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I build AI-powered SaaS products, MVPs, and custom web applications for startups and businesses. 7+ years of experience with React, Next.js, Node.js, Python, PostgreSQL, and AI integrations. 200+ project successfully completed. AI SaaS Developer | Full-Stack Engineer specializing in AI Agents, OpenAI, Claude, RAG, React, Next.js, Node.js, Python, and Startup MVPs. I help founders launch scalable AI-powered products, SaaS platforms, and mobile apps from idea to production. I help startups and SaaS companies ship AI-powered mobile apps and full-stack MVPs, fast, clean, and production-ready. 3 apps launched with 5★ ratings and 50K+ combined downloads; now bringing the same execution standard to AI integration, LLM-powered products, and SaaS platforms. ━━━━━━━━━━━━━━━━━━━━━━ AI & Automation Services : - AI chatbot & agent development (LangChain, OpenAI API, RAG pipelines) - LLM integration into existing SaaS and web apps - AI workflow automation with n8n and Python - Custom GPT tools, voice AI, and document AI - Multi-agent systems (CrewAI, AutoGen) ━━━━━━━━━━━━━━━━━━━━━━ Mobile App Development : - React Native (iOS + Android) — single codebase, 40% cost saving - MVP to App Store launch in 4–6 weeks - FinTech budgeting app: 15K downloads, 4.9★ rating - Health tracking app: React Native + Node.js backend - E-commerce app: Stripe + Shopify API integration - App Store & Play Store publishing included ━━━━━━━━━━━━━━━━━━━━━━ Full-Stack & SaaS MVP : - React, Next.js, Node.js, Laravel, Python (FastAPI/Flask) - SaaS architecture, subscription billing, multi-tenancy - REST & GraphQL APIs, Firebase, PostgreSQL, MongoDB - AWS, Docker, scalable backend deployment ━━━━━━━━━━━━━━━━━━━━━━ Best fit for: → Startup founders building an AI-powered product or mobile MVP → SaaS companies adding AI features or a mobile companion app → Businesses automating workflows with AI agents and LLMs → Teams needing a senior dev who owns the full product cycle UK-based. Available for long-term contracts and dedicated engagements. Let's build something worth shipping. Invite me to your project. Thanks, Sarpreet Tags : AI Integration | AI Chatbot Development | OpenAI API Integration | LangChain Developer | RAG Pipeline Development | LLM Engineer | AI Agent Developer | Generative AI Developer | AI Workflow Automation | n8n Automation | AI SaaS Development | Autonomous AI Agent | Custom GPT Development | AI Automation Expert | Voice AI Agent | Multi-Agent Systems | Full Stack Developer | React Native Developer | Mobile App Developer | SaaS MVP Developer | MVP Development Next.js Developer | Node.js Developer | Python Developer | FastAPI Developer | REST API Development | TypeScript Developer | iOS Android Developer | SaaS Backend Developer | API Integration Expert | React Developer | Shopify API Developer | GraphQL Developer | MongoDB Developer | Laravel PHP Developer | Expo React Native | Push Notifications | Frontend Developer | Backend Developer | NLP Engineer | AI Copilot Development Document AI | Agent | SaaS, PHP, React, Node.js, Claude, ChatGPT API, MERN Stack, React, Next.js, Node.js, NestJS, ExpressJS, React Native, TypeScript, JavaScript, MongoDB, MySQL, PostgreSQL, Supabase, OpenAI API, AI Development, Node.js, RESTful API, ChatGPT API, DALL-E API, OpenAI API, GPT-4 API, AI Model Integration, Java, JavaScript #AIDeveloper #AISaaS #GenerativeAI #OpenAI #ClaudeAI #AIAgents #RAG #LangChain #LLM #AIAutomation #MCP #PythonDeveloper #FastAPI #NextJS #ReactJS #NodeJS #ReactNative #MobileAppDevelopment #SaaSDevelopment #MVPDevelopment #FullStackDeveloper #APIIntegration #AWS #StartupDevelopment #SoftwareEngineer #fullstack

Expert in Full Stack Development and Cybersecruity Transform Your Vision into Scalable, High-Performance Secure Applications Looking to build a cutting-edge web or mobile application? I specialize in MERN Stack Development, AI Integration, and Mobile App Solutions that deliver measurable business results. 𝗣𝗿𝗼𝘃𝗲𝗻 𝗦𝘂𝗰𝗰𝗲𝘀𝘀: - Scaled a web application from 1,000 to over 30,000 active users. - Designed subscription systems that handled millions of transactions. - Delivered AI-driven platforms that enhanced automation and business intelligence. 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗗𝗼 𝗳𝗼𝗿 𝗬𝗼𝘂: - Build robust web applications that scale effortlessly, supporting growth from hundreds to thousands of users. - Develop AI-powered tools to streamline operations and improve efficiency. - Create mobile apps for iOS and Android with seamless functionality and user-friendly designs. - Architect SaaS platforms that process millions of transactions smoothly. Technical Expertise: ➡️ Frontend: React.js, Next.js, Tailwind CSS ➡️ Backend: Node.js, Express.js, Django, Flask ➡️ Mobile: React Native, Swift, Kotlin ➡️ AI: ChatGPT integration, intelligent automation ➡️ Database: MongoDB, PostgreSQL, Firebase ➡️ Cloud: AWS, Google Cloud ➡️ Cybersecurity: Security Architecture, Vulnerability Assessment, Authentication & Authorization, Data Protection, Secure API Design, Security Auditing Industries Served: I’ve helped clients in e-commerce, finance, education, real estate, and more. Let’s discuss how I can help your business thrive with tailored solutions that deliver real impact. Please use the following keywords to find me: Full Stack Developer, MERN Stack Developer, React Developer, Node.js Developer, MongoDB Developer, Express.js Developer, JavaScript Developer, TypeScript Developer, React.js, Node.js, MongoDB, Express.js, RESTful API Developer, GraphQL Developer, Backend Developer, Frontend Developer, Mobile App Developer, Flutter Developer, Flutter Expert, Dart Developer, Cross-Platform Mobile Development, Hybrid Mobile Apps, Android Development, iOS App Development, App Development, App UI/UX Design, App Prototyping, Native App Development, Mobile App Development, Mobile Application Development, App Store Optimization (ASO), API Integration, PHP Developer, PHP Web Development, Laravel Developer, WordPress Development, Custom PHP Solutions, Web Development, Responsive Web Design, PHP Frameworks, MySQL, PostgreSQL, AWS, Cloud Computing, AWS Developer, Amazon Web Services (AWS), Firebase Integration, Payment Gateway Integration, Serverless Architecture, Microservices Architecture, Database Design, Web API Development, App Performance Optimization, Push Notification Integration, App Deployment, App Updates, Mobile App Testing, API Security, OAuth, JWT Authentication, Continuous Integration (CI/CD), DevOps, Git & GitHub, Docker, Kubernetes, Agile Development, Jira & Trello, Unit Testing, Quality Assurance (QA), Version Control, Cross-Platform Solutions, Mobile App UX/UI Design, Web Application Security, App Maintenance, App Customization, Web Application Optimization, Web Performance Optimization, Code Reviews, E-commerce Web Development, SaaS Development, SEO for Apps, App Consulting, App Architecture, Cloud Solutions, Mobile App Consulting, App Analytics Integration, App Cloud Integration, Push Notifications, Firebase Cloud Messaging, In-App Purchases (IAP), Single Page Applications (SPA), Progressive Web Apps (PWA), WebSocket Development, Mobile Game Development, UX/UI Prototyping, Mobile App Debugging, App Wireframing, Serverless App Development, CI/CD Pipeline Setup, App Performance Testing, AI, ChatGPT, Artificial Intelligence, Blockchain.

🟢 Available Now - I guarantee 𝗮 𝗿𝗼𝗯𝘂𝘀𝘁, 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲, 𝗮𝗻𝗱 𝗲𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝘁𝗹𝘆 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗶𝗻𝗴 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 that will streamline your business operations. 𝗜 𝗮𝗺 𝘁𝗵𝗲 𝗽𝗲𝗿𝗳𝗲𝗰𝘁 𝗳𝗶𝘁 𝗳𝗼𝗿 𝘆𝗼𝘂𝗿 𝗕𝘂𝗯𝗯𝗹𝗲 𝗮𝗽𝗽 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 and 𝗔𝗽𝗽 𝗦𝘁𝗼𝗿𝗲 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻. I can confidently guarantee these as a result. Hit the "𝕀𝕟𝕧𝕚𝕥𝕖 𝕥𝕠 𝕁𝕠𝕓" or "𝕄𝕖𝕤𝕤𝕒𝕘𝕖" 𝕓𝕦𝕥𝕥𝕠𝕟 to 𝔹𝕠𝕠𝕜 𝕒 𝕗𝕣𝕖𝕖 𝕔𝕠𝕟𝕤𝕦𝕝𝕥𝕒𝕥𝕚𝕠𝕟. 🎯 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗕𝘂𝗯𝗯𝗹𝗲 𝗳𝗿𝗼𝗻𝘁-𝗲𝗻𝗱 𝗮𝗻𝗱 𝗯𝗮𝗰𝗸𝗲𝗻𝗱 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿. Over the past three years, we’ve hired over 10 bubble experts on Upwork, and Onasanya has undoubtedly been the most knowledgeable and helpful of everyone we’ve worked with. He has a unique ability to solve problems creatively and come up with solutions that you would never have considered. Unlike many developers who are solely technically skilled, Onasanya’s extensive business experience allows him to understand the real priorities and deliver a highly useful product. – Gloria Joy Some of the features I can include in your app are: ✅ Payment Processing ✅ Automated emails ✅ Chat/messaging ✅ User profiles ✅ Account Settings ✅ Admin Portal ✅ 2FA ✅ File upload ✅ API integrations ✅ GPT Agent Development ✅ API Data Extraction ✅ Frontend Developer for Database Query Web App ✅ Game Development 👉 Expertise in Bubble allows me to quickly identify and resolve issues with your individual or company project, ensuring minimal downtime and optimal performance. 👉 My experience in no-code development will facilitate the enhancement and addition of features to your app, making it more intuitive and user-friendly.. ☝️ I'm well-versed in Bubble.io, Airtable, and n8n, which I can integrate seamlessly to automate workflows and enhance the capabilities of your Bubble app. Experience the quality service I offer. 𝗛𝗶𝘁 𝘁𝗵𝗲 '𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯' 𝗼𝗿 '𝗠𝗲𝘀𝘀𝗮𝗴𝗲' 𝗯𝘂𝘁𝘁𝗼𝗻 and let's get to work! 💼 I'm excited to team up with you to breathe life into your concepts! In today's swiftly evolving no-code bubble.io realm, developers typically fall into two categories: 1. The indifferent developers who construct projects devoid of vision or passion, prioritizing the price tag over long-term value creation. 2. The dedicated dynamo developers who enthusiastically embrace client ideas, infusing their expertise, insight, and commitment into realizing their SaaS/MVP aspirations. 💎💎💎 I assist businesses, startups, scaleups, B2B, B2C, and SMEs in designing internal tools such as CRMs, marketplaces, SaaS products, ⚛custom AI-powered MVPs, etc., tailored to enhance their business systems & operations. My Experience 🚀 Over 5 years dedicating to Bubble coding, ranked Elite Bubble Programmer 🏆 First Rated Plus provider with 100% Job Testimonial ⭐️ 350+ projects delivered with 500+ happy clients on freelancing platforms 📈 Experienced developing fast-loading progressive web apps (PWAs), multi-tenant SaaS, and interactive dashboards ⛓ Integrate third-party APIs like Stripe, Mailchimp, Google Sheets ⚡ Build secure user authentication, role management, payments and subscriptions 🎯 Expert in UI/UX design, branding, typography, art direction, and usability principles 💻 Fluent in workflow automation, complex logic, efficient data modeling, mathematics, algebra 🌎 Cross-browser and mobile responsive sites following accessibility standards ✅ Successful track record designing, launching and scaling apps for startups and enterprises 👥 Leading a talented team of Bubble developers to deliver quality solutions, fast iterations and ongoing support Here are a few of the services I provide: ✅ Bubble Development ✅ Bubble Products ✅ Bubble SaaS ✅ Bubble Apps ✅ Bubble Native ✅ Bubble Design. ✅ Bubble Development ✅ Bubble Web App ✅ Bubble Marketplace ✅ Bubble MVP. ✅ Bubble Plugins ✅ Bubble Coach ✅ Bubble AI SaaS ✅ Bubble API ✅ Bubble Stripe Integration ✅ Bubble Prototype ✅ Bubble Webhooks ✅ Bubble Workflows ✅ Bubble AI Automations ✅ Bubble Integrations ✅ Bubble web app development ✅ No-Code AI SaaS Development Keywords: bubble.io examples | bubble.io chat | bubble.io crypto | bubble.io chatbot | bubble.io developer | bubble.io documentation | bubble.io down | bubble.io developer jobs | bubble.io discord | bubble.io database | bubble.io demo | bubble.io dropdown menu | bubble.io developer salary | bubble.io desktop app | bubble.io data | bubble.io design | bubble.io dashboard | bubble.io export code | bubble.io external database | bubble.io ecommerce | bubble.io erp | bubble.io email confirmation | bubble.io editor | bubble.io | bubble developer | bubble no code | bubble mvp | bubble api | bubble app | bubble io | bubble ux | bubble landing page | bubble io developer | bubble developers | bubble designer | bubble figma | bubble plugin | bubble ui | bubble web app | bubble.io developer | bubble.io api | bubble.io canvas | bubble.io

🕰️ Available in the US, Canada, UK, Australia, and preferred time zones 🏆 Top-Rated — Top 10% on Upwork 🌟 10+ Years of Software Development Experience ✔ 90+ Successful Projects Delivered 📞 40+ Hours/Week Availability I build AI-powered SaaS products and high-performance web applications that are designed to work reliably in the real world, not just look good in a demo. If you need a developer who can take an idea from architecture → development → AI integration → deployment, I can handle the full stack. I specialize in building AI SaaS platforms, web applications, dashboards, automation systems, API integrations, and custom business software using modern technologies including React, Next.js, TypeScript, Python, and AI/LLM APIs. My approach is to understand the business logic first, then build the technical architecture around it. This helps avoid the common problems of rushed SaaS development: fragile integrations, poor database design, slow applications, difficult-to-maintain code, and AI features that don't work reliably in production. ### What I can build for you ✔ AI-powered SaaS platforms ✔ Custom web applications ✔ AI agents and automation systems ✔ LLM and OpenAI integrations ✔ React / Next.js frontends ✔ Python backends and APIs ✔ REST API & third-party integrations ✔ Admin dashboards and internal tools ✔ Authentication, subscriptions & payment systems ✔ Database architecture and optimization ✔ Real-time applications and communication systems ✔ MVPs and production-ready platforms ✔ Existing application modernization and performance improvements ### My Core Stack Frontend: React, Next.js, TypeScript, JavaScript, Tailwind CSS Backend: Python, FastAPI, Flask, Node.js AI: OpenAI, LLM APIs, AI Agents, RAG, embeddings, computer vision, automation Databases: PostgreSQL, MySQL, MongoDB, Redis Integrations: REST APIs, webhooks, third-party SaaS/API integrations Infrastructure: Docker, Linux, cloud deployment, CI/CD I do not just write code I take ownership of the architecture, implementation, integrations, performance, and production readiness of the application. If you're building an AI product, SaaS platform, or complex web application, send me the requirements and I'll help you turn them into a practical, scalable solution. Available 40+ hours/week and comfortable working with US, Canada, UK, Australia, and other international teams. 🔑 Keywords: Full Stack Developer | MERN Stack Developer | Senior Full Stack Developer | React Developer | Node js Developer | Full Stack Developer MERN | Next js Developer | MongoDB Developer | Expert Full Stack Developer | Express js Developer | GraphQL Developer | Full Stack Developer SaaS | Backend Developer | TypeScript Developer | Full Stack Developer React Node | Angular Developer | PostgreSQL Developer | Full Stack Developer API | Web Application Developer | Cloud Developer | Full Stack Developer MongoDB | DevOps Developer | REST API Developer | Full Stack Developer Azure | Docker Developer | CI CD Developer | Full Stack Developer UI UX | JavaScript Developer | Full Stack Developer MVP | Frontend Developer | WebSocket Developer | Full Stack Developer Clean Code | SaaS Developer | Full Stack Developer Scalable | API Developer | Full Stack Developer Bootstrap | MUI Developer | Full Stack Developer Docker | Tailwind Developer | Full Stack Developer WebSocket | UI UX Full Stack Developer | AI | OpenAI | API integration

🚀 𝗦𝘁𝗼𝗽 𝘄𝗼𝗿𝗿𝘆𝗶𝗻𝗴 𝗮𝗯𝗼𝘂𝘁 𝗱𝗼𝘄𝗻𝘁𝗶𝗺𝗲, 𝘀𝗰𝗮𝗹𝗶𝗻𝗴, 𝗮𝗻𝗱 𝗰𝗹𝗼𝘂𝗱 𝗰𝗼𝗺𝗽𝗹𝗲𝘅𝗶𝘁𝘆, 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗔𝗪𝗦 & 𝗞𝘂𝗯𝗲𝗿𝗻𝗲𝘁𝗲𝘀 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝘁𝗵𝗮𝘁 𝗷𝘂𝘀𝘁 𝘄𝗼𝗿𝗸, 𝘀𝗰𝗮𝗹𝗲 𝗳𝗮𝘀𝘁, 𝗮𝗻𝗱 𝘀𝘁𝗮𝘆 𝘀𝗲𝗰𝘂𝗿𝗲. Senior DevOps & Cloud Engineer | 8+ Years Experience | AWS • EKS • Kubernetes • IaC I bring 8+ years of hands-on experience designing and delivering secure, scalable, production-ready AWS infrastructure using Amazon EKS, Kubernetes, AWS CDK (TypeScript), and Pulumi. I specialize in multi-tenant Kubernetes (vCluster), intelligent autoscaling (KEDA, Karpenter), CI/CD automation, Docker, GitHub Actions, and DevSecOps to power high-growth, cloud-native platforms. ✅ 𝗔𝗪𝗦 𝗗𝗲𝘃𝗢𝗽𝘀 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 -Amazon EC2, VPC, IAM, S3, Lambda, CloudWatch, CloudTrail -AWS CodePipeline, CodeDeploy, CodeBuild -High availability, auto-scaling, and fault-tolerant architectures ✅ 𝗖𝗜/𝗖𝗗 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 -CI/CD pipeline design and optimization (Jenkins, Git, AWS CodePipeline) -Automated deployments, rollbacks, and blue-green strategies -DevOps best practices for fast and reliable releases ✅ 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 𝗮𝘀 𝗖𝗼𝗱𝗲 (𝗜𝗮𝗖) -Terraform, AWS CloudFormation -Reusable, version-controlled infrastructure -Environment provisioning (dev, staging, production) ✅ 𝗖𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿𝘀 & 𝗢𝗿𝗰𝗵𝗲𝘀𝘁𝗿𝗮𝘁𝗶𝗼𝗻 -Docker containerization -Kubernetes (EKS) deployment and management -Microservices and cloud-native architecture ✅ 𝗖𝗼𝗻𝗳𝗶𝗴𝘂𝗿𝗮𝘁𝗶𝗼𝗻 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 & 𝗦𝗰𝗿𝗶𝗽𝘁𝗶𝗻𝗴 -Ansible automation -Python & Bash scripting for DevOps workflows ✅ 𝗠𝗼𝗻𝗶𝘁𝗼𝗿𝗶𝗻𝗴, 𝗟𝗼𝗴𝗴𝗶𝗻𝗴 & 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 -CloudWatch monitoring & alerting -AWS security best practices (IAM, least privilege, audit logging) -Secure DevOps / DevSecOps mindset 🔹 What Clients Get When They Hire Me ✔️ Faster deployments with reliable CI/CD pipelines ✔️ Secure, scalable AWS cloud infrastructure ✔️ Reduced cloud costs through optimization ✔️ Clean, maintainable, and automated DevOps workflows ✔️ Clear documentation and long-term support 📩 Let’s discuss your project. Whether you’re building a new cloud platform, scaling Kubernetes, or optimizing AWS costs I can help you design and implement the right DevOps strategy. Send a message and let’s get started. AWS DevOps Engineer, AWS DevOps, AWS Cloud Engineer, AWS Solutions Architect, AWS Developer, Amazon EC2, Amazon S3, Amazon RDS, AWS Lambda, AWS VPC, AWS EKS, AWS ECS, AWS API Gateway, AWS IAM, AWS CloudFront, AWS Migration, AWS Cost Optimization, Cloud Deployment, Server Migration, CI/CD Pipeline, Docker, Kubernetes, Terraform, Infrastructure as Code, DevOps Automation, Linux Server, Nginx, Monitoring & Logging, High Availability Architecture, MERN Stack Developer, Full Stack Developer, React.js Developer, Next.js Developer, Node.js Developer, MongoDB Developer, REST API Development, GraphQL API, TypeScript Developer, SaaS Application Development.

I’m a pragmatic full-stack developer with 5+ years of experience specializing in Python (Django, Flask), React, and production REST APIs. I ship reliable, scalable web apps and backend systems with clean PostgreSQL designs and repeatable deployment processes. I’ve led releases, implemented CI/CD workflows, and designed optimized PostgreSQL schemas for high-read systems. Recent contract work involved debugging large Django codebases, building APIs for dashboards, and delivering frontends for Elixir/Phoenix projects. I prioritize clean architecture, automated tests, and clear communication so you get reliable code and predictable delivery. My approach is API-first, testable, and focused on user experiences and robust functionality. My Full Tech Stack (high level) Frontend: React (hooks, component libraries), JavaScript (ES6+), HTML5, CSS3, Tailwind CSS, Bootstrap, SASS, responsive design. Backend: Python (Django, Flask, FastAPI) Elixir / Phoenix; RESTful API design, JWT/OAuth auth, WebSockets. Node.js, Express.js, PHP, Laravel. GraphQL, microservices, authentication systems Data & infra: PostgreSQL (schema design, indexing, migrations), MySQL, SQL performance tuning, ETL & data extraction scripts, Docker, CI/CD. AWS, Vercel, Render, Heroku RESULTS I DELIVERED As a Django expert, I supported a large production platform (Founders Network) for ~948 hours, resolving critical bugs, shipping system upgrades, and maintaining a 5.0 client rating. As an API & Backend expert, I built and shipped core APIs and backend workflows for apprent.com, taskeen.sa, and dietcity.sa, delivering secure subscription and booking flows, reliable background jobs, and maintainable, well-documented endpoints. As an Elixir / Phoenix & Frontend expert, I delivered UI work ahead of schedule for a Phoenix project. Clients praised my responsiveness and clarity in communication. If you want a partner to take your project from spec to production, audit and stabilize an existing system, or build a fast MVP, Let's Connect! Keywords: Full Stack Developer, Web Developer, MERN Stack Developer, MEAN Stack Developer, JavaScript Developer, React.js Developer, Node.js Developer, Next.js Developer, Angular Developer, Vue.js Developer, PHP Developer, Laravel Developer, Python Developer, Django Developer, API Development, REST API, GraphQL, MongoDB Developer, MySQL Developer, PostgreSQL Developer, AWS Developer, Cloud Developer, Frontend Developer, Backend Developer, Software Engineer, E-commerce Website Development, SaaS Developer