I provide a Node.js Backend Developer team that ships production-grade SaaS, APIs and platforms. 11,000+ hours worked, 50+ Node.js Backend Developer projects delivered, 100% Job Success Score, Top Rated Plus. As CEO I scope and own every Node.js Backend Developer engagement we sign. I study the brief, run discovery with founders, match the right engineers and stay accountable for delivery. My team owns the code - I never touch it. So when a brief lands for a Backend Engineer, an API Developer or a full stack software engineer, I scope it and the team builds it. Why hire my team: - 20+ years of Node.js Backend Developer, Full Stack Developer and SaaS Developer delivery - 200+ Node.js Backend Developer and SaaS Developer projects shipped - Long-term clients on retainers (3 - 10+ years) Our Node.js Backend Developer team designs services, REST and GraphQL APIs, queues and event pipelines that hold up under real production load. A NestJS Developer on the team treats Node as a serious production runtime and owns the heavy backend modules. Typical engagements: multi-tenant SaaS APIs, real-time platforms, billing flows, data pipelines, AI-backed services. Stack: Node.js, NestJS, ExpressJS, TypeScript, PostgreSQL, Redis, Elasticsearch, AWS, GCP, Docker, Kubernetes. Our Full Stack Developer team owns systems end-to-end - one team handling Node.js services, React frontends, data models and infra. A React Node pairing is our default shape - a React Node frontend on a NestJS Developer backend, with a nextjs developer on SEO-critical pages. We replace fragmented setups where a website developer, web developer and front end specialist were stitched together. Adjacent angles I present daily: full stack developer saas for B2B platforms, python full stack developer pairings for data and AI, full stack developer ai integrations, full stack developer react teams for SaaS dashboards, full stack developer shopify extensions, full stack web developer rebuilds of legacy SPAs, full stack ai saas developer engagements where LLM features must ship at production standard. Our SaaS Developer team helps founders ship multi-tenant SaaS and B2B platforms. A SaaS Developer engagement covers auth and RBAC, Stripe billing, observability, anti-abuse and event tracking the saas marketing team can use. The team has shipped a webflow developer saas pairing, a b2b saas booking system developer engagement, a ui ux designer saas pipeline, a saas explainer video flow in onboarding and a saas sales console wired into the backend. On the API side a dedicated API Developer track owns contracts and versioning. A REST API Developer designs the REST API Developer surface - resources, pagination, idempotency, webhooks - and the API Developer keeps SDKs and docs honest. A Backend Engineer owns the data layer; a second Backend Engineer covers queues and workers so the API never blocks on jobs. Cross-language coverage. A python developer track owns scraping, ETL and AI workflows. python nodejs migrations land here when teams consolidate dual stacks. flutter node.js and vue.js node.js setups join the core when mobile or admin SPAs need a reactive layer. A react developer pairing handles SaaS dashboards on the API. A wordpress developer or shopify developer hand-off covers CMS migrations. A mobile app developer pairing extends the SaaS into iOS and Android. Clients hire me when they need: - a Node.js Backend Developer team that owns architecture, APIs and scaling - a back end developer node.js bench for high-traffic SaaS - a Full Stack Developer team replacing 3 - 5 contractors with one coherent system - a SaaS Developer team fluent in multi-tenancy, auth, billing and RBAC - an API Developer and Backend Engineer pair for a clean, versioned REST API Developer surface - a full stack software developer practice with CEO-level discipline on roadmaps - a website developer hand-off backed by the team Recent work my team shipped: - Cybersecurity SaaS. Node.js, NestJS, PostgreSQL, Redis on GCP + Kubernetes. 170M+ req/week, 500 RPS peaks, 1M+ MAU. - Device Verification SaaS. Single backend powering web, Telegram bot and Developer API. 4K+ DAU, 1M+ checks, 80%+ via API. - Clinic Enterprise platform. React, Next.js, Laravel, Node.js, Redis, AWS. REST API, queues, RBAC, 1C and lab integrations. MVP in 4 months for 500 patients/day, 500K records. - E-commerce Data Pipeline SaaS. 50M+ products, per-partner parsers, dedup. Cloud cost cut ~9x at sub-second search across 300 - 500K DAU. - Multi-currency Voting SaaS. Wallets, Stripe top-ups, real-time vote locking over WebSockets. 2M+ users in 10 countries, $2.5M+ revenue. Reliable SaaS comes from deliberate design - that's what my Node.js Backend Developer, Full Stack Developer and SaaS Developer team focuses on. Need a Node.js Backend Developer team, a Full Stack Developer team or a SaaS Developer partner that delivers on time and stays long-term - let's talk.

Main Skills: #1 Voice over Internet Protocol - VoIP 📞 #2 Artificial Intelligence (AI) & Machine Learning (ML) 🤖 #3 Internet of Things - IoT 📡 #4 Mobile App, Web App & Software Development Services. 📱💻 ------ VoIP Services: We have rich and proven experience in the VoIP Industry. We can help you with the following services related to this industry. - VoIP-to-VoIP calls, VoIP-to-PSTN calls, WebRTC. - PBX systems: analog, digital, and cloud-hosted. - Using SIP: voice calls, video conferencing, instant messaging, and media distribution. - Platforms: FreeSWITCH, Asterisk, SIP Foundry, Elastix, OpenPBX, FreePBX, 3CX, etc. - Integrations: Twilio, Telnyx, Agora, Jitsi, etc. - AI-powered Voice Assistants: Intelligent virtual assistants for customer service, call routing, and more. ------ AI/ML Development: - Machine Learning: Predictive modeling, classification, regression, clustering. - Deep Learning: Computer Vision, Natural Language Processing (NLP), Neural Networks. - AI-Powered Chatbots: Conversational AI for customer service, sales, and support. - AI-Powered Voice Agents: Intelligent virtual assistants for various applications. - AI in IoT: Predictive maintenance, anomaly detection, and real-time data analysis. ------ IoT: We provide innovative end-to-end solutions in IoT - Firmware Development - IoT based Software, Mobile, and Web Development - Connectivity protocols: Wi-Fi, 2G/3G/4G/5G, Thread, Zigbee®, Z-Wave, LoRaWAN, BLE, Ethernet etc - IoT standards: OpenIoT, HomeKit, Nest, AllJoyn, Brillo, and Weave - AI/ML in IoT: Predictive maintenance, anomaly detection, and real-time data analysis. ------ About Moon Technolabs: - 350+ Developers - 1500+ Projects - Well-layered internal Organization Structure - Well-layered project Development Structure - Since 2009 - Happy Working Environment for our employees

💎 Top 1% Expert-Vetted 🏆 Top Rated Plus ✅ 250+ projects delivered across fintech, SaaS, e-commerce, and enterprise products. 20 years of UX/UI design experience, including a decade as creative director at global agencies like Iris Worldwide London, HAVAS Paris, and Young and Rubicam New York. I design products that are not just visually sharp but strategically built to convert, retain, and scale. Ready to discuss your project? 𝘀𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 or schedule a quick call directly from my profile. I respond immediately. Below are my services: ✅ 𝗪𝗛𝗔𝗧 𝗜 𝗗𝗢 I cover the full UX/UI design lifecycle, from initial research and wireframing through to high-fidelity Figma prototypes and production-ready design systems. My web design work spans SaaS platforms, fintech dashboards, e-commerce, and mobile applications. Whether a client needs a complete product design overhaul or a focused UX audit, I bring the same structured, research-backed approach every time. Core UX/UI design services: product design strategy and UX architecture, complex wireframing and information hierarchy, rapid prototyping and interactive Figma components, design systems and UI libraries, user research and usability testing, heuristic analysis and CRO-focused UX audits, and creative direction including brand identity and visual language. Tools: Figma, Webflow, Sketch, Adobe XD, Illustrator, Photoshop, InVision, Axure, Hotjar, Mixpanel, Fullstory, Google Analytics, and UserTesting, Generative AI, Chat GPT, Nano banana, Claude, Gemini. ✅ 𝗞𝗘𝗬 𝗔𝗖𝗛𝗜𝗘𝗩𝗘𝗠𝗘𝗡𝗧𝗦 - 250+ UX/UI design projects completed with a consistent 5-star track record across the US, Europe, and Asia. - Recent highlights: a fintech core banking platform for Omniwire, simplifying complex issuer workflows into an intuitive product design across multiple markets. - A personal finance web application for MoolaX where the UX design reduced onboarding drop-off by restructuring information hierarchy and simplifying the dashboard UI. - A full product design and web design build for Austrian Audio, turning a high-end audio brand into a conversion-optimized e-commerce experience across desktop and mobile. ✅ 𝗪𝗛𝗔𝗧 𝗦𝗘𝗧𝗦 𝗠𝗬 𝗨𝗫/𝗨𝗜 𝗔𝗣𝗔𝗥𝗧 Most UX/UI designers are strong on research or strong on visuals. After 20 years across product design and creative direction, I bring both. Agency work trained me to design for persuasion and brand impact. Product design across 250+ projects taught me to design for clarity, retention, and real user behavior. The result is UX/UI work that looks considered, converts visitors, and gets built the way it was designed. ✅ 𝗖𝗢𝗥𝗘 𝗙𝗢𝗖𝗨𝗦 The clients I work best with are product teams and founders who need a UX/UI designer operating at both strategic and execution levels. I am equally comfortable running a UX audit, building a design system from scratch in Figma, or owning the full web design process from brief to handoff. My creative direction background means I think about brand, narrative, and conversion alongside usability. Industries: fintech and banking, SaaS and B2B platforms, e-commerce, healthcare, media, and enterprise software. ✅ 𝗠𝗬 𝗔𝗣𝗣𝗥𝗢𝗔𝗖𝗛 Every UX/UI design engagement starts with understanding the problem before opening Figma. I run a discovery phase covering user goals, business constraints, existing UX patterns, and competitive positioning. Wireframing and UX architecture come before any visual UI design decisions. This prevents the most expensive mistake in web design: building beautiful interfaces on top of broken user flows. I work in tight feedback cycles and deliver annotated Figma files with developer handoff specs, component documentation, and interaction notes so nothing gets lost between design and engineering. ✅ 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘 𝗕𝗬 𝗔𝗥𝗘𝗔 SaaS and Fintech Product Design: Core product experiences for fintech platforms, banking dashboards, and data-heavy SaaS products where UX/UI design must make complex information readable and actionable. Every engagement starts with UX research and flow mapping in Figma before UI design begins. Web Design and E-commerce: Brand-led marketing sites, conversion-optimized landing pages, and full e-commerce UI including product pages, checkout flows, and mobile web. CRO principles and A/B testing applied wherever performance data is available. Mobile App and Responsive UX/UI: Mobile-first UX/UI for iOS and Android with gesture-based interaction design, scalable component systems, and design consistency from mobile to desktop. Creative Direction and Brand: Brand identity, visual language, logo design, and strategic positioning work that connects product design to business narrative. 🚀 SKILLS - Web Design - Figma - User Interface Design - UX & UI - User Experience Design - Mobile App Design - Generative AI (Chat GPT, Clause, Genini..) 💡 Want a free UX/UI audit before we discuss scope? Send me a message, I reply immediately.

👋 Hi, I’m Kailash - A Senior Full-Stack Developer - A PHP/Symfony/Pimcore & GenAI Certified I’m a senior full-stack developer with 12+ years of experience helping companies with end-to-end complex design, build, and stabilize production-grade web applications and SaaS platforms. I work best on complex, long-term projects where clean architecture, scalability, and reliability matter more than quick hacks. ⭐What clients usually hire me for: ************************************** ✅ Building or modernizing PHP / Laravel / Symfony–based systems ✅ Designing clean backend architectures using SOLID & DDD principles ✅ Developing full-stack web applications (backend-heavy) ✅ Upgrade/Migrate or maintain a complex web application ✅ Refactoring legacy systems into maintainable, scalable code ✅ Supporting SaaS products, internal platforms, and business-critical apps ⭐ Core Technical Strengths: ********************************* ✅ OOPs Concepts, SOLID Principles, and Domain-driven design structure. ✅ Web/app development with Back-end and Front-end development ✅ UI/UX for website Design, application design, and development ✅ HTML (5), CSS (3), Ajax, Bootstrap, jQuery, JSON, TailwindCSS ✅ MySQL, SQL, NoSQL, MongoDB, PostgreSQL, MVC, JavaScript, Typescript, Restful API, GraphQL ✅ PHP, Symfony, Laravel, Vue.js, Yii, WordPress, Angular, React, Node.js, Python. ✅ Zend, Pimcore, Spryker, Shopware, API-Platform, DoctrineORM, OpenCart, WooCommerce, Gulp, Tomcat, Solr, Twig, SonataAdmin, Elastic Search, Redux, Redis, RabbitMQ, WebRTC, Livewire, Blade, LAMP stack, PHPUnit, Behat. ✅ AI tools: Cursor, Claude, OpenAI, Replit AI, GitHub Copilot. ✅ Quality analysis with manual and automation. ✅ DevOps/ Server skills: Docker, Kubernetes, AWS/ EC2, and other 3rd party services, Azure, Windows, Linux, Apache2, Nginx, CI/CD ✅ Update methodology: Agile or a Scrum method ✅ Project management Tools: Jira, Stack, and ClickUp. Asana ✅ Hands-on experience with Git and Bitbucket. ⭐ Why Clients Work With Me ********************************* 🏅 12+ years of experience as a full-stack developer 🏅 100% Client Recommendation 🏅 90% of Repeated clients 🏅 8+ years of experience transforming ideas into reality ⭐Industry Experience: ************************** ✔️E-Commerce ✔️Electricity/Gas ✔️Financial Services/FinTech ✔️HealthCare/Pharma ✔️Real Estate ✔️Trasportation & Logistics✔️Law Firms ✔️Event/News ✔️Restaurants/FoodTech ✔️Social Media ✔️Eductaion/E-Learning/LMS ✔️Technology Recruitment ✔️Airport/Aviation/Automotive ✔️Gym/Fitness ✔️Security & Fire Sefty I don’t overpromise; I focus on building systems that last. 🎯 If you’re looking for a senior developer who can take ownership, think critically, and deliver clean, scalable code, let’s talk. — Kailash Sharma

Scaling SaaS and cloud-native businesses with secure, automated, and cost-efficient infrastructure — now powered by AI/ML capabilities. I help companies: ◉ Reduce cloud costs by up to 30–40% ◉ Deploy and scale LLM & AI/ML workloads on production-grade infrastructure ◉ Build scalable Kubernetes clusters (EKS, AKS, GKE) optimized for ML pipelines ◉ Achieve compliance (SOC 2, HIPAA, PCI DSS, ISO 27001) ◉ Migrate to cloud with near-zero downtime If your infrastructure feels fragile, your AI models are slow to deploy, or your cloud bill keeps growing — we fix that. ⚙️ Core Expertise ➙ Cloud Platforms: AWS, GCP, Azure, Digital Ocean, Oracle ➙ Containers: Docker, Kubernetes, Helm ➙ AI/ML & MLOps: LLM Deployment, Fine-tuning, MLflow, Kubeflow, SageMaker, Vertex AI ➙ nfrastructure as Code: Terraform, Ansible, CloudFormation, Pulumi ➙ CI/CD: GitHub Actions, GitLab CI/CD, Jenkins, ArgoCD ➙ Monitoring: Prometheus, Grafana, Datadog, ELK ➙ Security: DevSecOps, Trivy, SonarQube, Checkov ➙ Automation: Python, Bash, PowerShell 🛡️ Compliance & Security We design infrastructure aligned with: HIPAA | SOC 2 | PCI DSS | ISO 27001 | ISO 27002 Security is integrated — not added later. 💼 Who We Typically Work With ◉ SaaS startups scaling rapidly ◉ AI/ML teams needing production-ready model deployment infrastructure ◉ Enterprises migrating to cloud or adopting LLM-powered products ◉ Teams needing Kubernetes production hardening ◉ Regulated industries requiring compliant cloud setups 🌟 Why Clients Choose Us ✅ Certified Kubernetes, Cloud & MLOps experts ✅ Real-world LLM deployment & fine-tuning experience ✅ Clean, maintainable infrastructure (no messy DevOps) ✅ Transparent communication & fast response times If you're deploying AI models, scaling Kubernetes, or optimizing cloud costs — let's talk.

I build complete AI-powered mobile and SaaS products designed, developed, and shipped end to end. 7+ years of experience building AI and SaaS Platforms, Full-Stack development, AI Multi-Agents, RAG knowledge assistants/Chatbots and intelligent automation, 30+ delivered projects, and apps shipped to millions of users from AI mobile apps on the App Store & Play Store to full AI SaaS platforms. I work with founders and product teams worldwide to take AI products from concept to production. 𝐌𝐲 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ➛ AI-Powered Mobile Apps (Flutter & React Native, iOS & Android) ➛ AI-Powered SaaS Platforms & Web Apps (full-stack, cloud-deployed) ➛ LLM & RAG Systems: LangChain, Pinecone, OpenAI, Claude, Llama ➛ Chatbots & AI Assistants (in-app, customer support, business automation) ➛ Voice AI & Calling Agents (Twilio, Vapi, Deepgram, Real-time Conversations) ➛ Multi-Agent Systems & Workflow Automation (n8n, Make, Zapier) ➛ End-to-End Deployment (AWS, Azure, Google Cloud, Docker, CI/CD) ➛ MVPs & Prototypes – From idea → shipped product quickly 𝐀𝐈 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐔𝐬𝐞 𝐂𝐚𝐬𝐞𝐬 🔑 AI-powered mobile apps with chat, voice, and real-time features 🔑 AI SaaS platforms – from MVP to production release 🔑 AI chatbots and assistants for support, sales, and onboarding 🔑 RAG-based knowledge assistants over documents and internal systems 🔑 Voice AI for call handling, summaries, and insights 🔑 Task-focused AI agents with controlled tool access (MCP-based) 🔑 Workflow automation across SaaS tools and custom platforms 🔑 Data pipelines, syncing, reporting, and operational analytics 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 🔹 Cross-platform Flutter and React Native apps with AI chat, voice interfaces, and real-time features 🔹 BLE/IoT, biometric auth, real-time data, and payments integration 🔹 Cross-platform builds from MVP to App Store / Play Store production release 𝐒𝐚𝐚𝐒 & 𝐂𝐮𝐬𝐭𝐨𝐦 𝐖𝐞𝐛 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 🔹 Custom web applications using React, Next.js, TypeScript, Redux, Tailwind CSS 🔹 Secure REST, GraphQL, and Fast APIs with Node.js, NestJS, Python (FastAPI, Flask, Django), WebSockets 🔹 Scalable databases: PostgreSQL, MongoDB, MySQL, DynamoDB, Firebase, Supabase, Redis 🔹 API & platform integrations: Stripe, PayPal, Plaid, Google Maps & GPS, email and social platforms 𝐂𝐡𝐚𝐭𝐛𝐨𝐭𝐬 & 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬 🔹 OpenAI, Claude, and Gemini LLM Integration 🔹 Multi-agent orchestration with LangChain, LangGraph, and custom frameworks 🔹 MCP (Model Context Protocol) server for AI-powered applications 🔹 Vector databases for semantic search and long-term memory (Pinecone, ChromaDB, Elasticsearch) 🔹 Retrieval-Augmented Generation (RAG) over existing databases, PDFs, and internal documents 🔹 Voice & calling agents using Retell, Twilio, and Vapi 🔹 Speech-to-text and text-to-speech pipelines (Whisper, Deepgram, Google Speech APIs) 𝐖𝐨𝐫𝐤𝐟𝐥𝐨𝐰 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧𝐬 🔹 CRM, lead management, and workflow automation with n8n, Make, Zapier, HubSpot 🔹 AI-powered automations for onboarding, follow-ups, scheduling, reporting, and notifications 🔹 End-to-end data pipelines for analytics, alerts, and operational intelligence 🔹 API-level integrations connecting AI agents, databases, SaaS tools, and cloud services 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 🔹 CI/CD pipelines with GitHub Actions, GitLab CI, and automated testing 🔹 Containerized deployments using Docker and Kubernetes orchestration 🔹 Monitoring, logging, and observability with Sentry, Datadog, CloudWatch 🔹 Scalable cloud architecture on AWS (Lambda, EC2, RDS), GCP, and Azure If you're building an AI mobile app or SaaS product and want it done once, properly, send me a short description of what you're building and I'll tell you honestly what it'll take.

# You need an honest and dedicated person passionate about technology # You see value of me running a 40x man software house built organically Software engineers from Poland are consistently ranked among the world's best, frequently placing in the TOP 3 globally on platforms. If you're still reading here, it means we might be a fit. I handle full products or build a dedicated team to works for you. I have clients working with for 12+ years now, but also do on-time proof of concept jobs. I like what I do as I enjoy bringing tech value and meeting people. I'm now a serial founder, advisor and a VC investor in Sweden and Singapore funds. But don't just take my word for it: 💬 “Not only was I impressed with the timely delivery of quality products, but I was also impressed by his integrity. I recommend Kacper 100% and would be happy to speak to anyone to provide more details!” – Brad M.
 💬 “Kacper, your company was able to deliver a working product where others have failed.” – Jamie J. 💬 “These guys have turned me around. They were flexible, responsive, fast, gave great feedback and got the job done. They have become my "go to" dev team.” – Tony C.
 💬 “Milo team has been fantastic and as dedicated as our employees in delivering high quality code and software.” – Mojgan H.
 💬 “Milo has delivered all the benefits of outsourcing with none of the problems.” - Mark M. 
 Here's a boring list of what my team and I can do for you. Hopefully Upwork will position my account higher because of this nice list below: ✅ Pre-Implementation Analysis (PIA): Before writing a single line of code, we create a clear roadmap through collaborative workshops to: • Define your business goals and user workflows • Reduce development risks by addressing challenges upfront • Speed up delivery with well-defined technical plans • Stay on budget by avoiding costly surprises What you get: • Business analysis - Goals, workflows, feature alignment • Technical architecture - Tech stack, UI/UX prototypes, scalability strategies • Development roadmap - POC to full product launch milestones • Workshop insights - Actionable next steps ✅ UI/UX Design & Product Design - User-Friendly Interfaces: Our design process creates beautiful, intuitive experiences: • UX research to understand user needs • Rapid prototyping and wireframes • High-fidelity mockups and design systems • Usability testing for seamless experiences 🛠️ Design tools: Figma, Adobe XD, Sketch, InVision, Balsamiq, Axure, Proto, Framer ✅ Full-Stack Development: • Architecture: Client-Server, Layered, Event-Driven, Peer-to-Peer (P2P), Plug-ins, Microservices, MVC ✅ Frontend & Backend Technologies: • Frameworks: Django, React, Angular, Node , Vue, Ember, Semantic-UI, Backbone, jQuery, Qt, Flutter, React Native • Languages: JavaScript, Python, C++, Qt, C, HTML, CSS, Rust, Perl, Go, TypeScript, SQL, Objective-C, Swift, Assembly, R • Databases: PostgreSQL, Redis, Elasticsearch, MySQL, SQLite, Oracle, MongoDB, SQL Server • DevOps: Git, Jenkins, Docker, Kubernetes, AWS, Ansible, Microsoft Azure, Vagrant, CI/CD pipelines, Sentry, Google Cloud, Selenium ✅ Mobile & Web Applications: • Cross-platform mobile apps (iOS, Android) • Progressive web applications (PWA) • Enterprise web solutions • API development and integrations ✅ Testing & QA: Comprehensive testing strategies: • Test-Driven Development - Catch issues early • Manual testing - Real-world scenario validation • Automated testing - Performance and accuracy • Cross-platform testing - Web, mobile, desktop, embedded systems ⚙️ QA Platforms: • Web: Chrome, Safari, Edge, Opera, Firefox, Brave • Mobile: Android, iOS, ChromeOS, Tizen • Desktop: Windows, macOS, Linux, ChromeOS • Embedded: Raspberry Pi, Arduino, SparkFun, Beagleboard, BeagleBone Black, NVIDIA, Rock Pi, SimpleLink, UDOO, QNX, VxWorks, Seeed, Intel Nuc, Embedded Linux, Odroid-C2, Banana Pi, Qualcomm Snapdragon • Protocols: I2C, SPI, USART, USB, DMA, I2S, ADC, DAC, CAN, Ethernet 🛠️QA Tools: TestRail, Selenium, Appium, Cypress , Postman, JMeter, Robot Framework, BrowserStack, Cucumber, Katalon, Squish, Zephyr, Bugzilla, Testim, SoapUI 💼 Industries we serve: • FinTech & Blockchain solutions • Healthcare & Biotech applications • E-commerce & Marketplaces • Education & EdTech platforms • Business Operations software • Embedded Systems & IoT • Travel & Hospitality apps 👨🏻‍🏫 Advisory & Fractional CTO Services: With 15+ years building software across 4 continents I can consult on: • Product strategy and technical roadmapping • Technology selection and architecture decisions • Team scaling and development processes • Investor-ready technical due diligence Ready to take your idea from concept to reality? Let’s talk. 📞

👋 Hi! I’m a 🏆 ⭐️⭐️⭐️⭐️⭐️Top Rated Senior Full Stack Developer / Front End Developer and Head of Engineering at GroupBWT - a 100+ member software company with over 15 years of experience building SaaS platforms, automation systems, data-driven tools, and large-scale enterprise applications. As a Full Stack Developer and Front End Developer, I design and deliver complete end-to-end systems with a focus on long-term scalability and maintainable architecture. My role as a Full Stack Developer includes system design, backend logic, and infrastructure decisions, while as a Front End Developer I ensure fast, responsive, and conversion-focused interfaces that perform well under real production load. What we deliver for our clients: ✅ SaaS products supporting 30,000+ active users with real-time collaboration features ✅ Platforms processing over 70,000 API requests per day ✅ Automation systems that reduce manual workflows by 50–65% ✅ Scalable architectures designed to handle 5–8× traffic growth without redesign 🔁 What I Do 📦 End-to-End Application Development (Full Stack Developer / Front End Developer) As a Full Stack Developer, I build complete systems from scratch, including architecture decisions and deployment strategies. As a Front End Developer, I focus on UI structure, performance, and usability in real production environments. 🔹 SaaS platforms 🔹 Admin dashboards & internal toolsefficiency 🔹 Real-time systems 🔹 Multi-tenant architectures 🔹 Subscription & billing systems Across all projects, I work as a Full Stack Developer responsible for system consistency from frontend to backend. 🎨 Frontend Engineering (Front End Developer focus) As a Front End Developer, I build interfaces that remain stable under heavy usage and complex state changes, while aligning closely with backend systems built by Full Stack Developers. 🔹 React / Next.js applications with reusable architecture 🔹 State management systems 🔹 Tailwind & UI systems 🔹 Performance optimization 🔹 Real-time UI updates connected to Full Stack Developer event systems The goal of every Front End Developer implementation is predictable performance and clean UI behavior. ⚙️ Backend Engineering (Full Stack Developer focus) As a Full Stack Developer, I design backend systems with reliability, scalability, and observability in mind, ensuring smooth interaction with Front End Developer interfaces. 🔹 REST & GraphQL APIs 🔹 Microservices architectureindependently 🔹 Async workers 🔹 WebSockets and real-time systems 🔹 External API integrations Each Full Stack Developer decision is made with long-term system evolution in mind. 🧩 Recent Experience (Full Stack Developer / Front End Developer) ✅ Multi-Tenant SaaS Platform (React + Node js + Python) Lead Full Stack Developer for a platform serving 50K+ monthly users and 30+ organizations.
 ✔ 100K+ daily API calls • 25M+ records • Billing for $500K+/year ✅ Enterprise CRM (React + Node js) Primary Full Stack Developer for a CRM used in 12 countries.
 ✔ Automated workflows cut manual work by 70%
 ✔ 200K+ processed events/day • 8 API integrations ✅ Scheduling Platform (React + Node js + Python) As a Full Stack Developer, designed booking logic for 20K+ bookings/month.
 ✔ Real-time availability (<80ms)
 ✔ Payment flows processing $1M+ annually ✅ Data Platform (Python + React) End-to-end ownership as a Full Stack Developer, delivered pipelines processing 3M+ records/day.
 ✔ 85% faster data prep • <1s dashboard latency ✅ Workflow Automation Engine (React + Node.js) Built as a Full Stack Developer full automation replacing spreadsheets and manual operations.
 ✔ 40K+ tasks/day • 92% fewer errors • 70% less manual work 🤝 Why Clients Choose Me as a Full Stack Developer and Front End Developer ✔ True Full Stack Expertise With 16+ years as a Full Stack Developer, I deliver complete systems, not fragments. ✔ Mastery of React, Node js, and Python All three technologies are used deeply and consistently across my projects as a Full Stack Developer. ✔ GroupBWT Strength 🔹 Since 2009
 🔹 100+ engineers
 🔹 Dedicated Full Stack Developer division
 🔹 Proven reliability and fast communication ✔ Business Impact Clients report:
 ➡ 50% faster delivery
 ➡ 60% lower manual overhead
 ➡ 10× fewer bugs after release
 All thanks to proper Full Stack Developer engineering principles. 💻 Tech Stack (Full Stack Developer / Front End Developer) Languages: JavaScript, TypeScript, Python, PHP Frontend: React, Next.js, Vue, Angular, Tailwind, Material UI Backend: Node.js, NestJS, FastAPI, Flask, GraphQL, REST Databases: PostgreSQL, MongoDB, MySQL, Redis Cloud & DevOps: AWS, GCP, Azure, Docker, Kubernetes, CI/CD Architectures: SaaS, microservices, event-driven systems 🚀 If you need a scalable web platform - let’s connect. ➡️ Invite me to your job, and I’ll help design and build a reliable production system.

I provide a long-running PHP Laravel developer team that ships SaaS, CRM, marketplaces and admin tools. 7,000+ hours worked, 200+ PHP Laravel developer projects delivered, 100% Job Success Score, Top Rated Plus. As COO I scope, plan and oversee every PHP Laravel developer engagement we sign. I qualify the brief, run discovery, match the right engineers and own commercial relationships. My team owns the code. Why hire my team: - 20+ years of PHP Laravel developer delivery - 200+ PHP Laravel developer, Full Stack Laravel, Laravel Vue and PHP React projects shipped - Long-term retainers (3 - 10+ years) The PHP Laravel developer team I run is a full PHP Developer and Backend Developer bench. Every PHP Developer on it works in Laravel, MySQL and Redis with RBAC, audit trails, Stripe billing, queues and WebSocket real-time, so when a client needs a PHP Developer or a Backend Developer who owns the data model and the API, that is the seat I staff. The Backend Developer side covers schema design, REST and GraphQL APIs, background jobs and Nylas, Mailgun and Stripe integrations. On the frontend my Vue.js Developer and React Developer engineers pair with that backend. A Vue.js Developer takes admin panels, dashboards and multi-tenant SPAs on Inertia.js, Vue 3 and Pinia; a React Developer takes SaaS dashboards, marketplaces and content platforms on React + Next.js. Laravel Vue is what we reach for when a project needs a clean PHP backend with a reactive SPA. PHP React is the go-to when Laravel pairs with React + Next.js, with react node services and a javascript developer mindset across both sides. Our Full Stack Laravel team owns systems end-to-end - a Laravel + PHP backend paired with a Vue or React frontend, MySQL, APIs and AWS. Clients hire a Full Stack Laravel team instead of splitting backend and frontend specialists. Adjacent Full Stack Laravel: full stack web developer rebuilds, full stack php delivery, python full stack developer pairings for data and AI, full stack developer ai and full stack developer react funnels. A lot of the work is line-of-business systems, so I also staff a dedicated CRM Developer and ERP Developer. A CRM Developer rebuilds messy spreadsheet-and-email workflows into a single Laravel CRM with pipelines, roles and reporting; an ERP Developer wires registration, billing, inventory, lab and back-office modules into one platform with shared RBAC and audit. We have shipped a clinic ERP with cashier, doctor and lab desks and a CRM rebuild that ripped out a legacy Gutenberg setup. The CRM Developer and ERP Developer seats sit on the same Laravel core. Above the role labels, every engineer is a Software Developer first. That Software Developer discipline - clean architecture, code review, predictable deploys, tests - keeps a multi-month build stable and is what a client really buys when they hire a Software Developer through me. Migrations the team handles often: ruby on rails moved onto Laravel + React or Laravel Vue, an android developer hand-off when a backend feeds a mobile app, a flutter laravel companion when mobile is on the roadmap, a wordpress developer track for storefront and CMS migrations, and php laravel react rebuilds for clients outgrowing a Gutenberg setup. Clients hire me when they need: - a PHP Developer or Backend Developer who owns the data model, API and infra - a Vue.js Developer or React Developer to pair with a Laravel backend - a CRM Developer for pipelines, roles and reporting on Laravel - an ERP Developer for registration, billing, inventory and back-office modules - a Software Developer team for SaaS, marketplace or CRM products - a Full Stack Laravel team that owns frontend, infra and deploys - a wordpress developer hand-off and a long-term web developer and website design partner Recent work my team shipped: - Identity-verification SaaS. Backend Developer + Full Stack Laravel. Laravel + Node.js real-time, MySQL + Redis. 4K+ DAU, 1M+ checks via Developer API. - Multi-currency Voting SaaS. Full Stack Laravel / PHP React. Laravel + MySQL, real-time vote locking, Stripe payouts. 2M+ users in 10 countries, $2.5M+ revenue. - Clinic ERP. ERP Developer / Backend Developer. React + Next.js, Laravel, Node.js, Redis, AWS. Registration, cashier, doctor, lab desks, 500 patients/day. - Education B2B platform. Vue.js Developer + React Developer. Laravel 8, Vue.js admin, React portals, CKEditor, Stripe. Hierarchical content editor, student seats. - CRM rebuild on Laravel. CRM Developer / PHP Developer. Legacy WordPress + Gutenberg ripped out, photoshop assets, photographer briefs and product photography pipelines re-routed into a custom Laravel CMS with Nylas and Stripe. The COO hat keeps multi-month delivery predictable. Need a PHP Developer, Backend Developer, Vue.js Developer, React Developer, CRM Developer, ERP Developer or Software Developer team that ships on time and stays long-term - let's talk.

Hi! I'm Waleed Saifi, a MERN stack developer with 6+ years building SaaS products with real product logic: billing, roles, dashboards, CRMs, messaging, APIs, reports, and workflows. I build and fix React, Next.js, Node.js, Express.js, MongoDB, and TypeScript apps that need to hold up under real production traffic. Most developers can build screens. The harder part is the system behind those screens: the data model, user permissions, payment flow, admin logic, API structure, third-party integrations, deployment setup, and the edge cases that only show up once real users start using the product. That's usually where I come in. I work best on SaaS platforms, internal tools, dashboards, CRMs, marketplaces, booking systems, real-time apps, and web/mobile products where the app is more than a basic frontend. Problems I regularly handle: - Turning a rough SaaS idea into a working MVP: frontend, backend, database, auth, payments, and deployment - Cleaning up React or Next.js apps that got hard to maintain - Fixing slow dashboards, broken APIs, unstable MongoDB queries, Stripe issues, auth bugs, and deployment failures - Building admin panels, user roles, subscription flows, notifications, messaging, reporting, and workflow automation - Integrating Stripe, Stripe Connect, Twilio, Google Maps, Firebase, OAuth, JWT, webhooks, and custom APIs - Adding AI-assisted features where they actually improve the product, not just because "AI" sounds good Recent product work: ▪️ WAWCD .com – SaaS CRM platform. Built with React, Next.js, Node.js, and MongoDB for 20K+ active users. Worked on CRM functionality, Stripe payments, Twilio messaging, and AI-assisted workflow automation. ▪️ Tournated .com – sports management platform. Built as a web platform and extended toward mobile, using Next.js, Node.js, MongoDB, and mobile-first product flows. ▪️ Prospeo .com – real estate SaaS platform. Built with React and Node.js for lead generation, data management, and AI-assisted property insights. Before writing code, I look at the product goal, user roles, database structure, API flow, payment logic, integrations, and deployment plan. Bad architecture early usually turns into expensive cleanup later, so I'd rather build it right from day one. I'm not the best fit for simple brochure sites or one-page landing pages. I'm a strong fit if you need a MERN stack developer who can take ownership of a real product, make technical calls, and ship features that hold up past the demo stage. Send me the app details, current stack, and what needs to be built or fixed. I'll come back with a practical technical plan.