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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’m Bablu Kumar, a senior full-stack web developer with 7+ years of experience building scalable platforms, complex systems, and marketplace products that handle real users and real payments. I work with founders who need more than basic development — they need systems that are reliable, extensible, and built for real-world use. My core expertise includes React, Node.js, Ruby on Rails, Laravel, Stripe with advanced payment flows and webhooks, AWS S3, and AI integrations using ChatGPT and OpenAI APIs. I focus on clean architecture, strong coding standards, and maintainable systems so products can grow without constant rewrites or technical debt. I build MVPs that launch fast but are engineered for long-term scale. I’m also a verified Sharetribe expert, bringing deep marketplace experience when required — from payments and workflows to edge cases and platform limitations.

I am a Splunk Certified Architect. I have experience in capacity planning, deploying, configuring, and managing Splunk Env. And I have a proven record of providing 99.9% SLA of Splunk Env. And good at troubleshooting issues of Splunk Env, Universal Forwarders, etc. And as I am also a Splunk Certified Developer. I have good hands-on on creating complex Splunk dashboards using HTML, XML, Tokens, custom Javascript to make Splunk Dashboard more dynamic. And creating and optimization of Splunk Queries. Also, I have developed various Splunk Add-on and Apps and some of them are also published on SplunkBase. Apart from Splunk, I have a good understanding and grip on AWS and its various services, Jenkins, Git, Python, Shell Script, Automation, Ansible.

Hi, I’m Mehul, a Top-Rated-Plus AWS Expert and DevOps Engineer who helps startups and founders launch and scale reliable SaaS, healthcare, and fintech platforms on AWS. ✅ Top 1% Upwork Freelancer ✅ 125+ Projects Completed ✅ 7000+ Hours Worked ✅ Top-Rated Plus on Upwork ✅ AWS Certified Developer - Associate 🏆 🏆 I’ve designed systems serving 2M+ users, built HIPAA-compliant healthcare apps, and helped teams cut cloud bills by 30–40 % without compromising performance. My focus is simple: build it once, make it scale, and keep your costs under control. ✅ What I Do ➥ Architect secure, serverless AWS setups using Lambda, API Gateway, and DynamoDB ➥ Deploy AI Agent to AWS with Bedrock ➥ Automate deployments with Terraform, GitHub Actions, and CodePipeline ➥ Optimise infrastructure for speed, uptime, and cost 💡 Why Work With Me ➥ 7+ years in AWS DevOps ➥ $300 K+ earned on Upwork, 100 % Job Success Known for clear communication, quick delivery, and long-term reliability Let’s connect if you’re building a product and want an AWS setup that’s secure, scalable, and easy to manage so you can focus on growing your business while I handle the cloud. Experienced with Amazon EC2, S3, RDS, Aurora, DynamoDB, ElastiCache, CloudFront, API Gateway, Step Functions, EKS, Fargate, CodePipeline, CodeBuild, CloudWatch, Grafana, Prometheus, GuardDuty, Security Hub, AWS Organisations, SCPs, KMS, Secrets Manager, IAM, WAF, Route53, ACM, Amplify, SageMaker, Bedrock, OpenSearch, and CloudFormation. Python, Bash, TypeScript, Node.js, Docker, Kubernetes, GitHub Actions, GitLab CI, Jenkins, n8n, Zapier.

Overview: ✅ 10+ Completed Projects | 💰 $2K+ Earned ✅ Python Backend Developer | Django | FastAPI | Flask | Docker | AWS | Kubernetes I’m a Python Backend Developer with 4+ years of experience building scalable, secure, and production-ready backend systems for startups and businesses. I specialize in developing high-performance REST APIs using Django, FastAPI, and Flask, along with third-party API integrations, cloud deployment, containerization, and database optimization. I have hands-on experience working with complete backend development workflows — from API architecture and authentication systems to Dockerized deployment on AWS servers Core Skills & Technologies ✅ Python Development ✅ Django Development ✅ FastAPI Development ✅ Flask Development ✅ REST API Development ✅ Third-Party API Integration ✅ Authentication & Authorization ✅ PostgreSQL / pgAdmin ✅ SQLite & MySQL ✅ Git & GitHub Version Control ✅ Linux Server Management ✅ Docker Containerization ✅ Kubernetes Basics & Deployment ✅ AWS Deployment (EC2, S3, IAM) ✅ CI/CD Deployment Workflows What I Can Build • Secure REST APIs • Scalable Backend Architectures • Authentication Systems (JWT, OAuth) • Cloud-Ready Web Applications • Dockerized Python Applications • Database Design & Optimization • API Integrations & Automation Systems • Backend Deployment & Server Setup I focus on writing clean, maintainable, and scalable code with proper architecture and performance optimization. Whether you need a backend from scratch, API integration, bug fixing, deployment support, or long-term development assistance — I can help deliver reliable solutions. Let’s build your backend system professionally and efficiently.

Suhasi Here! working as a Full Stack, MERN developer over 5 years with expertise in MongoDB, Express and Node.js as well as React for MERN projects. With a strong background in developing custom MERN Stack websites, portals/ SaaS and custom web applications, I excel at building innovative, tailored, and scalable solutions. My experience includes delivering robust, feature-rich, and modular applications that meet specific client needs and provide a seamless user experience. I've developed several apps targeting different verticals like SaaS platform, Marketplace, Ecommerce, Travel, healthcare System, fintech, on-demand booking, Service provider, dating, social networking, social media and API-heavy Application using React, Next, Express.js, Node.js, MongoDB/PostgreSQL and Rest APIs. 🙋‍♂️ 𝐌𝐲 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬 𝐚𝐧𝐝 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: 👉 𝐌𝐲 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐒𝐤𝐢𝐥𝐥𝐬: 💎 Node.js - JavaScript runtime for backend 💎 Express.js - Web app framework for Node 💎 Nest.js - Framework for Node with TypeScript 💎 Next.js - Framework for universal React apps 💎 Supabase/Firebase. 💎 Python/Fast API. 👉 AI Tools 💎 Claude Code 💎 Cursor 💎 GitHub Copilot 💎 Lovable & Replit 💎 VS Code 👉 𝐌𝐲 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐒𝐤𝐢𝐥𝐥𝐬: 💎 React (18, 19)- Library for building UIs 💎 Lovable/Supabase 💎 TypeScript - Typed superset of JavaScript 👉 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: 💎 MongoDB - NoSQL database 💎 PostgreSQL - Object-relational SQL database 💎 MySQL - Object-relational SQL database 👉 𝐔𝐈 𝐋𝐢𝐛𝐫𝐚𝐫𝐢𝐞𝐬: 💎 Tailwind CSS - Utility-first CSS framework 💎 Material UI - React components library 💎 Ant Design - React components library 💎 Chakra UI - Modular React UI components 𝐒𝐭𝐚𝐭𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐀𝐮𝐭𝐡𝐞𝐧𝐭𝐢𝐜𝐚𝐭𝐢𝐨𝐧: 💎 Redux/Redux-Thunk - Centralized state management 💎 React Context API - Internal state management 💎 Auth0 - Authentication as a service 👉 𝐅𝐨𝐫𝐦𝐬 𝐚𝐧𝐝 𝐕𝐚𝐥𝐢𝐝𝐚𝐭𝐢𝐨𝐧: 💎 React Hook Form - Forms library 💎 Lovable 💎 Formik - Forms library 💎 Yup - Form validation 👉 𝐑𝐞𝐚𝐥-𝐭𝐢𝐦𝐞 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐌𝐞𝐬𝐬𝐚𝐠𝐢𝐧𝐠: 💎 GraphQL - Query language for APIs 💎 Socketio /Twilio- Realtime communication and Messaging 💎 MQTT - Lightweight messaging protocol 👉 𝐃𝐚𝐭𝐚 𝐆𝐫𝐢𝐝𝐬 𝐚𝐧𝐝 𝐕𝐢𝐬𝐮𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧: 💎 Ag-Grid - Data grid component 💎 Chartjs - Charting library 💎 ApexCharts - Charting library 👉 𝐃𝐚𝐭𝐚 𝐇𝐚𝐧𝐝𝐥𝐢𝐧𝐠 𝐚𝐧𝐝 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: 💎 TypeORM - ORM for SQL/NoSQL databases 💎 Redis - In-memory data store 👉 𝐃𝐞𝐬𝐢𝐠𝐧 𝐓𝐨𝐨𝐥𝐬: 💎 Figma - Prototyping tool 💎 Adobe XD - Prototyping tool 👉 𝐃𝐞𝐯𝐎𝐩𝐬 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 💎 Docker & Containerization 💎 AWS (EC2, S3, Lambda, Cognito, CloudWatch) 💎 Vercel, Netlify, Heroku, Railway, Render 💎 CI/CD Pipelines (GitHub Actions, GitLab CI/CD, Jenkins) 💎 NGINX & Apache Server Configuration 💎 Version Control with Git & GitHub/GitLab/Bitbucket 💎 Shell Scripting, SSH, FTP/SFTP Management 💎 Deployment Automation & Monitoring Tools. I follow Agile development methodology (Scrum) adhere to constant clear client communication to ensure transparency to stakeholders, easy adaptability to changing requirements, predictable delivery and costs and a high-quality final product. I’m focused on the success of the application and believe in long term relationships. Send an invite and let's build something scalable, Fast and worth your investment.