Hire the Best API Developers
in Portugal
Lisbon, Portugal
I help startups and established teams build AI-powered automations and full-stack SaaS platforms that scale operations, cut manual work by up to 80%, and generate real business growth, not vanity features. With 10+ SaaS products launched, generating over $15,000/month collectively, and over 18+ 5⭐️ reviews here on Upwork, I know what it takes to turn ideas into profitable, scalable systems powered by automation and smart AI integrations. What I Build 🔹 AI Automation & Workflow Systems n8n, Make.com (Integromat), Zapier – fully automated, cross-platform workflows AI Chatbots & Agents (OpenAI, Claude, Gemini, LangChain, LangGraph) Lead generation bots, follow-up automations, CRM syncing OCR + data extraction from invoices, IDs, and documents Voice & WhatsApp AI agents powered by Twilio + LLMs 🔹 Full Stack Development (Frontend + Backend) Next.js / React / Node.js / Express / Laravel Multi-tenant SaaS apps, marketplaces, CRMs, dashboards RESTful + GraphQL APIs, secure auth (JWT, Sanctum, OAuth) Scalable architectures with Docker, AWS, DigitalOcean, Vercel Real-time features with WebSockets and Redis 🔹 AI-Driven SaaS Platforms End-to-end SaaS automation (billing, onboarding, roles, analytics) Custom AI pipelines (RAG, embeddings, Pinecone, Supabase) Content automation: emails, blogs, posts, and media workflows Workflow tracking dashboards with alerts & reports 🧠 Tech I Work With AI/LLMs: OpenAI GPT-5, Claude, Gemini, Hugging Face, LangChain, Flowise Automation: n8n, Make.com, Zapier, GoHighLevel Backend: Node.js, Express.js, Laravel, NestJS Frontend: React, Next.js, Tailwind, TypeScript Database: PostgreSQL, MySQL, MongoDB, Pinecone, Supabase DevOps: Docker, AWS, DigitalOcean, Vercel, GitHub Actions If you’re ready to automate workflows, build scalable SaaS products, or integrate AI into your business operations — I’ll help you design, build, and deploy systems that work while you sleep. Message me today, and let’s turn your idea into an automated growth engine. 🔍 Keywords for Search: AI Developer | AI Automation | Machine Learning | Agentic AI | LLM | LangChain | RAG | GPT-5| MERN Stack | Full Stack Developer | Gemini | Workflow Automation | n8n | Make.com | Zapier | API Developer | SaaS Expert | Semantic Search | Pinecone | CRM Automation | Chatbot Developer | CI/CD | DevOps | AWS | MCP Server | No-Code Automation | Voice Agents
- Web Application Development
- SaaS Development
- SaaS
- Mobile App
- Mobile App Development
- Web & Mobile Design Consultation
- AI Agent Development
- AI Consulting
- Business Process Automation
- Task Automation
- Automation
- ML Automation
- Build Automation
- Marketing Automation
- AI Model Development
Funchal, Portugal
⭐ Fractional CTO & Technical Advisor helping SaaS startups build, ship and grow AI-powered products - from MVP to enterprise. 🚀 Harvard-certified AI Developer | 10+ years Full Stack Development | Senior React, Python & Node.js Engineer 🏆 100% client satisfaction | $1M+ saved via AI workflows | 40+ projects: FinTech, Healthcare, EdTech, LegalTech & SaaS 🎯 WHO I AM & HOW I HELP I'm a Fractional CTO and AI architect who partners with SaaS founders and non-technical CEOs to turn product vision into production-ready software. I bridge strategy and engineering - right architecture, right team, right AI integrations, without a full-time CTO cost. I solve problems like: → "We need a SaaS product but have no technical co-founder" → "We want to integrate LLMs, RAG, or AI automation but don't know where to start" → "Our architecture won't scale and development is too slow" → "We need to modernize our stack and migrate to AWS or Azure" 🏅 MY EXPERTISE Case 1 - Fractional CTO for a LegalTech SaaS (200+ law firms) Built multi-tenant SaaS: NestJS, Next.js, React, TypeScript, PostgreSQL, Azure. Designed an AI Augmentation Layer: document extraction (Azure Document Intelligence), RAG research (vector store), AI-assisted drafting, workflow automation. Managed infra with Terraform and led architecture as Fractional CTO & Solution Architect. Case 2 - Technical Advisor for a Healthcare Monitoring Platform Built compliance-grade SaaS: Python, FastAPI, PostgreSQL, WebSocket alerts. Frontend: React. HIPAA/GDPR compliance, Docker CI/CD. Advised on ML pipelines, computer vision models and served as AI Consultant & Virtual CTO. Case 3 - Full Stack AI Developer for an EdTech LMS Built an LMS: React, TypeScript, Supabase, AWS (Cognito, Lambda). Implemented NLP personalization, AI Models for recommendations and a Moodle chatbot plugin. Focus: LMS integrations and data-driven learning. Case 4 - Technical Advisor for a FinTech AI Startup Led engineering: NestJS, Azure SQL, Service Bus. React frontend, AI content personalization, gamification. Delivered Product Development & Project Management as Solution Architect & AI engineer. Case 5 - AI Engineer: RAG, NLP & Speech Systems Built RAG knowledge platforms (Pinecone, OpenAI), speech intelligence (Deepgram, LangChain, FAISS), CRM automation (Anthropic/Claude). Delivered AI Agent Development, Agentic AI patterns and AI Model Integration. Case 6 - Full Stack Engineer for CRM & Auth Platform Microservices: gRPC, MongoDB, Neo4j. Multi-tenant auth with Azure AD. Acted as full stack developer and Cloud Architect advisor, improving data analysis pipelines. ⚡ WHERE I CAN BE HELPFUL ✅ Fractional CTO - strategy, leadership, team building for SaaS startups, virtual CTO services ✅ Technical Advisory - code audits, architecture reviews, cloud migration (AWS/Azure), Cloud Architect guidance ✅ Full Stack Development - React, Next.js, Node.js, Python, TypeScript, JavaScript, Typescript, React Native, React for mobile and Web development ✅ AI & LLM Integration - RAG, LLM agents, NLP (Natural Language Processing), Computer Vision, ML, chatbots, Generative AI, AI Agent Development ✅ SaaS Architecture - multi-tenant, API-first, compliance, scaling, Software Architecture & Design ✅ Data & Analytics - SQL, pipelines, data visualization, ML analytics, data science, data analysis ✅ DevOps - AWS, Azure, Terraform, Docker, ArgoCD, CI/CD, Firebase support for mobile/web ✅ Mobile App Development - React Native, Android App Development, cross-platform SAAS mobile features 👨🏻💻 TOOLS & TECHNOLOGIES Frontend: React, Next.js, Angular, Vue.js, HTML, CSS, JavaScript, TypeScript, Tailwind, MUI, React Native Backend: Node.js, NestJS, Express, Python, FastAPI, Django, Flask, GraphQL AI/ML: GPT, Claude, RAG, LangChain, Pinecone, FAISS, NLP, Deepgram, PyTorch, TensorFlow, ML, Deep learning, Deep Neural Network Cloud: AWS (Cognito, Lambda, EKS, S3), Azure (AI Foundry, Document Intelligence, APIM), Amazon Web Services, DB: PostgreSQL, MongoDB, SQL, Neo4j, Pinecone, Qdrant DevOps: Docker, Terraform, Pulumi, ArgoCD APIs: OpenAI, Anthropic, Stripe, Pipedrive, MS Graph, REST, GraphQL, gRPC 🔄 HOW WE WORK TOGETHER 1. Discovery Call (Free) - We discuss goals, challenges and product vision 2. Technical Audit & Roadmap - I review your stack and deliver a clear plan (Product Development, Solution Architecture, AI Development scope) 3. Build & Ship - Weekly milestones, production-quality code (AI Automation, agentic workflows) 4. Scale & Optimize - Performance tuning, AI automation, cost reduction, growth prep 🟢 CORE FOCUS AREAS • SaaS product development (multi-tenant, API-first, AI-native) • AI-powered business automation (LLMs, RAG, NLP, workflows) • Healthcare & MedTech (compliance, real-time monitoring, HIPAA/GDPR) • LegalTech (document intelligence, workflow automation, AI research) • EdTech & LMS platforms (ML, personalized learning, analytics) • API integration & platform scaling (CRM, ERP, real-time sync)
- JavaScript
- Node.js
- Python
- Artificial Intelligence
- Machine Learning
- Data Science
- React
- SaaS
- TypeScript
- React Native
- AI Development
- Software Architecture & Design
- Product Development
- Mobile App Development
- Natural Language Processing
- AI Agent Development
- AI Model Integration
- Amazon Web Services
- Learning Management System
- Firebase
Montijo, Portugal
Looking for an Expert WordPress Developer? I specialize in creating lightning-fast, SEO-optimized, mobile-responsive WordPress websites tailored to your brand and business goals. With a 100% Job Success Score on Upwork and over 50+ WordPress projects completed in the last 6 months, I deliver custom WordPress development, speed optimization, and scalable solutions for businesses of all sizes. Whether you need a custom WordPress theme, WooCommerce integration, or Figma to WordPress conversion, I’ve got you covered. ✅ What I Specialize In: Custom WordPress Development (ACF, Gutenberg, Elementor, WPBakery) Page Speed Optimization (GTmetrix, Google PageSpeed Insights) WooCommerce Store Setup & Customization Figma/PSD/HTML to WordPress Conversion On-Page SEO (Yoast, schema, alt-tags, semantic HTML) Website Redesigns & Responsive UX Security, Malware Cleanup & Backup Why Work With Me? 🔹 Top-Rated Plus on Upwork – Trusted by global clients 🔹 100% Job Success – Proven reliability and quality 🔹 End-to-End Delivery – From planning to deployment & optimization 🔹 Fast Communication – Clear updates, on time WordPress Services Offered: 🛠️ WordPress Theme Development ⚙️ Plugin Integration & Setup ⚡ Speed Optimization & Lazy Load Setup 🎨 Elementor, Gutenberg & WPBakery Layouts 🧾 ACF Pro for Custom Layouts 🧼 Website Cleanup, Debugging, Bug Fixes 🔄 Migrations, Domain Transfers, Hosting Setup 🛒 WooCommerce Product & Checkout Customization 🧩 Page Builder Custom Layouts 🧭 Technical SEO for Better Search Visibility Tools & Technologies: WordPress, PHP, HTML5, CSS3, JavaScript, ACF, Elementor Pro, Yoast SEO, GTmetrix, Google Search Console, MySQL, WP Rocket, WooCommerce Let’s build something powerful together. Send me a message today and I’ll help turn your WordPress vision into a high-performing, SEO-friendly reality. — Manraj Sandhu Top-Rated Plus WordPress Developer Other Skills: WordPress, WordPress website, WordPress developer, WordPress designer, WordPress expert, freelance WordPress developer, hire WordPress developer, custom WordPress developer, WordPress website developer, WordPress web developer, WordPress development services, WordPress design services, professional WordPress developer, experienced WordPress developer, affordable WordPress developer, WordPress full stack developer, WordPress frontend developer, WordPress backend developer, WordPress plugin developer, WordPress theme developer, WordPress customization expert, WordPress specialist, WordPress consultant, certified WordPress developer, best WordPress developer, WordPress developer for hire, WordPress website design expert, WordPress site designer, WordPress UI designer, WordPress UX expert, WordPress Elementor developer, WordPress Gutenberg expert, WordPress ACF developer, advanced WordPress developer, WordPress troubleshooting expert, WordPress speed optimization expert, WordPress SEO expert, WordPress eCommerce developer, WordPress WooCommerce developer, WordPress online store expert, WooCommerce WordPress expert, WordPress security expert, WordPress performance expert, WordPress mobile optimization expert, WordPress migration expert, WordPress API developer, WordPress API integration expert, WordPress REST API developer, WordPress front-end expert, WordPress back-end expert, WordPress support expert, WordPress maintenance expert, WordPress website builder, WordPress layout designer, WordPress CMS expert, WordPress bug fix expert, WordPress site repair expert, WordPress revamp expert, WordPress theme customization expert, custom WordPress designer, WordPress website revamp expert, responsive WordPress developer, WordPress child theme developer, WordPress hosting expert, WordPress multisite developer, multilingual WordPress expert, WPML WordPress developer, WordPress booking system expert, WordPress blog developer, WordPress landing page designer, WordPress contact form expert, WordPress speed expert, WordPress developer USA, WordPress expert UK, WordPress developer Australia, local WordPress developer, WordPress website freelancer, WordPress web design expert, WordPress redesign expert, WordPress clone developer, WordPress site transfer expert, WordPress backup and restore expert, WordPress theme developer for hire, custom WordPress theme expert, WordPress CSS expert, WordPress HTML expert, WordPress JavaScript developer, WordPress PHP developer, WordPress MySQL expert, WordPress analytics expert, WordPress conversion expert, WordPress ecommerce site developer, WordPress frontend designer, WordPress dashboard customization expert, and WordPress full site editing expert.
- WordPress
- WordPress Development
- WordPress Website
- WordPress Website Design
- Elementor
- Website Redesign
- WordPress Landing Page
- PSD to WordPress
- WordPress Optimization
- Ecommerce Website Development
- WordPress e-Commerce
- WordPress Bug Fix
- WordPress Theme
- Website Builder
- Page Speed Optimization
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