Full Stack Developer + AI Automation Expert

@VianRey1

Juggling both web app development and workflow automation can quickly get overwhelming, especially when every integration and automation has to be rock-solid yet flexible for your business. Connecting React and Node apps to tools like n8n or Zapier and layering in OpenAI features is powerful, but messy workflows and unreliable automations make things slow and costly fast. With focused development and seamless automation, you’ll have responsive web applications that run smoothly, handle data reliably, and automate lead management and reporting without manual headaches. We’ll start by mapping out your core workflows and automation needs. Then I’ll build and connect your web application, APIs, and databases for clean, scalable performance. Finally, I’ll integrate AI features and automate your data flows, notifications, and reporting for hands-off efficiency. Are there any existing tools or platforms you want to keep using as part of this new setup?

@mickeysz

Hallo, Sie wollen jemanden, der Entwicklung und Automatisierung komplett übernimmt, also gehe ich dorthin, wo diese Projekte wirklich entschieden werden: nicht in den Happy Path, sondern in das, was passiert, wenn ein API-Aufruf fehlschlägt, und bei echtem Volumen tut das irgendwann einer. Ein Rate-Limit, ein Timeout, ein doppelt zugestellter Webhook. Ein naiver n8n- oder Make-Flow verliert dann einen Lead oder zählt ihn doppelt, und Sie merken es erst, wenn die Zahlen schon falsch sind. Deshalb bekommt jeder externe Aufruf Retry mit Backoff, und jeder Schreibvorgang ist idempotent, mit Schlüssel auf der Datensatz- oder Event-ID, sodass eine erneute Zustellung aktualisiert statt dupliziert. Fehler landen in einer sichtbaren Dead-Letter-Tabelle mit Payload, nicht in einem stillen Ausfall. Wo KI im Spiel ist, entwirft und klassifiziert das Modell, es entscheidet aber keine Fakten. Werte, die ins CRM geschrieben werden, werden vorher validiert, und Unsicheres geht an einen Menschen statt live. So bleibt die Automatisierung verlässlich. Als eine Person über Frontend und Automatisierung liefere ich Features als vertikale Scheibe, React oder Next mit Node dahinter, ohne Übergabeverluste. Eine Frage: Welcher wiederkehrende Prozess ist gerade am schmerzhaftesten, Lead-Management, Benachrichtigungen oder Reporting? Ich beginne dort, wo es am meisten löst, statt alles auf einmal zu verdrahten.

@naminghn

Hi there, I see you're looking for a Full Stack Developer to handle web applications and automation workflows using technologies like React, Node.js, and integration with third-party APIs. Given my hands-on experience with these stacks, I can start by building responsive applications tailored to your business logic. I can also implement the necessary automation using n8n or Zapier to streamline your workflows effectively, including managing lead data and notifications. I would like to clarify a couple of points: are there specific third-party tools or CRMs you will be integrating with, and do you have existing data workflows that need to be automated? I'm eager to ensure we streamline the development process to meet your needs. Looking forward to discussing this further. Regards, Ali

@mubeenm5026

As a Full Stack Developer with extensive experience in Node.js and React.js, I find the objective of your project incredibly invigorating. Having handled multiple projects involving full-stack development and automation, I am well-equipped to take ownership of the complete development process, delivering clean, scalable, and reliable solutions - just what you need. Our proficiency in AI-powered solutions makes us stand out from the rest. We're comfortable integrating OpenAI/Claude APIs and AI-powered features while leveraging our knowledge of tools like n8n, Make, or Zapier for creating automation workflows. Moreover, our understanding of databases, webhooks, and third-party integrations proves valuable in ensuring smooth connectivity across all crucial endpoints of your web application. Collaborating with Web Crest grants you access to a seasoned team familiar with handling diverse technologies like yours. Our track record speaks for itself: we've successfully turned countless complex ideas into scalable digital products for startups, SMEs, and enterprises alike. So let's turn your vision into reality! Reach out to us so we can begin building something exceptional together that'll set your business apart.

@melopgabriel

Hi, The biggest risk in projects that combine React/, Node.js and AI automation is brittle integrations: inconsistent webhook payloads, missing idempotency, and unhandled rate limits that break lead flows and reporting. I prioritize contract-first APIs, schema validation, and retry/queue patterns to prevent that failure mode. I built three recent systems that match your stack: a lead management portal with React/ and Node.js backed by PostgreSQL that automated lead assignment and notifications using n8n; a data enrichment and reporting pipeline that consumed webhooks, normalized records, and called OpenAI/Claude for summarization and intent classification before writing results to MySQL; and a cross-CRM connector that used Make to sync contacts, create tasks, and trigger email/SMS notifications while preserving deduplication and audit logs. In each project I implemented REST APIs, webhook receivers, database migrations, and monitoring so automation runs were observable and recoverable. My first step is a short discovery and integration audit: capture current APIs/webhooks, define schemas, and deliver a working POC that routes one lead source through an automation workflow into your CRM with OpenAI/Claude enrichment and test coverage. I use unit and integration tests for backend services, runtime health checks for workflows (n8n/Make/Zapier), and staged deployments to catch issues before production. What I will deliver: production-ready React/ frontend components, Node.js REST APIs, database schema and migrations (Postgres/MySQL), connected automation flows in your chosen tool (n8n/Make/Zapier), OpenAI/Claude integration for AI features, and deployment scripts with monitoring and rollback. - Which automation tool do you prefer for orchestration: n8n, Make, or Zapier? - Can you share the top two systems you need integrated first and whether you have existing API keys/webhook docs? Thank you, @melopgabriel

@AnumFatima210

Hi, I went through your project details and understand what you're looking to achieve. I'd be interested in working with you on this. Based on the requirements you've shared, I can handle the project from start to completion while keeping the work aligned with your expectations, timeline, and desired outcome. My approach is straightforward: first, I'll make sure the requirements and expected deliverables are clear. Then I'll complete the work in structured stages, share progress along the way, incorporate your feedback, and deliver the final work after everything has been reviewed. Before we begin, I have a couple of questions about your requirements that will help me understand the scope more accurately. Feel free to message me so we can discuss the details and determine the best way to move forward. Best regards, Anum

@Jennycreation

Hello Sir, I have already worked on similar types of website and software development projects and I am confident that I can successfully handle your project. I am a full-time freelancer with **17+ years of experience** in web development, software development, automation, and API integrations. My expertise includes: * ASP.NET C# web and software development * Android app development * Python automation and web scraping (Amazon, Instagram, Facebook, Google Maps, LinkedIn, Telegram, and other custom scraping solutions) * JavaScript, jQuery, AJAX, Bootstrap, HTML5 * Microsoft SQL Server database development * Payment gateway integration * SMS, Email, Banking, Financial, and Insurance API integration * Custom automation bots and workflow automation software I focus on delivering **high-quality, scalable, and reliable solutions** with clean code and long-term support. Please contact me in private chat so we can discuss your requirements in detail. I can also show you a **demo of similar projects** I have completed. Looking forward to working with you. Thanks & Regards

@muhammadsaad90

Hi, What specific business workflows do you need automated? I’m excited about the opportunity to help you build and maintain your web applications. With over 5 years of experience in Full Stack Development, I’m skilled in React, Node.js, and API integrations. For your project, I can develop responsive web apps, create robust REST APIs, and design database solutions with PostgreSQL or MySQL. I’m also proficient with n8n and Zapier for automation. Integrating OpenAI APIs to implement AI features is right up my alley. My recent projects include a comprehensive CRM automation using Zapier and a lead management system with React and Node.js. I can ensure clean, scalable, and reliable solutions throughout the development process. Let’s connect to discuss your requirements in detail!

@matthewr254

Hi, The biggest risk for this project is coupling AI automations directly to fragile third-party webhook payloads, which can break lead flows and cause lost notifications. I mitigate that by normalizing incoming webhooks into strict schemas and adding lightweight replay and validation layers before they touch core services. I have built full stack apps using React and Node.js with PostgreSQL backends and integrated AI APIs into business workflows. Recent relevant work includes: a lead-management portal where I implemented React frontend, Node.js REST APIs, PostgreSQL schemas, and n8n flows to route and enrich leads using OpenAI for classification and summary; an internal reporting tool that ingests webhook events from 5 CRMs, deduplicates records in Node.js, stores canonical rows in MySQL, and uses Make to push notifications and weekly reports; and an automation suite that connected third-party APIs via webhooks, applied AI-powered extraction, and sent staged notifications to sales reps. My first step is to define the canonical data model for leads and a webhook contract tester so we can onboard integrations safely. I will then implement the Node.js REST endpoints, React UI slices for lead views, and build n8n/Make workflows that call OpenAI/Claude only where they add measurable value (classification, enrichment, summaries). - Do you have a current list of CRMs, webhook providers, and sample payloads I can use to draft schema tests? - Which AI features matter most initially: classification, summarization, response generation, or data extraction? Happy to hop on a brief call whenever it suits you. Matthew Reese

@obademio1

Hi, hope you are well. I have read the details you shared and I understand the outcome you want. I am a skilled freelancer with 10+ years of experience in Node.js, React.js, Full Stack Development, API Integration and I have completed similar projects. Visit my profile to check my latest work and reviews from past clients. Looking forward to working with you, connect in chat. Best regards, Olusoji

@ozair94

Hi, Your project doesn't need someone who simply follows the brief. It needs someone who understands what you're trying to achieve and figures out how to get you there. That's how I approach projects. Before writing code or jumping into execution, I want to understand the problem, the goal, and what success actually looks like for your business. I've spent the last several years turning business problems into working digital products, leading developers and designers, managing projects from idea to delivery, and delivering 40+ web and mobile projects. Do I know everything? Absolutely not. But I know how to solve problems. If I don't have the answer, I'll find it. I'll research, learn, test, ask the right questions, and keep working until we have a solution. And once I'm on board: It's our business. Our problem. Our responsibility. I'll give you my honest opinion, challenge ideas when I see a better approach, and never agree just for the sake of keeping things comfortable. I work with clients because I care about building things that succeed. If you're looking for someone who will take ownership rather than simply complete tasks, I'd be happy to learn more about what you're building.

@mozamh91

Hi, Most of my recent work sits where web apps, APIs and automation meet, so this role lines up closely with what I do every day. Three relevant projects: HubSpot to PostgreSQL pipeline: a Python service on a DigitalOcean VPS that pulls deals, contacts, calls, emails and association tables from the HubSpot API every night into a PostgreSQL model I designed. It feeds Metabase dashboards and alerts for the sales team. Twilio and HubSpot CTI integration: a custom calling app that connects Twilio to HubSpot through webhooks, with call transcription logged back to the right CRM records. AI agents with n8n and Make: a WhatsApp support agent where clients create and track Jira tickets, an appointment booking agent on n8n and GoHighLevel, and n8n lead scoring workflows that rank incoming leads for sales reps. I have also built an AI lead classification pipeline with Clay, Perplexity and Python, and worked with OpenAI, Gemini and Groq APIs. My stack is Node.js, Python, JavaScript/TypeScript, PostgreSQL and MySQL, deployed on Ubuntu servers with Docker. My strongest side is backend, integrations and automation, and my QA background means I test with Playwright before anything reaches production. Is this a new build or an existing app you want extended? If you share the workflows you want automated first, I can outline an approach. Moizam

@shahriara1

As a Full Stack Developer with solid experience in API Integration and Node.js, I believe I'm the perfect match for your project. My track record revolves around crafting scalable web applications using Laravel, PHP, & JavaScript. Over the years, I've amassed invaluable knowledge in leveraging APIs to automate business processes, an essential quality you're seeking. In terms of automation tools, I may not have direct hands-on experience with n8n, Make or Zapier but my expertise in developing REST APIs and backend services will enable me to navigate these platforms quickly. Moreover, I'm a fast learner who's constantly upgrading my technical skills to stay relevant and effective in my field. I guarantee that this will not impede my ability to successfully integrate AI Automation workflows and deliver exceptional results. Lastly, what sets me apart as a candidate is my affinity for accuracy and precision when handling data management tasks such as lead management and reporting. This skill database design and integration using PostgreSQL/MySQL is an added value for your project. By entrusting me with your full stack development and AI Automation needs, you're choosing someone deeply invested in delivering clean, scalable and reliable solutions on time. Let’s connect our expertise to bring your vision to fruition!

@wixdek

The challenge you face is the need for a cohesive web application along with effective automated workflows that streamline your business processes. The goal is to enhance operational efficiency and user engagement through responsive web solutions and AI-powered integrations. There’s a strong emphasis on building scalable and reliable full-stack applications, which require not just coding expertise but also an understanding of automation workflows and third-party integrations. The implementation plan would include: 1. Initial consultation to outline specific features and workflows. 2. Development of the web application using React.js and Node.js. 3. API integrations to enable seamless interaction between your systems and third-party services. 4. Establishment of automation workflows that connect with tools like n8n, Make, or Zapier for enhanced efficiency. 5. Comprehensive testing and deployment. What specific workflows do you envision automating in your business processes? Once we clarify this, we can discuss the next steps towards a successful collaboration.

@richardb063

Hi, starting with your React and Node codebase and the automation workflows you need built. Delivering web applications where AI features and business automations work reliably in production is the goal. Previously I built n8n workflows where CRM updates, notifications, and AI API calls all had to run unattended without silent failures. I would handle the frontend, the REST APIs, the database, and the third party integrations as one system rather than separate pieces. I am determined to win this project and confident I can deliver high quality results within your deadline if awarded, and I can share relevant automation projects when we talk. Talk soon.

@rubina131

Hi, I am excited about the opportunity to work as your Full Stack Developer and AI Automation Expert. With over 5 years of experience in developing scalable web applications and integrating AI solutions, I am well-equipped to meet your project needs. I will leverage my expertise in Laravel, Node.js, and React to build robust features tailored to your specifications. My approach includes: - Developing a user-friendly interface with React.js for seamless interaction. - Implementing a secure backend using Laravel and Node.js to ensure data integrity. - Integrating AI automation features to enhance user experience and streamline processes. - Creating RESTful APIs for smooth communication between the frontend and backend. I focus on delivering clean, maintainable code that aligns with your business objectives. My commitment to understanding your requirements ensures that the solutions I provide are practical and effective. Let’s collaborate to turn your vision into a reliable, scalable application that meets your needs. Best regards, Rubina

@nomanq23

I understand what you need and can start with a clear plan to reach your goals. With over 12 years of experience in Digital Marketing, SEO, Google Ads, AEO, GEO, Web Development and AI visibility, I’m Noman. I’ve completed 100+ Digital Marketing, SEO, AEO and GEO projects, helping businesses improve online visibility, attract qualified leads and increase conversions. I have also developed 500+ WordPress/WooCommerce websites, 100+ Wix websites, 100+ Shopify stores and applications, 50+ Squarespace websites, and integrated 100+ Stripe payment solutions. You can visit my profile to check my latest work and recent reviews. Looking forward to working with you, connect in chat. Thank you, Noman

@rishikeshr33

The interesting part of this role isn't just building React screens or wiring APIs. It's connecting the application, AI layer, third-party services, and business workflows into one reliable system. Relevant work Sahadar Shield Built a full digital ecosystem with a customer app, portal, staff dashboard, admin dashboard, authentication, database backend, and operational workflows. AI Instagram Appointment Booking Built an n8n-powered AI assistant that handled customer conversations, collected booking details, checked calendar availability, and scheduled appointments automatically. WhatsApp Feedback Automation Built a WhatsApp workflow connecting billing software, webhooks, customer feedback, and Google Reviews, with automated routing based on customer responses. Budget Your $30–$250 range works. Once I understand the first application/workflow and scope, I can give you a precise quote. How I'd work I'd keep clear boundaries between frontend, backend APIs, database, AI services, and automation workflows, with webhooks and integrations designed to be maintainable rather than a collection of brittle automations. A simple way to start We can begin with one core application flow and its automation as the first milestone, so you can evaluate the implementation before expanding. Tell me the first workflow you'd like automated and the current stack/accounts, and I'll map out the implementation.

@WebXcellance

Hi there, I am ready to work on your **Full Stack development and AI automation project**. I have strong experience in **PHP, Laravel, CodeIgniter, React, Vue.js, JavaScript, MySQL, REST APIs, HTML and CSS**, and can work across both frontend and backend development. I can help build responsive web applications, develop REST APIs, integrate databases and connect third-party services through APIs and webhooks. I can also work with AI API integrations and automation workflows based on your business requirements. I can handle: * React-based responsive web applications * Backend/API development * MySQL database design and integration * REST API and webhook integrations * Third-party service/API connections * Lead management and notification workflows * Data processing and reporting automation * Testing, debugging and deployment support * Clean and maintainable application architecture I am comfortable taking ownership of tasks from development through testing and deployment. I have worked on multiple PHP/Laravel, WordPress and React-based projects, including custom APIs and business workflow integrations. Please share your existing application details and workflow requirements so I can understand the scope and start quickly. Thanks,