Nest.js Developers zum Anheuern
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Gesponserte Freelancer
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Over 8+ years, I have worked with startups, growing businesses, and enterprise clients across multiple industries. I understand that every project is different, and I treat it that way. My process is straightforward: 1️⃣ Understand your business goals deeply 2️⃣ Design the right architecture for your needs 3️⃣ Build...Over 8+ years, I have worked with startups, growing businesses, and enterprise clients across multiple industries. I understand that every project is different, and I treat it that way. My process is straightforward: 1️⃣ Understand your business goals deeply 2️⃣ Design the right architecture for your needs 3️⃣ Build clean, scalable, and maintainable code 4️⃣ Deliver on time with full transparency 5️⃣ Provide post-launch support & guidance ───────────────────────────────────── ✅ WHAT YOU GET WORKING WITH ME ───────────────────────────────────── ✔ 8+ years of proven development experience ✔ Clean, documented & scalable code ✔ Daily progress updates — zero ghosting ✔ On-time delivery with milestone tracking ✔ Post-launch support & maintenance ✔ A development partner who thinks long-term ───────────────────────────────────── CORE TECH STACK ───────────────────────────────────── Mobile: React Native, Expo Frontend: React.js, Next.js, Tailwind CSS Backend: Node.js, Express, FastAPI Database: MongoDB, PostgreSQL, Firebase AI/ML: OpenAI API, LangChain, TensorFlow Automation: n8n, Make, Zapier Other: WordPress, Shopify, REST APIs ───────────────────────────────────── If you are looking for a reliable, experienced developer who understands both technology and business, let us work together. Click "Invite" or "Message" to discuss your project. I respond within 10 minutes. weniger
appdesigner487
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Greetings! I love to satisfy clients providing high quality work and good communication. I hold a Bachelor's degree in computer science. I have built many websites using several technical stacks, working as a web developer over the last 10+ years. Additionally, I have a career in healthcare company, building...Greetings! I love to satisfy clients providing high quality work and good communication. I hold a Bachelor's degree in computer science. I have built many websites using several technical stacks, working as a web developer over the last 10+ years. Additionally, I have a career in healthcare company, building LIMS(Laboratory Information Management System) and experiencing Healthcare Integration Engine like Mirth Connect. Following technologies are what I mastered as a full-stack expert. Frontend React, Vue, Angular, HTML, CSS, SCSS, JavaScript, JQuery Backend Node/Express, PHP/Laravel, PHP/CodeIgniter, Python/Flask, Python/Django Database MySQL, MongoDB, SQLite, PostgreSQL I am familiar with AWS deployment and Linux System Administration too. Thanks for checking my profile in details. weniger
stelianrosca618
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I build AI-driven backend systems that think, learn, and scale. Most companies use AI in fragments—a chatbot here, an automation there. I help startups and enterprises build complete AI ecosystems by integrating Large Language Models (LLMs) into robust, production-grade backend architectures. Whether you are building...I build AI-driven backend systems that think, learn, and scale. Most companies use AI in fragments—a chatbot here, an automation there. I help startups and enterprises build complete AI ecosystems by integrating Large Language Models (LLMs) into robust, production-grade backend architectures. Whether you are building an AI SaaS MVP from scratch or adding RAG-based intelligence to an existing platform, I deliver clean, maintainable, and secure code. What I bring to your project: 1. AI Integration: Expert in OpenAI (o1/GPT-4), Claude 3.5, and Gemini 2.0. I specialize in RAG (Retrieval-Augmented Generation) and AI Agent workflows using LangChain and CrewAI. 2. Backend Excellence: Scalable microservices built with FastAPI, Python, or NestJS. I focus on high-concurrency, security, and performance. 3. Vector Infrastructure: Implementation of Pinecone, Weaviate, or PGVector for efficient data retrieval. 4. SaaS Architecture: Multi-tenant database design, Stripe subscription logic, and RBAC (Role-Based Access Control). Why work with me? - Speed to MVP: I focus on getting your AI SaaS to market in 3–6 weeks without technical debt. - Product Thinking: I don't just follow tickets; I ask "Why?" to ensure the feature actually drives user value. - Security First: I ensure your AI integrations are prompt-injection resistant and GDPR/SOC2 compliant. TECHNICAL STACK: - AI & LLM: OpenAI API, LangChain, RAG, Prompt Engineering, Vector DBs (Pinecone) - Backend: Python (FastAPI, Django), Node.js (NestJS, Express), Go - Databases: PostgreSQL, MongoDB, Redis, Supabase - Cloud & DevOps: AWS (Lambda, ECS), Docker, GitHub Actions, Vercel - Integrations: Stripe, Auth0, Twilio, HubSpot, Slack API weniger
yuriihal
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I’m an AI Agent Engineer, Automation Specialist, and Full-Stack Developer with a deep passion for embedding intelligence into real-world web and mobile products and eliminating manual business workflows through automation. My core focus is designing, building, and deploying AI-driven systems—from LLM-powered agents...I’m an AI Agent Engineer, Automation Specialist, and Full-Stack Developer with a deep passion for embedding intelligence into real-world web and mobile products and eliminating manual business workflows through automation. My core focus is designing, building, and deploying AI-driven systems—from LLM-powered agents and voice assistants to data-aware automation pipelines that integrate seamlessly with production applications. I work extensively with large language models (LLMs), retrieval-augmented generation (RAG), vector databases, embeddings, tool-calling frameworks, and agent orchestration patterns to create systems that reason, act, and scale reliably. On the backend, I build high-performance APIs and services using FastAPI, Flask, Node.js, and Django, with strong experience in async architectures, background workers, and event-driven systems. I regularly work with PostgreSQL, MySQL, Redis, MongoDB, and Neo4j, and design robust data layers using SQLAlchemy, Prisma, and ORM/DAO patterns. For AI workloads, I integrate OpenAI, Anthropic, Ollama, ElevenLabs, and custom inference pipelines, alongside Qdrant, Pinecone, FAISS, and hybrid search setups. On the frontend, I build modern, scalable interfaces using React, Next.js, Vite, Tailwind CSS, and TypeScript, with a strong emphasis on UX for AI-powered tools (real-time streaming, agent state visualization, conversation flows, and admin dashboards). For mobile, I work with React Native and cross-platform architectures to bring AI features directly into user-facing apps. Automation is a major part of my work. I design end-to-end business automation systems using Make.com, n8n, webhooks, cron jobs, message queues, and direct API integrations. This includes automating CRM workflows, email systems, call routing, lead qualification, reporting, and data synchronization across platforms like Twilio, Slack, Google Sheets, Stripe, Shopify, and internal tools. I’m highly experienced in AI voice agents and real-time systems, integrating Twilio, speech-to-text (STT), text-to-speech (TTS), streaming APIs, and conversational state management to build production-ready voice and chat agents. I also work on computer-vision and multimodal pipelines, combining vision models, tracking, and sensor data for advanced use cases. From an infrastructure and MLOps perspective, I deploy and scale systems using Docker, Linux servers, cloud VPS, CI/CD pipelines, and GPU-accelerated environments. I care deeply about observability, logging, error handling, security, and cost optimization in AI systems. Above all, I love turning business problems into automated, intelligent systems—reducing operational friction, increasing efficiency, and building products where AI is not a feature, but a core capability. If you need AI agents, automation pipelines, or full-stack systems that actually work in production, that’s exactly what I build. weniger
Lazarone1
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We are Naasmind Ltd. , a skilled Digital Team providing complete Web, App and Branding services. Our team includes Flutter App Developers, MERN Stack Developers, Frontend & Backend Developers and experienced UI/UX and Graphics Designers. We build Websites, Mobile apps, eCommerce stores, Backend systems, APIs and...We are Naasmind Ltd. , a skilled Digital Team providing complete Web, App and Branding services. Our team includes Flutter App Developers, MERN Stack Developers, Frontend & Backend Developers and experienced UI/UX and Graphics Designers. We build Websites, Mobile apps, eCommerce stores, Backend systems, APIs and custom digital solutions using PHP, Python, MERN, WordPress, Flutter, Android, iOS and more. We also create modern UI/UX designs, Logos and brand visuals using Figma, Illustrator and Photoshop. Alongside design and development, we offer SEO, Digital Marketing, and social media management to help Businesses grow and improve their online presence. Our goal is simple : to deliver clean, fast and user friendly Digital Products that make your brand stand out. Thank you very much. Stay with us! weniger
naastech
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Hello, I’m Carlos Lopes, a full-stack developer focused on building reliable, scalable, and high-quality digital products. I work with clients who value clean code, clear communication, and long-term results. If you’re looking for quick hacks or the cheapest option, I may not be the right fit. If you want a developer...Hello, I’m Carlos Lopes, a full-stack developer focused on building reliable, scalable, and high-quality digital products. I work with clients who value clean code, clear communication, and long-term results. If you’re looking for quick hacks or the cheapest option, I may not be the right fit. If you want a developer who treats your project like a product—not a task—you’re in the right place. I handle projects end-to-end: planning, architecture, development, deployment, and optimization. My goal is always the same—deliver solutions that work smoothly, scale well, and are easy to maintain. 💡 What I Do Best - Build modern, responsive web applications - Develop secure backend systems & APIs - Integrate AI, automation, and third-party services - Optimize performance, security, and SEO - Fix, refactor, and improve existing systems I explain technical decisions in plain language, respond quickly, and keep clients updated throughout the project. 🔍 How I Work Clear requirements before starting Clean, documented, production-ready code On-time delivery with no shortcuts Honest feedback and realistic timelines I prefer long-term collaborations, but I’m also happy to help with one-off tasks, bug fixes, or consultations. ✅ Why Clients Choose Me ✔ Professional communication ✔ Strong problem-solving skills ✔ Focus on quality and maintainability ✔ One developer for full project delivery weniger
katxarra
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I am a Senior Full Stack Developer from Vietnam with over 10 years of experience in both frontend and backend development. While my focus is on frontend technologies, I am also highly skilled in backend and full-stack development. Skills & Expertise: Frontend: React, JavaScript, Next.js, Angular, Vue.js, Scss,...I am a Senior Full Stack Developer from Vietnam with over 10 years of experience in both frontend and backend development. While my focus is on frontend technologies, I am also highly skilled in backend and full-stack development. Skills & Expertise: Frontend: React, JavaScript, Next.js, Angular, Vue.js, Scss, Tailwind CSS, CSS, HTML, Bootstrap, Canvas Backend: Node.js, Nest.js, Express.js, RESTful APIs, Socket.io Databases: MongoDB, PostgreSQL Languages: TypeScript, Python, GoLang, C++, Rust, Move, C# Frameworks: Django, MFC Blockchain & Smart Contracts: Solana, DeFi, dApps, Trading Bots, Solana Smart Contracts, Bitcoin Ordinal, SUI AI & Networking: Simple AI Networking Task for student DevOps: Extensive experience in building scalable deployment systems. Notable Projects: Job Portal System, Booking Platform, Social Media Platform, Trading Management System, Employee Management System, E-Commerce Sites & Shopping Projects, Personal Blog & Portfolio, React Movie Search App, Next.js Portfolio I have also worked on Solana-based trading bots, smart contracts, DeFi apps, and dApps, as well as automating processes using Telegram bots. Additionally, I have experience with Bitcoin Ordinal and SUI for blockchain-based solutions. I can offer you folloings. High-quality, responsive frontend design to deliver great user experiences. Scalable and secure backend systems built for performance. Blockchain expertise for decentralized apps, smart contracts, and crypto-related solutions. AI networking solutions and DevOps to ensure smooth deployments and continuous integration. I focus on building strong, long-term relationships with my clients, ensuring that their needs are met while maintaining open communication and trust. I value working with clients who prioritize quality and communication. I am also happy to take on projects with a higher budget, as I believe in delivering exceptional results that align with the client’s goals. Let’s collaborate to turn your ideas into reality with innovative, reliable, and scalable solutions. weniger
nguyenn303
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Schreiben von Forschungsarbeiten, Berichterstellung, Wissenschaftliches Schreiben, Aufbereiten von Daten, HTMLBusinesses today don’t just need apps—they need smart digital solutions that streamline workflows, automate tasks, and deliver real value. I help businesses build scalable web and mobile applications while also supporting them with high-quality technical and business writing. I specialize in developing modern mobile...Businesses today don’t just need apps—they need smart digital solutions that streamline workflows, automate tasks, and deliver real value. I help businesses build scalable web and mobile applications while also supporting them with high-quality technical and business writing. I specialize in developing modern mobile and web applications combined with AI automation and chatbot systems that improve customer engagement and operational efficiency. My expertise includes: • Web and Mobile App Development (React Native, Flutter, Android, iOS) • Full-stack Web Development with scalable backend systems • AI Chatbots for websites, WhatsApp, Slack, Discord, and mobile apps • AI automation workflows using n8n, Make.com, and Zapier • LLM integrations (OpenAI, Claude, etc.) for intelligent applications • Technical Writing for software documentation and systems • Business Writing, content writing, and project documentation I work with technologies such as Python, Node.js, React Native, Flutter, and modern APIs to deliver reliable and production-ready solutions. My goal is simple: build powerful web and mobile applications, automate business processes with AI, and provide clear, professional writing that supports products and businesses. If you're looking to build a web or mobile app, integrate AI automation, deploy AI chatbots, or need professional technical or business writing, I can help turn your ideas into practical and scalable solutions. weniger
GameOfWords
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I specialize in Web Development, Mobile App Development, Artificial Intelligence, Machine Learning, and Unity (2D/3D) development. With a strong problem-solving mindset and hands-on experience across modern frameworks and tools, I develop secure, scalable, and innovative applications tailored to client needs. My goal...I specialize in Web Development, Mobile App Development, Artificial Intelligence, Machine Learning, and Unity (2D/3D) development. With a strong problem-solving mindset and hands-on experience across modern frameworks and tools, I develop secure, scalable, and innovative applications tailored to client needs. My goal is to build solutions that are not only functional but also future-ready 1. Web Development (Full-Stack) -Frontend Development React.js / Next.js Vue.js Angular HTML5, CSS3, Tailwind, Bootstrap TypeScript & JavaScript (ES6+) Responsive & Mobile-First Design SEO Optimization Performance Optimization -Backend Development Node.js (Express / NestJS) Python (Django / FastAPI) PHP (Laravel) Java(Spring Boot) RESTful API Development GraphQL Authentication (JWT, OAuth) Payment Integration (Stripe, PayPal) WebSockets / Real-time apps -Database Management MongoDB PostgreSQL MySQL Firebase Redis Database Design & Optimization -Deployment & DevOps AWS Google Cloud Docker CI/CD Pipelines Nginx VPS Deployment 2. Mobile App Development -Cross-Platform Flutter React Native Expo Firebase Integration -Native Development Android (Java) iOS (Swift) -App Features Push Notifications In-App Purchases API Integration Google Maps Integration Social Login App Store / Play Store Publishing 3. AI & Machine Learning -Machine Learning Supervised & Unsupervised Learning Regression, Classification, Clustering Model Training & Evaluation Scikit-learn -Deep Learning PyTorch CNN, RNN, LSTM -NLP Chatbot Development Sentiment Analysis Text Classification OpenAI API Integration LLM Applications -Computer Vision Object Detection Image Classification OpenCV -Data Science Pandas NumPy Data Visualization (Matplotlib, Seaborn) Data Cleaning & Preprocessing 4. Unity Game Development Unity 2D & 3D Development C# Programming Physics & Animation Systems Game Mechanics & Gameplay Design UI/UX for Games weniger
Xakimbek007
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danielboggs danielboggs
$60 USD / Stunde
Exceed Your Expectation! Let's Do It Together!!United StatesWe deliver custom software solutions across AI, web, mobile, e-commerce, blockchain, and automation. Our team brings 10+ years of experience designing and developing scalable digital products for startups, growing businesses, and modern online platforms. What we do: • AI automation and business workflow...We deliver custom software solutions across AI, web, mobile, e-commerce, blockchain, and automation. Our team brings 10+ years of experience designing and developing scalable digital products for startups, growing businesses, and modern online platforms. What we do: • AI automation and business workflow systems • Custom web and mobile app development • E-commerce platforms and custom store functionality • API development and backend integration • Blockchain applications and smart contract solutions • UI/UX-driven product implementation • Performance tuning, monitoring, and system improvement • QA, security, and CI/CD processes We believe strong products come from clear communication, practical engineering, and consistent execution. Our goal is to build solutions that are not only functional, but dependable, scalable, and ready for real business use. weniger
danielboggs
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