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Roman O.
$55/hr
100% Job Success
$500K+ earned
Available now
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Send your architecture for a free code review! I’m a Senior Full Stack Developer & Software Architect with 20+ years in custom software development. I use modern engineering strategies to build high-performance, enterprise-grade platforms. 🎯 What I bring to your brand as a Senior Full Stack Developer: ✔️ Over 20 years of commercial software engineering experience, leading .NET framework, C# development, and Node.js architectures for global enterprises. ✔️ Results-focused Full Stack Development: As a .NET Expert, I create scalable microservices architectures and API development plans that boost performance and handle high user concurrency. As a Software Architect, I ensure your custom software development is always ROI-driven and infinitely scalable. ✔️ Technical & Architecture Audit Mastery: As a Senior Full Stack Developer, I develop a detailed code audit, database audit, and technical architecture audit to map out your system structure. My cloud infrastructure expertise allows me to refine backend systems before scaling. I’ve delivered 150+ architecture audits and system performance reports, helping streamline software development workflows. ✔️ API Integration & Webhooks Expertise: As an API Specialist and backend developer, I prioritize REST APIs, GraphQL, and third-party integrations. My approach as a Software Architect focuses on secure authentication, OAuth2, and custom API architecture. ✔️ Frontend & Modern UI Solutions: As a Senior Full Stack Developer, I use React.js development and Vue.js optimization for high-performing user interfaces. As a .NET Expert, I handle Angular setups, UI component architecture, and frontend-to-backend integration to ensure your web application performs flawlessly. ✔️ Cloud Deployment & CI/CD Innovation: As an Azure developer and DevOps consultant, I use Docker containerization, Azure App Services, and Azure Functions to scale deployments. ✔️ Database & Performance Optimization: I am a database specialist and SQL Server developer. My technical data skills include PostgreSQL optimization, Entity Framework, and complex SQL queries. As a Software Architect, I ensure your database design is flawless using the best indexing and scaling strategies. ✔️ AI Integrations & Tooling: As an AI integration developer, I build C# and Python solutions for AI-driven services. My expertise includes pragmatic implementation of LLM APIs, OpenAI/Claude integrations, and utilizing the Model Context Protocol (MCP) to securely connect AI agents with backend systems and custom data sources without unnecessary over-engineering. 📊 My Achievements in Numbers: 🔶 Software Architect for a Global Enterprise (SaaS / B2B): ▪️ Improved API response times by 200% through technical code audit and query optimization. ▪️ Reduced cloud infrastructure costs by 50% via enhanced microservices architecture and Docker deployment. ▪️ Accelerated feature delivery by 30% using automated CI/CD pipelines and agile workflows. 🔶 Senior Full Stack Developer for a FinTech Platform: ▪️ Achieved 99.99% uptime through .NET migration and Node.js backend optimization. ▪️ Reduced database deadlocks by 100% with a technical database audit and SQL Server optimization. 🔶 API Specialist for an E-commerce Engine: ▪️ 2x checkout speed by redesigning the REST API and payment gateway integration (Stripe). ▪️ 3x faster user onboarding through architecture audit insights and Auth0 security implementation. Why should you hire me as your Senior Full Stack Developer and Software Architect? ▪️ 20+ years in software engineering, backend architecture, API development, and cloud infrastructure. ▪️ Senior Full Stack Developer in React.js, Vue.js, Angular, and modern JavaScript. ▪️ .NET Expert in C#, ASP.NET MVC, Web API, and .NET. ▪️ Delivered enterprise backend services and microservices architectures for B2B and SaaS platforms. ▪️ Node.js Specialist support for high-concurrency event-driven applications. ▪️ Database architecture specialist for SQL Server, PostgreSQL, and MySQL growth. ▪️ Expert in Azure DevOps, Docker containerization, and CI/CD pipelines. ▪️ Practical experience in AI integrations, delivering C# and Python solutions for AI-driven services, including LLMs and MCP. ▪️ Software Architect and CTO with a proven track record of zero-downtime, secure deployments. Specialized Development Services: 🔹 Architecture Audit: From database performance audit to technical code audit. 🔹 API Integration: From third-party API integrations to custom REST/GraphQL APIs. 🔹 Backend Development: From Node.js microservices to .NET Core enterprise systems. 🔹 Frontend & UI: React.js and Vue.js scalable applications. 🔹 Cloud & DevOps: Optimization for Azure App Services, Docker, and GitHub Actions. 🔹 AI Integrations: solutions for AI-driven services, LLM API endpoints, and MCP (Model Context Protocol) implementation. Looking for an experienced Senior Full Stack Developer and Software Architect? Let’s connect!
OSKI solutions
Associated with
OSKI solutions
$1M+
earned
Vladimir S.
$45/hr
100% Job Success
$500K+ earned
Offers consultations
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I'm a Python developer and AI engineer with 10+ years of experience, running a 80-person agency (Go Wombat) with offices in Valencia, Tallinn, and Ukraine. Over the last few years my work has shifted heavily into AI. I build production RAG pipelines, LLM-powered products, and autonomous agent systems - not demos or prototypes that fall apart at scale, but things that run in production and get maintained long-term. Recent projects include a RAG-based troubleshooting system for a UK manufacturing client (Innovate UK funded), an AI investment research platform with OpenAI-powered analysis, LLM compliance automation for an AdTech company, and an AI music therapy product used in dementia and autism care. What I work with on the AI side: * Multi-agent systems and AI workflows using LangGraph, OpenAI Agents SDK, Claude Agent SDK, Google ADK, MCP, OpenClaw-based agents, and custom agent frameworks for tool and data integration * Production RAG systems using pgvector, Qdrant, Chroma, hybrid retrieval, reranking, knowledge graph enrichment, and RAGAS-based evaluation pipelines * Agentic automation with tool use, memory/context management, sandboxed execution, human-in-the-loop approvals, and workflow orchestration * LLM fine-tuning and adaptation with LoRA/QLoRA, synthetic datasets, domain-specific evaluation suites, and structured output validation * Working with OpenAI, Anthropic Claude, Gemini, Qwen, DeepSeek, GLM, Mistral, Kimi, and self-hosted open-weight models * LLMOps and AI observability with LangSmith, Langfuse, Opik, tracing, monitoring, alerting, evals, and regression testing * AI governance and EU AI Act readiness, including risk classification, technical documentation, audit trails, and monitoring workflows * Production deployment of AI systems with APIs, Docker, cloud infrastructure, secure integrations, and scalable backend architectures Focus areas: AI copilots, autonomous workflows, RAG platforms, internal knowledge systems, agentic tooling, AI automation, document intelligence, and customer-facing AI products. On the backend side I've been writing Python for a long time - Django, FastAPI, PostgreSQL, MongoDB, Redis, AWS (EC2, S3, Lambda, RDS, Elasticache), Docker, Kubernetes. That foundation matters a lot when you're building AI systems that need to hold up under real load and stay maintainable six months after launch. I've shipped products across healthcare, fintech, logistics, adtech, ecommerce, IoT, and SaaS. The range matters because AI problems look different depending on the domain - a compliance monitoring pipeline for an ad platform has almost nothing in common with a predictive maintenance system for factory equipment, even if both use LLMs under the hood. Because I run an agency, I can pull in the right people when a project grows beyond one person. Designers, mobile devs, data engineers - whoever the work calls for. But I stay personally involved throughout: I'm the one reading your requirements, scoping the work, and staying accountable for what gets delivered. Several of my Upwork clients have been with me for 5+ years. I mention that not as a credential but because it's the clearest signal I have that the working relationship tends to go well. If you want to talk through what you're building, I'm happy to take a look and give you an honest read before any commitment.
Vladimir S. has worked .
Go Wombat OÜ
Associated with
Go Wombat OÜ
$900K+
earned
Oleksandr K.
$50/hr
99% Job Success
$1M+ earned
Available now
Offers consultations
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As the Founder and Owner of a successful Zoho solutions business, I bring 10+ years of hands-on experience with Zoho and 20+ years in app, web, and database development across dozens of industries. I understand the challenges founders face—manual processes, inefficient workflows, and lack of system integration—and I design solutions that save time, increase productivity, and drive growth. I specialize in implementing, customizing, and expanding Zoho applications to meet the unique needs of your business. From custom Zoho CRM development to complex integrations via APIs, Zapier, or Make, I create systems that align perfectly with how you work. My goal is to automate your sales, marketing, and business processes while standardizing workflows for maximum efficiency. Zoho Expertise: ✅ Zoho One | ZeptoMail | Zoho CRM | Zoho Flow | Zoho Desk | Zoho Analytics ✅ Zoho Books | Zoho Inventory | Zoho Creator | Zoho Recruit & Zoho People ✅ Zoho Subscriptions | Orchestly | Zoho Catalyst | Custom API Integrations What I Deliver: Fully customized Zoho workflows that match your business processes Automation of repetitive tasks to free up your team’s time Custom modules, fields, views, and filters to make Zoho work the way you do Seamless integrations across Zoho apps and external systems As a founder myself, I know what it takes to scale a business efficiently. Let’s work together to unlock the full potential of Zoho for your business, automate your operations, and drive measurable results.
Oleksandr K. has worked .
CRMOZ — Zoho Implementation & Automation Agency
Associated with
CRMOZ — Zoho Implementation & Automation Agency
$2M+
earned
Marta N.
$35/hr
100% Job Success
$10K+ earned
Available now
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75% avg reduction in manual ops. 3x faster feature shipping. 80% tier-1 support automated. These are the numbers from production AI systems I have shipped as a full stack developer and AI developer for SaaS, manufacturing, fintech, and healthcare teams. I build production-ready AI infrastructure - not prototypes. Multi-agent systems, LLM integrations, RAG pipelines, and AI automation that replaces real operational work. As a full stack developer and AI developer I own the full build - from LLM selection and agent orchestration to vector databases, API layers, and production deployment. ⭐⭐⭐⭐⭐"Very good communication and follow-up. They resolved not only legacy issues, but also identified and fixed additional problems we had not noticed. The result was a fully functional system that met all our requirements." - Client, Microsoft Copilot Implementation ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT I BUILD AS A FULL STACK DEVELOPER AND AI DEVELOPER ▸ AI Systems & Multi-Agent Development ▸ Full stack AI infrastructure from LLM selection and agent orchestration to vector databases, API layers, and production deployment. LangChain, LangGraph, RAG pipelines, and agentic AI workflows. ▸ The intelligence core of your product, built by a full stack developer with AI developer depth. ▸ AI Assistant & Chatbot Development Conversational AI, internal knowledge assistants, RAG-powered document Q&A, and customer-facing chatbots using OpenAI, Claude, or Gemini. AI developer chatbot development integrated directly into your existing stack. Chatbot development that reduces tier-1 ticket volume by 70-80%. ▸ AI Integration & API Connectivity Full stack developer connecting AI to your existing CRM, ERP, SaaS tools, and databases via REST API, webhooks, LangChain, and workflow platforms including n8n, Zapier, and Make. ▸ AI Automation Agents Multi-agent autonomous systems that replace manual operational work - lead qualification, procurement pipelines, document processing, outreach, support triage, and reporting. AI automation built by a full stack developer with production deployment experience. ▸ RAG Pipelines & Vector Search RAG system design, vector database selection and configuration (Pinecone, Weaviate, FAISS), embedding pipelines, semantic search, and document AI. Full stack developer and AI developer work covering the full RAG architecture from chunking to retrieval evaluation. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ DELIVERY NUMBERS 75% - avg reduction in manual ops 3x - faster feature shipping for product teams 80% - tier-1 support automated via chatbot development ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ CORE TECH STACK LLM & Models: OpenAI API, GPT-4o, Claude (Anthropic), Gemini, LLM Integration, Fine-tuning, Hugging Face, Whisper API Frameworks & Orchestration: LangChain, LangGraph, LlamaIndex, RAG, Multi-Agent Systems, Agentic AI, Autonomous AI Agents, Prompt Engineering Vector & Data: Pinecone, Weaviate, FAISS, Semantic Search, Embeddings, AI Data Pipelines, Document AI Automation & Integration: n8n, Zapier, Make, REST API, FastAPI, Python, Node.js, AWS/GCP/Azure Full Stack Developer Stack: Python, TypeScript, React, Node.js, .NET, PostgreSQL, FastAPI ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ INDUSTRIES Manufacturing | Construction | SaaS | Marketing | Fintech | Healthcare | E-commerce | Real Estate | HR Tech 📩 Send me a description of your current workflow. I will tell you within 24 hours where AI automation can remove the most manual work and what it would take to build it.
Althera Code
Associated with
Althera Code
$10K+
earned
Mykola K.
$45/hr
100% Job Success
$200K+ earned
Offers consultations
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𝗖𝗹𝗶𝗲𝗻𝘁-𝗰𝗲𝗻𝘁𝗿𝗶𝗰 𝗙𝘂𝗹𝗹-𝘀𝘁𝗮𝗰𝗸 𝗔𝗜 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 (JavaScript, TypeScript, Node.JS, Nest.JS, Python, FastAPI, Express, Next.JS, React.JS, Vue.JS, React Native, WebRTC) with 𝟮𝟬 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 in custom software development and AI powered applications Completed 𝗼𝘃𝗲𝗿 𝟵𝟬+ 𝗪𝗲𝗯 application & 𝗮𝗻𝗱 𝗠𝗼𝗯𝗶𝗹𝗲 application including copmplex custom AI Agent for Sales, AI Assistant of various complexity for startups, scaleups and enterprises. Build your software with AgilePulse™ empowered by transparent processes, quality control systems and engineering excellence. 🦾 𝗠𝗬 𝗖𝗢𝗥𝗘 𝗧𝗘𝗖𝗛 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘 | 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦: ⭐ AI & ML DEVELOPMENT: Recognized as a top machine learning and chatbot development provider by Clutch. I deliver AI solutions such as agentic AI development, generative AI, intelligent automation, AI-powered mobile apps, chatbots, and RPA. AI Agent and AI assistant, AI workflow to optimize Sales, HR Tech, Finance, for Insurance, Healthcare, BPO, Fintech, and Finance From strategy to implementation, I guide businesses in extracting data-driven insights, automating workflows, and strengthening their edge with adaptive, autonomous AI models. ⭐ AI AGENT DEVELOPMENT: AI agent for Sales, AI Chatbot, AI agent for ordering food, AI agent for CV, AI agent for HR, AI Voice Agent, AI Voice Assistant, AI Consultant for HelpDesk, AI HelpDesk assistant, AI Assistant for appointment booking, Speech to text - text to speech. LLMs, ChatGPT, OpenAI, Gemini, Perplexity, Claude ⭐ WEB APPLICATION DEVELOPMENT: I specialize in building modern, scalable web applications using technologies like JavaScript, TypeScript, Node.JS, Nest.JS, React.JS, Vue.JS, Angular, .Net, and Python, FastAPI. My expertise as an AI web software developer ensures high performance, security, and user-friendly interfaces tailored to your business needs. ⭐ MOBILE APP DEVELOPMENT: I create responsive, cross-platform mobile applications for iOS and Android. My toolkit includes React Native, Swift, Kotlin, and Java Android to deliver smooth, feature-rich mobile experiences for your users. ⭐ DESIGN ARCHITECTURE: My design architecture services include defining architecture attributes, crafting architecture descriptions, and developing solution and enterprise architectures. I am proficient in migration, monolithic to microservice transformations, serverless architecture, scalability design, security protocols, and network topology. I visualize complex systems using class and component diagrams, fault tolerance designs, UML, and tools like DrawIO. ⭐ DATABASES: My database expertise spans a variety of relational and NoSQL databases, including MongoDB, PostgreSQL, MSSQL, MySQL, and others, to provide fast, efficient, and secure data storage solutions. ⭐ BROWSER EXTENSION DEVELOPMENT: I develop powerful browser extensions to enhance user experience and productivity. My skills cover JavaScript, browser automation, Chrome Extension development, Chrome plugins, Firefox extensions, and LinkedIn automation, enabling seamless integrations and custom workflows. ACHIVEMENTS 🚀 Helped startups raise over $72M in follow-on funding after launching products built by our teams 🚀 One of the client's MVPs that we developed scaled to 500,000+ users within 14 months 🚀 On average, my clients reduce their time-to-market by 32% compared to traditional dev teams 🚀 80% of my clients return for a second phase within the first 6 months 🚀 Onboard dedicated teams in as little as 7-10 business days 🚀 100% transparency through weekly reports, PM dashboards, and performance metrics. 𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗜𝗘𝗦 Real-time communication / Chat & messaging software / Video-conferencing / Telecommunication / FinTech / E-commerce tech / AI & Machine Learning / AI Agent development / AI Assistant development / AI Agent development / Agentic Commerce / Browser Extension / IoT / Education / EduTech / E-Learning / Real Estate / Logistics & Transportation / Marketplaces / Retail / HRTech / HealthCare / Finance / Hotels & Hospitality / Fintech / Agentic Commerce 🤝🤝🤝 I'm here to provide you with superior services in building your product. If you need help with Software Architecture design or custom software development, I'll be glad to hear from you 🤝🤝🤝
Clover Dynamics
Associated with
Clover Dynamics
$300K+
earned
Pavlo S.
$45/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
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Trusted by startups and enterprises, including a #1 Finance App Store product, a $6.8M-funded fintech wallet, and a SaaS platform with 5M+ monthly visits. 7+ years of extensive experience. 100% Job Success. Senior Full Stack Developer and Tech Lead. Experienced in delivering scalable, full-stack web and mobile products across React, React Native, Node.js, and cloud infrastructure: AWS, K8s, Azure. 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐈'𝐦 𝐩𝐫𝐨𝐮𝐝 𝐨𝐟: 𝐑𝐞𝐚𝐥 𝐞𝐬𝐭𝐚𝐭𝐞 𝐦𝐚𝐫𝐤𝐞𝐭𝐢𝐧𝐠 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 - helps agents and brokers generate more listings through personalized, trackable direct mail campaigns. Built full-stack on Next.js, Node.js, PostgreSQL, and AWS. 𝐅𝐢𝐧𝐓𝐞𝐜𝐡 - Cryptocurrency trading platform for the Icelandic market serving 20,000+ users, ranked #1 in Finance on the App Store. Built Profit & Loss tracking from scratch using transaction history and historical exchange rates, integrated multi-currency trading, and delivered both web and mobile experiences. Stack: React, React Native, Node.js, MongoDB. 𝐀𝐈 + 𝐀𝐮𝐭𝐨𝐦𝐨𝐭𝐢𝐯𝐞 - AI-powered car shopping platform that helps users find the best offers. Engineered SEO-friendly static HTML generation using AWS Lambda and S3, achieving strong SEO performance without SSR, and integrated a third-party dealer-matching API for verified sellers. 𝐒𝐚𝐚𝐒 - Project management SaaS with a Gantt chart, task dependencies, real-time collaboration via WebSockets, multilingual/timezone support, and Stripe/PayPal subscription billing. Stack: Next.js, Nest.js, MongoDB. 𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 - Online furniture store with AI product assistant, AI-powered recommendations, custom CMS and CRM, Stripe-style checkout flow, and SEO optimization. Serving 100,000+ monthly users. Features include product variation, complex discount logic, category/subcategory navigation, wishlist, and efficient catalog filtering. Stack: React, Node.js. 𝐓𝐞𝐜𝐡 𝐬𝐭𝐚𝐜𝐤: ⚡ Frontend: React, Next.js, TypeScript, Redux, TanStack, Tailwind CSS ⚡ Backend: Node.js, Express, NestJS, Fastify, GraphQL ⚡ Databases: PostgreSQL, MongoDB, DynamoDB, Supabase ⚡ AWS: Lambda, S3, EC2, CloudFront, API Gateway, RDS ⚡ DevOps: Docker, Kubernetes, GitHub Actions, CircleCI, CI/CD ⚡ Mobile: React Native, Expo 𝐖𝐡𝐚𝐭 𝐈 𝐛𝐫𝐢𝐧𝐠: Full-stack ownership: I handle architecture, backend APIs, databases, frontend, and AWS deployment. AWS infrastructure: Serverless architectures with Lambda and S3, scalable deployments, CI/CD pipelines, cost-optimized setups. SaaS platforms: Multi-tenant architecture, subscription billing (Stripe/PayPal), admin dashboards, real-time collaboration via WebSockets. FinTech & compliance: Secure transaction flows, KYC/AML-ready architecture, regulatory compliance from day one. AI integrations: LLM-powered features, intelligent chatbots, and workflow automation. 𝐖𝐡𝐚𝐭 𝐰𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐦𝐞 𝐥𝐨𝐨𝐤𝐬 𝐥𝐢𝐤𝐞: ✓ Strategic input at the architecture stage ✓ Clear, proactive communication and honest timelines ✓ Code your team can actually maintain and scale ✓ Security and compliance thought through from the start ✓ 30% faster delivery using AI-powered development tools ✓ Available across US/EU time zones, fluent English Great software starts with the right technical partner. Message me, and we'll set up a quick call to discuss your project.
Pavlo S. has worked .
Stubbs  🏆 Top rated plus React agency
Associated with
Stubbs  🏆 Top rated plus React agency
$1M+
earned
Maksym B.
$39/hr
100% Job Success
$100K+ earned
Offers consultations
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🥇As 7+ years experienced Python Full Stack developer, I delivered 50+ projects for 30+ clients - AI focused web applications, SaaS, MVPs, POCs, analytical platforms, CRM/ERP systems, and many AI-driven development projects built with Python Full stack . 𝐖𝐡𝐲 𝐦𝐞: 🚀50+ Delivered projects in Python Full Stack development 🔝30+ happy clients from the USA, UK, Germany, and more 🔥7+ years in Python full stack development as a Python Full stack developer, fullstack developer, and backend engineer 👨🏼‍💻3 years in business intelligence 👥Operate with small but result-driven team of Python full stack developers, AI developers, and UI/UX designers 𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤: 1️⃣ Discovery & Analysis We map your goals and plan Python full stack architecture, AI integration, and API structure. 2️⃣ UX/UI Design Simple layouts that fit AI chatbots, AI agent flows, AI receptionist interfaces, and classic dashboards. 3️⃣ Development As python full stack developers, we build Python full stack apps using Python Django, Python FastAPI, Python Flask, JavaScript, React, Vue, and REST API. Strong focus on AI development, building AI agent development, AI chatbot development, AI integration, LLM flows, natural language processing, deep learning models, and Python machine learning. 4️⃣ Optimization & QA Python full stack optimization, API performance, and testing for AI systems. 5️⃣ Release & Support Stable Python full stack deployments, AI model monitoring, and API maintenance. 𝐌𝐲 𝐭𝐞𝐜𝐡 𝐬𝐭𝐚𝐜𝐤: Front-end: Vue, React, Next.js, JavaScript, TypeScript, HTML, CSS Back-end: Django, FastAPI, Flask, Python, Aiohttp, Golang Databases: PostgreSQL, MySQL, SQLite, MongoDB, DynamoDB Tools: Docker, Kubernetes, AWS, Celery, Redis, Git, Grafana, Figma P𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗜 𝗪𝗼𝗿𝗸𝗲𝗱 𝗢𝗻 🔸 CRM & ERP Systems Built Python full stack CRM and ERP with Python Django, Python REST API, and React/Vue. Added AI automation for workflows, AI data extraction, AI text tagging, and simple natural language processing features. Used Docker, PostgreSQL, and Python full stack development for stability. 🔹 Management Platforms (LMS, EMS, WMS) Created systems using Python Full stack FastAPI, Python Django, and Next.js. Integrated AI scheduling, AI agents for ticket sorting, and natural language processing search. Stack used: Redis, DynamoDB, MongoDB, Python API development, Python automation. 🔸 SaaS Platforms Developed SaaS products using Python Full stack Django REST, Python FastAPI, and AWS. Added AI chatbot modules, AI content generation, AI onboarding, AI integration with LLMs, and Python machine learning models. Used AWS Lambda and Python microservices. 🔹 Marketplaces Built marketplaces with Python Django and React for real estate, fintech, and ecommerce. Added AI recommendations, AI search, natural language processing filters, and AI scoring. Used Python web scraping for data intake and Elasticsearch for fast search. 🔸 MVPs and POCs for Startups Delivered lightweight MVPs using Python Flask, Python FastAPI, React, and SQLite. Added small AI chatbot flows, AI data cleanup, and LLM summaries. Used Kubernetes and Python full stack workflows. 🔹 Web Applications Built portals, dashboards, booking apps, and ecommerce platforms with React, Vue, Next.js, and Python backends. Used Python Flask, Python Aiohttp, Python FastAPI, and Golang. Added AI receptionist flows, AI chatbots, AI NLP search, and small deep learning models for images. Included Python web scraping modules and Python API integration. 🔥 AI Projects as Python Full stack developer: 🤖 AI Chatbots & AI Agents Built AI chatbot systems and AI agent development flows using Python FastAPI, Python Django, and ChatGPT API Integration. Features included: natural language processing, real-time API calls, Python machine learning scoring, and LLM-driven responses. 🧠 AI Content Automation Created AI automation tools for content generation using Python LLM pipelines, Python full stack logic, and AI integration with third-party APIs. Used deep learning models, vector search, and Python web scraping for structured data. 🗂 AI Document Processing Developed AI document extraction tools with Python machine learning, OCR, natural language processing, and Python fullstack dashboards. Included Python background workers and Python REST API layers. 🏪 AI Receptionist & AI Support Systems Built AI receptionist flows using Python FastAPI, Python async systems, and LLMs. Integrated voice-to-text, AI message routing, and custom Python API development. 👉 Message me or click Invite - I can walk you through a similar project I’ve already delivered and help you build yours.
Maksym B. has worked .
Neural Dynamics Web
Associated with
Neural Dynamics Web
$100K+
earned
Roman L.
$50/hr
92% Job Success
$200K+ earned
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𝐓𝐨𝐩 4% 𝐏𝐲𝐭𝐡𝐨𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐚𝐜𝐜𝐨𝐫𝐝𝐢𝐧𝐠 𝐭𝐨 𝐂𝐨𝐝𝐞𝐫𝐬𝐑𝐚𝐧𝐤 delivering full-stack web and mobile app development with a focus on AI automation, API integration, and data-driven engineering. Building and developing scalable web applications, platforms, and software tools using Python, Django, FastAPI, Flask, React, Angular, and OpenAI API, creating intelligent, high-performance digital products. Expert in connecting front-end and back-end technologies to ensure seamless user experience and maintainable architecture. ⚡ Highlights 🏆 8+ years of experience | 46+ successful projects 🤖 Expertise in AI development, ChatGPT integration, and machine learning 🧠 Proven record in SaaS, FinTech, Healthcare, and Education platforms 💡 Notable Projects 🧠 Sembli AI — AI assistant for meeting transcription and summaries using Python, React, Flask, and OpenAI API. 📊 Simba — AI-powered Marketing Analytics Platform. ChatGPT-based assistant built with Python, Flask, React, Pandas, Tailwind CSS, and S3. 🪙 Google Ad Grants Tool — AI automation for keyword structuring using OpenAI API, Python, React, and web scraping crawlers. 🧩 Tech Expertise Languages: Python, JavaScript, TypeScript, PHP, HTML, CSS, SQL Frameworks: Django, Django REST Framework, Flask, FastAPI, React, React Native, Angular, Node.js, Next.js AI / ML / Data Science: Artificial Intelligence, Artifical Intelligence, Artificial Inteligence, Machine Learning, Deep Learning, ChatGPT, GPT-3, OpenAI API, Data Analysis, Pandas, NumPy, neural networks, embeddings, Python scripts, AI chatbot development, AI automation Data Scraping & ETL: Scrapy, Selenium, BeautifulSoup, Splash, Data Scraping, ETL pipelines, Excel, data engineering, visualization dashboards Backend & API Development: RESTful APIs, API Integration, GraphQL, OAuth, WebRTC, Socket, RPC, Zapier, Stripe API, PayPal API, payment gateways Frontend: Responsive design, React Components, Tailwind CSS, UI/UX, front-end optimization Cloud & DevOps: AWS, Google Cloud (GCP), Firebase, Docker, Kubernetes, Heroku, CI/CD, Git Databases: PostgreSQL, MySQL, MongoDB, Redis, SQLite Testing: Pytest, Selenium, Cypress, Puppeteer Experienced in full-stack / fullstack / full stack / front-end / frontend / front end / back-end / backend / back end software engineering and application development across web platforms, mobile systems, and AI-driven apps. Additional experience includes AWS Developer work, code review, Excel data automation, and MPPT-based smart control systems. Also skilled as an Artificial Intelligence Engineer with expertise in full-stack architecture and AI integrations. 🌍 Industries 📍 SaaS & B2B Platforms 📍 FinTech & Analytics 📍 Healthcare & Telehealth 📍 Education, E-learning & LMS 📍 Non-profit & Social Good 📍 Marketing, SEO & CRM 📍 Media, Music & Social Platforms 🧱 Project Types ✅ MVP, SaaS MVP, startup prototype, and clickable Figma prototype ✅ AI & ML application development ✅ Web & mobile app creation ✅ REST & GraphQL API integration ✅ Workflow automation and data scraping solutions ✅ Payment gateway (Stripe, PayPal, EOS) ✅ Business intelligence dashboards ✅ CMS & WordPress website development 🔧 Approach The focus is on building scalable, intelligent web solutions that automate workflows, analyze data, and deliver seamless digital experiences. Every product whether a web app, mobile application, or AI-powered platform is created with clean code, maintainability, and innovation in mind. Projects are engineered to combine Artificial Intelligence, data science, and modern web technologies to bring clients’ ideas to life from prototype to enterprise system. 🤝 Collaboration Open to working with: 🏆 Startups (MVP & SaaS prototyping) 🏆 SMBs & Enterprises (process automation, web apps) 🏆 Non-profits (AI & data-driven impact tools) Ready to create your next AI-powered product? Let’s build and develop your next intelligent digital product turning ideas into reality through smart engineering and AI innovation.
Jellyfish.tech
Associated with
Jellyfish.tech
$1M+
earned
Kseniia G.
$45.99/hr
100% Job Success
$200K+ earned
Offers consultations
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𝗪𝗮𝗻𝘁 𝘁𝗼 𝗯𝘂𝗶𝗹𝗱 𝗮 𝗱𝗶𝗴𝗶𝘁𝗮𝗹 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝗯𝘆 𝗔𝗜? 𝗬𝗼𝘂’𝗿𝗲 𝗶𝗻 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝗽𝗹𝗮𝗰𝗲. Full-Stack Python & AI App Developer with strong expertise in back-end, front-end, and API integration. Experienced in building AI-powered web applications, SaaS platforms, and mobile solutions using Django, FastAPI, React, and OpenAI API. Projects span across industries from healthcare and education to fintech and non-profit, delivering measurable results through strategic product development, clean architecture, and seamless UX/UI design. Outside of work, I’m an animal lover, volunteer, and social good advocate, offering special support and discounts for projects with social impact. ⚡ Notable Projects 🧠 Zeno.PM — ERP & project management platform with ChatGPT-powered AI automation and dashboards. 🩺 AskSamie — Therapy web app integrated with Shopify API. Built with Python, Django REST Framework, React, FastAPI. 🙏 ChurchCopy.ai — GPT-3 communication app for churches, built in Bubble.io as an MVP. 💬 Sembly AI — AI meeting assistant for recording and summaries. 📊 Digital Ninja — Automation tool with data scraping, ETL pipelines, and OpenAI integration. 💻 SIMBA — AI-powered marketing analytics system with Bayesian modeling. 🎵 DropTrack — Music SaaS platform with automation and custom API integrations. Experienced in building, creating, and developing scalable AI-powered platforms, mobile apps, websites, and software solutions using Django, FastAPI, React, Flask, and OpenAI API. Projects span healthcare, education, fintech, and non-profit sectors, delivering measurable results through strategic product development, clean architecture, and user-friendly design. 🧩 Tech Expertise Programming Languages: Python, JavaScript, TypeScript, PHP, HTML, CSS, SQL Frameworks & Libraries: Django, Django REST Framework, FastAPI, Flask, React, React Native, Next.js, Node.js, Tailwind CSS, jQuery AI & Machine Learning: Artificial Intelligence (AI), Artifical Intelligence, Artificial Inteligence, Machine Learning, GPT-3, ChatGPT, OpenAI API, NLP, neural networks, AI chatbot development, AI software development, Generative AI, NLP Web Scraping & Data Engineering: Scrapy, Selenium, Splash, BeautifulSoup, Pandas, NumPy, ETL pipelines, Excel, data visualization, Data Scraping automation, web scraping app Backend & API Development: API Integration, REST API, GraphQL, OAuth, Socket, WebRTC, RPC, Zapier, Stripe API, PayPal API, EOS, payment gateway integration, API developer experience Frontend Development: UI/UX design, website and web app creation, interactive dashboards DevOps & Cloud: AWS, Google Cloud, Firebase, Docker, Kubernetes, CI/CD, Git Databases: PostgreSQL, MySQL, MongoDB, Redis, SQLite Testing & QA: Pytest, Cypress, Selenium, Puppeteer Experienced in full-stack / fullstack / full stack / front-end / frontend / front end / back-end / backend / back end software engineering and application development across web platforms, mobile systems, and AI-driven apps. Also skilled in MPPT automation, AWS deployment, and code review for scalable architectures. 🌍 Domains 📍 SaaS & B2B Platforms 📍 EdTech, E-Learning, LMS 📍 Non-profit & Social Impact 📍 Healthcare, Telehealth & Wellness 📍 CRM & ERP Systems 📍 Marketing & SEO Automation 📍 AI-driven FinTech & Analytics 📍 Marketplaces, E-commerce & Listing Apps 📍 Media, Music & Social Platforms 📍 Custom Websites & Automation Tools 🧱 Project Types ✅ MVP, prototype, and clickable product design (Figma prototyping, Bubble MVP, startup MVP, SaaS MVP development) ✅ Full-stack web and mobile app development ✅ AI-powered app creation and chatbot software build ✅ Workflow automation and data scraping tools ✅ SaaS platform design and engineering ✅ REST API development and integration ✅ Payment system implementation (Stripe, PayPal, EOS) ✅ WordPress & CMS website development ✅ Web scraping bots, crawlers, and automation systems ✅ Business intelligence dashboards 🚀 Approach Focus on creating, building, and engineering value-oriented digital products from lightweight MVPs to full enterprise systems. Combining AI technologies, modern UI/UX design, and solid software development to deliver scalable, maintainable, and smart products. Let’s build, create, and develop each app, platform, or website that is crafted to simplify complexity, automate workflows, and empower users through Artificial Intelligence. 🤝 Collaboration 🏆 Startups and Entrepreneurs (MVP & SaaS prototyping) 🏆 SMBs & SMEs (process automation, web apps, website creation) 🏆 Enterprises (AI-powered platforms, API integrations, business systems) 🏆 Non-profits and Educational organizations (social impact tech) Let’s bring intelligence to your product from idea to launch. Open to collaboration on AI solutions, web apps, mobile apps, platforms, or any digital innovation. Ready to get started? Let’s discuss your vision.
Kseniia G. has worked .
Jellyfish.tech
Associated with
Jellyfish.tech
$1M+
earned
Taras P.
$50/hr
100% Job Success
$300K+ earned
Available now
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Dynamic WEB Development Expert with Over a Decade of Experience 🚀 Proficiency & Specializations: With 12+ years of industry experience, I specialize in delivering scalable, highly reliable web and mobile applications. For instance, I've delivered projects from a video streaming platform with auto-scaling capabilities to a restaurant ordering and check-out solution, which has grown from 0 to 5000 venues with more than 50000 unique users per day (over 2 million monthly). My expertise extends to web, PWA, and mobile app development within the FoodTech, HoReCa, Food & Beverage, and Retail industries. 📈Products I can help you build and succeed: - Custom Point of Sale development | POS terminals: I’ve built several feature-rich reliable, scalable, and successful POS systems for HoReCa and Retail industries: – Complex Workflows: Streamlined HORECA operations like table reservations and kitchen coordination for faster service and fewer errors. – Inventory Management: Built real-time stock tracking with automated alerts to minimize overstocking and stockouts. – Scalability: Designed cloud-based systems for multi-location businesses, ensuring centralized control and consistency. – Third-Party Integrations: Integrated payment gateways, accounting tools, and loyalty programs for seamless operations. – User Adoption: Created intuitive interfaces and provided training for smooth transitions. - Сustom-made KDS with support of various POS systems, with main functionality: – Large-Screen Compatibility: Optimized for visibility on large monitors. – POS Integration: Full integration with the client’s existing pos system, ensuring real-time data flow. – Remote Order Management: Order processing through a keyboard interface. – Expo Mode: For waitstaff to track order readiness. – Android Compatibility: Built exclusively for cost-effective android devices. – Unique Access Control: A back-office licensing system ensures exclusive, secure access for authorized users. - Self-service Kiosk systems for quick-service restaurants: – Order Customization: Designed intuitive interfaces to handle complex order modifications (e.g., toppings, modifiers, dietary preferences) while keeping the process simple for customers. – Integration with Kitchen Systems: Connected kiosks to Kitchen Display Systems (KDS) and POS systems, ensuring accurate and real-time order flow to the kitchen. – Accessibility and Usability: Built kiosks with multi-language support to cater to diverse customer needs. – Maintenance and Reliability: Developed robust systems with remote monitoring and troubleshooting capabilities to minimize downtime and ensure smooth operations. - Custom online ordering systems for restaurants and food businesses: – Complex Menu Management: Designed systems to handle intricate menus with customizable options (e.g., toppings, sizes, dietary preferences, product modifiers, allergens, etc) while ensuring a smooth ordering process. – Integration with POS and Kitchen Systems: Connected online orders to POS and Kitchen Display Systems (KDS) for real-time order processing and accuracy. – High Traffic Handling: Built scalable platforms capable of managing peak order volumes during busy hours without performance issues: from 0 to 2 million unique users monthly. – Payment and Security: Integrated secure payment gateways and implemented robust data encryption to protect customer information and build trust. – Delivery and Pickup Coordination: Added features for real-time order tracking, delivery scheduling, and pickup notifications to improve customer satisfaction. – Promotions and Loyalty Programs: Incorporated features for dynamic discounts, upselling, and loyalty rewards to boost customer engagement and repeat orders. 💡 Technical Toolbox: - Web & Software Architecture: Expert in crafting robust SaaS Applications. - Python Mastery: Proficient with Fast API | FastAPI | Flask | Django | Django REST Framework | Celery and Django Tenants - Cloud Solutions: Skilled in AWS ( EC2 | RDS | S3 | CloudFront | Lambda ), DigitalOcean and Ubuntu Server / VPS setup. - Database & Server Management: Competent in Nginx | MySQL | PostgreSQL | MongoDB - Automation & CI/CD: Experienced in Bitbucket pipelines and GitHub actions - Modern Tools: Proficient in Git, Docker, Docker-compose - Payment Integration: Skilled in integrating systems like Stripe | Checkout com | Moyasar | Apple Pay 🌐 Front-end: - Javascript & Frameworks: Adept in JS , Vue.js , Vuex , React , React Toolkit (RTK) Redux. - Web Design: Proficient in HTML, CSS ( SASS | SCSS ), templating, Bootstrap , Bootstrap5 🌟 Personal Traits: - Innovative Thinker: Always eager to explore new ideas and concepts. - Continuous Learner: Committed to staying updated with the latest technologies. - Independent & Team Player: Capable of thriving both as a self-starter and in collaborative environments.
Peppernode
Associated with
Peppernode
$500K+
earned