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If you are looking for a reliable and innovative Full Stack Web developer, I am happy to help you with my web development skills to achieve your business and technology goals. My core strengths are in building user-centric and scalable web applications with the most popular stack - ReactJs, Angular, Svelte, NextJs, Node.js, Three.js, Express.js, HTML, CSS, Firebase and REST API. Integration, SaaS, and Automation are the most desirable functions for any business application and I am fortunate to have good experience in these areas as well as Zapier, Payment Gateways (Paypal, Stripe), SMS platforms (Twilio, Plivo), Customer Support (Zendesk) and developing cloud functions in AWS and GCP for various automation needs. My Key Skills are the following: Frontend ○ Angular ○ React ○ NextJs ○ Vite ○ HTML, CSS, JAVASCRIPT, TYPESCRIPT ○ Three.js ○ Tinymce ○ Tailwind CSS ○ Jquery ○ Firebase (Auth, Firestore, Realtime Database, Functions, Storage, Cloud Messaging FCM, Dynamic Links, Crashlytics, Hosting) ○ PWA ○ Polotno SDK ○ NuxtJS ○ Dynamic Form Builder ○ Localization using i18next Backend ○ NodeJS ○ ExpressJS Database ○ Firestore ○ Mysql ○ Sqllite ○ MongoDB ○ Postgresql Google Cloud ○ Cloud Task, Cloud Run, Cloud Functions ○ Cloud Scheduler ○ Cloud Deploy, Cloud Build, Cloud Repository ○ Cloud Storage ○ Cloud SQL Amazon Web Services (AWS) ○ Amazon S3 ○ EC2 ○ CloudFront ○ Amazon Route 53 ○ amazon rds AI Integration ○ Ai models (chatGpt , Gemini , claude ai , Llama ) ○ Vector DataBases (PineCone, chroma Db) ○ Hungging face model integrations ○ Ai Chat Bot Creations 🔰 API Integrations: ○ Google Sheet, Google Drive, Gmail ○ Google App Script ○ Shopify ○ Plaid API Integration ○ SMTP (Nodemailer) ○ Plivo ○ Zendesk ○ eFax ○ Quickbase ○ Payment Integrations - Stripe, Paypal, Recurly ○ OAuth2 Integration ○ Ffmpeg ○ Puppeteer (Web Automation) ○ Social Auth (Google, Facebook, Github, LinkedIn, Microsoft, Twitter) ○ Phone Number Authentication Server Management ○ Web Hosting ○ Ngnix ○ Letsencrypt During my tenure of 5+ years as a developer, I have helped many clients build their business applications from scratch which include Corporate Websites, Online Stores and Custom applications / PWA for HealthCare communication, Utilities job management, Product Label Design & Printing, Affiliates Commission Tracking, Real Estate Lease management, Business Funding Application and the list keeps going. I can also develop Desktop apps using Electron JS. Let’s have a quick chat to discuss your ambitious project and I’ll leave no stone unturned to make it a reality. Thanks

Backend Developer Specialist Expert with 8+ years of professional experience in industry, with special expertise below: Language: Nodejs, Nestjs, React, PHP Framework: Featherjs, SailsJs, Loopback, ExpressJS, NestJs, hapijs, fastify, angular, react, electron Design Pattern: MVC, OOP, Methodology: Agile, Scrum, JIRA, Gitflow Tools: Bitbucket, Gitlab, github. Database: mongodb, postgre, mysql, redis, elastic, Firebase Cloud & DevOps: AWS: Cognito, Lambda, EC2, ECS, S3, RDS, Amplify Vercel, Docker, Kubernetes, CI/CD ORMs: TypeORM, Prisma, Sequelize

I help SaaS startups build and scale AI-powered applications across web and mobile using React.js, Next.js, Node.js, Nest.js React Native(Expo), and OpenAI (RAG systems). Whether you’re adding AI features, dealing with messy architecture, or scaling beyond MVP — I design and build systems that are reliable, maintainable, and production-ready. 💡 What I Can Help You With • Build AI features (chatbots, copilots, automation workflows) • Develop RAG systems (vector databases, retrieval optimization, accuracy improvements) • Integrate OpenAI APIs into your SaaS product • Build scalable full-stack apps (Next.js, Node.js, Supabase) • Refactor messy codebases into clean, maintainable systems • Design SaaS architecture (multi-tenant, RBAC, billing systems) • Build AI-powered workflows using OpenAI & Claude, accelerated with tools like Cursor 📈 Real Impact • Built AI-powered features used in real production environments • Helped startups move from MVP → scalable, stable systems • Delivered web + mobile products used by real users • Improved performance, reliability, and long-term maintainability 🧠 Tech Stack Frontend: Next.js, React.js, TypeScript, Vue.js, Nuxt.js Mobile: React Native (Expo), Flutter, cross-platform architecture Backend: Node.js, NestJS, Python, APIs AI: OpenAI, RAG systems, vector databases Tools: Cursor, AI-assisted development workflows Database: PostgreSQL, Supabase, Redis Infrastructure: AWS, Docker ⚙️ How I Work I focus on: • Clean architecture → easier to scale and maintain • Performance → fast and reliable systems • Simplicity → avoid overengineering • Business outcomes → not just code Good systems don’t just work — they keep working as you grow. 🤝 Best Fit • SaaS startups adding AI features • Founders scaling beyond MVP • Teams with messy or fragile systems • Products needing production-ready AI integration 👉 If you need someone who can design and build AI systems end-to-end (web + mobile), I can help.

Hi there! I’m 𝗣𝗿𝗮𝘀𝗵𝗮𝗻𝘀𝗵𝗮 - a Full Stack Developer with 5+ years of experience delivering high-quality, cloud-native web applications. I specialize in building scalable solutions using AWS, GCP, and modern frameworks like React, Node.js, and Python. From frontend interfaces to backend systems and cloud architecture, I bring full-cycle expertise to every project. 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀: 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: React, TypeScript, JavaScript 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: Node.js, Express, Python 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: PostgreSQL, Redis, MongoDB 𝗖𝗹𝗼𝘂𝗱 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀: • AWS (Lambda, S3, API Gateway, ECS, DynamoDB) • GCP (Cloud Functions, Firestore, App Engine) 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 & 𝗣𝗿𝗼𝘁𝗼𝗰𝗼𝗹𝘀: REST APIs, WebSockets, Model Context Protocol (MCP) 𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲? • Proven track record building reliable, secure, and efficient systems • Deep experience with cloud-native services and multi-tenant SaaS platforms • Strong understanding of Model Context Protocol (MCP) for context-aware applications and scalable microservices • Clean, maintainable code and clear communication throughout every stage I’m passionate about solving real-world problems through tech and delivering results that truly make a difference. Let’s collaborate and bring your idea to life!

𝗘𝘅-𝗝𝘂𝘀𝘁𝗘𝗮𝘁 | 𝗘𝘅-𝗦𝘁𝗮𝗽𝗹𝗲𝘀 | 𝗘𝘅-𝗙𝗶𝗻𝘇𝗹𝘆 | 𝗧𝗼𝗽 𝟭% 𝗨𝗽𝘄𝗼𝗿𝗸 𝗧𝗮𝗹𝗲𝗻𝘁 | 𝗕𝘂𝗶𝗹𝘁 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 𝗳𝗼𝗿 $𝟮𝗕+ 𝗕𝗿𝗮𝗻𝗱𝘀 I optimize backend architecture, infrastructure cost, database performance, and cloud security for high-growth SaaS platforms. Previously Senior Engineer at JustEat, Staples, and Finzly. 9+ years building production systems at scale, supporting 100k+ active users. I design systems that directly improve business margins through performance, reliability, and cost efficiency. Impact: -42% Cloud Spend | 94% Faster Data Pipelines | $2B+ processed on systems I helped design and operate. 𝐈𝐍-𝐇𝐎𝐔𝐒𝐄 𝐒𝐀𝐀𝐒 𝐌𝐈𝐍𝐃𝐒𝐄𝐓 & 𝐓𝐎𝐓𝐀𝐋 𝐎𝐖𝐍𝐄𝐑𝐒𝐇𝐈𝐏 I operate like a technical co-founder, not a ticket-based freelancer. I take end-to-end ownership of architecture, scalability, and delivery. You define the business goal, and I design and implement the backend system to achieve it with minimal operational overhead and long-term scalability. From MVP to millions of users, I make architecture decisions based on performance, cost efficiency, and maintainability. 𝐏𝐄𝐑𝐅𝐎𝐑𝐌𝐀𝐍𝐂𝐄 & 𝐃𝐀𝐓𝐀 𝐄𝐍𝐆𝐈𝐍𝐄𝐄𝐑𝐈𝐍𝐆 If your system is slow or your cloud bill is increasing, I refactor architecture for both performance and cost efficiency. ◆ At Staples, reduced a core data pipeline from 90 minutes to 5 minutes (94% improvement) ◆ Optimized backend systems using caching, indexing, Kafka, and Redis to achieve millisecond-level latency ◆ Refactored legacy systems into scalable event-driven architectures where needed 𝐑𝐀𝐏𝐈𝐃 𝐌𝐕𝐏 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 (𝐀𝐈 𝐀𝐂𝐂𝐄𝐋𝐄𝐑𝐀𝐓𝐄𝐃) Need to launch fast? I combine AI-assisted frontend generation with production-grade backend architecture. Using tools like Lovable, Bolt.new, v0, Supabase, and Cursor to accelerate UI development, while I design and implement secure, scalable AWS backends underneath. 𝐈𝐍𝐕𝐄𝐒𝐓𝐎𝐑-𝐑𝐄𝐀𝐃𝐘 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 & 𝐂𝐎𝐌𝐏𝐋𝐈𝐀𝐍𝐂𝐄 Preparing for funding rounds or enterprise clients: ◆ Architecture audits to identify risks, bottlenecks, and cost inefficiencies ◆ Compliance-ready systems aligned with HIPAA, GDPR, SOC2, and PCI-DSS ◆ Clear technical documentation for investor and enterprise due diligence 𝐖𝐇𝐀𝐓 𝐈 𝐃𝐄𝐋𝐈𝐕𝐄𝐑 ◆ Cost-efficient backend systems optimized for real production workloads ◆ Scalable architectures designed for long-term product growth ◆ High-availability systems built for peak load reliability ◆ AI-integrated backend systems using OpenAI and AWS Bedrock 𝐑𝐄𝐂𝐄𝐍𝐓 𝐂𝐀𝐒𝐄 𝐒𝐓𝐔𝐃𝐘 A fintech platform was failing during traffic spikes, causing failed transactions and rising infrastructure costs. I re-architected their backend into a scalable event-driven system, optimized APIs, and removed database bottlenecks. Result: handled a 300% traffic surge with zero downtime and reduced AWS costs by 42% within one month. 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 𝐀𝐓 𝐀 𝐆𝐋𝐀𝐍𝐂𝐄 Languages: Java (Spring Boot), Node.js (NestJS), Python Cloud/Infra: AWS (Lambda, ECS/Fargate, DynamoDB, RDS, EventBridge, S3), Terraform, CDK etc... AI: OpenAI, AWS Bedrock, LangChain etc... Data: Redis, Kafka, Supabase etc... Tools: Lovable, Bolt.new, v0, Cursor base44, claude etc.. 𝐂𝐋𝐎𝐔𝐃𝐅𝐋𝐀𝐑𝐄 𝐄𝐃𝐆𝐄 & 𝐒𝐄𝐑𝐕𝐄𝐑𝐋𝐄𝐒𝐒 Cloudflare Workers (APIs), R2 (storage), D1/KV (data), Queues/Durable Objects (async), CDN/WAF etc... 𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐈𝐄𝐒 Fintech (PCI/GDPR), Healthcare (HIPAA), E-commerce, Logistics, Marketplaces 𝐑𝐄𝐀𝐃𝐘 𝐓𝐎 𝐓𝐀𝐊𝐄 𝐘𝐎𝐔𝐑 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 𝐒𝐄𝐑𝐈𝐎𝐔𝐒𝐋𝐘? If you're building a serious SaaS product, you don’t just need code, You need architecture that scales, performs, and stays cost-efficient under real production load. Send 2–3 time slots, and I’ll review your system and suggest an architecture approach.

Senior Full-Stack Architect/Engineer specialist in building scalable SaaS platforms using Node.js, React, Golang and cloud infrastructure and or microserces. I am a constantly updated programmer with 30 years of experience in software development and over 15 years as a software/solutions architect. I can develop/solve applications in 99% of areas or niches. How I can help you: • SaaS platform development • Microserces platform development • Scalable platform development • API development • API Integrations • Event Oriented Architecture • Scalable backend architecture • REST APIs and microservices • Cloud infrastructure and DevOps • System modernization and performance optimization • MVP development for startups • Enterprise-level system architecture • Figma → Software • Systems Web • Ecommerce • Landing Pages • Website • PWA • Mobile Aplication ( Android, IOS) • Server Configuration • Software Achitecture • Cloud Architecture • TDD • DDD • Clean Architecture Technologies Backend: Node.js, NestJS, TypeScript, Java, GoLang Frontend: React, Next.js, HTMX, Html, CSS Mern Stack, Infrastructure: Docker, Nginx, Certbot, PM2, Kubernetes, CI/CD, AWS - Amazon Web Services, Google Cloud, Microsoft Azure, Digital Ocean, Hetzner, Linux Automation: DevOps, Ansible , Terraform, Prometheus, Grafana , traefik Architecture: Microservices, Event-Driven Architecture, DDD, High Availability Systems, Distributed Systems I am a native Brazilian Portuguese speaker. I can handle technical communication in English, including reviewing and translating audio and video materials with the support of AI tools, so feel free to send them if helpful. I also understand Spanish very well. Portuguese is my preferred language for meetings. Experience I have worked on large-scale systems, including banking platforms, enterprise systems, streaming platforms, large e-commerce sites, and SaaS products used by thousands of users. I also have experience designing high-availability systems from scratch to deployment, building microservices architectures, and helping companies scale their infrastructure. Technical career leader. I already have led multiple teams on simultaneous projects. And in a large consulting and outsourcing company I led 3000 programmers in different teams for clients in the banking sector. If you are creating a startup, a SaaS platform, or an enterprise system, I can help you design the architecture and implement the solution. If you want to be sure your candidate is the right one and technically suitable for your project, I also conduct technical interviews to evaluate software engineers. I help companies quickly validate candidates and determine if they are the right fit for the role in a structured 30-minute technical conversation. I can tell you which of your candidates is the best for your project. I also help refine your project description. Let's talk about your project.