scalable and secure. Design and deploy secure RAG architectures using OpenSearch and PG VectorDB. ● Conduct comprehensive security audits of AWS cloud infrastructure and AI workloads to ensure compliance and data privacy. ● Build advanced multi-agent workflows and orchestration frameworks (LangGraph, LangChain) integrated cleanly into cloud-native backends. Education: ------------ ● Master’s in Electrical Engineering — IIT Kanpur, India. Certifications: ----------------- 1. AWS Certified Security – Specialty 2. AWS Certified Solutions Architect – Associate About me: ------------ ● 25+ years of IT experience (including 10 years in the USA) specializing in AI systems, cloud architecture, and secure enterprise software development. ● Proven AI & Cloud Solutions Architect skilled in designing scalable, high-performance applications with a rigorous security-first mindset. ● Deep hands-on engineering expertise in Python, Java, Spring Boot, and the AWS SDK to build, integrate, and secure robust software solutions. Skills: ------- ● AI/ML: LangGraph, LangChain, Agentic Workflows, RAG, OpenSearch, PG VectorDB ● Languages & Backend: Java, Python, Spring Boot, Microservices ● Cloud & Security: AWS, Cloud-Native Architecture, Infrastructure Security Audits Regulations: -------------- HIPAA and GDPR. Experiece in US healthcare domain. Drop me a message to discuss how I can help you!!

Senior Full-Stack Java | Spring Boot | AWS | React | AI Integration | Security Hello! I'm Deepak Kumar, a Senior Software Engineer and Full-Stack Developer with 8+ years of professional experience building scalable backend systems, cloud-native applications, APIs, and modern web applications. I specialize in Java, Spring Boot, Spring Security, React, AWS, microservices, and cloud-native development, with a strong focus on building secure, reliable, high-performance applications. After several years away from Upwork, I'm now actively returning to the platform and focusing on helping businesses build and modernize their software using modern Java/Spring technologies, cloud platforms, AI integrations, and secure full-stack architectures. 🚀 What I Can Help You Build Enterprise Java & Spring Boot applications RESTful APIs and microservices Secure applications with Spring Security OAuth 2.0, OpenID Connect, JWT and SSO React-based web applications and dashboards AWS cloud-native applications Docker & Kubernetes deployments CI/CD pipelines and DevOps automation AI/LLM integrations into existing applications AI-powered features, APIs and automation Database design and optimization High-performance and highly scalable systems Legacy application modernization Third-party API integrations Real-time applications using WebSockets Event-driven architectures with Kafka, Kinesis, RabbitMQ, etc. 💻 Core Technology Stack Backend Java 8/11+ Spring Boot Spring Framework Spring Data Spring Security Hibernate / JPA REST APIs Microservices WebSockets SOAP / Web Services Frontend React JavaScript HTML5 / CSS3 Bootstrap Thymeleaf Security Spring Security OAuth 2.0 OpenID Connect JWT SSO LDAP / CAS Role-based access control API security Cloud & DevOps AWS Google Cloud Platform (GCP) Docker Kubernetes ECS Lambda API Gateway CloudFront Route 53 SQS / SNS DynamoDB S3 Athena Redshift Aurora CI/CD Jenkins Bamboo CircleCI SonarQube Databases PostgreSQL Oracle MySQL MongoDB Cassandra Redis DynamoDB Redshift Athena / S3 Messaging & Streaming Apache Kafka AWS Kinesis RabbitMQ Apache Camel Event-driven architectures 🤖 AI & Modern Application Development I'm particularly interested in helping companies bring AI capabilities into existing Java/Spring applications rather than rebuilding everything from scratch. Examples include: Integrating LLM/AI APIs with Spring Boot AI-powered REST APIs Intelligent search and document processing AI assistants and chat functionality RAG-based application architectures Connecting AI services with existing enterprise systems AI workflow automation Secure AI integrations Building React interfaces for AI-powered applications ⚡ Performance & Reliability I also have experience analyzing and improving application performance using tools such as: JMeter JProfiler AWS X-Ray Gatling GTMetrix I focus on identifying bottlenecks across the application, database, API, infrastructure, and cloud layers rather than treating performance problems at only the code level. ⭐ Why Work With Me? Quality First: I focus on writing maintainable, production-ready code rather than simply making something work. Problem Solving: I enjoy debugging complex problems, understanding the root cause, and designing practical solutions. Clear Communication: I believe good communication is just as important as good code. I keep clients informed about progress, challenges, and technical decisions. Security Mindset: Security is considered from the architecture and API design stage, not added as an afterthought. Cloud & Scalability: I can work across application and infrastructure layers, from Spring Boot services all the way to AWS deployment and scaling. Business-Focused: My goal isn't just to deliver code. It's to understand what you're trying to achieve and build a solution that provides real business value. 🔧 Looking for help with Java, Spring Boot, AWS, React or AI? Whether you're building a new application, modernizing a legacy Java system, securing APIs, migrating to the cloud, improving performance, or adding AI capabilities to an existing product, I'd be happy to discuss your requirements. Let's build something reliable, secure, scalable, and future-ready.

GEN AI Consultant specializing in state-of-the-art models, data pipelines, and generative AI applications, including agentic systems like chatbots, voice bots, and RAG solutions. I have delivered AI-driven solutions for healthcare, e-commerce platforms, and network optimization, tailored to meet industry needs.

💼 AWS Certified Solutions Architect - Professional | 💼 AWS Certified Developer - Associate 🏆 Top-Rated | 🚀 Elevate Your Infrastructure | 🤖 AI & Chatbot Expert | 🔥 Expert in Java, Python, NodeJS | 🛡️ 24/7 Monitoring As an experianced professional, I specialize in developing custom AI-powered chatbots for healthcare and veterinary clients, utilizing OpenAI and Retrieval-Augmented Generation (RAG) systems. I possess AWS Certified Solution Architect Professional and Developer Associate Certifications and boast over 15 years of experience in the IT industry. As an experienced professional, I have the capability to design, develop, and deliver solutions that cater to your specific business requirements. 🧠 Recent Highlight: Veterinary AI Chatbot (Real Client Implementation) I recently built and deployed a custom AI-powered veterinary chatbot as a clinical copilot for a veterinary clinic. It provides evidence-based recommendations for canine care, including diagnostics, allergies, medications, and environmental management—powered by OpenAI and a custom Retrieval-Augmented Generation (RAG) pipeline. ✅ Fully implemented for a client 🎯 Easily customizable for feline care, telemedicine, or other domains 🔗 Built on scalable architecture using Python, LangChain, OpenAI, React, SSE and AWS If you're looking for an AI-driven assistant or knowledge engine—whether for healthcare, pets, customer support, or internal operations—I can design and deploy it with a strong foundation on cloud best practices. Throughout my career, I have honed my skills in various areas. Specifically, I excel in serverless development utilizing Python, Node.js, Java, and Lambda functions. Additionally, I am adept at establishing resilient and scalable infrastructure on the Amazon Web Services (AWS) platform. Here is a list of skills and tasks that fall within my expertise: 🚀 Core Expertise: ✔️ AI/ML-Powered Applications • Conversational AI using OpenAI / Azure OpenAI (GPT) • RAG systems with LangChain or custom pipelines • Integration with real-time data and knowledge bases • Custom chatbots for clinical, enterprise, and pet care use cases ✔️ Serverless Development • Python, Node.js, Java with AWS Lambda, API Gateway • Efficient, scalable, and event-driven systems ✔️ AWS Infrastructure & DevOps • EC2, RDS, Aurora, DynamoDB, S3, CloudFormation, Terraform • CI/CD pipelines using AWS CodePipeline, CodeBuild, GitHub Actions • CloudWatch for observability, alerts, and log insights • IAM best practices for security and governance ✔️ Microservices Architectures • Modular, container-based design using ECS, EKS, and Fargate • Event-driven design with SNS, SQS, EventBridge ✔️ Database & Security Management • RDS, DynamoDB, Aurora for transactional and NoSQL needs • Identity, permissions, and resource policies with IAM 🔧 Tech Stack Highlights: AWS | Python | Node.js | Java | OpenAI / Azure OpenAI | LangChain | Terraform | CloudFormation | Streamlit | React | DynamoDB | SAM | CI/CD Why partner with me? 🏅 Top-Rated on Upwork 🧠 Deep experience in AI + Cloud solutions 🌐 Real-world client implementations 📈 Scalable, secure, and cost-effective delivery 💬 Clear communication, quick iterations, and collaborative problem solving 📽️ Demo videos and project walk-throughs available on request. 📩 Let’s discuss how we can bring AI and cloud automation into your business workflows! Ready to create something intelligent and scalable? Let’s connect! 🚀