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💼 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.

When your backend is breaking under load, your microservices are drifting, or your APIs aren't talking to each other — I'm the engineer who fixes it without breaking everything else. I build and maintain production-grade systems using Java Spring Boot, React, Node.js, and cloud-native infrastructure. My work runs at scale: Microservices handling 20,000+ concurrent users (Spring Boot + Kafka + Kubernetes) REST APIs serving 50,000+ monthly users with clean contracts and error handling CI/CD pipelines on GitHub Actions and Jenkins with automated test gates AWS deployments (EC2, EKS, ECR, ALB) with zero-downtime rolling releases Elasticsearch integration cutting search response times from 800ms to under 200ms OAuth 2.0 + TLS security reducing vulnerability incidents by 70% What I help with: Java Spring Boot microservices — build, fix, optimize React frontend connected to backend APIs Kafka event-driven architecture Docker + Kubernetes deployments AWS cloud infrastructure CI/CD pipeline setup and maintenance API integration and debugging 100% Job Success · Rising Talent · 0-4hr response time If your system is slow, broken, or needs scaling — message me and I'll tell you exactly what's wrong.

I am a senior Web developer (Total- 21 Yrs.) in HTML, CSS, PHP, Web Design, Web Development, Javascript, React, Redux, Angular, e-commerce, Wordpress, Shopify, Java/J2ee, Python, Rest API, SOAP API, javascript, OAuth, SSO, Kafka, SpringBoot, JPA, Cloud, AWS, Azure, Private cloud, JBPM, n8n, Oracle BPM, JMS, Hibernate, Struts, Spring Batch, ESB, Base44, Playwright, Selenium, JavaFX, Lisp, Prolog, Weka , OpenAI, Different Web as well as Application Servers, different Operating Systems and DBMS Tools, SQL, NoSQL, PostgreSQL, Mongo, Cassandra, MYSQL, Oracle, Supabase, AI, NLP, OpenAI, agent development, Wordpress, php , CI/CD, Agile and various open-source tools, technologies and frameworks. Some of the domains I have worked on are Banking, finance, Trade, Crypto, HR, Insurance, Learning, NLP, Healthcare, System architecture, Developers Tooling, Document management, AI, DevOps, Cloud, GCP, Hubspot, Quickbook, PandaDoc, Stripe, etc. ********************************************************************* Experience Summary: Freelancing || Freelancing || Present Toyow || Solution Architect || Sep 24 to JAN 25 JPMorgan || Vice President || (Around 12 Yrs. Total) Deloitte || Senior Consultant/Specialist Senior || Jun 13 to Jun 15 HCL || Onsite/Offshore Dev lead || Sep 06 to May 10 Birla Soft Ltd || Software Engineer || Jan 06 to Sept 06 GIIT || Developer || Feb 05 to Oct 05 ************************************************************************* Some of the applications are as below: - Document generation system - Online translation system using NLP - Library management system - HRMS System - Networking system - Tools for Developer and Operate to build and deploy their applications. - Workflow as a service - Workflow Platform for Mutual Fund NAV processing (Fund accounting) - Prediction analysis for SLA miss. - A real time dashboard for fund processing - Messaging Platform supporting MQ, SFTP, REST, Kafka, FIX, - Trade instruction manager - Customer support system for Bank operators - Platform for Tokenization Assets using Blockchain - A social Media application - A insurance management Platform - Applications developed on Base44 - Loan record reports - OCR for healthcare reports and data processing. - ChatBot for Patient enquiry. - Coin analysis using AI (openAPI integration). - A Platform for affiliate marketing. - CI/CD for Gitlab and AWS.

Hi! I’m Rashu, an Expert Java Back-End Developer. Are you looking for a reliable, detail-oriented back-end developer who delivers high-quality, scalable, and secure solutions? With over 5+ years of hands-on experience in Java-based backend development, I specialize in building powerful server-side applications that drive performance and growth. 🔧 Technical Skills & Tools: 🖥 Backend Development - Java, Spring Boot, Hibernate, JUnit, RESTful APIs & Microservices Architecture ☁ Cloud & DevOps - AWS (EC2, S3, RDS) 💾 Databases & Version Control - SQL, MySQL, PostgreSQL Git, Bitbucket 🏥 Domain Experience: *Healthcare: Developed a complete Hospital Management ERP Software used for streamlining patient records, billing, pharmacy, and more. Banking: Worked on secure, transaction-heavy systems with robust authentication and compliance. *Voice Testing Applications: Built reliable and performance-oriented back-end components for voice-based testing platforms. ✅ Why Work With Me: *100% commitment to client satisfaction *Known for being detail-oriented, reliable, and deadline-driven *Clean, maintainable code with proper testing using JUnit *Strong communication skills and proactive problem-solving 📩 Let’s Get Started! Let’s build something great together. I’m here to bring your project to life with efficiency and precision. Send me a message and let’s talk about how I can help! **This is not a company or agency account. Only the profile name is of my firm's name but I am an Independent Freelancer and all the information is about me only.

I am Full Stack Java developer with 10+ years of experience building and integrating scalable healthcare solutions for the US market. I specialize in healthcare interoperability, connecting EHR/EMR systems using HL7 and FHIR, and designing secure, compliant data exchange architectures. I have delivered multiple healthcare integration projects involving real-time and bidirectional data exchange across systems like Epic, Cerner, Meditech, and eClinicalWorks. My work includes building interfaces using Mirth Connect, developing FHIR-based APIs, normalizing clinical data (LOINC, SNOMED, ICD), and enabling seamless interoperability across hospital systems and HIE platforms. In parallel, I design and implement AI-enabled healthcare solutions that improve clinical workflows and data usability. I have hands-on experience building AI features such as automated clinical note summarization, patient-friendly discharge summaries, and intelligent extraction of structured data from unstructured EHR notes using NLP techniques. I’ve also worked on integrating lightweight AI modules into existing applications to support decision-making, reduce manual effort, and enhance provider productivity. My AI work is focused on practical, production-ready implementations, including integrating LLM-based services via APIs, building backend pipelines for clinical data processing, and ensuring outputs are compliant with healthcare data standards and privacy requirements. I bring strong experience across the full development lifecycle, from architecture to deployment, with a focus on scalability, performance, and clean system design. Core Expertise:- -Full Stack Development: Java, J2EE, Spring Boot, Microservices -Healthcare Integration: HL7 (v2.x), FHIR APIs, EHR/EMR interoperability -Integration Engines: Mirth Connect, interface development, data mapping- AI in Healthcare:- -Clinical text summarization (SOAP notes, discharge summaries) -NLP-based entity extraction (medications, allergies, labs) -Patient data normalization and structuring -LLM/API integration for healthcare use cases -Workflow automation using AI -Cloud & APIs: RESTful services, scalable and secure architectures Healthcare Domain Experience:- -Strong understanding of US healthcare workflows including Medicare, Medicaid, and claims processing -Expertise in compliance standards: HIPAA, PPACA -Clinical coding & standards: LOINC, SNOMED, ICD-9/10 -HL7 message types: ADT, ORM, ORU, MDM, DFT -EHR/EMR Integrations Hands-on experience integrating with: -Epic, Cerner, Meditech, Allscripts, eClinicalWorks (eCW) -McKesson, Siemens, Amazing Charts -Orchard, Sorian, Opus and other hospital systems Cores skills:- -HL7 Integration -FHIR API Development -EHR Integration -EMR Integration -Mirth Connect -Healthcare Interoperability -Java -Spring Boot -Microservices Architecture -REST API Development -Epic Integration -Cerner Integration -Healthcare Data Standards (LOINC, SNOMED, ICD-10) -Healthcare NLP -AI in Healthcare -LLM Integration -HIPAA Compliance -Healthcare Data Exchange -Interface Development -Real-time Data Integration Delivered solutions including real-time data streaming, FHIR-based integrations, and embedded interoperability within clinical systems and devices.

I am a Java/J2EE Developer with 7+ years of experience in building scalable and secure web applications using object-oriented and client–server technologies. I specialize in backend development, REST APIs, and enterprise-grade solutions. 🚀Core Technologies Java, Core Java, Java Collections Framework, Spring Framework, Spring Boot, Spring MVC, Java Servlet API, Java Persistence API (JPA) 💻 Web & Application Development Web Application Development, Application Testing & Maintenance, RESTful API Development, Microservice-ready Architecture 🛠️ Low-Code Platforms Case360 – Car Damage Assessment Application Appworks (LowCodeGuide) – BSI Enterprise Application 📂 Tools & Development Practices Git, GitHub, Version Control, Agile Software Development, Jira 🏆 Projects & Achievements CRM Application using Spring Boot APIs ERP System for Construction Sites (Project-based Spring Boot solution) Car Damage Assessment Application (Case360) BSI Application (Appworks Low-Code Platform) Academic Project: Organization Management System for student data, assignments, and class records I focus on delivering clean, maintainable, and business-oriented solutions with strong attention to performance and scalability.