Talent badge filter
Skills filter
Sudipta B.
$35/hr
100% Job Success
$400K+ earned
Available now
Offers consultations
Start of list.
End of list.
I do more than execute predefined tasks. I help clients clarify requirements, improve product decisions, select the right architecture and reduce technical risks before development becomes expensive. I help businesses and product teams design, build and scale reliable AI and SaaS products. With $400K+ earned across 158 Upwork projects, I bring the combined perspective of a solution architect, product consultant and hands-on developer. My focus is building scalable and maintainable products that solve real business problems and can evolve as the company grows. 🔷 WHAT I CAN HELP YOU BUILD 🤖 AI Products and AI Agents ✅ AI agents and multi-step agentic workflows ✅ AI-powered customer support platforms ✅ RAG and knowledge-base applications ✅ AI systems connected to live business databases ✅ Document processing and intelligent search ✅ LLM integrations using OpenAI, Anthropic and other models ✅ AI-powered business process automation 💻 SaaS and Business Platforms ✅ Multi-tenant SaaS applications ✅ Membership and association platforms ✅ Customer, partner and administrator portals ✅ Subscription and payment systems ✅ Recruitment and applicant-tracking platforms ✅ Marketplaces and operational management systems ✅ Role-based dashboards and reporting platforms 🏗️ Solution Architecture ✅ Product discovery and technical planning ✅ System, application and database architecture ✅ API and third-party integration strategy ✅ Cloud infrastructure and deployment planning ✅ Scalability and performance optimisation ✅ Legacy-system modernisation ✅ Security-conscious application architecture ✅ Technical due diligence and architecture reviews 📈 SELECTED PRODUCT OUTCOMES ✅ Designed and built AI chatbots and AI agents serving 50,000+ users ✅ Helped build and launch a product that ranked #3 Product of the Day on Product Hunt ✅ Led solution architecture and engineering for a SaaS platform generating $2M+ in monthly revenue ✅ Contributed to the development of a product later selected by Y Combinator ✅ Helped build a technology product that was later acquired by PandaDoc ✅ Successfully completed 158 Upwork projects with more than $400K in total earnings ✅ All of these engagements began through Upwork 🧩 CORE TECHNOLOGY EXPERTISE 🤖 AI: LLM integrations, RAG, AI agents, vector databases, prompt workflows and intelligent automation 🖥️ Frontend: React.js, Next.js, Vue.js, React Native and TypeScript ⚙️ Backend: Python, Node.js, PHP and Laravel 🗄️ Databases: PostgreSQL, MySQL, MongoDB and vector databases ☁️ Cloud: AWS, Microsoft Azure, Digital Ocean and Google Cloud Platform 🔄 Automation: n8n, Zapier, Make and custom API-based workflows 🔗 Integrations: CRMs, payment gateways, authentication providers, communication platforms and third-party business systems 🤝 WHY CLIENTS WORK WITH ME ✅ I contribute ideas instead of blindly following specifications ✅ I combine product thinking with hands-on technical expertise ✅ I explain complex technical decisions in clear business language ✅ I take ownership of architecture, development and delivery outcomes ✅ I identify unnecessary complexity and recommend practical alternatives ✅ I communicate risks, dependencies and trade-offs transparently ✅ I work closely with clients as an extension of their product and engineering function ✅ I support the complete journey from discovery and architecture to development, launch and optimisation Whether you are building a new AI product, modernising an existing SaaS platform or automating a complex business workflow, I can help you define the right solution and take it from initial architecture to production.
Sudipta B. has worked .
Amandeep K.
$10/hr
94% Job Success
$100K+ earned
Available now
Start of list.
End of list.
Hi! I am Amandeep Kaur, a Full Stack Developer specializing in AI-powered applications, SaaS platforms, mobile apps, and business automation solutions. I help startups, founders, and businesses turn ideas into high-performing digital products that are secure, scalable, user-friendly, and ready for real-world growth. With 10+ years of experience in software development, I combine modern technology, clean architecture, and product-focused thinking to build solutions that create measurable business value. Professional Highlights ---------------------------------------------- • Delivered 50+ web and mobile applications • Built scalable SaaS platforms and business solutions • Helped startups launch and scale MVP products • Developed AI-powered applications, automation systems, and custom software solutions My Professional Expertise ---------------------------------------------- AI & Automation Solutions • AI chatbots, virtual assistants, and intelligent workflows • OpenAI, Gemini, DeepSeek integrations • RAG-based AI knowledge systems • AI-powered SaaS features • Automation workflows using n8n, APIs, and custom solutions Mobile Applications (iOS & Android) • Native iOS apps (Swift, SwiftUI) • Native Android apps (Kotlin) • Cross-platform apps (Flutter, React Native) • App Store & Play Store deployment • Push notifications, real-time features, subscriptions, and payments Web Applications & SaaS Platforms • Modern web apps using React, Angular, and Vue • Scalable SaaS products and dashboards • Multi-tenant systems • Admin panels and business management platforms • Custom software development Backend, Cloud & Integrations • Node.js, Express.js, Django, Laravel, PHP • REST APIs and secure backend architecture • MongoDB, PostgreSQL, MySQL, Firebase • AWS, Google Cloud, Firebase deployment • Stripe, PayPal, Razorpay integrations • Twilio, WebRTC, WebSockets, and third-party APIs Why Clients Work With Me ---------------------------------------------- • Product-focused development approach • Clean, scalable, and maintainable code • Strong understanding of UI/UX and user experience • End-to-end development: idea → design → development → launch • Clear communication and reliable delivery • Solutions built for growth, not just quick fixes Industry Experience ---------------------------------------------- I have built digital products across multiple industries: AI tools & AI assistants | SaaS platforms | FinTech applications | Telemedicine & healthcare platforms | E-commerce applications | Health & fitness apps | Education platforms | Taxi & booking applications | Food delivery systems | Social networking apps | AI Chatbot applications | Travel solutions | Mental health and AI journaling products Professional Values ---------------------------------------------- • NDA-friendly & complete confidentiality • Agile delivery with milestone-based progress • Clear communication & regular updates • Technical planning and consultation support • Reliable, scalable, and quality-focused delivery Let us Start Your Project Building an AI product, SaaS platform, mobile application, or custom software solution? I provide end-to-end development support from planning and architecture to development and launch. I will bring my expertise, dedication, and product-focused approach to help you achieve your goals and build a successful digital solution. Your success is my priority.
Amandeep K. has worked .
Techwin Labs LLP
Associated with
Techwin Labs LLP
$40/hr
81% Job Success
Available now
Offers consultations
Start of list.
End of list.
✅ 10+ years building full stack software products used by real customers ✅ Helped founders turn ideas and messy prototypes into launch-ready MVPs ✅ Supported products that went on to raise funding and scale in competitive markets For over 15 years, I’ve helped startups and enterprise companies design and build AI-powered, scalable SaaS platforms and high-performance backend systems that align with real business goals and long-term growth. I primarily work on mid- to high-ticket projects where urgency, scalability, and production reliability matter. Here’s what I deliver: ✔️ AI Integrations & LLM Systems (OpenAI, Claude, RAG) Building AI-powered workflows, intelligent systems, and production-grade integrations using modern LLM architectures. ✔️ Full Stack Development for AI SaaS Development (React, Node.js, TypeScript, MongoDB) Secure, scalable SaaS platforms, dashboards, and web applications with clean UI, robust backend logic, and seamless integrations. ✔️ System Architecture & Backend Engineering Scalable architectures, RESTful APIs, database optimization, and high-performance systems designed for reliability and maintainability. ✔️ Frontend Engineering (React.js, Next.js) Responsive, high-performance interfaces with clean UX and strong integration with backend services. ✔️ Data & Integration Systems Complex data integrations, analytics tracking (Google Analytics), and performance optimization for real-world applications. ✔️ Development Workflow & Tooling Structured, version-controlled development ensuring maintainability, faster iteration, and long-term scalability. ✔️ Collaboration & Agile Delivery Efficient communication and delivery using Slack, Gmail, Jira, and structured agile workflows. ✔️ Community & Continuous Improvement Active contributor on LinkedIn and continuously improving development practices to stay aligned with modern standards. ⭐ Recent Client Feedback "Great communication and attention to detail. Planned carefully and delivered high-quality work. Would gladly work with Mateen again." "Stayed on budget and delivered exactly what we needed. This was a repeat engagement and won’t be the last. Highly recommended." Let’s start with a focused consultation. I’ll review your idea, identify risks early, and map out a scalable system built for real users.
Mateen K. has worked .
Deltacron
Associated with
Deltacron
Jayant K.
$18/hr
99% Job Success
$200K+ earned
Available now
Start of list.
End of list.
Hello! I'm Jayant, a seasoned full stack developer with over 14 years of experience in crafting innovative SaaS platforms and workflow automation systems. My mission is to help startups and growing businesses transform their ideas into robust, AI-native solutions that drive efficiency and scalability. I specialize in end-to-end platform development, ensuring that both the frontend and backend are seamlessly integrated to deliver exceptional user experiences. My expertise spans various technologies including React, Node.js, and cloud-native architectures, allowing me to create custom solutions tailored to your unique business needs. I believe in a collaborative approach, working closely with stakeholders to convert complex requirements into clean, reliable systems. If you're looking for a technical partner who can help you navigate the complexities of software development and turn them into scalable technology, let's connect and discuss how I can contribute to your success!
SmartData Inc Agency
Associated with
SmartData Inc Agency
$70M+
earned
Amaltas S.
$17/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
Start of list.
End of list.
I help startups and businesses build scalable SaaS development, AI implementation, and modern web products using React, Next.js, Node.js, AI, Python, and cloud technologies. React Developer | Next.js Developer | Frontend Engineer | UI/UX Implementation Specialist | SaaS developer & Web Application Expert | Full stack developer **Key Tech –** React.js Next.js developer Node.js developer MERN developer Python FastAPI SAAS developer SAAS expert react js React Native developer Next.js TypeScript JavaScript (ES6+) Redux Toolkit / Zustand Tailwind CSS Material UI / Ant Design REST APIs / GraphQL HTML5 / CSS3 Firebase / Supabase I specialize in building modern, responsive, and high-performance web applications using React js, Next.js, and TypeScript. From SaaS platforms and admin dashboards to customer portals and AI-powered applications, I develop scalable frontend solutions focused on user experience, performance, and maintainability. Over the past few years, I've worked on complex applications across SaaS, fintech, healthcare, logistics, eCommerce, and AI platforms. Whether it's developing pixel-perfect interfaces, integrating APIs, optimizing application performance, or building reusable component libraries, I focus on delivering clean, production-ready code. I can help you with: • React.js & Next.js application development • React Native mobile apps • Responsive UI/UX implementation from Figma, Adobe XD, or Sketch • Frontend architecture and component library development • REST API & GraphQL integration • Dashboard, CRM, ERP, and SaaS platform development • Performance optimization and Core Web Vitals improvements • Authentication, role-based access control, and secure frontend implementation • Real-time applications using WebSockets and Firebase • AI-powered frontend applications with OpenAI, Claude, and custom LLM integrations **Tech Stack:** React.js • Next.js • TypeScript • JavaScript • Redux • Tailwind CSS • Material UI • GraphQL • REST APIs • Firebase • Supabase • Node.js • MongoDB • PostgreSQL • AWS • Vercel, React Native I focus on building fast, scalable, and user-friendly applications that provide excellent user experiences while maintaining clean architecture and long-term maintainability. React Developer • Next.js Developer • Frontend Engineer • AI SaaS Application Development • Dashboard Development • UI/UX Development • TypeScript Developer • GraphQL Integration • API Integration • Web Application Development • Performance Optimization • Responsive Web Design, React Native developer • MERN, React js SaaS Developer • SaaS MVP Development • Multi-Tenant SaaS • B2B SaaS Platforms • AI SaaS Applications • React • Next.js • Python • FastAPI • Node.js • Supabase • PostgreSQL • Stripe • Subscription Billing • SaaS Dashboards • API Integrations • SaaS Automation • AI SAAS• OpenAI • Claude AI • Workflow Automation • Startup MVPs • Cloud Applications • SAAS marketplace Full Stack Developer Senior Full Stack Developer Full Stack Engineer Full Stack Web Developer Full Stack Software Engineer JavaScript Full Stack Developer TypeScript Full Stack Developer
Amaltas S. has worked .
Talentegia Technologies Pvt. Ltd.
Associated with
Talentegia Technologies Pvt. Ltd.
$4M+
earned
Ishtiaq A.
$30/hr
97% Job Success
$100K+ earned
Available now
Start of list.
End of list.
Senior Full Stack Developer | Top Rated Plus Developer | 300+ Projects Completed Are you seeking a Full Stack Developer, web expert, development partner, or business tech consultant? With 7+ years in full-stack and cross-platform development, I help founders and teams take products from concept to launch, web, mobile, and desktop, without the drama. I’ve delivered Full Stack Solutions, SaaS platforms, dashboards, marketplaces, and mobile apps used by real customers, shipping on time, documenting clearly, and keeping codebases clean for the next sprint. What you’ll get when we work together ✅Built-around-your-goals delivery: clear scope, measurable outcomes, short feedback loops. ✅Senior judgment: patterns that keep features stable, testable, and easy to extend. ✅Fast start: day-one environment setup, baseline CI, and a small first milestone. ✅Ongoing support: runbooks, monitoring, and pragmatic maintenance after launch. ✅Creative problem-solving: practical solutions when specs are evolving. Tech Stack ✅Front-end: TypeScript, React.js, Next.js, Vue.js, Nuxt.js, Angular, HTML5/CSS3, Tailwind, Ant Design, Material UI, Full Stack Development ✅Back-end: Node.js, Nest.js, Express.js, Koa, REST/GraphQL, Sequelize, TypeORM, PHP/Laravel, Symfony, .NET ✅Databases: PostgreSQL, MySQL, MongoDB, Redis, Firebase, GraphQL (resolvers/persisted queries) ✅Mobile / Cross-Platform: React Native, Flutter (store submissions, OTA updates) ✅QA: Manual testing, Jest, Mocha, Cypress, API testing with Postman ✅DevOps: Docker, Nginx, Jenkins, GitHub Actions, Amazon ECS ✅Cloud: AWS, Google Cloud Platform, Microsoft Azure, DigitalOcean Stop scrolling through endless profiles, you’ve found your build partner. Send a message to set up a quick consultation and outline your first milestone. Buzz words: Development Services: Product Development, Web Application Development, Website Development, Ecommerce Website Development, MVP Development, Application Development, Frontend Development, Backend Development, Full Stack Development, MERN Stack Development, Test Driven Development TDD, Agile Software Development, SaaS Development, Software Architecture and Design, API Integration, REST API Development, Third Party API Integration, ChatGPT API Integration, Website Performance Optimization, Progressive Web Apps PWA, Database Architecture, Database Design, Database Development, System Architecture, Responsive Design, Server Deployment Languages: TypeScript, JavaScript, PHP, C Sharp, XML, JSON, HTML5, CSS3 Frontend: ReactJS, NextJS, Redux, Redux Saga, React Query, MobX, VueJS, Vuex, Vuetify, NuxtJS, Quasar, Angular, Tailwind CSS, Ant Design, Material UI, Bootstrap, Styled Components, Emotion, SASS, LESS, CSS Grid, Flexbox Backend: NodeJS, NestJS, Koa, ExpressJS, Socket IO, PassportJS, Sequelize, TypeORM, Laravel, Symfony, ASP NET Core, ASP NET MVC, SignalR, GraphQL Databases: PostgreSQL, MySQL, MongoDB, Firebase, MariaDB, Redis Testing: Jest, Jasmine, Mocha, Cypress DevOps Cloud Infrastructure: Docker, Nginx, Jenkins, Continuous Integration and Continuous Deployment, AWS Lambda Amplify EC2 ECS CloudFront, Google Cloud Platform, Microsoft Azure, DigitalOcean, Heroku, Webpack, Git Bitbucket GitHub GitLab, Swagger, Vercel, NPM, Yarn APIs and Integrations: Stripe, PayPal, Elasticsearch, Twilio, OpenAI, GPT 4, GPT 4o Project Management and Collaboration: Agile, Scrum, Kanban, Jira, Trello, Asana, Slack, Monday, Notion, Confluence Design and UX: Figma, FigJam, Wireframing, Prototyping, UI Kits, Mobile First Design Other: Single Page Applications SPA, Server Side Rendering SSR, Client Side Rendering CSR, SEO, CMS WordPress Headless, Web3, NFT, Payment Gateway Integration, Data Scraping, CRM Development, Cross Browser Compatibility, Quality Assurance QA, Microservices, Modular Architecture, Event Driven Architecture, CQRS, Hexagonal Architecture, Domain Driven Design DDD, API Gateway, Webhooks, Rate Limiting, Throttling, CORS, Content Security Policy CSP Auth and Security: OAuth2, OpenID Connect, SAML, Single Sign On SSO, JSON Web Tokens JWT, Two Factor Authentication 2FA, Multi Factor Authentication MFA, Role Based Access Control RBAC, Attribute Based Access Control ABAC, Keycloak, Auth0, AWS Cognito, Web Application Firewall WAF, OWASP Top 10, Secrets Management, Vault Compliance: GDPR, HIPAA, SOC 2, PCI DSS, Audit Logs, Data Retention, PII Masking Performance and Delivery: SSR, SSG, ISR, Code Splitting, Lazy Loading, Incremental Builds, Edge Functions, CDN Caching, Image Optimization, Web Vitals, Prefetch, Preload Realtime and Messaging: WebSockets, Server Sent Events, WebRTC, Socket IO, Kafka, RabbitMQ, AWS SQS SNS, BullMQ, Redis Streams, Publish Subscribe DevOps and Infrastructure as Code: Kubernetes, Helm, Terraform, Pulumi, Ansible, ArgoCD, GitOps, Docker Compose, Nginx, Traefik, Full Stack Development
Ishtiaq A. has worked .
Sagar B.
$16/hr
92% Job Success
$90K+ earned
Offers consultations
Start of list.
End of list.
I am a full-stack healthcare and technology engineer with 14+ years of experience delivering compliant, scalable, and intelligent systems across Healthcare, FinTech, Web3, AI Automation, Mobile, and Gaming. My primary focus is healthcare, building platforms that meet the most rigorous compliance standards while integrating seamlessly into real-world clinical ecosystems. Healthcare Engineering & Compliance I specialize in HIPAA, FHIR R4, HL7, GDPR, PIPEDA, and SOC2-compliant product development, with hands-on integration experience across Epic, Oracle Cerner, Meditech, and Athenahealth. I design and build telemedicine platforms, EHR/EMR systems, patient portals, remote patient monitoring (RPM) tools, AI clinical assistants, medical imaging platforms, ePrescription and pharmacy integrations, IoT wearable connectivity, lab & diagnostic APIs, and enterprise healthcare SaaS. Every system I deliver includes secure PHI handling, audit logging, encryption standards, and role-based access controls. Key deployments: 1. Huma (global digital health, 70+ countries, 100M+ patients). 2. GoToDoctor (full telehealth ecosystem) 3. Biocalculus (AI cardiac monitoring with Bluetooth ECG streaming, cloud backend, and deep learning arrhythmia detection). AI Bots & Intelligent Workflow Automation I build NLP-driven, role-aware AI workflow agents that sit as an intelligent overlay on top of your existing application, reducing per-role workload without requiring a full platform rebuild. This approach is cost-efficient, non-disruptive, and has been deployed across both Web2 healthcare systems and Web3 decentralized environments. I integrate LLMs, build custom AI Workflow agents, and architect automation pipelines that scale with your team. FinTech, Web3 & Blockchain My FinTech experience covers crypto and stock trading platforms, investment dashboards, and DeFi tooling on Ethereum & Solana. I've built Web3 automation bots, smart contracts, and hybrid Web2/Web3 architectures, applying the same compliance and engineering rigor from healthcare into high-stakes financial systems. Mobile Development I am currently developing Kotlin/React Native/Flutter-based Android applications with a focus on healthcare, including real-time device streaming(wearable data), secure cloud data pipelines, and clinical-grade UI/UX. My mobile work spans patient-facing apps, clinician tools, and IoT device companions. Gaming & Creative Tools I've delivered high-concurrency systems for Asia's top-listed gaming companies and also built Canvas-based image editor/creator tools in the Web2 space, demonstrating range across demanding, performance-critical environments. White-Label Enterprise CRM, POS, ERP & Inventory I offer a pre-built, enterprise-grade white-label platform covering CRM, Point of Sale, Inventory Management, and ERP ready to launch under your brand. This saves months of development time and significantly reduces go-to-market cost for businesses needing a complete operational platform. Core Stack: GoLang · Node.js · Nest.Js · Python · Rust || Kotlin · Flutter · React Native · AngularJS · React.Js || Ethereum · Solana || FHIR R4 · HL7 · HIPAA · GDPR · PIPEDA · SOC2 Browse my portfolio and past work for live examples across every domain. If you're building in healthcare or need a cross-domain engineer who delivers -- let's connect!!!
Oodles Technologies
Associated with
Oodles Technologies
$5M+
earned
Eugene Z.
$30/hr
100% Job Success
$90K+ earned
Offers consultations
Start of list.
End of list.
🏆 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 (𝐓𝐨𝐩 𝟏𝟎%) 🏆 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 | 𝐢𝐎𝐒 & 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐒𝐰𝐢𝐟𝐭 | iOS App Developer Swift | 𝐊𝐨𝐭𝐥𝐢𝐧 | Android App Developer Kotlin | 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 | 𝟖+ 𝐘𝐞𝐚𝐫𝐬 I’m a Mobile App Developer focused on building scalable, secure, and production-ready mobile products for iOS and Android ecosystems. My work combines mobile app development, mobile app design, clean architecture, API integrations, Firebase workflows, authentication, analytics, payments, push notifications, and long-term product support. I focus not only on features, but also on performance, stability, maintainability, and business growth. As an iOS App Developer Swift specialist, I deliver native Apple ecosystem solutions through Swift, ios development, ios mobile app development, ios swift engineering, App Store readiness, watchos, apple watch, watchkit, and smart watch integrations. My iOS experience covers MVPs, product recovery, scalable production systems, enterprise apps, and secure ios applications. As an iOS App Developer Swift expert, I focus on polished UI, reliable architecture, optimized performance, and maintainable code. As an Android App Developer Kotlin specialist, I build native Android apps using Kotlin, android app development, android development, modular architecture, Firebase, APIs, payments, analytics, authentication, and production-ready release workflows. My Android App Developer Kotlin work includes scalable android app, android app developer, android application, and complex mobile ecosystems designed for long-term growth. As an Android App Developer Kotlin expert, I focus on clean architecture, stable performance, security, and maintainable Android products. I work as an iOS App Developer Swift and Android App Developer Kotlin for businesses that need reliable native mobile development, strong technical decisions, and product-focused delivery. This native expertise helps create secure ios and android solutions for fintech, e-commerce, booking platforms, fitness, health, taxi, transportation, delivery, dating apps, social media app, live streaming app, video streaming systems, AI-based mobile systems, SaaS, business apps, wearables, and IoT. When product goals require faster launch or flexible delivery, I also support react native mobile, react native developer, react native expert, react native app, react developer, react js, react redux, react node, react native firebase, cross platform mobile development, cross platform mobile, hybrid app, hybrid app developer, flutter, flutter developer, flutter dart, flutter firebase, and flutter app workflows. ⭐️⭐️⭐️⭐️⭐️ “Reliable mobile app developer delivering stable releases. From MVP recovery to scalable production systems.” 🎯 What I bring: ✔️ 8+ years as a mobile app developer across full mobile app development lifecycles. ✔️ Strong iOS App Developer Swift background for native ios app, ios developer, senior ios developer, ios app developer, and scalable swift ios development. ✔️ Strong Android App Developer Kotlin background for native android developer work, kotlin developer workflows, android app development, and enterprise Android delivery. ✔️ Experience with API integrations, Firebase, authentication, analytics, payments, push notifications, backend coordination, wordpress, shopify, and mobile app marketing. ✔️ Product collaboration with mobile app designer, mobile app developers, product teams, and business stakeholders. 📱 Mobile Applications I Develop: • Taxi & Transportation Apps • Booking platforms • Fitness & Health Apps • AI-based mobile systems • Security-focused ios and android solutions • Fintech & Payments Apps • E-commerce apps connected with wordpress and shopify • Business & SaaS applications • Social media app, live streaming app, and video streaming platforms • Wearables & IoT systems with watchos, apple watch, watchkit, and smart watch • Delivery and Dating Apps 🚀 Technologies & Skills I architect scalable ecosystems combining native and cross-platform engineering. iOS App Developer Swift products are powered by Swift, ios developer swift workflows, ios development, ios swift delivery, App Store readiness, and iOS App Developer Swift expertise. Android App Developer Kotlin products are powered by Kotlin, android application architecture, Firebase, API connectivity, and Android App Developer Kotlin expertise. I also deliver react native, flutter, hybrid app, and cross platform mobile ecosystems. As an iOS App Developer Swift professional, I help teams build polished iOS applications that are easy to scale. With both iOS App Developer Swift and Android App Developer Kotlin expertise, I support full-cycle mobile app development. iOS App Developer Swift and Android App Developer Kotlin delivery stays production-focused. 📩 Ping me. Let’s build something great.
Eugene Z. has worked .
Natife Mobile
Associated with
Natife Mobile
$700K+
earned
Roman B.
$40/hr
100% Job Success
$10K+ earned
Available now
Offers consultations
Start of list.
End of list.
🚀 Over 14 years and 320+ shipped products, we've helped startups and scaling businesses turn ideas into fast, profitable digital platforms. Our team has delivered 180+ custom web applications, 60+ mobile apps, and 40+ AI-powered software systems, each engineered to perform from day one and scale without friction. I lead a senior full stack developer team with deep roots in both frontend and backend engineering. We've driven results that speak for themselves: load times reduced by up to 73%, API response times cut from 1.8s to under 200ms, and clients growing revenue by 3-5× after launching platforms we built. Whether the project calls for a dedicated React developer, a WordPress developer, a mobile app developer, or a complete full stack developer team owning end-to-end delivery, we've executed at scale across every major industry. E-commerce and growth systems are core to what we do. Our full stack Shopify builds have processed $2M+ in Year 1 GMV. Custom React Shopify frontends we've engineered improved client conversion rates by 38%. Full stack ecommerce platforms we've shipped now serve 50,000+ daily active users. Full stack SEO is baked into our engineering process from day one, server-side rendering via React Next.js, structured data, Core Web Vitals optimization, helping clients rank on Page 1 for 400+ competitive keywords within 6 months of launch. SEO React architecture isn't an afterthought in our workflow; it's a first-class engineering requirement built into every frontend system we deliver. Our React developers architect scalable component libraries used across teams of 15+ engineers and consistently deliver UI scoring 90+ on Lighthouse performance audits. On mobile, we've shipped 60+ cross-platform React Native mobile applications with 800,000+ combined downloads and an average 4.7★ app store rating. Every React Native developer on our team works across the full product lifecycle, architecture, development, App Store submission, and post-launch iteration, using React Native Expo for fast, reliable iOS and Android deployment. Our WordPress developer practice has produced 90+ websites, from editorial platforms handling 500,000+ monthly visitors to WooCommerce stores carrying 10,000+ SKUs. Every website that leaves our team is performance-tuned, SEO-ready, and built so non-technical editors can manage it without touching a line of code. The full stack developer team I lead operates across the entire technology stack. On the frontend: React, React TypeScript, React Next.js, Vue.js, Webflow, Tailwind CSS, and Bootstrap. On the backend: Python, FastAPI, Django, Node.js, Laravel, PHP, REST APIs, and GraphQL. Our Python developer capability covers data pipelines processing 2M+ records daily and backend APIs handling 100,000+ requests per hour. Infrastructure runs on AWS, Firebase, and Supabase, with CI/CD pipelines that compress deployment time to under 8 minutes. We've delivered software across 15+ verticals including AI platforms, fintech, healthcare, legal document automation, education LMS, HR software, social media products, automotive ERPs, manufacturing systems, and digital marketing platforms with Meta, Google, and TikTok integrations. Our AI-powered platforms have reduced client manual review time by 65%, improved lead qualification accuracy by 44%, and automated 1,200+ repetitive operational tasks per month. The engagement model flexes to fit what you actually need. A solo React developer who owns frontend delivery end-to-end and ships a complete system in 6 weeks. A senior web developer who steps into an existing codebase, stabilizes releases, and reduces critical bug rates by 80% within 90 days, something we've done for 25+ companies. A full stack developer team scaling from 2 to 14 engineers mid-project without missing a single deadline. We've operated in every configuration and delivered in all of them. Whatever the scope - a new website, a SaaS product, a scalable React frontend, a CMS platform, cross-platform mobile apps, or a complete backend system, my team has the full stack developer depth, the React developer precision, the web developer range, and the product engineering experience to build it right the first time. 14 years. 320+ products. Millions of users served. Let's build yours.
EVNE Developers - Outcome-Based Delivery for Startups
Associated with
EVNE Developers - Outcome-Based Delivery for Startups
$600K+
earned
$33.33/hr
100% Job Success
$300K+ earned
Available now
Start of list.
End of list.
I am an ACM-ICPC World Finalist and software engineer. I have been developing backend and DevOps solutions using C++, Java, and Python since 2016. I have experience in multiple domains that include fintech, agrotech, health tech, IoT, and Saas. I have been working as a remote developer with globally distributed teams since 2019. I am a quick learner, good with communication, proactive and punctual human being. Nothing excites more me than a challenge that is necessary but difficult to solve. I am also a competitive programmer and expert in data structures and algorithms. I have a decent understanding of UNIX systems especially how different types of data structures are blended to solve complex problems of operating systems. I am a team player and can work as solo as well. I never compromise the quality of my work doesn't matter how the pressure is. And, I believe in requirement analysis as the most crucial part of engagement.
Niloy D. has worked .