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Zain Ul A.

Bingen am Rhein, Germany

$60/hr
5.0
1 jobs

๐‹๐จ๐จ๐ค๐ข๐ง๐  ๐Ÿ๐จ๐ซ ๐š ๐…๐ฎ๐ฅ๐ฅ ๐’๐ญ๐š๐œ๐ค ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ž๐ซ ๐š๐ฏ๐š๐ข๐ฅ๐š๐›๐ฅ๐ž ๐ข๐ง ๐ฒ๐จ๐ฎ๐ซ ๐ญ๐ข๐ฆ๐ž๐ณ๐จ๐ง๐ž ๐š๐ง๐ ๐ซ๐ž๐š๐๐ฒ ๐Ÿ๐จ๐ซ ๐ช๐ฎ๐ข๐œ๐ค ๐œ๐จ๐ฆ๐ฆ๐ฎ๐ง๐ข๐œ๐š๐ญ๐ข๐จ๐ง ๐ก๐ž๐ฅ๐ฉ๐ข๐ง๐  ๐›๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ๐ž๐ฌ ๐ญ๐ฎ๐ซ๐ง ๐ข๐๐ž๐š๐ฌ ๐ข๐ง๐ญ๐จ ๐Ÿ๐š๐ฌ๐ญ ๐ฌ๐œ๐š๐ฅ๐š๐›๐ฅ๐ž ๐ซ๐ž๐ฏ๐ž๐ง๐ฎ๐ž ๐ ๐ž๐ง๐ž๐ซ๐š๐ญ๐ข๐ง๐  ๐ฐ๐ž๐› ๐š๐ฉ๐ฉ๐ฅ๐ข๐œ๐š๐ญ๐ข๐จ๐ง๐ฌ ๐ฐ๐ข๐ญ๐ก ๐จ๐ฏ๐ž๐ซ ๐Ÿ“ ๐ฒ๐ž๐š๐ซ๐ฌ ๐จ๐Ÿ ๐ž๐ฑ๐ฉ๐ž๐ซ๐ข๐ž๐ง๐œ๐ž ๐›๐ฎ๐ข๐ฅ๐๐ข๐ง๐  ๐’๐š๐š๐’ ๐ฉ๐ซ๐จ๐๐ฎ๐œ๐ญ๐ฌ ๐ฐ๐ž๐› ๐š๐ฉ๐ฉ๐ฅ๐ข๐œ๐š๐ญ๐ข๐จ๐ง๐ฌ ๐š๐ง๐ ๐€๐ˆ ๐ฉ๐จ๐ฐ๐ž๐ซ๐ž๐ ๐ฌ๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ ๐Ÿ๐จ๐ซ ๐ฌ๐ญ๐š๐ซ๐ญ๐ฎ๐ฉ๐ฌ ๐š๐ง๐ ๐›๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ๐ž๐ฌ Full Stack Developer | SaaS, AI & Web Application Expert (5+ Years Experience) ๐Ÿš€ What I Can Help You Build SaaS Applications & MVP Development * Full Stack Web Applications * AI Applications & Chatbots * Business Automation Tools * CRM & Third-Party API Integrations * Admin Panels & Dashboards * Booking & Reservation Systems * E-Commerce Platforms * Backend APIs & Microservices * Application Optimization & Performance Improvements ๐Ÿข Industries I Have Worked With Healthcare Appointment systems, patient management platforms, workflow automation systems Education (EdTech Learning management systems, course platforms, student dashboards Real Estate (PropTech Property listing platforms, booking systems, CRM integrations E-Commerce Order management systems, inventory control, marketplace integrations SaaS & Startups MVP development, scalable system architecture, product launch solutions ๐Ÿ’ผ What Clients Achieve Working With Me * Faster product launch without unnecessary complexity * Reduced operational costs through automation * Replacement of manual processes with smart systems * Improved user experience, retention, and conversions * Scalable software built for long-term growth ๐Ÿ›  Core Tech Stack Backend Development PHP (Laravel), Python, Node.js Frontend Development React.js, JavaScript (ES6), HTML5, CSS3 Full Stack Architectures MERN Stack (MongoDB, Express, React, Node.js) MEAN Stack (MongoDB, Express, Angular, Node.js) Databases MySQL, PostgreSQL, MongoDB AI & Automation Python, AI APIs, workflow automation, web scraping, intelligent agents API & Integrations REST APIs, payment gateways, CRM systems, third-party integrations ๐Ÿ“ฉ Letโ€™s Work Together If you're looking for a reliable Full Stack Developer to build or scale your product, I am available in your timezone and ready for quick communication. Letโ€™s turn your idea into a scalable, high-performance software product. ๐Ÿ” Relevant Keywords Full Stack Developer || SaaS Developer || Web Application Developer || AI Developer || Backend Developer || Frontend Developer || Laravel Developer || React Developer || Node.js Developer || Python Developer || MERN Stack Developer || MEAN Stack Developer || API Developer || REST API Development || CRM Integration Developer || Payment Gateway Integration || Booking System Developer || E-Commerce Developer || Dashboard Developer || Admin Panel Developer || Automation Developer || Business Automation Expert || AI Chatbot Developer || MVP Developer || Startup Developer || Scalable Web Applications || Software Engineer || Database Design || MySQL Expert || PostgreSQL Expert || MongoDB Expert || Performance Optimization || Web App Speed Optimization

  • API Integration
  • Full-Stack Development
  • PHP
  • HTML
  • CSS
  • JavaScript
  • Python
  • React
  • MERN Stack
  • React Native
  • Custom PHP
  • Python Script
  • Django
  • PHP Script
  • Bootstrap
  • MySQL
  • SaaS
  • SaaS Development
  • Minimum Viable Product
  • CodeIgniter
Yuri C.

Berlin, Germany

$35/hr
5.0
4 jobs

An experienced software engineer developing with Golang, Ruby, and Vue.JS Received 5-star ratings for all completed projects. Consistently deliver high-quality work

  • Software Development
  • JavaScript
  • Vue.js
  • Ruby on Rails
  • Database Design
  • PostgreSQL
  • Ruby
  • Golang
  • Microservice
  • Docker
Safi Ullah A.

Berlin, Germany

$45/hr
4.6
24 jobs

๐ŸŽ A 100% refund if I set the wrong expectation and canโ€™t deliver. No questions asked! ๐Ÿ… Upwork certified Full Stack Developer ๐Ÿ† Top Rated (Among Top 10% talent on Upwork) ๐Ÿ“ˆ 150M+ Active users on my developed Web Apps ๐Ÿ’Ž 8+ Years of Hands-on Experience โœ… 300+ Websites Designed and Developed โœ… Expert in React/Next.js/Nest.js, Vue.js โœ… Expert in Full-Stack Development MEAN/MERN โœ… Expert in Webflow, Bubble, Retool โœ… Expert in Figma, UI/UX Design & Development โœ… Excellent Communication and Project Management Skills โœ… Custom Rag system, LLMs โœ… Model fine tuning, gpt functions to get exact output. *** Available for RUSH projects *** I have experience with the following industries: ๐Ÿ’ฐ Fintech: Scalable financial platforms with real-time data ๐Ÿฅ Healthcare: HIPAA-compliant patient management and telemedicine ๐Ÿšš Logistics: Real-time tracking and fleet management โœˆ๏ธ TravelTech: Booking systems and travel management tools ๐Ÿ” Cybersecurity: Secure applications and data protection ๐ŸŒพ Agricultural industry ๐Ÿ‘ฉโ€โš•๏ธ eCommerce FRONT-END SKILLS HTML 5, CSS 3, JavaScript, TypeScript/ECMAScript, React.js, Nuxt.js, Gatsby.js, Flexbox, SCSS, SaaS, Bootstrap, Tailwind and Material-UI BACK-END SKILLS Node.js, Next.js, PHP, Python, Java, Ruby, Express, RESTful API and GraphQL FRAMEWORKS Gatsby.js, Angular, Express CMS, React, Vue.Js Strapi CMS, ContentStack Version Control System: GitHub, GitLab ๐‚๐Œ๐’: โ†’ WordPress, Webflow, Shopify, WooCommerce, Wix, Retool, Bubble.io COMMUNICATION AND SOFTWARE MANAGEMENT TOOLS Slack, Discord, JIRA, Asana, Trello, Monday, Clickup, Zoho and Basecamp โœฎ Worked with German unicorn companies โœฎ Available 18 hours a day BOOK A 30-MIN CONSULTATION Interested in discussing you project details with me? You are one click away from making the next web solution for your business. Message me and book a 30-Min Consultation Call. I'll be happy to provide you the technical project plan, time estimate and overall cost. ABOUT ME I am a proficient web developer with a strong focus on React and the MERN stack, and a knack for creating seamless user experiences. Leveraging my expertise in building dynamic and responsive web applications, I specialize in crafting high-performance, data-driven solutions. With a keen eye for design and overall user-experience, I seamlessly bridge the gap between aesthetics and functionality, delivering visually appealing, user-friendly web solutions. My skills in front-end and back-end development, combined with my proficiency in React / React Native / Node.js / MongoDB / Express / DevOps / GPT and LLM apps development make me a valuable asset in delivering cutting-edge web solutions. Over the course of my 8+ years of professional experience, my enthusiasm for technology and programming has only grown, driving me to solve complex technical challenges and come up with innovative solutions. ๐๐จ๐ญ ๐ญ๐ก๐ž ๐‘๐ข๐ ๐ก๐ญ ๐…๐ข๐ญ ๐ˆ๐Ÿ: โŒ Your business operates in industries like betting or adult entertainment. โŒ You donโ€™t value open communication and collaboration throughout the development process. โŒ Mutual respect is not important to you in a working relationship. ๐…๐ข๐ง๐ ๐ฆ๐ž ๐ฐ๐ข๐ญ๐ก ๐ญ๐ก๐ž ๐ค๐ž๐ฒ ๐ฐ๐จ๐ซ๐๐ฌ ๐›๐ž๐ฅ๐จ๐ฐ: API, RESTful API, API Integration, AWS Lambda, Amazon Web Services, Docker, Git, Agile Software Development, Python, JavaScript, ECMAScript, TypeScript, jQuery, AngularJS, React, Redux, Next.js, ExpressJS, Node.js, Prisma, PostgreSQL, SQL, CSS, CSS3, Sass, Tailwind CSS, HTML, HTML5, Template Markup, Mobile App Development, React Native, iOS, iOS Development, Android, Android App Development, Web Development, Web Application, Website, Web Design, Graphic Design, UI/UX Prototyping, User Authentication, Search Engine Optimization, Social Media Account Integration, Chat & Messaging Software, Twilio API, Expo.io, Landing Page, comfy, polotno, Artificial Intelligence.

  • Web Development
  • TypeScript
  • React
  • Next.js
  • Node.js
  • ExpressJS
  • Tailwind CSS
  • JavaScript
  • Full-Stack Development
  • Web Design
  • MERN Stack
  • Back-End Development
  • Front-End Development
  • React Native
  • Shopify
Svyatoslav M.

Berlin, Germany

$41/hr
5.0
47 jobs

Hi! I'm a Senior Generative AI & Full-Stack Engineer with 15+ years of experience specializing in building production-ready AI applications, Custom Chatbots, and Multi-Agent systems adhering to EU AI Act Compliance. Are you looking to bridge the gap between advanced Artificial Intelligence and a robust, production-ready web architecture? I deliver scalable, secure, and smart technical solutions that turn complex business ideas into high-performing digital products. I combine deep expertise in foundational backend/frontend stacks with cutting-edge Generative AI engineering. Whether you need an autonomous AI Agent framework, a high-accuracy RAG pipeline, or a complex enterprise web application, I handle everything from core architecture to seamless UI deployment. Please look at my portfolio below to see my "ML-Based Price Recommendation System", "AI-Powered HR Application Full Stack Development", "Full-Stack Developer For Custom ERP", and many others. Core AI & Machine Learning Expertise: - Large Language Models (LLMs): Custom integration, API optimization, and fine-tuning with OpenAI, LLaMA, Claude, etc. - Advanced RAG Systems: Building intelligent Retrieval-Augmented Generation architectures to connect LLMs with private corporate data sources, minimizing hallucinations. - AI Agents & Conversational Systems: Development of autonomous multi-agent workflows, AI chatbots, smart routing systems, and NLP tools (LangChain, LlamaIndex). Robust Full-Stack Stack: - Backend: Node.js, Express.js, PHP (Laravel, Yii), Python, API Integration, and high-load architecture. - Frontend: React.js, Next.js, and modern JavaScript for intuitive, interactive AI user interfaces. - Databases & Cloud: Vector databases (Pinecone, Chroma), PostgreSQL, MySQL, and secure cloud deployment via Amazon Web Services (AWS Partner & Certified Cloud Practitioner) and GCP. Why Work With Me: - 100% Job Success & Top Rated Plus: A proven track record of delivering clean code, meeting strict deadlines, and maintaining clear communication. - Business-Centric Approach: I don't just write code; I design systems that optimize internal workflows, improve user retention, and cut operational costs. - Agile Integration: backed by the engineering strength of the Greenice team, allowing for rapid scaling if your project requires additional resources. Letโ€™s turn your vision into a production-ready application. Click the "Invite to Job" button, and letโ€™s discuss the technical architecture of your project!

  • Machine Learning
  • Artificial Intelligence
  • Python
  • Deep Learning
  • Amazon Web Services
  • React
  • Data Science
  • Node.js
  • Natural Language Processing
  • Artificial Neural Network
  • SQL
  • JavaScript
  • Git
  • CSS 3
  • PHP
  • Computer Vision
  • TensorFlow
  • Neural Network
  • Supervised Learning
  • Unsupervised Learning
Anas I.

Berlin, Germany

$50/hr
5.0
28 jobs

Security & compliance lead for SaaS and fintech. SOC 2, ISO 27001, pentesting, and fractional vCISO โ€” so security closes enterprise deals instead of blocking them. I'm an Information Security Lead with 10+ years securing SaaS end-to-end. By day I run AppSec and cloud security at a global B2B SaaS unicorn. On Upwork, I bring that same rigor to founders, CTOs, and security leads who need to get audit-ready โ€” fast. OSCP ยท CCNSE ยท CDP | Top Rated | 100% JSS | 25+ five-star reviews | 100+ apps pentested What I deliver: โ†’ SOC 2 & ISO 27001 audit readiness (4โ€“8 weeks): gap analysis, 15+ policies, risk assessment, evidence collection, vendor reviews, auditor handoff. Vanta, Drata, Sprinto, Secureframe, Thoropass. โ†’ Pentesting (1โ€“2 weeks): OWASP-aligned web, mobile, API. Developer-friendly report with repro steps, CVSS, business impact, and remediation. Attestation letter + free retest included. โ†’ Fractional vCISO (retainer): security questionnaires, vendor reviews, board reporting, AWS/Azure/GCP posture, IR readiness, continuous compliance. Best fit if you're: prepping your first SOC 2 or ISO 27001 audit, losing enterprise deals on security questionnaires, stuck inside Vanta/Drata without knowing what to upload, or scaling on AWS and need a security baseline โ€” without paying $250k for a full-time CISO. Frameworks: SOC 2, ISO 27001:2022, NIST CSF, NIST 800-53, PCI DSS, GDPR, HIPAA, OWASP ASVS/MASVS, CIS Benchmarks. Stack: Burp Suite Pro, Nuclei, AWS Security Hub/GuardDuty, Terraform, GitHub Actions, Snyk, SAST/DAST/SCA, Python. Next step: send your scope or just describe where you're stuck. Within 24 hours you'll get a fixed-price quote, SOW, and timeline. If I'm not the right fit, I'll tell you who is.

  • Vulnerability Assessment
  • Kali Linux
  • Penetration Testing
  • Application Security
  • Business with 10-99 Employees
  • Information Security
  • Amazon Web Services
  • Security Analysis
  • Linux
  • Mobile App Testing
  • Security Engineering
  • Web Application Security
  • Information Security Audit
  • Python
  • Website Security
  • Ethical Hacking
Pavel O.

Berlin, Germany

$39/hr
4.8
128 jobs

๐Ÿ’ผ Python Developer | Python Django | Python Web Scraping | Python Full Stack Developer | Python AI | Python Automation ๐Ÿ† TOP RATED PLUS | ๐Ÿ’ฐ $5M+ Client Revenue | ๐Ÿ’ผ 111+ Projects Delivered | โœ… 11,000+ Upwork Hours ๐Ÿ’ก Clients Achieved: ๐Ÿš€ Raised $4.9M+ / $9.4M+ / $6M+ after product development ๐Ÿ“ˆ Scaled platforms to millions of users & billions of operations โšก Reduced system load & response time with optimized Python architectures ๐Ÿ’ฐ Automated payments, workflows, and analytics โ†’ higher ROI & efficiency ๐Ÿฅ Built secure, compliant systems (HIPAA, GDPR) used by global organizations I am a Python Developer, Python Full Stack Developer, Python AI Developer, and Python AI Engineer with 10+ years of experience building scalable web platforms, SaaS products, AI systems, and high-performance backend architectures. As a Python Developer, I specialize in designing clean architecture, scalable systems, performance optimization, and production-ready solutions that support real business growth. I work as a Python Full Stack Developer (Python + React / Next.js), combining powerful backend engineering with modern frontend development to deliver complete end-to-end applications. My expertise includes Python Django development, Flask development, and FastAPI development, building robust APIs, microservices, and distributed systems. I am also a Python Automation Engineer and Python Web Scraping Specialist, building intelligent automation systems, data extraction pipelines, and large-scale Python web scraping solutions for business intelligence, analytics, and AI-driven data processing. I design reliable scraping architectures that handle complex, high-volume data at scale. As a Python AI Developer, I build AI-powered applications, NLP systems, automation workflows, and data-driven intelligent platforms integrated with modern Python frameworks and cloud infrastructure. โšก Core Expertise as a Python Developer Python Full Stack Development (Python + React / Next.js) Python Django Developer, Flask Developer, FastAPI Developer Python AI Development & Machine Learning Integration Python Automation Engineering for business workflows Python Web Scraping & Data Extraction Systems Scalable backend systems, APIs, and microservices Cloud & DevOps (AWS, Docker, CI/CD pipelines) High-performance, production-grade Python systems ๐Ÿš€ Selected Projects The Skills ($4.9M raised) ๐ŸŽ“ โ€“ Built and scaled an e-learning platform with payments, subscriptions, and mobile apps. As a Python Developer, helped launch a product used by thousands of users worldwide. Veeqo (acquired by Amazon) ๐Ÿ“ฆ โ€“ Developed retail infrastructure processing ยฃ1B+ in orders. Optimized backend performance, integrated Stripe, and reduced server load using AWS Lambda as a Python Developer. Creyos (75K+ users, healthcare) ๐Ÿฅ โ€“ Built a HIPAA-compliant cognitive assessment platform used by global research institutions. As a Python Developer, worked on secure data systems, scaling, and performance. CityFALCON ($6M raised) ๐Ÿ“Š โ€“ Created a real-time NLP-powered financial news platform processing millions of articles daily. Designed scalable backend architecture as a Python Developer. โšก What I Deliver as a Python Developer Clean, scalable Python AI systems and backend architectures High-performance Python Django / Flask / FastAPI applications Python Full Stack Development (React / Next.js integration) Python Automation & Python Web Scraping solutions AI-powered Python applications and intelligent workflows Secure, compliant systems (GDPR, HIPAA-ready architectures) End-to-end product delivery from idea to production Client Testimonials โญโญโญโญโญ โ€œVery professional! Pleasure to work with. Will definitely use again.โ€ โญโญโญโญโญ โ€œSuper reliable, fast, and with clean, well-structured code. Communication was smooth and always on time.โ€ โญโญโญโญโญ โ€œVery satisfied with the work.โ€ ๐Ÿ’ผ Why Clients Work With Me 10+ years of proven experience as a Python Developer Strong expertise in Python Full Stack, Python AI, and Python Web Scraping Ability to scale systems from MVP to enterprise-level platforms Deep understanding of backend architecture and system design Reliable communication and predictable delivery ๐Ÿš€ Letโ€™s talk about your project - I am available as your Python Developer, Python Full Stack Developer AI React, Python AI Developer, Python Automation Engineer, Python Django Developer, and Python Web Scraping Specialist.

  • API
  • Python
  • Python Script
  • Data Scraping
  • Automation
  • Artificial Intelligence
  • Machine Learning
  • Deep Learning
  • Scripting
  • Data Extraction
  • Chatbot Development
  • FastAPI
  • Back-End Development
  • Django
  • PostgreSQL
  • JavaScript
  • Flask
  • React
  • jQuery
  • Docker

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