I'm java expert over 15 years in many positions such as as programmer, freelancer, analyst, java team leader, product architect, project manager. I'm major on Document Output, Document Management System, Enterprise Content Management (ECM), Document Conversion fields, Digital Image processing. Besides that, i have lot of experiences and good skills in WDK (Windows driver kit) development, Alfresco ECM, Filenet ECM, Filenet BPM, Education, Transportation, Hotel Reservation, Human Resource, Business Process Management (BMP), Groupon, CRM (Customer Relationship Management). About technology stack, almost time, I have worked and researched in J2EE technology and Open Source Frameworks such as Cruise Control, Hudson, JBoss, Apache Tomcat, Apache server, Tomcat/ JBoss High available system (HA- clustering & load balancing between many web servers), BPM Activiti, Apache Axis, Apache Struts, Apache Ant, Apache Lucene, Java Server Faces, ZK (the very famous Ajax framework for Java), Vaadin, GWT, Selenium, JQuery, iText, PDFLib, JTOpen, Spring, Hibernate, JPA, Eclipse, MyEclipse. Several years go, i started working with LAMP stack. MongoDB, Php, Wordpress, WooCommerce, Yii are also my favorite language/framework. My favorite methodology to develop software product is Test Driven Development (TDD). Generally, I’m very eager to work with Java and Php. In addition to the practical experience, I achieved the Master degree in Computer Science field at the Natural Science University with “Optical Music Recognition” in July 2005.

Senior Full-Stack Engineer with 10+ years building mobile, web, AI, desktop, and IoT applications. I help startups and enterprises ship MVPs and scale apps 2x faster, with expertise in performance, reliability, automation, and cross-platform delivery. Core Expertise • Mobile & Desktop: Android, iOS, React Native, Kotlin, Swift, Tizen, WebOS, C++, C#, Delphi • Web & Backend: Node.js, .NET, TypeScript, JavaScript, Python, Java, Go • AI & Data: LLMs (RAG pipelines, Ollama, OpenAI, Anthropic APIs), LangChain, Hugging Face, TensorFlow, PyTorch, spaCy, Scikit-learn • Automation & Orchestration: n8n, Zapier, Make (Integromat), Airflow, Monday, CI/CD pipelines • Media Processing: OpenCV, FFmpeg, real-time video/audio streaming • IoT & Devices: Bluetooth, NFC, Alexa integration, Thermal Imaging • Cloud & Enterprise: AWS, Azure, Google Cloud, Firebase, MS Graph, REST, WebSockets, SSO (SAML, Keycloak) • DevOps: Git, Docker, Jenkins, Fastlane, Visual Studio, Xcode Specialized Solutions • Real-time video/audio solutions (FFmpeg, OpenCV, WebRTC) • AI-powered apps with LangChain, Hugging Face, n8n automations, and RAG pipelines Workflow automation with n8n, Zapier, Make, Airflow • IoT device integration (Bluetooth, NFC, Alexa) • Secure enterprise integrations (MS Teams, SSO, Keycloak) • Scalable backends & APIs (Node.js, .NET, Firebase, GraphQL)

I'm a skilled Java developer with 7+ years of experience and a Bachelor's degree in Computer Science., specializing in Java, Python, and JavaScript.I have been tech leader in the last two companies. My expertise is in Backend/Frontend development, Restful API, Web Scraping & Crawling, Devops. ➢ Strong Programming skills, in designing and implementing scalable applications using Spring Boot, Spring MVC, Java-J2EE, Nodejs, Express, Struts, Spring Data JPA, JPA, Hibernate, Spring Securit, Rabbitmq, etc. ➢ Database: MySQL, PostgreSQL, Redis, MongoDB, ClickHouse. ➢ Familiar with SQL, can do performance tuning and riched experience in database design. ➢ CI/CD: Jenkins/Gitlab CI/CD/ Github Action. ➢ DevOps: Linux, Ansible, Docker, Kubernetes. ➢ Extensive experience in working with JavaScript/TypeScript languages, frameworks, libraries, and technologies such as Vue.js/ React, NextJS, Tailwind, ShadCN. ➢ Familiar with Web Scraping and automation using Python or JS. My clients' happiness is always my top concern. I'll be looking for a communication from you.:)

I am a tech enthusiast and Software Engineer with over 7 years of experience across several fields. Front-end experience: Flutter (mobile, web) Back-end experience: Python, Firebase, Java, Node.js, C#, Ruby on Rails AI experience: I have hands-on experience building apps that integrate AI capabilities—leveraging machine learning, natural language processing, and generative models to deliver smarter, more adaptive user experiences. I am the co-founder of a Flutter agency, SmartUp Software, where we provide custom software development and staff augmentation services. We've successfully developed and deployed 20+ mobile and web applications. I also developed an award-winning social project called Berrinche, aimed at helping parents and therapists of children with ASD identify the causes of disruptive behaviors and discover effective ways to manage them.

✅ Top rated by Upwork ✅ 5+ years of experience ✅Get your urgent tasks done within 24 hours I'm a Python expert with 5+ years of Industry experience in websites data scraping, bot development and browser automation. • Ability to scrape job boarding, yellow pages, classified, LinkedIn, and e-commerce websites. • Ability to crawl javascript loading, IP blocking, Rate limit, and captcha protection websites. Ability to scrape job board websites including LinkedIn, Indeed, Wellfound, Glassdoor etc. • Ability to scrape from PDF documents too. • Ability to crawl 1M+ records per day. • Ability to scrape mobile app data too. • I will be available 24/7 for support. • Feel free to contact me if you have any available work ;) Perks: • No need to hire or pay before the job is completed satisfactorily. • 100% client satisfaction. • Responsible for back-and-forth changes. • Script can be delivered in case it is required. • Fast and accurate data • Deliverables are available in all popular formats (JSON, CSV, EXCEL, XML, SQL) • Frequent updates about the current progress • Can set up in client system irrespective of OS environment. Range of tasks: • Android Apps, Windows Apps scraping. • Web scraping, crawling, parsing, and data extraction & browser automation. • Bypass any captchas(Cloudflare Captcha, Recaptcha) to prevent IP blocking and bot detection. • PDF Extraction along with OCR techniques Skills • Python, Java, Javascript • Requests, Selenium, Beautiful Soup, Scrapy, Pupeeter, LXML • PDF Parsing, Conversion from PDF to EXCEL • ORACLE, MYSQL, Advanced Database Skills. I hope to hear from you soon.

AI Engineer | LLM Systems | Automation Developer | Node.js Specialist I build AI-powered applications, intelligent automation systems, scalable backend platforms, and production-ready APIs that help businesses automate workflows, improve operations, and accelerate product development. Not just APIs. Not just backend systems. I engineer scalable software and AI-driven solutions built for real business use cases. With 4+ years of software engineering experience, I specialize in backend architecture, microservices, AI integrations, and modern full-stack development. AI & LLM Development - OpenAI / GPT integrations - LLM-powered applications - AI chatbots & conversational systems - AI workflow automation - Prompt engineering - API-based AI integrations - Intelligent business process automation Backend Engineering & System Design - Java & Spring Boot - Microservices Architecture - RESTful API Design & Integration - Backend System Development - Secure & Scalable Applications - Event-Driven & Distributed Systems Full Stack Development - Node.js, Nest.js - React.js/Next.js - Frontend & Backend Integrations - Modern Web Applications Automation & Integration - Workflow automation - API integrations - Slack / Teams / third-party integrations - Process automation systems - Backend automation services - Data synchronization & operational tooling Core Technology Stack - Backend: Java, Spring Boot, Node.js - Frontend: React.js, JavaScript - AI: OpenAI, LLM Integrations, Prompt Engineering, AI Automation - APIs: REST APIs, Third-Party Integrations - Architecture: Microservices, Scalable Backend Systems - Tools: Git, Slack, Microsoft Teams, Remote Collaboration Why i am the right fit - Strong backend and enterprise development experience - Clean, scalable, maintainable code - Strong communication - Experience across backend, frontend, integrations, and automation - Dedicated remote setup and professional workflow Best Fit Projects - LLM integrations & AI-enabled applications - Backend-heavy AI systems - Automation platforms & workflow solutions - Microservices & API platforms - Full-stack business applications - SaaS product development - Enterprise backend systems Ready to build scalable software or AI-powered solutions? Send an invite or message, let's discuss your project requirements and build something impactful together.

If you are looking for a developer who can handle any tech challenge—web, mobile, AI, frontend, backend—you have found the right profile. I am a Senior Full-Stack Developer with 5+ years of commercial experience across multiple technology stacks. From React frontends to Python AI backends, from mobile apps to cloud deployment, I help businesses build complete solutions regardless of the tech required. Unlike specialists limited to one area, I bring versatility. I master JavaScript (React/Angular/Vue + Node), Python (Django/Flask/FastAPI), mobile development (React Native), and AI integration—giving you one developer who can handle your entire project. 💎 What I Bring to Your Project 5+ Years Multi-Stack Experience: Built web apps, mobile apps, AI systems, and enterprise platforms. Complete Technology Coverage: Frontend, Backend, Mobile, AI, Databases, Cloud—I handle it all. AI Integration Expertise: OpenAI GPT-4, Claude, Gemini, AI chatbots, and automation. One-Stop Solution: Eliminates coordination overhead between multiple specialists. 🛠️ Technical Expertise (Complete Arsenal) Frontend Development: - React & Next: Hooks, Redux, Context API, SSR/SSG, TypeScript - Angular: RxJS, Services, NgRx, Enterprise apps - Vue 3: Composition API, Vuex, Pinia, Nuxt - UI: Tailwind CSS, Material UI, Bootstrap, Ant Design, Chakra UI Backend Development: - Node & Express: RESTful APIs, GraphQL, Microservices - Python: Django, Flask, FastAPI for robust backends - Java Spring Boot: Enterprise systems, Servlets - Authentication: JWT, OAuth, Passport, Session management - Real-time: WebSockets, Socket connections Mobile Development: - React Native: Cross-platform iOS and Android apps - Native Features: Camera, GPS, Push notifications - App Store: iOS and Android deployment AI & Automation: - LLM Integration: OpenAI GPT-4, Claude API, Gemini - AI Chatbots: Context-aware conversational interfaces - Python AI: LangChain, RAG systems, Vector databases - Automation: n8n, Make, Zapier workflows Database & Cloud: - Databases: MongoDB, PostgreSQL, MySQL, SQL Server, Firebase, Redis - Cloud: AWS, Google Cloud, Azure, Heroku, Vercel - DevOps: Docker, CI/CD, Nginx, PM2 💼 How I Work Discovery: Understanding your complete requirements across all technical areas. Technology Selection: Choosing the best stack for your specific needs. Full-Cycle Development: From architecture to deployment. Quality Delivery: Tested, documented, production-ready. Ongoing Support: Maintenance, updates, feature additions. ✅ What I Build - Complete Web Applications (MERN/MEAN/MEVN) - Mobile Apps (React Native - iOS/Android) - AI-Powered Features (Chatbots, LLM integration) - SaaS Platforms (Multi-tenant, Subscriptions) - E-commerce Solutions (Cart, Payments, Inventory) - Enterprise Systems (CRM, ERP, Custom apps) - APIs & Microservices (REST, GraphQL) - Real-time Apps (Chat, Notifications, Live data) - Progressive Web Apps (PWA) ✅ Industries Served SaaS | E-commerce | FinTech | Healthcare | EdTech | Real Estate | Enterprise | Startups ✅ Why Hire Me ✓ One Developer, Complete Solution: No need for separate frontend, backend, mobile, AI specialists ✓ Multi-Stack Flexibility: Right tool for each job ✓ Faster Development: No coordination overhead ✓ Cost Effective: One versatile developer vs. entire team ✓ Clear Communication: Single point of contact ✅ Ready to Build? Whether you need web, mobile, AI integration, or a complete platform—I deliver production-ready solutions.

I build production-ready mobile apps in weeks, not months, using FlutterFlow for speed and custom Flutter + backend APIs for scale. Whether you’re launching an MVP or upgrading an existing app, I deliver pixel-perfect UI, robust backend logic, and seamless performance across iOS, Android, and web. WHAT I DO Fast MVPs: FlutterFlow for rapid UI + custom Flutter/Dart for advanced features Full-stack apps: Firebase, Supabase, or custom Spring Boot backends Scalable architecture: Clean, maintainable code that grows with your business PROVEN WORK Property management platform – 100+ active users, published on Play Store Event coordination app – built with FlutterFlow + custom APIs Multiple MVPs delivered from concept to production in 4–6 weeks TECH STACK Mobile: FlutterFlow, Flutter (custom code), Dart Backend: Firebase (Auth, Firestore, Functions), Supabase, Spring Boot (Java), REST APIs Other: SQL, Python, JavaScript, Google Cloud Functions HOW I WORK Clear communication. Clean, scalable code. On-time delivery. Ready to build? Send your app idea, timeline, and budget, I’ll reply with a clear plan within 24 hours.

I’m a cloud and software developer with a solid background in AWS, Python, and DevOps. I recently graduated from college with a degree in Computer Science, and since then I’ve been focused on building scalable APIs, serverless apps, and automated deployments that are production-ready and easy to maintain. What I bring: Cloud: AWS certified (Solutions Architect & Developer Associate). Hands-on with Lambda, API Gateway, DynamoDB, ECS, and S3. Development: Strong in Python and Java, experienced with Flask for APIs and modern backend development. Machine learning: Knowledge on Tensorflow(neural networks), langchain(agents and RAG). Ability to create models to make predictions based on historic data. DevOps: Skilled with Docker, Terraform, and CI/CD (GitHub Actions, Jenkins). Projects: Delivered serverless backends, event-driven workflows with SQS/EventBridge, and containerized apps running on ECS and Kubernetes. Also REST apis written in flask/django/springboot(java) and several frontends in both React and NextJS. Fluent in English and Spanish, and open to work on both fixed-price and hourly projects.

Hi, I’m Abdul K— a Full-Stack Developer with 15+ years of hands-on experience delivering modern, scalable, and high-performing web solutions. Over the years, I’ve successfully built and deployed a wide range of applications — from SaaS platforms and AI-driven tools to custom e-commerce and enterprise systems. My goal is to turn ideas into reliable, business-ready products that drive results. Services I Offer ✅ SaaS Application Development ✅ AI Integration & Automation ✅ Custom Web App Development ✅ Database Design & Architecture ✅ Performance Optimization ✅ E-commerce Solutions ✅ API Development & Documentation ✅ System Migration & Deployment ✅ Landing Page & Company Website Design ✅ Server Setup & Maintenance Technical Expertise ✅ Django | Node.js | Express.js | Python | ASP.NET ✅ React.js | Next.js | Tailwind CSS | Bootstrap ✅ PostgreSQL | MongoDB ✅ Docker | Kubernetes | CI/CD | YAML ✅ RESTful APIs | Git & GitHub Why Work with Me ✔️ Comprehensive Expertise: With a strong background in AI, full-stack development, and cloud technologies, I bring the versatility needed to craft efficient, high-quality solutions. ✔️ Clear Communication: I maintain consistent communication and provide transparent progress updates throughout every stage of the project. ✔️ Deadline-Driven: I’m committed to delivering exceptional results on time and within budget—turning your ideas into reality with precision and reliability. Whether you’re looking for a reliable developer to build something from the ground up or improve an existing system, I’m here to help. Let’s connect and bring your next project to life!