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Ivaylo G.
$40/hr
100% Job Success
$200K+ earned
Offers consultations
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Ivaylo G. has worked .
I can't say for sure but I have the impression that very few people (if any) in the IT field have read the "Message to Garcia" by Elbert Hubbard. I have read it and I dare to consider myself one of the people, who are able to "bring the message". There always will be someone who is more creative, knows more or works faster than me. I am aware of that and I accept it. Still, I am quite confident of being a better prepared professional than the average IT guy. I have 20 years of experience in programming, database modelling, system design and architecture, business processes analyses and automation, basic managerial accounting, Linux and network administration, Asterisk (FreePBX) configuration. I have successfully solved various business-related software and hardware challenges. Being able to combine both low-level and high-level allows me to work on wide range of tasks. I have reverse engineered and fully decompiled about a dozen Delphi components and desktop applications. Assembler was my 2nd language (after BASIC) and my first significant application was a player for tracker music entirely written in Assembler - with bass/treble digital filters. I like digging deeper and understanding the root cause. I am quite good at debugging and troubleshooting - and this is not an empty claim. Some of my achievements: - developed 2 full-blown ERPs (for Walltopia and Composite-X) - developed 2 accounting / warehousing applications with OLAP reporting and hierarchical multi-dimensional accounts - developed Windows service daemon for logging Skype chats to a REST API in real-time - ported one large desktop application (Interactive Delphi Reconstructor) from Borland CBuilder to Delphi - implemented a company-wide real-time backup solution using Yadis or Bvckup, Samba and NappIT on OpenIndiana - developed Linux daemon for controlling large LED strips based on WS2811 (and organized into X/Y matrix) through TCP/UDP socket - developed combined CDR reporting, matching information from the local Asterisk PBX with billing information from the VoIP providers - implemented Linux daemon for reading SMDR/CDR data from Panasonic PBX TDA-200 and storing in MySQL with reporting capabilities - developed custom reporting module for a 3rd party security access control system and integrated it with the in-house ERP system I choose my clients as carefully as you choose your freelancers. I value honesty, respect, good communication, good sense of humor, intelligence, modesty, kindness, generosity. I prefer to develop from scratch custom business solutions automating the workflow of small businesses. My previous experience with the 2 ERP systems I already developed (and which are used 24/7 by customers and employees) is of enormous benefit. I feel truly happy when I am able to help a client by removing the burden and simplifying the workflow. What can you expect from me: - educating and explaining the things which are too technical and unfamiliar to you - asking good questions - providing meaningful advises and recommendations - not trying to suck additional money by finding extra work of low business value - understanding your real business needs and goals - keeping you from making worthless or unwise expenses - excellent responsiveness - taking precautions against damaging your data - really listening to you and your problems/pain points - acknowledging my faults - enjoying good jokes - not quietly disappearing after faced with some tough challenge - honestly admitting when I do not know something or not being qualified enough - not over-complicating the solution - being available for support and further assistance after the final deployment - solving difficult problems - positive skepticism - breadth of knowledge - ability to “finish” - introspective, self-motivated to constantly improve - perseverance, scrappy in the face of setbacks, doesn’t “get blocked” - systems design ability - empathy for users - taking pains to write readable and maintainable code - methodical and analytical: can diagnose the most mysterious bugs or find the source of performance bottlenecks
$75/hr
100% Job Success
Available now
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Hi! I've only been on upwork for a couple years now, but come with a ton of experience from solving complex technical issues for over 20 years. With a strong engineering background on top of a solid understanding of which processes, tools, and strategic approaches need to be applied to each new project, I'm able to hit the ground running and provide measurable results backed up by data. The skillsets I've acquired are relevant to the needs of modern digital marketing, from programming website backends to designing ecommerce flow for maximum purchase conversion, to visual design and search engine optimization. I also know when to bring in an outside expert, and provide quality control on the work that they provide so as to maintain maximum success in all cases. My skillsets include: - CSS, PHP, HTML - Search Engine Optimization / SEO - Search Engine Marketing / SEM (AdWords and other pay-per-click marketing) - Linux shell programming (bash, csh, sh) - SSH, IPtables, Putty, Key-based authentication - Perl programming - Ecommerce portal configuration & troubleshooting (woocommerce, shopify, volusion, resmark, checkfront) - Web hosting & configurations with cPanel, WHM - VPS server provisioning, configuration, & API programming - AWS, Linode, Digital Ocean, Azure, Google Cloud Platform, Binary Lane, Oracle Cloud, IBM Cloud - System administration & security updates & maintenance for WordPress sites - Linux system administration - Web UI/UX evaluation ... And lots more. If it's something I haven't listed, please ask and I'll give an honest answer so you can be confident in what I can provide.
Lionel P.
$45/hr
100% Job Success
$20K+ earned
Available now
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Lionel P. has worked .
💡 22 Years of Expertise Across Diverse Technologies, Industries & Marketing Channels 🔍 About Me I’m an accomplished Software Engineer, Developer, and Solutions Architect with extensive experience across multiple programming languages, frameworks, and industries — combining strong technical depth with strategic marketing and SEO expertise to deliver solutions that perform and grow. My career spans over two decades, giving me a rare ability to bridge technology and business — ensuring every system, app, or website I build is optimized for performance, scalability, and discoverability. 🛠 Areas of Expertise ✅ Programming Languages: C, C++, Objective-C, C#, Java, Erlang, VB, ASP, ASP.NET, Perl, Python, PHP, Rust ✅ Frameworks & Technologies: Spring Boot, Laravel, Django, React, React Native, Next.js, Node.js, Xamarin/MAUI, JHipster ✅ Specialties: 🌐 Web Development: WordPress, React/Next.js, Express.js, Laravel, Django, JHipster, Spring, .NET 📱 Mobile Development: Android, iOS, Xamarin/MAUI, React Native 🎮 Game Development: Unreal Engine, Unity, C4 Engine, CryEngine, MonoGame ⛓ Blockchain Development: Solidity/Ethereum, Solana, EOS, TRON ☁️ Cloud Services: AWS, Azure, Google Cloud, Alibaba Cloud 🌍 International Marketing: US, Canada, UK, Australia, Africa & China 📌 Specific Industries: Real Estate, Hospitality, Technology, Blockchain 🌟 Solutions Architecture & System Administration: Windows, Linux, macOS 📈 Digital Marketing Expertise: - Search Engine Optimization (SEO) – Technical SEO, On-Page, Core Web Vitals, Schema - Search Engine Marketing (SEM) – Google Ads, Bing Ads, Baidu, and Social Campaigns - Content Marketing – Strategy, Keyword Research, Content Frameworks, and Funnel Design - eCommerce & Lead Generation – Conversion Optimization, Tracking, and Analytics 🎓 Certifications: - AWS Developer Associate - AWS Solutions Architect Associate - Microsoft Certified Technology Specialist - Google Ads Search Certification 🏅 Awards: Top 5 BlackBerry Developer Award – Research in Motion (2009) 📂 Specialized Expertise 🏠 MLS/IDX Integration & RESO APIs 🔒 Application Security & Data Protection 🏖 Real Estate & Travel Websites 💼 International Business & Cross-Market Strategy ⚙ Software Experience C++, C, C#, ASP.NET, Blazor, Java, PHP, Erlang/OTP, Python, Pascal, Assembly (x86, ARM64), DynamoDB, PostgreSQL, MySQL, MSSQL, MongoDB, React, Next.js, Laravel, Moodle, WordPress, Unreal Engine, Unity, and many more. ✨ Let’s Connect Whether you’re launching a new app, improving SEO visibility, or scaling a complex system, I bring 22 years of engineering excellence and real-world marketing insight to help your project succeed from concept to completion. Let’s build something exceptional together!
$100/hr
100% Job Success
$20K+ earned
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Geno C. has worked .
I've been working with technology since 1992 in both software development and network infrastructure positions. I started as a developer and have focused on building custom financial, inventory, and workflow software for employers and customers. I have also worked in technology infrastructure positions such as network and IT management. I built my first web server in 1995 and almost immediately built my first web program using a C language CGI program. Since then I have used almost every server-side web development platform: Perl and Python CGI, fast CGI, Zope, Django and Flask with Python, ASP.Net, Node.js, and most recently Deno. Client-side, I've used Javascript (since before it was popular), spent many years using JQuery, then Knockout.js. I have used many of the popular front-end environments today, primarily Angular and Vue.js. In addition to web-based work, I have developed a number of service applications for customers, normally Windows-based services in .Net. This has allowed me to leverage my knowledge of different databases and network environments to build custom-tailored solutions to fit many diverse needs. I have also done numerous large-scale document and data conversion projects for many document imaging systems. These involve careful planning, understanding and mapping data between systems, document format conversions, and meticulous record-keeping.
Junaid  A.
$20/hr
100% Job Success
$10K+ earned
Available now
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I’m a Full Stack AI Developer specializing in Python, AI/LLM applications, SaaS development, APIs, automation, and cloud deployment. I combine strong backend engineering with modern frontend development and AI technologies to build reliable products that are designed to scale. 🤖 AI & Generative AI I build practical AI solutions using modern LLM technologies, including: • AI Agents & Agentic Workflows • Custom AI Chatbots & Assistants • RAG (Retrieval-Augmented Generation) applications • LLM-powered SaaS products • AI workflow & business process automation • OpenAI & Claude API integrations • AI APIs and intelligent backend systems • Vector databases & semantic search • AI MVPs and rapid prototypes • Custom AI integrations for existing applications 🐍 Python Backend & APIs Python is my primary development stack. I build secure, maintainable and scalable backend systems using: • FastAPI • Django • Flask • SQLAlchemy • REST APIs • Async Python • Authentication & authorization • Third-party API integrations • Background jobs & task processing 💻 Full Stack & SaaS Development I can build complete SaaS products rather than just individual features: • React / Next.js applications • JavaScript / TypeScript • Responsive UI development • SaaS dashboards & admin panels • User authentication & subscription systems • Payment integrations • Multi-tenant SaaS architecture • Backend/frontend API integration • Database design and optimization 🗄️ Databases & Data I work with both SQL and NoSQL databases, including: • PostgreSQL • MySQL • MongoDB • Redis • Vector databases • Database architecture, optimization and integration ☁️ Cloud, DevOps & Deployment I also handle the infrastructure required to take applications from development to production: • AWS • Docker • Kubernetes • CI/CD • Linux • Cloud deployment • Application monitoring • Production optimization 🎯 What I can build for you Whether you need an AI MVP, SaaS platform, AI agent, chatbot, automation system, REST API, or complete web application, I can help with the entire development lifecycle. Typical projects include: → AI-powered SaaS platforms → Custom ChatGPT/Claude-style applications → AI agents and workflow automation → RAG & knowledge-base systems → Business process automation → AI integrations into existing products → Python/FastAPI/Django backends → React/Next.js frontends → SaaS MVP development → API development & integrations → Cloud deployment and DevOps Why work with me? I focus on more than simply writing code. I care about architecture, scalability, security, performance, maintainability, and business objectives. My goal is to turn your requirements into a production-ready solution without unnecessary complexity. If you already have a detailed specification, an existing application that needs improvement, or simply an idea that you want to validate and build, send me a message. I'm also happy to discuss your project in a free consultation call and help you determine the best technical approach. Let’s build something valuable. 🚀
$24/hr
100% Job Success
$500+ earned
Offers consultations
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Entire lifecycle of business software development - req engineering thru support. 20+ years of experience in IT covering many industries like Energy & Utilities, Retail, Finance. Quick & self learner - learn and be productive in short time with little or no hand holding Good communication skills.
Jason M.
$95/hr
95% Job Success
$200K+ earned
Available now
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Jason M. has worked .
🚀 🥇 Expert-Vetted | Hands-On AI/ML Engineer | I Build LLM Apps, RAG Systems & AI Agents (MCP, LangGraph) | Python, AWS, GCP, Azure | Healthcare & FinTech 👁‍🗨 Overview I build and ship production AI systems myself, end to end. No handoffs, no delegation: I design the architecture, write the code, and stay on it until it is deployed, monitored, and generating ROI. I bring 15+ years of hands-on AI/ML engineering, a PhD in Machine Learning from Iowa State University, and a Master's in Computational Neuroscience from UC San Diego. ✅ What I Build: • LLM Applications: RAG pipelines, chatbots and copilots, document AI, semantic search, structured data extraction • AI Agents: Multi-agent systems, MCP (Model Context Protocol) tool integrations, LangGraph orchestration, function/tool calling, agentic workflow automation • Model Customization: Fine-tuning (LoRA/QLoRA, RLHF/DPO), prompt optimization, evals and guardrails, open-weight model serving (vLLM) • Healthcare AI: Clinical trial automation, medical document generation, HIPAA-compliant systems • Full-Stack AI Products: Python/FastAPI backends, React frontends, Kubernetes, CI/CD across AWS, GCP, Azure 🎯 Recent Hands-On Builds: • Engineered a clinical trial intelligence system for enterprise pharma: ingested, embedded, and indexed 100K+ trials with multi-index, multi-LLM RAG and advanced PDF parsing, powering Q&A, chat, and benchmarking • Built a GenAI product that drafts 100+ page regulatory clinical trial protocols (95% of the full M11 document), with multi-agent validation, consistency, and styling checks • Coded and deployed an ICD-10 billing code prediction model on GCP and an EHR-integrated physician sidebar on AWS EKS • Rescued a failing third-party ML platform, refactored it, and took it to production on AWS at ResMed (NYSE: RMD), enabling their first commercial AI healthcare product • Built ML-powered ad targeting and recommendation systems generating $100K+/month, plus AI products earning $1M+ revenue in year one 💼 Industry Expertise: • Healthcare/Pharma: Clinical trials, EHR API integration, medical AI, FDA-regulated software • FinTech: Real-time fraud detection, card-linked platforms, transactional APIs (MasterCard and Visa partnerships) • Enterprise SaaS and Retail/E-commerce: Multi-tenant APIs, recommendation engines, customer analytics 🔧 Technical Stack: AI/ML: GPT-5, Claude, Gemini, Llama, DeepSeek, Qwen; fine-tuning (LoRA/QLoRA, PEFT, RLHF/DPO); RAG and GraphRAG, hybrid search, rerankers, embeddings Agents: MCP, LangGraph, LangChain, LlamaIndex, CrewAI, OpenAI Agents SDK, structured outputs, tool calling Languages: Python, TypeScript/JavaScript, SQL, Java, Go Frameworks: PyTorch, Hugging Face, FastAPI, React, TensorFlow, Scikit-learn Serving & MLOps: vLLM, Ollama, AWS (SageMaker, Lambda, ECS/EKS), GCP (Vertex AI), Azure AI Foundry, Kubernetes, Docker, MLflow, Weights & Biases Evals & Observability: LangSmith, Langfuse, RAGAS, guardrails, LLM cost optimization Databases: PostgreSQL/pgvector, Pinecone, Qdrant, Weaviate, ChromaDB, Elasticsearch, MongoDB, Redis 📊 Quantifiable Impact: • 100K+ clinical trials processed, indexed, and made queryable for enterprise users • 100+ page medical documents generated with regulatory compliance • 94% accuracy in crisis detection and 73% engagement increase for a nonprofit youth chatbot • 10X subscriber growth driven by models I built and deployed • $100K+/month revenue from ML-powered ad targeting 🎓 Credentials: • PhD, Machine Learning (Iowa State University); M.Sci., Computational Neuroscience (UC San Diego) • IBM Certified: RAG and Agentic AI; Deep Learning Specialization (Coursera) • Published AI/ML researcher (Psychological Science, ICSE); 4 provisional patents in AI/computer vision 🌟 What Sets Me Apart: I am senior, and I still write the code. On every engagement you get one engineer doing the actual work: architecting, coding, testing, deploying, documenting. Because I have built AI in regulated healthcare and fintech environments, compliance, evals, and monitoring are baked in from day one rather than bolted on. My neuroscience background shapes how I build AI systems that genuinely understand human behavior and needs. 🤝 Working With Me: You work directly with me, and I personally do the work. Expect working code early (usually in the first week), frequent demos, clear async communication, and clean documentation at handover. US-based in San Diego (Pacific time), available for both short sprints and long-term builds. Have an AI feature or product that needs to get built? Send me the details and I will reply with exactly how I would build it.
Shobi K.
$10/hr
100% Job Success
$100K+ earned
Offers consultations
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Shobi K. has worked .
✅ Experienced (17+) ✅ Certified ✅ 100% Job Success, ✅Top Rated, ✅free Consulations I'm a result-oriented self-motivated charismatic leader with strong organizational and prioritization abilities. Worked in outsourcing (custom software development) in the following domains: e-commerce, social networks, blockchain, insurance, finance, telecommunication, electronic document management systems, RPA (robotic process automation), ERP, AI, Healthcare, IoT, DATA Science, Cyber Security, Security Audit, Supply chain, Real Estate, Blockchain-based identifiers, Blockchain-based healthcare system. Summary - Leading in IT since 2010 - Managing up to 100+ developers (distributed and on-site teams) - General MCA, Blockchain Course 🏆- Certified Enterprise Architect 🏆Blockchain Certified 🏆Agile Certified 🏆Scrum Certified 🏆Project management Certified 🏆Leadership Certified 🏆Communication Certified 🏆 Many other 22+ Certified. Achievements 🥇Enterprise Architecture solutions for more than 50+ projects 🥇Service-oriented company SPEQTO TECHNOLOGIES with more than 6+ Top MNCs experience such as HPE, Docomo, Wipro, Airtel & Avaya as former employee history. 🥇Custom grade-based motivation system for IT specialists I focus on building teams and projects from scratch, introducing software development processes and best practices. At the same time, I dedicate on tasks related to performance optimizations, refactoring and implementing various algorithms. Quick snapshot of my skills: ● Engineering and technical skills ● Programming languages (Node JS, Kotlin, Go, JavaScript, python, Php, Swift, Objective C, Solidity, Rust, React JS, Nest JS, Vue JS, Go Lang) ● Cloud DevOps (Azure, GKE, AWS) - Services & Build Pipelines ● Delivery Management ● Strategic Management ● Performance Management ● Risk Management My core specialization lies in-: 1. Smart contracts 2. Devising custom Blockchain solutions on private/public Blockchains 3. Decentralized applications 4. Setting up of Blockchain architecture 5. NFT Marketplace development 6. Smart Contract audit 7. End to End DApps development 8. Blockchain Consultancy Blockchain Development Services We Offer: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ Being a full-stack blockchain developer & solidity programmer and associated with an ISO certified blockchain development company, I develop rapid, error-free website & web applications to achieve an enterprise's functionality implementation and business logic with minimum complexities ✅ Custom Blockchain Development ✅ Smart Contracts Development ✅ DApp Development ✅ Crowd sale ✅ Hyperledger & Multichain Development ✅ Multichain/Supply Chain Development ✅ Custom Cryptocurrency Development ✅ Crypto App Development ✅ ICO Web Development ✅ POC Development ✅ Cryptocurrency Wallet and Exchange Applications ✅ Private Blockchain Development ✅ Blockchain Consulting ✅ Blockchain Testing ✅ Ongoing Blockchain Development Support and Maintenance ✅ Full-Stack Blockchain Development ✅ Full-Time Dedicated Blockchain Developer Tech Skills: My Skills: • Ethereum • Solidity • Web3.js • NodeJS • React JS • Python • Django • Hyperledger Fabric • R3 Corda • Quorum • JavaScript • jQuery 8+ years’ Experience + NodeJS + Microservices + React JS + Stencil JS + Blockchain (Ethereum + Solidity + DApp + Smart Contracts + Truffle + web3.js + ether.js + NFT + Open sea) My Technical Blockchain Development Expertise: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ Being a full stack blockchain developer, I have decent expertise in Blockchain development and custom smart contract application development technologies: ✅ Server-Side Languages: PHP, Node JS, Java, Spring boot, Microservice ✅ Frameworks: Express JS, YII2, Laravel, Cake PHP ✅ JavaScript Frameworks: Angular JS, jQuery, React JS, Vue JS, Nest JS, Jade JS ✅ Smart contract language: Solidity ✅ Data Management: • RDBMS: MySQL 5.X, PostgreSQL, Amazon RDS • NoSQL: MongoDB. • Caching: Memcached, Redis • Searching: Solr, Lucene, Elasticsearch, Amazon CloudSearch ✅ Queue: ActiveMQ, Amazon SQS ✅ Server Technologies: Linux, Ubuntu ✅ Cloud Computing Platforms: Amazon Web Services ✅ Frontend Stack: • Languages: HTML5, CSS3, Sass, JavaScript • UI Frameworks: Bootstrap, jQuery UI • JavaScript Frameworks: React, Backbone.js, Angular 2 ✅ Third-Party APIs Integration: • Payment Gateway: PayPal, Stripe, Authorize.Net, Coinpayments.net • Social: Facebook, Twitter, Google+ • Geo-location: Google Maps, Bing Maps • File Storage: Dropbox, Google Drive Supported Standards: 1. ERC-20 - Standard tokens 2. ERC-998 - Composable Tokens 3. ERC-721 - NFTs 4. ERC-1155 - NFTs 5. On-Chain NFTS Supported Networks: 1. ETHEREUM 2. SOLANA 3. POLYGON/MATIC 4. BSC 5. AVALANCHE 6. FANTOM 7. Base Chain 8. Cardano I can be your technical, strategic, marketing, and product advisor and consultant to help your company or business learn more about the NFT space and answer any questions you might have about the industry and trends.
Speqto Technologies Pvt Ltd.
Associated with
Speqto Technologies Pvt Ltd.
$200K+
earned
Abhishek P.
$50/hr
100% Job Success
$200K+ earned
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Hi, I’m a Top Rated Python Developer with over 15 years of experience building scalable, efficient, and AI-driven solutions for global clients. I specialize in automation, machine learning, and IoT, delivering clean, production-ready code that solves real business problems. I’ve completed 45+ Upwork projects and served over 100 global clients, helping them: Build robust APIs and microservices Automate complex workflows and data pipelines Integrate AI/ML models into real-world applications Develop scalable IoT systems and smart dashboards My Expertise: AI & ML: Scikit-learn, PyTorch, TensorFlow, NLP, Deep Learning, Predictive Modeling Web & API Development: Flask, Django, FastAPI, REST, GraphQL Automation & Scraping: Selenium, Scrapy, BeautifulSoup, Puppeteer DevOps & Deployment: Docker, CI/CD, AWS, DigitalOcean, Serverless IoT & Edge Computing: MQTT, Industrial IoT, Smart Systems, Kafka Bots & Custom Tools: Telegram, Discord Bots, Zapier, Gradio Interfaces Data Handling: Pandas, NumPy, PostgreSQL, MongoDB, Redis Why Choose Me? Over 15 years of experience in Python & backend systems Excellent communication — quick responses & clear updates Committed to high-quality, maintainable code Collaborative approach focused on solving your business challenges Proactive, adaptable, and always learning Let’s discuss how I can bring your vision to life with intelligent code and reliable systems. Tools & Technologies I Use: Python, Flask, Django, FastAPI, TensorFlow, PyTorch, Scikit-learn, Selenium, NumPy, Pandas, REST APIs, GraphQL, Docker, Celery, Redis, PostgreSQL, MongoDB, AWS, GCP, DigitalOcean, Zapier, Kafka, MQTT, Gradio, Streamlit, OpenCV, HuggingFace, OpenAI, Git, CI/CD, Prometheus, Grafana.
Chetna V.
$40/hr
100% Job Success
Available now
Offers consultations
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Chetna V. has worked .
Senior Full-Stack PHP & Python Developer | Laravel · WordPress · React · Shopify · REST APIs · SaaS · DevOps | 11+ Years I'm a Senior Full-Stack PHP & Python Developer with 11+ years of hands-on experience delivering scalable web applications, SaaS platforms, and API-driven solutions across a wide range of industries. Owning every stage of the software lifecycle from architecture and development through to deployment, maintenance, and client communication. TECHNICAL SKILLS Backend PHP 8.x, Laravel 10/11, CodeIgniter, Slim Framework, Symfony, Core PHP, Node.js (Express), REST APIs, GraphQL, Web Services, ORM (Eloquent, RedBeanPHP) Frontend HTML5, CSS3, JavaScript (ES6+), TypeScript, jQuery, Alpine.js, Angular, Bootstrap, Tailwind CSS, AJAX, Responsive Design Databases MySQL, PostgreSQL, MongoDB, SQLite, Redis — including schema design, query optimization, and indexing Cloud & DevOps AWS (EC2, RDS, S3, Elastic Search, Elastic Transcoder, LightSail), Google Cloud, Heroku, Docker, GitLab CI/CD, GitHub Actions, Linux (Ubuntu/Debian), Nginx, Apache, LAMP Stack CMS & E-Commerce WordPress, Elementor Pro, WooCommerce, Shopify, Magento, PrestaShop, Joomla Payment Gateways Stripe (Connect, Subscriptions, Webhooks), PayPal Commerce Platform, Braintree Third-Party Integrations SendGrid, Twilio, Mandrill, Facebook Pixel, Google Maps API, Geolocation/GPS, Push Notifications, Social OAuth (Facebook, Google, LinkedIn, Instagram, Twitter/X) Version Control & Tools Git, GitLab, GitHub, Bitbucket, Scrum/Agile, Taiga, Jira, Trello, Asana WHAT I DELIVER ✔ End-to-end development of SaaS platforms, marketplaces, and business web applications ✔ RESTful API design, development, and third-party integration ✔ Mobile app backends (Android & iOS) ✔ Payment gateway integration and subscription billing logic ✔ Server setup, cloud deployment, and ongoing infrastructure management ✔ Performance optimization, caching strategies, and database tuning ✔ Bug fixing, code refactoring, and long-term maintenance ✔ Clear communication, reliable timelines, and full post-delivery support I bring senior-level technical depth combined with the reliability and ownership mindset of someone who runs their own production systems every day. Whether you need a new platform built from scratch, an existing codebase taken over, or a complex integration shipped fast — I'm ready to get to work.