✅ High-Quality Work ✅ Cost-Efficient Services ✅ Fluent English Verified ✅ FAST Deliver of Work ✅ Long term working relationship I am a full-stack web developer with a track record of delivering large-scale high-performance products and have professional experience in various technologies of frontend and backend development. Listed below are my experience and skills: ✅ Frontend: ReactJS/Redux, Bootstrap, JavaScript, TypeScript, jQuery, Ajax, HTML5, Material UI, TailwaindCSS. ✅ Backend: NodeJS, ExpressJS, NestJS ,RESTful API, GraphQL ✅ Database: MongoDB, PostgreSQL, MySQL. Thanks a lot for visiting my profile, You are invited to watch my portfolios. Please see this at a glance. Enjoy your moments have a good time. 🙂

Hi, I’m a full-stack developer specializing in AI integrations and automation across web and mobile. I build fast, accessible, and scalable applications, from SaaS platforms and e-commerce systems to AI-powered tools and internal tools. I help teams turn ideas into production-ready products while keeping performance, reliability, and user experience front and centre. ⚡ How I Can Supercharge Your Project: 🤖 AI Integration & Automation: • Integrating AI into real products, including chatbots, content generation, intelligent search, and AI-powered workflows. • Designing and implementing automated workflows using tools like n8n, Make, and Gumloop to eliminate manual work and scale operations. • Building recommendation systems, analytics pipelines, and predictive features that turn data into actionable insights. 🎨 Frontend Mastery: • Building fast and accessible UIs using React, Next.js, Vue.js, React Native and modern CSS systems. • Translating designs into polished, pixel-perfect interfaces. • Optimizing SEO and rendering strategies to improve load times, search visibility, and conversions. 🛠️ Backend Mastery: • Building robust REST APIs using modern frameworks like Nest.js and Elysia. • Modeling and managing relational and NoSQL databases, optimizing queries. • Implementing secure auth flows, role-based access control, and best practices for data protection. • Integrating payment systems, AI APIs, analytics, messaging, and telemetry to monitor performance, usage, and system health. 🚀 General Full-Stack Development Expertise: • Taking projects from idea and planning through development, deployment, and post-launch support. • Writing readable code with a focus on maintainability and scalability. • Handling CI/CD, cloud deployments, and error tracking with tools like AWS, Jenkins, and PostHog. • Working closely with clients and communicating clearly through all development phases. 🧰 Core Technologies: • Automation & AI: n8n, Make (Integromat), Apify, Gumloop, OpenAI API, Claude API, workflow orchestration. • Cloud & DevOps: AWS (EC2, S3, RDS, Lambda), Google Cloud Platform (GCP), Microsoft Azure, Docker, Kubernetes, CI/CD pipelines. • Frontend: React, React Native, Redux, Vue.js, Next.js, Gatsby, Tailwind CSS, Ant Design. • Backend & CMS platforms: Node.js, Nest.js, ElysiaJS, Express.js, Deno, Payload CMS, Strapi. • Databases: MongoDB, PostgreSQL, MySQL, Cloud Firestore, Amazon S3. • Messaging & Integration: RabbitMQ, Kafka, WebSockets, GraphQL, Sentry. • Source Control: Git, GitHub, GitLab. Let's connect and explore how I can bring your idea into reality! 💫

🚀 Need a reliable fullstack developer who can take your web app from idea to launch? I’m Niklas, a fullstack developer with 3+ years of professional experience, known for taking full ownership of projects, working independently, and delivering results you can rely on. I specialize in React, Next.js, and Node.js, and combine technical expertise with a German eye for detail and clear communication in both English and German. What I offer: ▶ Frontend development with React, Next.js, TailwindCSS - clean, responsive UIs ▶ Backend development with Node.js, REST APIs - fast and reliable ▶ Database & Auth with Supabase - secure and efficient ▶ Clean, maintainable code with TypeScript ▶ Apps optimized for performance and scalability ▶ Clear communication in English and German Why work with me? ✅ I’m a native German speaker fluent in English, so communication is smooth and professional. ✅ I focus on clean code, reliability, and on-time delivery. ✅ I treat each project as if it were my own, aiming for long-term client success, not just quick fixes. 🤝 Let’s bring your project to life! Send me a message and I’ll get back to you within 24 hours.

Took a product from zero to 200+ paying companies in 6 months. Built core systems powering 75%+ user retention at a YC S22 startup. Delivered zero-downtime data migration during a major fintech merger. 5+ years shipping production software across fintech and SaaS — from MVPs to scale. Currently building payment infrastructure at Asia's leading BNPL platform. I work end-to-end: problem scoping → architecture → shipping → measuring outcomes. One person, full context, no handoff gaps. Stack: Go, Ruby on Rails, Node.js, Vue.js/Nuxt, PostgreSQL, Redis, Docker, CI/CD Best fit for: • 0→1 SaaS products that need an engineer who owns outcomes, not just tickets • Fintech systems requiring reliability at scale • Async teams across time zones Let's talk about what you're building.

I build and improve production software for businesses that need more than just code. I work across web, mobile, AI, backend, infrastructure, integrations, and automation. What I do: I take ownership of full stack products end to end: architecture, frontend, backend, databases, CI/CD, cloud deployments, monitoring, performance, debugging, and direct technical communication. I prefer working with a lean team. Typical tech stack (not all the tools I use) : Frontend: React, Next.js, TypeScript Mobile: React Native, Expo, EAS, iOS, Android. Backend: Node.js, NestJS, Express, Python, FastAPI, Rust Databases and ORM/tools: PostgreSQL, SQLite, MongoDB, Supabase, Prisma, Mongoose, SQLAlchemy, Alembic, Redis, BullMQ, RabbitMQ. AI/ML and automation: OpenAI APIs, Anthropic/Claude APIs , Langfuse, MCP tooling, Whisper, Hugging Face, Modal, Replicate, AI agents Cloud and infrastructure: AWS, Vercel, DigitalOcean, Modal, Docker, GitHub Actions, CI/CD pipelines Monitoring and analytics: Sentry, PostHog, OpenTelemetry, logging, product analytics Payments, auth, and integrations: Stripe, Xendit, Polar, Clerk, Firebase Auth, AWS Cognito, OAuth, Shopify, GoHighLevel Got a cool project? Send me a message and we can discuss if we're a good fit

🚀 iOS Developer | Swift & SwiftUI Expert | Custom UI • API Integration • Scalable Architecture Hi, I’m Esma – an iOS developer with a strong foundation in Swift, SwiftUI, and Apple’s latest frameworks. I specialize in building modern, stable, and beautifully crafted apps from scratch, tailored to your business needs. Whether you're a startup founder, product owner, or team lead, I help you bring ideas to life from first line of code to App Store submission. Specialty in the following Technical Skills: -Swift, SwiftUI, Combine Framework, Xcode -Core Data, Firebase, Supabase, MongoDB Realm -AI Integration -API Integration and Data Fetching -MVVM Architecture -Notifications (Local and Push) -User Defaults, App Storage -AVKit for Multimedia Applications -Custom UI/UX Design in Figma -Version Control with Git 🧠 How I Work Discover & Plan • Understand your goals before coding • Define technical priorities and clear timelines Build & Deliver • Write clean, modular, testable code • Share early prototypes and optimize for performance Communicate & Collaborate • Async updates and regular video check-ins • Clear documentation and transparent decisions Launch & Support • Smooth App Store/TestFlight releases • Ongoing support, scaling, and iteration 🤝 What to Expect • Fast, reliable communication • Scalable, maintainable code • Product-focused collaboration • Available for critical support • Long-term commitment when needed

I ship AI-powered web apps that work in production. If you're building in the AI or real-time space, here's what I bring: . LLM integration + SSE streaming into clean, responsive UIs . Next.js, App Router, Server Components, TypeScript . Real-time features: live chat, voice, event-driven interfaces . Production-grade reliability: feature flags, analytics, error monitoring 7+ years in front-end. M.C.A. in Computer Science. Microsoft Certified Technology Specialist. Returned to engineering in 2023 and have shipped modern production UI since day one. If you need a developer who takes full ownership and communicates clearly — let's talk.

I’ve driven +50% net revenue growth, 4x ROAS, and 0.7%→2.5% CVR as a growth operator and ex-CGO at a premium lifestyle subscription brand. 30+ clients across 7 and 8-figure DTC, SaaS, and subscription businesses. Results are verified – Clutch 5.0, CEO-signed. I can see things that others don’t (in the data, not losing my mind). You’re running a $1M–$10M eCommerce or SaaS business. Growth is working – but it’s getting more expensive and less predictable. You’ve tried agencies. You’ve tried freelancers. Someone increased your CVR and your revenue didn’t move. Someone ran ads and ROAS looked great until you checked MER. You’re not sure who to trust anymore – and you’re right to be skeptical. That’s exactly where I come in. I’ve seen what happens when conversion rate gets optimized in isolation – LTV drops, MER deteriorates, and the business looks better on paper while quietly losing efficiency. Most growth people optimize the metric you asked for, not the business behind it. I don’t work that way. Every engagement starts with a revenue audit – finding the real constraint before touching anything. Then everything runs through a structured Growth Growth Experimentation Framework: every hypothesis across acquisition, retention, pricing, or conversion is data-driven, ICE-scored, and tied to measurable outcomes – RPV, CVR, CAC, and ROAS – with the full system oriented toward LTV and MER over time. Not random tests. Not isolated wins. One connected experiment engine where every decision compounds. I take 1–2 clients per month – not because of availability, but because this work requires full attention to produce results worth paying for. Verified results: → +50% annual net revenue growth → LTV +50% through cohort identification and activation → ROAS 0.75 → 4x while scaling paid spend → +16.9% ARR | +25% paid subscribers in 3 months (SaaS) → Conversion rate 0.7% → 2.5% across core funnel → +80% CVR uplift on main product page What I cover: → Full-funnel CRO and structured experimentation → Revenue analytics: LTV | CAC | MER | RPV | cohort modeling → BigQuery | Looker Studio | GA4 | PostHog | GTM → Shopify subscription and monetization (Recharge | Loop | Klaviyo) → Paid acquisition efficiency: Meta | Google → SaaS activation | pricing | product-led growth → AI-powered reporting and experimentation workflows Who I work with: 7 and 8-figure eCommerce and SaaS – DTC, B2B, CPG, and subscription. Credentials: → Clutch 5.0 (CEO-verified) | Top Performance Marketing Company 2025 → CXL Certified CRO | AIPMM Certified Product Manager | MBA → 30+ clients | 100% Job Success Score If your growth has plateaued and you’re not sure why – that’s exactly the problem I solve. Let’s find it in the first conversation.​​​​​​​​​​​​​​​​

CLIENT-oriented WordPress Developer available for LONG-TERM projects 🔥 8+ years building high-performance WordPress platforms, custom plugins & scalable WooCommerce systems 💸 Full integration into your product team with a focus on clean architecture and long-term maintainability 🚫 No micro-fixes ❗️ No low-effort template editing ABOUT ME I’m a Full-Stack WordPress Developer with over 8 years of professional experience delivering custom themes, plugins, scalable backend logic, WooCommerce architectures, and high-quality frontends built with modern JS, SCSS, and PHP. I help clients transform non-standard requirements into fast, stable, and maintainable WordPress solutions. My approach is rooted in strong engineering practices, clear communication, and a reliable “can-do” mindset focused on results. Whether you need WordPress SEO, WordPress speed optimization, or tailored functionality from a WordPress plugin developer, I deliver solutions that meet both business goals and technical standards. MY KEY ACHIEVEMENTS ✔ Led development of the MarketScale B2B content platform, building custom WordPress plugins, OAuth authentication, advanced channel logic, custom embed systems, Google Tag fixes, and a fully featured control panel — significantly improving content scalability and platform performance. ✔ Created a fully custom theme and plugin suite for Riverdance, including a booking calendar, custom account system, optimized page-speed architecture, and a dynamic SCSS/JS frontend built entirely from scratch to match brand identity at the highest standard. ✔ Architected and developed a complete gaming system inside WordPress for a multi-year project, implementing custom API endpoints, real-time game logic, IP-based user flows, a donation system, and a bespoke theme and plugin architecture supporting thousands of interactive sessions. ✔ Delivered pixel-perfect frontend implementation for an e-commerce brand (Basel & Co), converting Figma designs into high-quality SCSS, JS, and custom WP-Bakery templates, ensuring a premium UI/UX and smooth interactions. MY EXPERTISE & TECH STRENGTHS • As a web developer, I consistently build scalable, secure, and performance-driven solutions, focusing on long-term maintainability and clean architecture. • Although I specialize in WordPress, I also understand how businesses operate across multiple platforms — so if your project touches Shopify, I can coordinate with your Shopify developer or assist with cross-platform requirements to ensure consistency and seamless integration. • I help clients launch and maintain high-quality WordPress website design projects and can work with multiple builders, including Avada, Divi, Thrive Theme, Oxygen Builder, and Rehub — meaning I can also support requests involving WordPress Divi or custom Divi-based flows. • I have extensive experience in WordPress Elementor-based development and can deliver both simple and advanced WordPress website design workflows, ensuring everything matches your brand and UX expectations. • My design-to-development process includes transforming UI/UX concepts into pixel-accurate builds, including WordPress Figma handoffs where I convert Figma layouts into fully functional WordPress interfaces. • For projects requiring deeper backend customization, I work confidently as a WordPress theme developer, creating custom themes, flexible structures, and bespoke functionality tailored to complex business logic. • When projects require both advanced backend logic and structured content management, I work extensively with custom fields — if you need something highly specific like a WordPress developer ACF workflow, I can deliver it. • Alongside the above, I have more than 7 years of experience working with WooCommerce, including custom checkout flows, flexible product logic, payment integrations, and performance-oriented store optimization. • I have deep experience with API development and integrations, building custom REST endpoints, handling third-party webhooks, and implementing secure authentication workflows such as OAuth and SSO. • I have significant expertise in page-speed and Core Web Vitals optimization, working extensively with NitroPack, WP-Rocket, Litespeed, W3 Total Cache, server-level caching, and asset-loading improvements. • I have a strong DevOps background, including Docker, CI/CD pipelines, Webpack, Gulp, NPM, Lando, and version-control workflows using GitHub, GitLab, Bitbucket, and Jenkins. • I also bring SEO and marketing experience, using Yoast SEO, Google Analytics, Google Search Console, PPC fundamentals, and conversion-focused technical implementation. LET’S WORK TOGETHER If you want a reliable, senior-level Full-Stack WordPress Developer who can own the technical side of your project — from architecture to final deployment — just click “Invite” or “Hire” and let’s begin. 06.02.2026

🔝 _____ 𝑻𝒐𝒑 1% 𝑺𝒆𝒏𝒊𝒐𝒓 𝑴𝒐𝒃𝒊𝒍𝒆 𝑨𝒑𝒑 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒆𝒓 _____🔝 🏆 𝑺𝒖𝒄𝒄𝒆𝒔𝒔𝒇𝒖𝒍 𝑳𝒂𝒖𝒏𝒄𝒉 𝒐𝒇 𝑺𝒑𝒐𝒓𝒕𝒔 & 𝑯𝒆𝒂𝒍𝒕𝒉𝒄𝒂𝒓𝒆 𝑨𝒑𝒑𝒔 🏆 🌟 𝑷𝒐𝒍𝒊𝒔𝒉𝒆𝒅 𝑼𝑿 + 𝑨𝑰 𝑭𝒆𝒂𝒕𝒖𝒓𝒆𝒔 + 𝑺𝒆𝒂𝒎𝒍𝒆𝒔𝒔 𝑷𝒖𝒃𝒍𝒊𝒔𝒉𝒊𝒏𝒈 🌟 I’m a Philippines-based Senior Mobile App Developer with 8+ years of experience building high-performance, user-centric mobile applications for Sports and Healthcare industries. I specialize in crafting scalable cross-platform apps using React Native, Flutter, Firebase, Supabase, and Claude AI integration that deliver exceptional user experiences and real business value. 𝙄 𝙗𝙧𝙞𝙙𝙜𝙚 𝙩𝙝𝙧𝙚𝙚 𝙘𝙧𝙞𝙩𝙞𝙘𝙖𝙡 𝙬𝙤𝙧𝙡𝙙𝙨: - 𝐒𝐩𝐨𝐫𝐭𝐬 𝐀𝐩𝐩𝐬 → Real-time tracking, performance analytics, and community features with maps. - 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞 𝐀𝐩𝐩𝐬 → Secure patient tracking, wellness monitoring, and AI-powered insights. - 𝐀𝐈 + 𝐌𝐨𝐧𝐞𝐭𝐢𝐳𝐚𝐭𝐢𝐨𝐧 → Claude LLM integration for intelligent features combined with Stripe subscriptions and analytics. 💡 𝙒𝙝𝙖𝙩 𝙄 𝘿𝙚𝙡𝙞𝙫𝙚𝙧 ✅ 𝐂𝐫𝐨𝐬𝐬-𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Native-feeling apps with React Native and Flutter for iOS & Android Progressive Web Apps (PWA) with offline functionality and seamless performance ✅ 𝐒𝐩𝐨𝐫𝐭𝐬 & 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧 GPS-enabled sports tracking apps with Google Maps API integration Healthcare solutions with secure data handling and wellness features Real-time dashboards for fitness metrics and patient monitoring ✅ 𝐀𝐈 & 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐅𝐞𝐚𝐭𝐮𝐫𝐞𝐬 Claude LLM integration for personalized coaching, health insights, and smart recommendations Advanced push notifications and in-app subscriptions via Stripe ✅ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 Firebase & Supabase as BaaS for realtime database, auth, and storage Integration with Sentry (error tracking), PostHog & Mixpanel (analytics) RESTful APIs, SQL databases, and complete CI/CD pipelines ✅ 𝐏𝐮𝐛𝐥𝐢𝐬𝐡𝐢𝐧𝐠 & 𝐌𝐚𝐢𝐧𝐭𝐞𝐧𝐚𝐧𝐜𝐞 Full App Store and Google Play Store publication with compliance End-to-end delivery including testing, deployment, and post-launch support 🔧 Stack Snapshot Mobile: React Native • Flutter BaaS: Firebase • Supabase AI: Claude LLM Integration Payments: Stripe • In-App Subscriptions Maps & Features: Google Maps API • Push Notifications • Offline Functionality Analytics & Monitoring: PostHog • Mixpanel • Sentry Others: RESTful API • SQL • CI/CD • PWA 🤝 𝙒𝙝𝙮 𝘾𝙡𝙞𝙚𝙣𝙩𝙨 𝘾𝙝𝙤𝙤𝙨𝙚 𝙈𝙚 ✅ Client Timezone-based: Strong English communication and high availability ✅ Deep domain expertise in Sports & Healthcare app development with Claude AI ✅ Proven track record launching successful apps on both Play Store and App Store ✅ Full-cycle delivery from product design to production with modern analytics and monitoring 🔑 Skills (SEO Optimized) Senior Mobile App Developer • React Native Expert • Flutter Development • Firebase • FCM ( Firebase Cloude Messaging ) • Google Could Platform • Revenuecat • Profile Creation • Supabase • Claude AI Integration • Stripe Payments • Sports App Development • Healthcare App Development • Google Maps API • In-App Subscriptions • Push Notifications • Progressive Web App • Offline Functionality • RESTful API • API Integration • Product Development • Mobile App Development • LLM Integration • Real-time Applications • App Store Publishing • Google Play Publishing • CI/CD Pipelines • Sentry Monitoring • PostHog Analytics • Mixpanel • SQL Database • Cross-Platform Development • React Native Firebase • Flutter Firebase