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$48/hr
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$30K+ earned
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🏆 12+ Years in Software Delivery | 246 Projects Delivered | 98% Client Satisfaction
🔐 GDPR & HIPAA | ISO 27001 Delivery Standards | Fortune 500 Experience
Hi 👋
I'm Ostap, Senior Full Stack Developer and Team Lead representing a delivery team building SaaS Platform, Web Platform, and Web App / Web Application products across Healthcare, FinTech, AI, IoT, Logistics, Construction, Retail, Travel, and Enterprise.
As a Full Stack Developer, I lead product delivery across architecture, frontend systems, backend systems, automation, cloud infrastructure, AI workflows, and mobile ecosystems, delivered 246 projects, helped platforms scale to millions of users.
AI has fundamentally changed how I work. Claude Code is my daily driver. I use agentic orchestration patterns across the full development lifecycle, from planning and code generation to testing and review.
As a React Developer, Frontend Developer, and Next.js Developer, I build dashboards, portals, CRM systems, admin panels, analytics systems, and Web App products used by 1,000+ businesses.
As a Node.js Developer and Backend Developer, I deliver API Integration, REST API, authentication, RBAC, payment systems, automation workflows, Firebase infrastructure, and systems processing 50,000+ daily actions.
Strong as:
🚀 Full Stack Developer with React, Node.js, Next.js, TypeScript, JavaScript, REST API, PostgreSQL, MongoDB, MySQL, AWS, Docker, Kubernetes - Automation reduced workflows from 30 sec to 3 sec.
🚀 React Developer / Frontend Developer / Next.js Developer: React, Next.js, TypeScript, JavaScript, HTML5, CSS3, Vue.js, Bootstrap, UX/UI, Landing Pages, Web Design - Modernization reduced maintenance costs by up to 50%.
🚀 Node.js Developer / Backend Developer: Node.js, REST API, API Integration, RBAC, authentication, payments, data processing, automation, Firebase, cloud-native architecture - Monitoring accuracy improved by 45% with 40% less alert noise.
🚀 Python Developer: AI Implementation, OpenAI, Claude, Llama, LLM workflows, analytics, monitoring, automation systems - Analytics systems process 35,000+ automated records.
🚀 PHP Developer / WordPress Developer: PHP, WordPress, CMS platforms, business websites, portals, integrations, and scalable content systems.
🚀 Mobile Developer - Mobile ecosystems reached 280,000+ users, 323,000+ downloads, and 82 countries.
✔ Full Stack Developer delivery for SaaS Platform and Web Platform products — 246 projects from MVP to scalable production.
✔ React Developer delivery for dashboards, portals, CRM systems, marketplaces, and analytics platforms supporting 1,000+ businesses.
✔ Frontend Developer execution focused on maintainable UI, responsive Web App experiences, and long-term product growth.
✔ Next.js Developer delivery for production-ready SaaS interfaces, landing pages, customer portals, and Web Application products.
✔ Node.js Developer delivery for backend architecture, REST API, API Integration, payment workflows, RBAC, authentication, and automation systems.
✔ Backend Developer ownership for scalable databases, cloud infrastructure, data processing, monitoring systems, and enterprise integrations.
✔ Full Stack Developer + React Developer collaboration for MVP launches in as little as 3 months and platforms supporting millions of users.
✔ Frontend Developer + Next.js Developer delivery for modern Web Platform experiences across Healthcare, FinTech, AI, IoT, Construction, Logistics, Retail, and Travel.
✔ Node.js Developer + Backend Developer delivery for automation systems generating $100,000+ annual operational savings.
Need a Full Stack Developer to own architecture, delivery, and roadmap execution? I can lead the product side while our engineering team scales implementation.
Need a React Developer, Frontend Developer, or Nextjs Developer to improve your SaaS Platform UI, dashboards, portals, or Web App experience? We can add focused frontend capacity without slowing delivery.
Need a Nodejs Developer or Backend Developer to stabilize APIs, automation, integrations, payments, or cloud infrastructure? We can strengthen the backend while keeping product delivery moving.
For AI, automation, and data-heavy work, our team can add a Python Developer experienced in AI workflows, analytics systems, and automation pipelines processing 35,000+ records.
For CMS, legacy modernization, and business platforms, our team can add a PHP Developer and WordPress Developer for websites, portals, integrations, and content-driven ecosystems.
For real-time apps and mobile-connected products, we can add Firebase Developer capacity for authentication, notifications, analytics, and cloud-connected infrastructure.
Need extra capacity? Full Stack Developer, React Developer, Frontend Developer, Nextjs Developer, Nodejs Developer, Backend Developer — one team, measurable delivery.
📩 Send an Invite, or contact in DM on Upwork — let's discuss your SaaS, Web Platform, MVP, AI Product, Mobile App, or Web App.
Associated with
Relevant Software
$200K+
earned
$44.99/hr
100%
Job Success
$70K+ earned
Available now
Offers consultations
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Full Stack Developer with 15+ years of experience delivering scalable production platforms. I am not just a coder; I am a technical partner helping B2B enterprises and SaaS founders translate complex requirements into high-performance software.
If you are looking for a Full Stack Developer to take ownership of your architecture, security, and deployment, you are in the right place.
🚀 Why Clients Choose Me as their Full Stack Developer:
✅ Business-First Engineering: Unlike a standard Web Developer who just writes code, I focus on your ROI. I build systems that solve business problems, from complex API integrations to custom dashboards.
✅ Symfony & Laravel Expert: I specialize in high-end PHP frameworks (Symfony/Laravel) and modern frontend stacks.
✅ Scalable Architecture: My solutions are built to scale. I handle Database Architecture and DevOps (AWS/Docker) so you don't have to hire a separate Backend Developer.
Core Services & Expertise
As your dedicated Full Stack Developer, I cover the entire product lifecycle:
1. Enterprise Web Development (Symfony & PHP) I provide robust Full Stack Developer services using PHP 8.4, Laravel, and Symfony. Whether you need a legacy system modernization or a new SaaS platform, I deliver clean, documented code.
Backend Developer logic that handles complex data processing.
API Development (REST/GraphQL) for mobile and web apps.
Node.js integration for real-time features.
2. Modern Frontend & UI (React Developer) I act as a lead React Developer to build responsive, lightning-fast interfaces.
React Developer expertise for Single Page Applications (SPA).
Front End Developer mastery including HTML5, CSS, and Web Design implementation.
Experience integrating with React Native Developer teams to ensure web/mobile parity.
3. E-Commerce & CMS (WordPress Developer) While I specialize in custom software, I also provide high-level WordPress Developer services for enterprise needs.
Custom WordPress Developer plugin creation and theme development.
WooCommerce and Shopify Developer API integrations.
Performance optimization and technical SEO implementation.
My "Full Stack Developer" Process
When you hire me as your Full Stack Developer, you get a transparent, agile workflow:
Discovery: I analyze your needs better than a typical Web Developer, ensuring we pick the right stack (e.g., deciding between a Python Developer approach or a PHP solution).
Architecture: I design the database (MySQL/PostgreSQL) and infrastructure.
Development: Agile sprints as your Full Stack Developer and React Developer.
Deployment: CI/CD pipelines, Docker containers, and AWS setup.
Technical Stack & Capabilities
To ensure I can serve as a comprehensive Full Stack Developer, I maintain proficiency and familiarity across a wide range of technologies found in modern Web Developer environments:
Backend: PHP (Symfony, Laravel), Node.js, Python Developer (Scripting & Scraping integrations).
Frontend: React Developer tools, JavaScript, Angular (Maintenance), Web Design principles.
Mobile Context: Experience architecting APIs consumed by a Mobile App Developer (iOS/Android) or Flutter Developer.
CMS: Enterprise WordPress Developer workflows, Shopify Developer integrations.
Infrastructure: AWS, Docker, Linux, Database Design.
Case Studies & Results
SaaS Platform: Acted as Lead Full Stack Developer for a B2B platform, handling 10k+ daily transactions.
Legacy Migration: Replaced an outdated system with a Symfony/React architecture, improving performance by 300%—a result a standard Web Developer rarely achieves.
E-Commerce API: Built a custom middleware connecting a WordPress Developer site to an ERP system.
Frequently Asked Questions
Q: Can you work with my existing team? A: Yes. I often work alongside a dedicated Front End Developer, React Native Developer, or Mobile App Developer. I can also act as a CTO figure for smaller teams.
Q: Do you handle design? A: I have strong Web Design skills for UI/UX implementation. If you have a graphic designer, I will implement their vision pixel-perfectly as your Front End Developer.
Q: Why choose you over a generic agency? A: An agency assigns you a junior Web Developer. With me, you get a senior Full Stack Developer and React Developer with 15+ years of proven success.
Let's Build Your Solution.
If you need a Full Stack Developer who understands business, architecture, and code, let's talk. I am ready to bring your project to production.
Maks Pustynnikov Founder, Laspra Soft | Full Stack Developer | Symfony | React Developer
Maksym P.
has worked
.
Associated with
Laspra Soft
$70K+
earned
$40/hr
100%
Job Success
$1M+ earned
Available now
Offers consultations
Start of list.
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Mobile apps have become the primary way businesses connect with customers, streamline operations, and accelerate growth. As a Mobile App Developer, I help startups, growing companies, and enterprises transform ideas into scalable mobile products that deliver measurable business value. Whether you’re building a new application or modernizing an existing one, I focus on creating high-quality solutions powered by modern technologies and AI
For more than 10 years, our team has been designing, developing, and scaling mobile products for companies worldwide. We combine the expertise of Mobile App Developer specialists, React Native engineers, Flutter developers, iOS Developer professionals, and Android developers to build secure, scalable, and user-friendly mobile applications. Our experience also includes AI-powered features, backend development, API integrations, and cloud-native architectures
Our company metrics:
• 10+ years of software development experience
• 200+ successfully delivered projects
• 20,000+ tracked hours on Upwork
• 40+ software engineers and mobile specialists
• $1M+ earned through successful client engagements
• 5+ years average commercial experience per developer
As a Mobile App Developer, I work closely with founders to define product strategy, validate ideas, and deliver production-ready applications. Our team builds cross-platform solutions using React Native and Flutter, as well as native applications for iOS Developer and Android environments. We also integrate AI capabilities where they create real business value, helping companies automate workflows, personalize user experiences, and improve operational efficiency
Our projects range from startup MVPs to enterprise platforms supporting thousands of users. Every Mobile App Developer on our team collaborates with experienced Flutter developers, React Native engineers, Android developers, iOS Developer specialists, full stack developer teams, web developer professionals, and backend engineers to deliver reliable products from concept to launch
We specialize in mobile app development across healthcare, fintech, logistics, education, marketplaces, SaaS, workforce management, and customer engagement platforms. Whether the project requires Flutter, React Native, or native Android and iOS development, our focus remains the same—building applications that are fast, secure, intuitive, and ready to scale
Our expertise extends beyond coding. We help clients choose the right architecture, define product roadmaps, optimize user experience, and integrate AI-powered functionality into existing and new mobile products. Working alongside flutter developer, android developer, web developer, and full stack developer teams allows us to deliver complete end-to-end solutions instead of isolated development services
We regularly build applications using React Native, Flutter, Java, Kotlin, Swift, React, Python, Kotlin, and Laravel, integrating secure APIs, cloud services, payment systems, authentication, push notifications, analytics, and AI-powered automation. Every Mobile App Developer on our team understands how to create applications that perform consistently across Android and iOS devices while maintaining excellent user experiences
Every Mobile App Developer on our team focuses on building products that combine outstanding performance, scalability, and long-term maintainability. Using React Native, Flutter, Swift, native Android, and iOS Developer best practices, we create applications that support rapid business growth and evolving customer needs. Our full stack developer, web developer, flutter developer, and android developer teams collaborate throughout the entire product lifecycle, while AI technologies help deliver smarter mobile experiences, personalized recommendations, intelligent automation, and data-driven decision making
AI has become an important part of modern mobile app development. We help businesses integrate AI into mobile products through intelligent assistants, automation, predictive features, recommendation engines, and AI-driven user experiences. Instead of adding AI as a trend, we implement practical solutions that improve customer engagement and simplify business operations
Whether you need a Mobile App Developer to launch a new MVP, migrate an existing application to React Native or Flutter, modernize an Android application, improve an iOS product, or expand your engineering team, we can help. Our experience covers the entire product lifecycle—from discovery and architecture to development, testing, deployment, and long-term support
If you’re looking for a trusted Mobile App Developer with expertise in React Native, Flutter, iOS Developer, Android, Swift, AI-powered applications, and scalable mobile app development, let’s discuss your project and build a solution that creates lasting business value
Serhii L.
has worked
.
Associated with
WTT Solutions - AI and Software Development
$1M+
earned
$35/hr
100%
Job Success
$70K+ earned
Available now
Offers consultations
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Bring value to your business—that’s my top priority.
Every project I work on is built with a single objective: to deliver results that truly matter to my clients and partners. As a skilled and dedicated developer, I focus on providing optimal solutions tailored to your specific business needs, ensuring not just satisfaction but success. My goal is to deliver high-quality, cross-platform mobile software quickly and efficiently without compromising on excellence.
Do you need a cross-platform or Hybrid or Multi patform application? I am here to help your business grow and succeed.
With over 6 years of professional experience with Mobile App Development, Firebase, Flutter, Dart , API, User Authentication, React Native, JavaScript, User Profile Creation, React, Web Development, Android, Android App, iOS, Smartphone, In-App Purchases, PHP, Swift, Flutter Flow, AI Mobile App Development, Hybrid App Development, Location-Based Service, Node.js, Web Development, API, Java, Kotlin, C++, 3D Design, Electrical Engineering, Full Stack Development, PHP, Python, User Profile Creation. I have honed my skills in delivering top-tier mobile applications that work seamlessly across devices. My work combines technical expertise, attention to detail, and a deep understanding of my clients' industries to craft solutions that make a difference.
I specialize in developing cross-platform applications using the latest technologies and frameworks. Whether you're looking to launch an MVP or scale your existing app, I can help you achieve your goals efficiently.
Tech Stack:
🔸 Flutter – Ideal for creating smooth, high-performance apps for mobile, web, and tablets.
🔸 Dart – The foundation of robust and scalable applications.
Core Related Skills:
🔹 Flutter Bloc – For state management and building dynamic, responsive applications.
🔹 REST API – Ensuring seamless integration with backend systems for a robust app experience.
🔹 Clean Architecture – Developing maintainable and scalable codebases that stand the test of time.
🔹 Firebase – Utilizing powerful backend services for authentication, database management, and notifications.
🔹 Maps Integration – Adding geolocation features for navigation or location-based services.
🔹 Payment Gateways – Enabling secure and reliable in-app transactions.
🔹 GraphQL – For efficient querying and managing application data.
Industries I’ve Worked With
Over the years, I’ve had the privilege of working on diverse projects across several industries, which has broadened my understanding of various business needs:
💠 Healthcare: Building user-friendly apps for patient management, telemedicine, and fitness tracking.
💠 Telecom: Creating tools that improve communication and streamline operations.
💠 Social Media: Developing engaging platforms that foster connections and community building.
💠 Traveling
💠 IoT and Bluetooth Devices management
My approaches are:
Client-Centric: I believe in clear communication, transparency, and a deep understanding of your goals. Your success is my success.
Efficient Delivery: I prioritize delivering results on time, so your project progresses smoothly without unnecessary delays.
Long-Term Collaboration: I value strong partnerships and long-term cooperation, allowing me to focus deeply on your needs and adapt as your business grows.
Continuous Learning: Technology evolves rapidly, and so do I. I stay up-to-date with the latest trends to offer you the best solutions.
Let’s Build Something Great Together!
If you’re looking for a developer who can turn your ideas into reality, I’m ready to bring my skills and dedication to your project. Whether you need a high-performing mobile app, seamless integrations, or an app that scales with your business, I’m here to make it happen.
🌐 Tell me more about your project!
I’m excited to learn about your vision and explore how I can contribute to your success. Let’s connect and create a solution that not only meets but exceeds your expectations.
Together, we’ll transform your ideas into a valuable product that drives real results. Reach out to me today—I’m ready to get started!
Associated with
Shark Software
$33/hr
100%
Job Success
$600K+ earned
Available now
Offers consultations
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I am a Senior Fullstack Developer with over 15 years of hands-on experience in building and scaling Java , C# / Net , Angular applications for startups, enterprises, and SaaS platforms.
Currently, I’m working as the Chief Technology Officer at InventorSoft, a software development agency specializing in web and mobile solutions. I bring a strategic mix of technical depth, team leadership, and product vision to every project.
Why hire me🧐:
📌 Expert in Scalable Java and .Net Architectures
- Over 15 years of experience in developing Java, .Net, C#, Angular scalable applications from different domains.
- Backend systems built with Spring Boot (15+ years) – Delivered scalable microservices and high-performance business logic for enterprise-grade applications.
- ORM & data access with Hibernate – Applied advanced ORM techniques for efficient database interactions, query optimization, and data integrity in distributed systems.
- Frontend development with Angular & Thymeleaf
Designed and delivered 200+ robust backend systems for SaaS products, e-commerce platforms, and enterprise clients.
📌 Cloud-Native Platform Engineering
Specializes in building secure, scalable, cloud-native platforms using leading cloud providers:
- 8+ years of production experience with AWS – Deployed scalable, secure, and high-availability applications.
- 9+ years of hands-on Azure expertise – Delivered enterprise-grade solutions with Azure App Services, Azure DevOps, and SQL/Azure Storage.
- 5+ years of experience on Google Cloud Platform (GCP) – Built and deployed containerized microservices using GKE, Cloud Run, and Firebase.
📌 API-First & Cloud-Native System Design
- Strong background in API integration and microservice architecture.
- Created high-performance APIs for platforms serving 50K+ users, ensuring seamless third-party integration and scalability.
- Experienced in Docker & Kubernetes, enabling CI/CD pipelines and resilient containerized systems.
📌 Full-Stack Leadership & Agile Team Management
- Led and mentored teams of 5–25 developers through all stages of the SDLC—requirements gathering to deployment and maintenance.
- Specialized in building cross-functional teams for backend-heavy systems, modern UIs (React, Angular, Thymeleaf), and DevOps automation.
My latest achievement as a Software Architect:
🤝 Partnered with 45+ SaaS companies to design and deliver secure, scalable platforms using Spring Boot, AWS, and modern cloud services.
🚀 Helped 10 tech startups scale from MVP to production—selecting the right tech stack, defining cloud-native architecture, and assembling strong dev teams.
💼 Enabled 5 client acquisitions through the development of enterprise-grade software that attracted major buyers and investors.
🏭 Led a digital transformation project for a multi-billion-dollar oil company, delivering a secure, API-first platform that automated mission-critical operations.
🧩 Technologies I Specialize In
- Languages/Frameworks: Java, C#, .Net, Spring Boot, Hibernate, Thymeleaf, .Net Core
- Cloud Platforms: AWS (8+ years), Azure (9+ years), Google Cloud (5+ years)
- DevOps Tools: Docker (7+ years), Kubernetes (5+ years)
- Integration & Architecture: RESTful API integration, microservices, clean architecture, CI/CD pipelines
Clients that I am proud of:
💻 Shoeby – A fashion retail platform focused on modernizing the e-commerce experience with intuitive UI, product personalization, and seamless shopping journeys.
💻 CellRebel – Provides advanced mobile network analytics, helping telecom companies improve coverage and performance based on real user data.
💻 Blade – A technology-powered aviation company offering urban air mobility services, including helicopter and seaplane flights.
💻 Matics – A real-time operational intelligence system for manufacturers, offering production insights and process optimization across the factory.
💻 MedischeScholing – A medical e-learning platform that enables healthcare professionals to access, register for, and track accredited training and certifications.
➡️ Learn more about other projects on the InventorSoft portfolio
Keywords:
Java, Backend, Developer, Fullstack, Web, Cross-Platform, Mobile, Application, AI, OpenAI, Service, App, Development, Engineer, Integration, Build, Website, Expert, Spring boot, MySQL, Development Team, Integrated, SaaS Platform, remote, Full-stack, Senior, Software, Client Management, GraphQL, API, .NET, Asp.net, Programmer, Technical Lead, Dashboard, MVC, Developers, ASP.NET, AspNetZero, core, software, MAUI, C#, Angular, .Net, Core, Principal, Performance, Scalability, Microsoft, Blazor, SQL, Server, Frontend, React, Ruby on Rails, RoR/React, front-end, Tailwind, feature, ROR, TailwindCSS, Technical Staff, JavaScript
Maksym G.
has worked
.
Associated with
InventorSoft
$35/hr
100%
Job Success
$100K+ earned
Available now
Start of list.
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⭐ Magento Certified Developer | Shopware Certified Developer | Shopify Plus developer | Hyva | Shopware | Shopify
I’m Igor, a Magento Developer with 13+ years of experience delivering powerful, scalable ecommerce solutions for businesses worldwide. As a senior ecommerce developer with a strong background in Magento development, I have completed 790+ projects across B2B and B2C sectors — from building new platforms to rescuing, optimizing, and scaling complex ecommerce ecosystems.
As a hands-on Magento developer, Magento 2 developer, and ecommerce solutions developer, I specialize in building, optimizing, and supporting high-performing Magento 2 websites. I help companies launch, migrate, and scale their online store operations with a strong focus on performance engineering, architectural stability, and long-term growth.
Beyond Magento, I work as a Hyva developer, Shopware developer, Shopify developer, delivering fast, scalable solutions tailored for modern ecommerce businesses. Over the years, I’ve worked on complex B2B and B2C implementations as a full-stack ecommerce developer, creating custom functionality, integrating enterprise systems, and transforming business ideas into fully functional ecommerce platforms.
🚀 What I Do Best:
🔸 Magento Certified Developer | Magento 2 Developer | Ecommerce Architect
As a Magento-certified ecommerce developer, I design, build, and scale enterprise-level Magento solutions. My work includes full-cycle Magento 2 development, Magento migration services, version upgrades, security patching, and deep performance optimization. I act as a backend Magento developer and frontend Magento developer when extending core functionality with custom modules, API integrations, and scalable multi-store architectures.
🔸 Hyva Developer | Frontend Performance Engineer
As a Hyva developer, I transform Magento frontends into lightning-fast, modern user experiences. I focus on Core Web Vitals optimization, UX-driven frontend architecture, and conversion-focused performance improvements — ensuring every ecommerce website is built for speed, usability, and SEO success.
🔸 Shopware Developer | Platform Migration Specialist
I deliver flexible Shopware development, including Magento-to-Shopware migrations, plugin customization, and tailored ecommerce architecture strategies. As a migration-focused ecommerce developer, I ensure smooth transitions while preserving data integrity, integrations, and operational continuity.
🔸 Shopify Developer |Shopify Plus Developer
Beyond Magento, I work as a Shopify developer and Shopify solutions expert, building scalable Shopify stores, implementing custom features, and optimizing Shopify performance.
As a Shopify developer and Shopify Plus developer, I create tailored ecommerce ecosystems with strong SEO and conversion foundations.
As a Shopify developer, I connect content and commerce into seamless digital experiences.
🔸 Integration Developer | API Specialist | Ongoing Support Engineer
I specialize in ERP integrations, CRM integrations, payment gateway implementation, GraphQL customization, Elasticsearch optimization, and solving complex technical challenges. Acting as a long-term technical partner, I provide continuous maintenance, optimization, and scaling support for Magento, Shopify, Shopware, and WooCommerce platforms.
I focus not only on development, but on measurable business outcomes — faster load times, improved conversion rates, stable infrastructure under high traffic, and scalable architecture that supports long-term growth. Clients typically come to me when their ecommerce platform becomes slow, difficult to maintain, requires complex integrations, or needs to scale to the next level.
❓ Why work with me?
I combine deep technical expertise with a clear understanding of how ecommerce businesses grow. As a Magento-certified developer and senior ecommerce developer, I focus not only on writing clean, maintainable code but also on delivering real business results through performance optimization, scalable architecture, and seamless integrations.
With 790+ completed projects, I’ve solved complex challenges across Magento, Hyva, Shopware, Shopify, and WooCommerce environments — helping companies launch, stabilize, and scale with confidence. Clients choose me as a long-term development partner who communicates clearly, meets deadlines, and builds reliable ecommerce systems ready for continuous evolution.
If you’re looking for a reliable ecommerce developer who can build, optimize, or scale your online store, I’d be glad to discuss your project. Whether you need a Magento developer, Hyva developer, Shopware developer, Shopify developer, or WooCommerce WordPress developer — I’m ready to provide expert guidance and hands-on development.
Let’s connect and turn your ideas into a fast, scalable, and successful ecommerce solution.
Associated with
IT Delight
$300K+
earned
$35/hr
100%
Job Success
$300K+ earned
Available now
Offers consultations
Start of list.
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I build enterprise .NET, MERN, and full-stack systems, Azure cloud architectures, and Microsoft SharePoint + Power Platform solutions that eliminate manual work - software engineer with 12+ years of experience, 7,000+ hours on Upwork, and a 100% Job Success Score.
If your team runs on Excel and manual approvals, I help you automate it properly with AI-powered tools and scalable web platform architecture.
Microsoft Power Platform (workflow automation)
I help teams modernize operations with Microsoft Power Platform without turning it into an unmaintainable patchwork. Power Apps + Power Automate + Microsoft SharePoint + Dynamics 365: apps, workflows, and integrations that eliminate manual work. Whether you need a full app development cycle or targeted Automation for Microsoft 365, I deliver connected solutions that scale.
Back-End Engineering ( .NET Core, Node )
My deep expertise lies in the .NET Core ecosystem and Node.js, where I've worked extensively with .NET Framework, ASP.NET Core, C#, Entity Framework, and Microsoft SQL Server.
Key achievements:
▪️Delivered 50+ enterprise-level full-stack applications, improving business process efficiency by 35–70% through automation, optimized logic, and scalable architectures.
▪️Built 80+ RESTful and SOAP-based APIs powering real-time integrations with CRMs, ERPs, payment gateways, IoT devices, and mobile apps.
▪️Optimized 250+ SQL databases, including data warehouse architectures, increasing query performance by up to 10× and ensuring 99.9% uptime in production.
▪️Designed secure, cloud-native systems using Azure App Services, Azure Functions, Azure Event Hub, Azure Service Bus, Azure SQL, and Azure Application Insights.
Front-End & Full Stack Web Application Development
On the front end, I design and build modern, responsive web application interfaces using HTML5, CSS3, JavaScript, TypeScript, Bootstrap, React, Next.js, and Angular (modern MERN stack). As a frontend and full-stack engineer, I focus on performance, accessibility, and seamless back-end integration.
Key achievements:
▪️Delivered 40+ full-stack and responsive web platform applications using Angular, Next.js, and React, integrated with ASP.NET Core back ends.
▪️Built 30+ MERN stack ( React, Next.js ) mobile-friendly UI experiences, improving user engagement and retention by up to 60%.
▪️Implemented UI performance tuning that reduced load times by up to 50%.
▪️Delivered full stack developer-level hybrid solutions: React, Next, or Angular front ends powered by C# / ASP.NET / MongoDB services, reducing costs and improving time-to-market for SaaS platform and web application projects.
Azure Cloud, Power BI & Data Analytics
I design complete Azure cloud environments and end-to-end data analyst-grade analytics systems:
Azure infrastructure:
▪️Azure App Services, Azure SQL, Azure Cosmos DB (with MongoDB API compatibility)
▪️Azure Functions, Logic Apps, Service Bus, Event Hub
▪️Azure Storage, Azure Active Directory, Key Vault
▪️CI/CD pipelines with Azure DevOps and GitHub Actions
▪️AWS migrations and hybrid cloud architectures
▪️Azure Data Factory pipelines for ETL and data warehouse integration
Power BI | Looker Studio & dashboard analytics:
▪️30+ automated dashboard solutions with KPI Dashboards for operations, finance, and logistics
▪️Data analyst-ready models integrating Azure SQL, Azure Data Factory, and Azure Data Lake
▪️Report automation replacing manual Excel and Tableau-style workflows with live Power BI dashboards
▪️Looker Studio integration for clients on Google ecosystem alongside Azure stacks
▪️Data visualization layers connecting data warehouse, Azure SQL, MongoDB, and operational databases into unified KPI Dashboards
▪️AI-Powered Solutions & Modern App Development
I integrate AI-powered capabilities into enterprise workflows:
▪️Chatbot development using Azure Bot Service, OpenAI API, and custom NLP pipelines for customer support, internal helpdesks, and ERP assistants
▪️AI-powered document processing and classification integrated with Microsoft SharePoint Power Automate, MERN stack
▪️MVP development for SaaS platform products: from concept to deployed full-stack web application in weeks
▪️Tool development for automation, monitoring, and reporting, replacing manual analyst work with intelligent pipelines
💡Business Impact
My work is focused on measurable outcomes, not just code:
▪️+40% e-commerce sales through performance optimization and React / Next.j checkout redesign
▪️25% lower infrastructure costs for a SaaS full-stack platform after migrating to microservices using .NET Core + Azure
▪️Reduced manual reporting time by 80% via automated Power BI, Looker Studio + Azure Data Factory pipelines
▪️Delivered Automation System solutions cutting manual data entry by 60% across logistics and healthcare clients
I ensure your systems are future-ready, secure, and efficient, so "INVITE" me for your job!
Igor T.
has worked
.
Associated with
Reenbit Microsoft-Certified Agency
$300K+
earned
$33.33/hr
100%
Job Success
$10K+ earned
Start of list.
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👋 Hello! I’m Alex - a WordPress Developer and Shopify Developer with 8+ years of experience as a professional WordPress Developer building fast, clean, and conversion-driven websites. As a WordPress Developer, I specialize in WordPress Elementor, WordPress website design, WordPress SEO, and WordPress speed optimization, delivering high-performance websites that look great, load instantly, and drive real business results.
As a WordPress Developer and web developer, I build high-converting WordPress websites and WooCommerce solutions that are SEO-friendly, mobile-optimized, and easy to manage. My work as a WordPress Developer and web developer focuses on clean architecture, Elementor-based layouts, Core Web Vitals, UX/UI best practices, and long-term WordPress website stability, while also supporting Shopify projects when needed.
If you’re looking for a WordPress Developer, web developer, or Shopify Developer who understands SEO, writes clean code, and delivers professional-grade results on time - you’ve found your WordPress Developer.
🚀 Available around the clock - your WordPress Developer on demand
💬 Have an idea or an issue? Message a WordPress Developer and I’ll respond right away.
🚀 What I Offer as a WordPress Developer & Shopify Developer
WordPress Developer services: full WordPress CMS development and setup
WordPress Developer expertise in custom WordPress theme development
WordPress Developer level custom plugin development (PHP, JS, ACF, CPT, WPML)
WordPress Developer solutions for WooCommerce store setup & customization
WordPress Developer and Shopify Developer support for eCommerce projects
WordPress Developer-led Shopify to WordPress migration and vice versa
WordPress Developer builds with Elementor, Elementor Pro, Gutenberg, Divi, BricksBuilder, WPBakery
WordPress Developer API integrations (Stripe, PayPal, CRM, automation tools)
WordPress Developer speed optimization (PageSpeed, GTmetrix, Core Web Vitals - under 2s)
WordPress Developer troubleshooting, maintenance, security hardening & malware removal
WordPress Developer hosting migration, backups, and server optimization
WordPress Developer workflow: Figma / XD / PSD to WordPress
⚙️ Tools & Platforms Used by a Professional WordPress Developer
WordPress Developer tech stack: PHP, HTML, CSS, JavaScript, jQuery
WordPress CMS / WooCommerce
Elementor / Elementor Pro
Gutenberg / Divi / BricksBuilder / WPBakery
Advanced Custom Fields (ACF) & Custom Post Types (CPT)
WPML / Multilingual WordPress
Sensei / LearnDash / BuddyBoss
Astra & custom WordPress themes
Cloudflare / WP Rocket / LiteSpeed
SEO & performance tools used by an experienced WordPress Developer
💡 Why Clients Choose Me as Their WordPress Developer
8+ years of experience as a WordPress Developer
Proven background as a WordPress Developer on 100+ projects
Deep expertise in custom WordPress CMS development
Strong focus on speed, SEO, and conversions - from a WordPress Developer perspective
Clean, scalable, well-documented code by a senior WordPress Developer
Transparent communication and reliable deadlines
Long-term support from a dedicated WordPress Developer
✅ Every project is handled personally by a WordPress Developer who cares about real business results - not just code.
💬 Let’s Work Together
If you need a WordPress Developer or Shopify Developer who understands both the technical and business sides of web development, let’s talk.
📩 Message your WordPress Developer today, and let’s build a fast, modern, and scalable WordPress website that truly performs.
Associated with
NextG
$20K+
earned
$55/hr
100%
Job Success
$500+ earned
Available now
Offers consultations
Start of list.
End of list.
Most developers deliver code. As a Top Rated Plus Full Stack Developer, Mobile App Developer, and SaaS Developer with a 100% Job Success Score on Upwork, I deliver systems - ones that teams can confidently run, scale, and build on. Whether it is Mobile App Development, SaaS Development, or a full stack web product, I stay accountable for it long after the first release.
Specialized in Full Stack Development and Mobile App Development with a strong focus on React Native, Flutter, Python, and SaaS Development architecture. As an experienced Full Stack Developer and Mobile App Developer focused on cross-platform iOS and Android apps and SaaS platforms, I work across the entire stack - from React Native and Flutter mobile apps to Python, Node.js, and Laravel backends. With a strong background in SaaS Development, backend API design, and mobile-connected platforms, I bring a backend-first mindset and deep attention to scalability and long-term maintainability. Proficient in React Native, Flutter, Python, Node.js, AWS, and Microsoft Azure as a Software Developer and Senior Web Developer.
Core Specializations
Full Stack Mobile App Development
As a Full Stack Mobile App Developer and React Native Developer, I deliver cross-platform iOS and Android applications that perform like native products. As a Flutter Developer and Flutter Mobile App Development specialist, I build unified experiences where a shared codebase does not mean compromising quality. As a Mobile App Developer covering mobile app design, mobile app development, and full deployment lifecycle, I treat performance and reliability as non-negotiable from day one - not afterthoughts.
Full Stack Web & React Development
As a React Developer and Full Stack Developer, I build end-to-end web solutions using React, Vue, Next.js, and TypeScript on the frontend. As a Web Developer handling both Web Design and component architecture, I create scalable, maintainable interfaces backed by Python (FastAPI, Django, Flask), Node.js, and Laravel. As a Full Stack Developer with React and Node.js expertise, I own delivery from database schema to deployed product - clean API contracts, proper state management, and optimized data flow across every layer.
SaaS Development & Backend Architecture
As a SaaS Developer, I design and build SaaS Development platforms from MVP to mature multi-tenant products - including subscription logic, role-based access, and SaaS business development-ready architecture. As a Python Full Stack Developer and Backend Developer, I build robust APIs with Node.js and Python for high concurrency workloads. As a Full Stack Developer PHP specialist, I support Laravel and PHP-based ecosystems when projects require it. As a DevOps-minded engineer and React Native Developer, I manage infrastructure as code across AWS and Microsoft Azure environments.
AI Integration & Cloud Infrastructure
As a Full Stack Developer focused on AI Integration, I connect web and mobile frontends to AI-powered backends - implementing smart search, real-time suggestions, and LLM-driven features using OpenAI API and LangChain. As an AWS Architect with expertise in AWS (Lambda, S3, DynamoDB), Microsoft Azure, and Azure DevOps, I ensure data handling is high-speed, cost-effective, and secure across Web, iOS, and Android platforms. As a React Web Development and API Integration specialist, I build the connective layer that makes AI functionality feel responsive and production-ready.
Clients typically work with me when they need:
- Full Stack Developer to own frontend and backend
- Mobile App Developer for React Native, Flutter, and native iOS/Android
- SaaS Developer for SaaS Development platforms built to scale
- React Developer or React Native Developer for web and mobile projects
- Python Full Stack Developer or Backend Developer for API-driven systems
- Senior Web Developer or Front End Developer with full stack depth
- AI Integration and API Integration for new or existing platforms
- AWS Architect or Azure-based cloud infrastructure and DevOps pipelines
Technical Expertise
- Mobile: React Native, Flutter, Swift, Kotlin, TypeScript, Redux Toolkit, React Query
- Frontend: React, Vue, Next.js, TypeScript, Tailwind CSS
- Backend: Python (FastAPI, Django, Flask), Node.js, Laravel, PHP, REST & GraphQL
- AI & Automation: OpenAI API, LangChain, Vector Databases, RAG, AI Machine Learning
- Data & Cloud: AWS (S3, Lambda, DynamoDB), Microsoft Azure, PostgreSQL, Redis
- Tools: Docker, CI/CD, Git, Stripe, DevOps pipelines
I do not take on Wordpress developer projects, SaaS marketing, Google Ads, or Digital Marketing.
If you need to build a product from scratch, ship an MVP, or scale an existing SaaS Development platform - as a Full Stack Developer and Mobile App Developer, let us discuss your project.
Associated with
🔺 Jett Develops | Full-Cycle Design and Development Company, $250M Raised by Clients
$500K+
earned
$55/hr
100%
Job Success
$90K+ earned
Offers consultations
Start of list.
End of list.
🏆 Top Rated Plus | 100% Job Success Score
Proven track record of delivering high-quality enterprise solutions and custom software with maximum client satisfaction and zero friction.
Need reliable Flutter Mobile App Development that performs flawlessly under real user load, scales seamlessly with your growth, and doesn’t require constant hotfixes after launch?
As a Flutter Mobile Developer PM, I deliver production-ready, high-performance iOS and Android applications. My approach combines rock-solid scalable architecture, clean code, and seamless backend integration, ensuring your product remains ultra-stable during traffic spikes and heavy data usage.
📊 Our Agency Blueprint
With 10+ years of agency experience in Flutter Mobile App Development, 250+ delivered projects, and 15,000+ hours spent mastering mobile architecture, we transform complex business ideas into high-performing digital ecosystems.
On average, our team improves app performance by 40–60%, slashes crash rates by 30–45%, and boosts scalability capacity by 35–55% through structured architecture refactoring.
✨ Why Our Flutter Solutions Stand Out
- Elite Status: Top Rated Plus with a flawless 100% Job Success Score.
Global Scale: 250+ custom applications launched successfully across 45+ countries.
- Industry Versatility: Deep expertise in SaaS, FinTech, Marketplaces, Healthcare, and Enterprise systems.
- Speed & Stability: Advanced performance tuning that reduces load times by up to 60% and cuts crash rates by 40%.
- Bulletproof Security: Secure authentication, multi-role systems, and data encryption.
- Future-Proof Code: Clean, maintainable codebases that significantly lower long-term maintenance costs and support 5–10× user growth.
🚀 Flutter Mobile App Development Services
📌 Cross-Platform Flutter Development
High-fidelity iOS and Android apps built from a single, optimized codebase.
Custom mobile architecture tailored for long-term corporate scalability.
UI/UX integration optimized for 60fps responsiveness and smooth animations.
📌 Backend & API Integration
Secure backend connectivity aligned with strict Flutter Mobile App Development standards.
REST/GraphQL API integration and real-time data synchronization (WebSockets).
Seamless integration of payment gateways (Stripe, Apple Pay, Google Pay) and third-party SDKs.
📌 Architecture, Refactoring & Stabilization
Rescuing and stabilizing legacy Flutter applications.
Eliminating memory leaks and debugging complex crash loops.
Codebase restructuring for enhanced maintainability and faster feature onboarding.
📌 Performance Optimization
Deep app profiling and bottleneck detection.
Advanced network request optimization and smart caching strategies.
Minimizing backend latency impact on the mobile user experience.
📌 CI/CD, Deployment & PM Oversight
Automated CI/CD pipelines for fast, reliable mobile releases.
Full App Store & Google Play deployment management.
Active Project Management (PM) ensuring transparent communication, clear milestones, and on-time delivery.
🔧 Workflow & Tech Stack
Discovery & Analysis: Defining product goals, user journeys, and technical constraints to design a scalable Flutter Mobile App Development architecture.
Architecture & Planning: Designing system logic, state management (Bloc, Provider, or Riverpod), and backend integration layers.
Development & Integration: Writing clean Flutter code, connecting APIs, and ensuring pixel-perfect UI execution across all screen sizes.
Testing & QA: Rigorous validation of performance under load, crash rates, and cross-device compatibility.
Launch & Optimization: Structured production deployment with post-launch monitoring, typically boosting app efficiency by 40% within the first 90 days.
💡 Data-Backed Results (Recent Projects)
Up to 60% faster app load times.
Up to 40% reduction in crash frequency.
Up to 50% improvement in API reliability.
5× growth in active users sustained without a single second of downtime.
🌎 Industries Supported
🏥 Healthcare & Telemedicine (HIPAA-compliant workflows)
🏦 FinTech & Secure Payments (High-security data handling)
🛒 Marketplaces & E-Commerce (High-traffic catalog & checkout optimization)
📈 SaaS & Data Analytics (Real-time dashboards & metrics)
🎓 EdTech & Learning Platforms (Smooth media streaming & offline modes)
🏢 Enterprise Tools (Internal business automation & role management)
I serve as the PM for the mobile team, coordinating execution and ensuring stable product releases.
🚀 Let’s build a Flutter Mobile App Development solution that scales, performs, and grows with your users.
📞 Looking for a developer and PM who takes full responsibility for architecture and code stability? Send me a message, and let's discuss your project.
Associated with
🔺 Jett Develops | Full-Cycle Design and Development Company, $250M Raised by Clients
$500K+
earned