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Hello 👋 🔥 𝗜’𝗠 𝗧𝗢𝗣 𝟭𝟬% 𝗣𝘆𝘁𝗵𝗼𝗻 & 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | Python Developer | 10+ Years Building Scalable Products 💻⚡ From startup MVPs to enterprise platforms, I help companies build, scale, optimize, and launch reliable web applications fast. I work as a Full Stack Developer and Python Developer across both frontend and backend systems, designing products from scratch, improving legacy platforms, integrating APIs, and scaling architecture for long-term growth. In backend-heavy systems, I act primarily as a Python Developer and Node.js Developer, while on client-facing interfaces I operate as a React Developer and JavaScript Developer. As a Full Stack Developer and Python Developer, I worked in startup environments, Big Tech companies, and enterprise teams, collaborating in international English-speaking settings. I followed structured workflows using Jira, Kanban boards, sprint planning, and code review processes where a Node.js Developer and Python Developer often share backend responsibilities depending on service boundaries. I have 10+ years of experience as a Python Developer, working deeply with Python for backend systems, automation, and data pipelines. In parallel, I have 7+ years of experience as a Node.js Developer building scalable APIs and real-time services. On the frontend side, I have 5+ years of experience as a React Developer and JavaScript Developer building modern UI systems. During my career as a Full Stack Developer and Python Developer, I’ve implemented 200+ REST APIs and integrations across payment systems, messaging APIs, and AI services. Many of these were split between Node.js Developer services for real-time workloads and Python Developer services for data processing and ML pipelines. Primary stack: Python (FastAPI, Django, DRF), Node.js (Express, NestJS), TypeScript, JavaScript Developer, React Developer, Next.js, PostgreSQL, MongoDB, Redis, Supabase. In practice, this means I switch between Python Developer roles for backend intelligence layers and Node.js Developer roles for event-driven systems and APIs, while React Developer and JavaScript Developer responsibilities cover frontend architecture and UI delivery. Over the last 10+ years as a Full Stack Developer and Python Developer, I’ve built SaaS products, automation systems, AI platforms, and analytics engines. These systems typically combine Python Developer services for processing and Node.js Developer services for orchestration, with React Developer dashboards and JavaScript Developer frontends. My main focus today as a Python Developer and Full Stack Developer is AI engineering, backend architecture, and scalable systems. I design RAG pipelines, LLM integrations, and automation workflows where Python Developer components handle computation-heavy logic and Node.js Developer services manage API orchestration. I have experience as a Python Developer running asynchronous workers processing 10K+ background jobs daily, and as a Node.js Developer building event-driven microservices for high-throughput systems. On the frontend, as a React Developer and JavaScript Developer, I build dashboards, admin panels, and product interfaces. As a Full Stack Developer and Python Developer, I take ownership of both backend and frontend architecture, including APIs, databases, authentication systems, and performance-critical applications. In most systems I’ve delivered, the backend is split between Python Developer services and Node.js Developer services, while the frontend is handled with React Developer and JavaScript Developer stacks. One thing that separates me is that I understand both production engineering and AI-generated code risks. As a Python Developer and Node.js Developer, I regularly review and refactor AI-generated backend logic to ensure stability, while as a React Developer and JavaScript Developer I ensure UI logic stays maintainable and scalable. I don’t just generate code quickly. As a Full Stack Developer, Python Developer, Node.js Developer, React Developer, and JavaScript Developer, I build systems that remain stable under scale and long-term maintenance pressure. As a Senior Full Stack Developer and Python Developer, I care about clean architecture, fast delivery, and systems that don’t collapse under growth.

👋 Hi, I’m Oleksii - a Twilio expert with over 7 years of hands-on experience building scalable, real-time communication systems using the full Twilio stack: 📞 Programmable Voice / SMS, 🧠 TaskRouter & Flex, 🎛️ Studio, Functions, Conversations, Sync, Webhooks and more. I’ve successfully completed 120+ Twilio projects on Upwork, including: • Eliminating latency issues in phone calls 🔧 • Creating SMS marketing automation pipelines 📲 • Developing full-scale Flex dashboards with custom workflows 🧩 Clients describe me as: “Very skilled, excellent communicator, smart guy and a pleasure to deal with.” “Oleksii was very helpful and available :) We no longer have problems with latency during our phone calls.” 🛠 Whether you need help with: • Twilio Studio call flows • Complex webhook-based automation • TwiML, IVR, call forwarding setups • Integrating Twilio with CRMs or internal systems • Building voice/SMS logic in Node.js, Laravel, or Firebase environments …I’ve got you covered. Let’s bring your Twilio-powered solution to life 🚀 Feel free to invite me to your job or message me with questions.

Looking for a skilled Full-stack Developer with expertise in Python, Django, FastAPI, and React?🌟 I specialize in delivering high-performance web applications, combining the power of Python frameworks like Django and FastAPI with modern frontend technologies such as React. I’m also passionate about integrating AI & ML solutions, creating intelligent systems that drive innovation and solve real-world problems efficiently. 🌟 Quick Overview ✔ Developed 15+ projects with a strong focus on delivering value and improving business processes. ✔ Created high-performance web apps using Django, FastAPI, React, Next.js, and JavaScript, ensuring smooth user experiences. ✔ Integrated PostgreSQL & SQL (ORM) databases, optimizing data handling and performance. ✔ Led the development of secure APIs with thousands of active users, ensuring reliability and scalability. 🔧 Key Skills & Technologies ✔Backend Development: Django, FastAPI, Python (Django DRF, SQL (ORM)), building fast and secure server-side APIs. ✔Frontend Development: React.js, Next.js, JavaScript, creating seamless, responsive, and dynamic user interfaces. ✔ Database Management: PostgreSQL, MySQL, SQLite, with a focus on high performance and scalability. ✔ Version Control & CI/CD: Git, GitHub, GitLab, automating deployment processes for faster time-to-market. ✔AI & ML Expertise: Proficient in machine learning frameworks such as TensorFlow, PyTorch, and Keras, enabling AI-driven solutions to enhance your business. 💼 Industry Experience I’ve built custom solutions across multiple industries, including: Fintech: Scalable financial platforms with real-time data processing. E-commerce: Integrated payment systems and optimized inventory management. Healthcare: HIPAA-compliant patient management systems and telemedicine solutions. Logistics: Real-time tracking systems and fleet management tools. TravelTech: Customized booking systems and travel management solutions. Stop Waiting, Let’s Start Building! If you’re looking for a reliable, results-driven developer who can transform your ideas into reality, let’s connect! I’m ready to collaborate and bring your vision to life with clean, scalable code and exceptional performance. Find me with the keywords below: API, Python, JavaScript, Django, FastAPI, React, Next.js, Web Development, Full-Stack Development, PostgreSQL, SQL, RESTful API, Git, Docker, CI/CD, API Integration, React Hooks, Unit Testing, Web Application, React.js, SaaS, Automation, Backend, Frontend.

🚀 iOS Developer | Swift, SwiftUI & Native Mobile App Development I help startups and businesses build, improve, and maintain production iOS apps used by real users. As an iOS Developer with 9+ years of experience in Mobile App Development, I specialize in native iOS applications built with Swift, SwiftUI, UIKit, and Objective-C. I work on real production systems - not just prototypes - with a strong focus on stability, performance, maintainability, and smooth user experience. Most of my work involves: ✔️ Building native iOS apps from scratch ✔️ Improving and maintaining existing apps ✔️ Fixing crashes, bugs, and unstable behavior ✔️ Refactoring legacy UIKit / Objective-C codebases ✔️ Migrating apps to SwiftUI ✔️ Performance optimization & debugging ✔️ API integrations, subscriptions & push notifications 💡 Why clients work with me ✅ Native iOS Developer focused exclusively on Apple platforms ✅ Strong experience with large and legacy codebases ✅ Production-focused Mobile App Development ✅ Clean, scalable, and maintainable architecture ✅ Fast iteration using AI-assisted development workflows ✅ Reliable communication and long-term support I’m comfortable working on both MVPs and long-term products, including apps with complex business logic, real-time features, offline-first architecture, and App Store releases. If you need an iOS Developer who can build, fix, or improve a reliable iOS app - let’s connect.

I build production-grade web applications, APIs, and ERP/CRM systems — from architecture to deployment. My work spans full-stack development, database design, Telegram bot backends, and Odoo customization, with recent projects involving AI integration, ML pipelines, and encrypted infrastructure on AWS. What I deliver Full-stack web applications (React/TypeScript frontend + Laravel or Python backend) REST API design, OAuth 2.0 + PKCE, role-based access control Database architecture and optimization — PostgreSQL, MySQL Odoo ERP/CRM: custom modules, QWeb templates, workflow automation, Telegram bot integrations (v16–v18) Telegram bots with backend logic and database integration AI/ML feature integration — model deployment, automation pipelines, intelligent assistants Server setup and DevOps — AWS EC2, Docker, Nginx, Linux administration Recent projects AI CRM Analytics Platform (SaaS, multi-tenant) Built a production-ready AI-powered CRM analytics platform from scratch. Sales teams connect HubSpot, Salesforce, or Pipedrive and query their live pipeline data in plain English — the AI responds using synced, up-to-date CRM data. OAuth 2.0 + PKCE integrations for 3 CRM providers Auto-sync every 15 min via BullMQ/Redis job queue GPT-4o query layer with intent classification and self-learning user memory Full CRM dashboard: contacts, deals, pipeline kanban, deal canvas, calendar Multi-tenant architecture on Supabase/PostgreSQL, deployed on Railway Encrypted CRM on AWS Secure hacker/terminal-aesthetic CRM with field-level encryption (PBKDF2-HMAC-SHA256), LUKS2-encrypted EBS volume, JWT session revocation with IP binding, Dead Man's Switch, and Twilio SMS/voice integration — deployed on AWS EC2. Odoo Custom Modules (v18) Telegram Bot API integration, custom QWeb print templates, insurance broker management module — built as portfolio deliverables with full documentation. Tech stack Backend: Python, PHP (Laravel), C#, Java Frontend: React, TypeScript, JavaScript, HTML/CSS Databases: PostgreSQL, MySQL Infrastructure: AWS EC2, Docker, Nginx, Linux ERP/CRM: Odoo v16–v19 Other: Telegram Bot API, BullMQ/Redis, GPT-4o, ML model integration, REST APIs Working style I take on projects where technical decisions matter — where someone needs a developer who understands business logic, can own the architecture, and delivers without hand-holding. I prefer clearly scoped work and direct communication. Available for long-term collaboration or well-defined project contracts.

AI Developer Top-rated Plus (Upwork Top 1%) AI Agents, Generative AI & Full Stack Development I help companies as AI Developer design, validate, and ship AI products fast, with a strong focus on AI Agents, Generative AI, and proAI Developer (Upwork Top 1%) AI Agents, Generative AI & Full Stack Development 8+ Years in AI & Machine Learning — production systems, not prototypes 50+ AI Products Delivered — from MVP to enterprise scale Top 1% AI Developer on Upwork AI MVPs shipped in 4–8 weeks — structured delivery, no overengineering HIPAA / SOC2 / GDPR-ready AI systems Full-cycle delivery — architecture, development, deployment, and optimization Trusted by teams in Healthcare, FinTech, Logistics, Real Estate, and E-commerce As a Senior AI Developer and Full Stack Software Engineer, I build production-ready Generative AI applications, custom AI Agents, and scalable machine learning systems. With 8+ years in Machine Learning and software architecture, I work as an AI Developer, AI Engineer, and Full Stack Developer. Together with Indeema, a full-cycle AI and custom software company, I lead teams that turn AI strategy into deployed systems, from data pipelines and LLM orchestration to scalable backend architecture and enterprise integrations. Proven track record with a 100% Job Success Score Consistently earning 5★ client feedback 8+ years building production-ready AI systems Clean, scalable, and enterprise-grade architecture From idea to deployed MVP in 4–8 weeks My structured delivery approach takes products from idea to working MVP in 4–8 weeks. AI Agent Consulting & Delivery I consult and implement agentic AI systems that observe, reason, and act across business workflows: AI Agents & Autonomous Workflows LLM-powered Products and Copilots RAG Systems and Knowledge AI AI Orchestration Architectures AI Integration into existing platforms AI MVP validation and architecture design My approach combines strategy, architecture, and delivery helping companies avoid costly overengineering and ship production-ready AI faster. What I Deliver AI Agent for Document Management AI Agent for Real Estate AI Agent for Inventory Management AI Agent for Fintech and Financial Management AI Agent for Medical Clinics and Image Analysis AI System for Advanced Analytics Agentic AI System Design Generative AI Development Machine Learning and Predictive Analytics AI App Development and Automation NLP, Computer Vision, and Data Science Enterprise AI Integration and Modernization I work across Healthcare, FinTech, Logistics, Real Estate, and E-commerce, building systems that improve operations, reduce manual work, and unlock new revenue streams. AI MVPs in 4–8 weeks using a structured delivery methodology HIPAA / SOC2 / GDPR-ready solutions AI integration with ERP, CRM, and legacy systems Dedicated AI teams and fractional CTO leadership ⚙️ Technologies Python, TensorFlow, PyTorch, LangChain, LLM APIs (OpenAI, Claude, Gemini), AWS SageMaker, Vertex AI, Docker, Kubernetes, MLOps pipelines, vector databases, real-time AI systems. If you’re looking for a partner who can design the right AI solution and actually ship it, let’s talk.