Main specialization – C++ (STL/MFC, QT, PostgreSQL, C# - on board). 15+ years of experience. Open to start new project on following tech stack: 1. Web: Python (any web framework), React, React-Admin, PostgreSQL, Dockers, Amazon Web Services, FreeSwitch. 2. Desktop, client/server solutions: C++, QT Framework, QML, ModBus, C#. Last few years work with C++ on Debian (PostgreSQL, ncurses, thermal printer). Recently extensively switched to QT framework (Music Score scanning software). Had a chance to use general logic experience to lead engagement projects in completely unknown for me areas like Lotus Notes/Domino, software for greenhouse heating systems construction, some projects on Delphi. Searching clients for cooperation to outsource software products development. My formula: Scope of Work – Time – Budget (W-T-B). W-T-B key principles: - establish project required development process; - define milestones; - provide “access points” for process control from a client side; - self-documented code; - quality assurance; - support.

Full stack developer with 10 years of experience | top 1% on Upwork (Expert-Vetted) ✅ I turn ideas into real applications your users can depend on 💡 Recent work: 🔹 Product Architect at Upwork, leading a team of 100+ engineers within Upwork's Engineering Talent Cloud 🔹 Led frontend for Autobound's AI sales automation platform - grew from a single-engineer startup to $4M raised and millions in revenue (Vue.js/Nuxt + Chrome extension + micro-frontends) 🔹 Built full stack for Augmento's AR/VR product - used by 1,000+ brands and 100K users across retail and real estate 🔹 Migrated DriverHRIS - 1,000+ screens from Vue 2/.NET to Vue 3 + Node.js microservices, with a 10x (1,000%) performance gain 🔹 Rebuilt Wawibox (German dental marketplace) - full Nuxt 2 → Nuxt 3 SSR → Nuxt 4 migration, 80% faster load time I also co-founded Softonix, a 25-engineer Vue.js | Node dev team in Lviv 🇺🇦 - so if your project grows past one developer, I can scale the team without handing you off to strangers) 🎁 Something extra: I'm running free dev + AI-readiness audits for a few teams right now. Send me your repo or a quick walkthrough of your delivery flow (Figma → Jira → GitHub → review), and I'll come back with: 🔍 where your velocity is actually leaking - review bottlenecks, rework, estimates that never hold 🏗️ how your codebase really looks on quality, architecture, and performance 🤖 how much more your team could be getting out of AI than they are today You keep the findings whether we end up working together or not! Want to scope something, or should I just run the audit first? I usually reply within an hour 🚀 Why should you hire me as a Full Stack Developer? ▪ 200+ successful projects across fintech, healthcare, e-commerce, HR tech, logistics, and AI. ▪ 100+ happy clients who have seen tangible business growth. ▪ Expert in Vue.js, Nuxt, React, Next.js, Node.js, TypeScript, .NET, PostgreSQL, AWS. ▪ 500+ API endpoints and 50+ microservices designed, documented, and shipped to production. ▪ 30+ legacy rescues and framework migrations completed with zero downtime. ▪ 60+ production applications launched and still running - some for 8+ years. ▪ Delivered investor-ready MVPs in 4-6 weeks for urgent launches and funding rounds. ▪ Built cross-platform products for web, mobile (iOS & Android), and desktop on one shared codebase. ▪ 100+ code audits and architecture reviews delivered for founders, CTOs, and investors. ▪ 40+ engineers hired, trained, and mentored over the last 6 years. ▪ 100% Job Success across 10 years of client work.

$53M+ Raised by Clients | 84+ Products Delivered | 100% Job Success | 14 Years in SaaS ✅ 14 years as a Full Stack Developer, now CTO & Founder of Gearheart, an Enterprise SaaS product development studio ✅ Co-Founder & CTO at Beyond the Wow, an AI-native MVP studio ✅ As a SaaS Developer, I've helped 84+ startups and growth-stage SaaS teams scale their products ✅ Built SmartSuite from scratch as lead Full Stack Developer - $38M raised, 7M+ users ✅ 2-4x faster delivery as a SaaS Developer using Claude Code, Lovable, Cursor, and Replit ✅ Top Developer at Clutch and Goodfirms I'm a CTO and SaaS Developer specialist with 20 years experience as a Full Stack Developer for SaaS companies, working as a React Developer on the frontend when the project calls for it. Most founders fail building wrong things. As a SaaS Developer and MVP Developer focused on SaaS architecture and rapid deployment, I personally deliver on 84+ products for 70+ SaaS clients across 7 countries. Depending on the project I work as a React Developer, WordPress Developer, or Mobile App Developer. I bring SaaS Developer speed with Full Stack Developer depth and Software Developer expertise into every project. 🌟 ENGINEERING STANDARD - SAAS DEVELOPER EXCELLENCE My SaaS Developer standard comes from 14 years working as a SaaS Developer, delivering results like: - SmartSuite - a SaaS Developer MVP I built from startup concept as React Developer and Full Stack Developer SaaS specialist: $1.2M ARR in 4 weeks, $38M raised, Capital One trusted - Globalli - a SaaS Developer build for enterprise: HR/payroll across 125+ countries, SOC2 Type II, $15M raised, delivered as a SaaS Developer specialist including NextJS Developer and WordPress Developer work, all as a Full Stack Developer SaaS architect 🔧 WHAT I CAN HELP YOU WITH - SAAS DEVELOPER & MVP DEVELOPER SERVICES - Discovery & Prototype: a SaaS Developer engagement that gets you a clickable prototype in 5 days - NextJS Developer ready and prepared for startup scaling - Rescue Diagnosis: a SaaS Developer review with Full Stack Developer optimization and a performance audit included - MVP & Landing Page: SaaS Developer MVP Development in 3 weeks, handling both the React Developer frontend and the Software Developer backend myself - Sprint Subscription: a long-term SaaS Developer partner, bringing Mobile App Developer and WordPress Developer support as needed ⚡ MVP SPEED - SAAS DEVELOPER & MVP DEVELOPER DELIVERY - Legal SaaS platform + AI, delivered as a SaaS Developer → 2 months - AI Receptionist with CRM, an MVP Developer Python build → shipped in weeks - B2B Dental SaaS - SaaS Developer and Web Developer NextJS delivery → 3 weeks - Medical device MVP - MVP Developer Full Stack development with Software Developer patterns → 2 weeks - Multiple SaaS Marketing web projects built with Web Developer craft, React Developer expertise, and SaaS Developer focus 💡 WHY WORK WITH ME - Product Thinking First: as a SaaS Developer I ask "should you build?" not "what to build?" - most Software Developer freelancers skip this critical step, I don't - AI Speed & Quality: as a Full Stack Developer I use Claude Code, Lovable, Cursor as an engineer - not a prompt writer. Delivers enterprise-grade solutions - I'm a Founder Too: Full Stack Developer founder mentality, deep SaaS Marketing understanding, real startup experience - Offshore + Enterprise Standard: Ukraine-based Full Stack Developer with NextJS Developer, WordPress Developer, and Mobile App Developer expertise, plus Python Full Stack Developer capability. I deliver Web Developer quality with SaaS Marketing outcomes. I cover REST API architecture as a Full Stack Developer, NextJS Developer optimization, WordPress Developer customization, and Mobile App Developer delivery. Serving 70+ SaaS Developer clients across 7 countries, 30% return to work with me again as their SaaS Developer for their next startup project. I build AI-native systems with a SaaS Marketing focus. Every SaaS Developer and Software Developer engagement I take on ships with business metrics first. As a SaaS Developer and Full Stack Developer: $400K+ Upwork | 100% Job Success - founder-led delivery. ⚙ TECH STACK - FULL STACK DEVELOPER & MVP DEVELOPER ARSENAL AI & Integration: as a Full Stack Developer I rely on Claude Code, OpenAI, FastAPI, LangChain - NextJS Developer compatible Frontend: React, TypeScript, NextJS Developer tools, Vue.js Backend: Python Full Stack Developer stack: FastAPI, Django, Node.js, GraphQL, PostgreSQL DevOps: AWS, DigitalOcean, Docker, Kubernetes Every Full Stack Developer and MVP Developer project I take on includes this complete toolkit. I work as a NextJS Developer, WordPress Developer, and Mobile App Developer specialist, alongside my Python Full Stack Developer and Software Developer skills - optimized for WordPress Developer flexibility and SaaS Marketing success from day one of your startup project.

🌟Mobile App Developer | 8+ Years Experience | 50+ Projects | 20,000+ Hours | $900K+ Earned | Upwork Top Performer | Flutter Developer I’m a Flutter developer, mobile app developer, full stack developer, and web developer with 8+ years of experience building, fixing, and scaling mobile products for startups and growing companies. My work spans mobile app development, web development, and backend-connected product work, with a strong focus on clean architecture, smooth user experience, reliable delivery, and scalable app development. I’ve worked across Flutter, Flutter Dart, Flutter Firebase, React, React Native, Xamarin developer projects, Xamarin Forms, Xamarin.Forms, .NET MAUI developer builds, Swift developer work, SwiftUI, iOS, Android, iOS developer tasks, iOS Swift, Android developer tasks, Android Kotlin, Kotlin, native app developer projects, AI app development, MVP development, API integration, and cross platform mobile app architecture. I also support teams that need a practical full stack developer who can connect mobile apps with APIs, dashboards, cloud services, and web systems without slowing the project down. That mix of mobile app development and web development lets me work across the full product, not just one part of it. On Upwork, I’ve delivered 50+ projects, earned $800K+, and worked 20,000+ hours helping clients launch MVPs, modernize old apps, fix unstable codebases, and move products into production. That experience taught me how to balance speed with quality, especially when a project needs to ship quickly but still be stable enough for real users. It also taught me how to work with different teams, different product stages, and different technical constraints without losing momentum. For new products, I help with MVP development from concept to launch. For existing products, I step in to improve architecture, refactor weak areas, and make the app easier to maintain and scale. If you’re building a cross platform mobile app, I can help choose the right direction between Flutter, React Native, .NET MAUI, Xamarin migration, or native app development depending on the product goals, timeline, and long-term plan. I focus on making those choices practical, not trendy, so the app can grow without becoming harder to manage. I’m also a strong fit for AI app development projects where the product needs more than a basic interface. That might mean smart workflows, automated actions, backend logic, or API integration that connects the app to real business systems. In those projects, I pay close attention to stability, data flow, security, and the user experience, because a useful feature only matters if it works reliably in production. 💡 Areas I specialize in - SaaS and startup MVP development - from idea to production-ready MVP. - Cross platform mobile app architecture - Flutter, React Native, and .NET MAUI. - App modernization and legacy migration - Xamarin to .NET MAUI, Flutter, or React Native. - API integration and backend connectivity - for apps that need stable data flow and real-time features. - AI app development and product automation - for teams that want smarter app experiences. - Continuous delivery, refactoring, and codebase optimization - to keep existing products moving forward. - Mobile app development for iOS and Android - with a focus on stability, performance, and usability. - Full stack developer support - when mobile work needs web, API, or backend coordination. - Native app developer support - when the project needs platform-specific quality and performance. - React Native developer support - for teams already working in JavaScript-based mobile stacks. - Swift developer and iOS developer support - for polished Apple ecosystem apps. - Android developer support with Kotlin - for strong native Android performance. - Flutter developer support - for fast cross platform mobile app delivery. - Xamarin developer support - for legacy apps that need modernization or migration. - .NET MAUI developer support - for teams moving toward a modern Microsoft stack. - Cross platform mobile app delivery - when one codebase needs to support iOS and Android efficiently. I’m a good fit when you need a mobile developer who can think beyond screens and help shape the full product. Whether the goal is a fresh MVP, a native app for iOS or native Android or a cross platform mobile app that can grow over time, I focus on code quality, maintainability, and practical results. I also make sure the work stays aligned with product goals, so the app is not just built well, but built in a way that supports growth and future updates. 🚀 If you need a Flutter developer, React Native developer, Xamarin developer, .NET MAUI developer, Swift developer, iOS developer, Android developer, Kotlin developer, mobile app developer, web developer, MVP developer, API integration expert or full stack developer who can bring structure to a build and get it shipped - message or invite me and let's start today!

🦾 AI-powered solutions. OpenAI integrations. Machine learning capabilities. Business automation. I’m an AI Developer and Open AI developer with 13+ years of experience in SaaS products, automation systems, backend platforms, and business tools. My work combines practical AI Integration, scalable architecture, Python developer expertise, JavaScript, and strong product thinking. As an AI Developer, I help clients build internal tools, dashboards, chatbots, AI Langchain workflows, data platforms, web applications, and automation systems. I also work as a Python Django developer when projects need secure APIs, admin panels, user roles, CRM connections, database logic, and stable backend architecture. My stack includes Python, Django, React, JavaScript, REST APIs, PostgreSQL, Docker, OpenAI, Claude, LangChain, vector databases, Zapier, Airtable, n8n, make com, Slack, Google Workspace, and third-party API connections. 💼 Why Work With Me? I don’t just write code — I build systems that solve real business problems. As an AI Developer and Agentic AI Developer, I focus on clean workflows, reliable outputs, automation logic, and product usability. For AI Integration, I connect models with your real data, users, tools, and business processes. This includes AI API Integration, Airtable Integration, chatbots, copilots, document processing, customer support automation, reporting systems, knowledge bases, and smart assistants connected to CRMs, databases, files, and APIs. As a Python developer, I build scalable backend systems with clear structure, secure permissions, optimized databases, background jobs, and clean admin logic. I also support Python developer web scraping, data processing, automation scripts, API integrations, reporting workflows, and ML-related pipelines. On the frontend side, I use JavaScript to build dashboards, admin portals, SaaS interfaces, internal tools, analytics screens, and API-driven product flows that are simple for real users. 💻 Development Expertise AI Developer services: smart assistants, workflow agents, SaaS tools, AI Developer zapier workflows, document analysis, recommendation logic, and business copilots. AI Integration Specialist work: OpenAI, Claude, vector search, Airtable, CRMs, internal databases, n8n, make com, Slack, Stripe, and custom APIs. Python developer work: backend logic, automation, data pipelines, scraping, reporting, API services, background workers, integrations, and analytics. Python Django developer work: SaaS backends, admin panels, authentication, permissions, dashboards, REST APIs, PostgreSQL, Celery, Redis, and secure architecture. JavaScript: React interfaces, dynamic web apps, dashboards, interactive workflows, API-driven screens, and modern frontend development. Machine Learning: NLP, LLM workflows, predictive analytics, AI Machine Learning features, recommendations, classification logic, and business intelligence. 🧠 Use Cases I Can Build AI Developer Langchain projects for SaaS startups, agencies, internal teams, marketplaces, fintech, real estate, operations, and e-commerce. AI Integration for customer support, sales, operations, research, reporting, content workflows, document automation, and internal knowledge systems. Python developer geospatial solutions, Python Full stack platforms, Python AI developer tools, data scientist workflows, web scraping systems, and API Integration pipelines. Full stack developer support for web developer tasks, backend architecture, frontend delivery, automation, dashboards, and production-ready product development. 🔧 How I Approach Projects First, I clarify your goals, process, users, data, integrations, and business priorities. Then I design a practical architecture and build step by step, with attention to reliability, security, performance, and future scaling. For AI Integration, I focus on prompt quality, context structure, data sources, fallback logic, logging, testing, and human review. A strong AI Integration is not just a model call; it is a complete workflow that fits your business. I can also join projects at different stages: early MVP planning, rebuilding legacy workflows, improving existing AI tools, or scaling a working platform. My focus is always on practical delivery, clear communication, clean code, and measurable business value. I’m comfortable working with founders, agencies, product teams, and non-technical clients who need a reliable technical partner, not just a coder. I can help define the MVP scope, choose the right stack, estimate the effort, and then build the product step by step with demos, feedback loops, and stable deployment. If you need a reliable AI Developer who can combine AI Integration, Python developer expertise, JavaScript, Machine Learning, web developer experience, and full-cycle delivery, I can help you build and launch a product that works.

I provide long-running Full Stack Developer services covering SaaS, CRM, marketplaces and admin tools - 200+ Full Stack Developer, Front End Developer and Backend Developer projects shipped over 20+ years, 7,000+ hours tracked. Why hire my Full Stack Developer (s): - a 100% Job Success Score, Top Rated Plus Full Stack Developer track record - long-term Full Stack Developer clients staying 3 - 10+ years - Full Stack Developer, Front End Developer and Backend Developer work in one pair of hands, no vendor handoffs My Full Stack Developer focus is CRM, ERP, admin systems and B2B platforms with RBAC, audit trails and Stripe billing - Full Stack Developer builds serving 5 - 10M monthly users with databases holding 100M+ user records. Clients come to a Full Stack Developer instead of splitting a project between a Front End Developer shop and a Backend Developer contractor, so QA and deployment stay inside one Full Stack Developer workflow. The Full Stack Developer stack is React, Next.js, Vue, PHP, Node.js, MySQL and Redis, on AWS, GCP and Heroku infrastructure sized for peak loads up to 100K users per second. Adjacent Full Stack Developer tracks: Full Stack Web Developer rebuilds, Python Full Stack Developer pairings for data work, Full Stack Developer AI on a codebase already in production, and Full Stack Developer React funnels. My Front End Developer track is where a product stops looking like an internal tool - dashboards, admin panels, multi-tenant SaaS consoles and marketing funnels, with pages rendering in under 2 seconds. A Front End Developer React build is the default in a Full Stack Developer engagement: React with Next.js, Tailwind and Redux, plus Front End Developer Next.js server rendering when SEO carries the traffic. My Front End Developer also ships Vue 3 with Pinia when a project already runs a PHP backend. Clients searching for a Front End Web Developer or a React Developer want one Front End Developer who owns component architecture, state and API contracts instead of styling someone else's markup. Demand for Front End Developer AI work grows every quarter, with streaming responses, chat surfaces and agent panels wired into an app that already has users. My Backend Developer work carries the load underneath - REST and GraphQL APIs, queues, background jobs, reporting and integrations. A Node.js Backend Developer service is the usual answer when real-time traffic or webhook throughput matters, and a Backend Developer Nest.js structure keeps a growing API navigable. On the PHP side the same Backend Developer covers Laravel and custom PHP with MySQL, Redis and OpenSearch. Where a client wants a JavaScript backend end to end, backend NodeJS services sit behind the same Next.js frontend, and a Python Developer joins for data pipelines and AI. My Backend Developer also inherits legacy systems: a WordPress Developer migration out of Gutenberg into a custom platform, an API that has to keep answering while it gets replaced. Clients search by role, and the same engineers field all of them - a Full Stack Developer, a Backend Developer or a Software Developer on the server side, a Front End Developer, React Developer or Vue.js Developer on the client side, and PHP Developer, CRM Developer or ERP Developer profiles. When a build needs a Mobile App Developer alongside the web product, my engineers ship the app on the same API. As COO I oversee every Full Stack Developer engagement - I stay close to the discovery, match the right Full Stack Developer engineers and own the commercial side. My Front End Developer and Backend Developer engineers own the code. Clients hire me for Full Stack Developer work when they need: - a Full Stack Developer who owns frontend, backend, infrastructure and deployment - a Front End Developer for a dashboard, console or funnel that has to feel fast - a Backend Developer for APIs, integrations and reporting that stay predictable under load Recent Full Stack Developer work I shipped: - Built a Full Stack Developer identity-verification SaaS on a PHP API with Node.js real-time on MySQL and Redis - 4K+ DAU, 1M+ checks through a public Developer API. - Scaled a multi-currency voting SaaS to 2M+ users across 10 countries with vote locking and Stripe payouts, $2.5M+ revenue. - Grew a B2B luxury asset marketplace with 15 engineers - React, Next.js, PostgreSQL, OpenSearch, Stripe - to 26K MAU, 75% MoM growth, 25% engagement. - Shipped a creator-monetization SaaS with Stripe Connect, Twilio and Mailgun - 0% fee on donations, 9% only on marketplace sales. - Delivered a Full Stack Developer medical-center ERP with registration, cashier, doctor and lab modules for 60 concurrent staff and 500 patients a day. - Rebuilt a CRM for a photography business - legacy WordPress and Gutenberg ripped out, briefs and asset pipelines re-routed into a custom platform. Need a Full Stack Developer who covers the Front End Developer and Backend Developer sides and stays long-term - let's talk.

Hello, I am Oleksandr! 🔥I build AI-integrated SaaS and mobile apps for fintech, travel & hospitality, real estate and healthcare startups and established businesses. Using React Native, Python, and React, I deliver secure MVPs from concept to launch. Backed by a 65+ dev team, I ensure scalable, compliant solutions with predictable delivery and rapid iteration.🔥 🚀 I also lead a web development team, Join.To.IT from Kyiv, Ukraine, as co-founder and CEO. We have multiple Laravel developers (Senior PHP and Custom PHP MySQL), Python (Django), and JavaScript (React, Vue, React Native) developers. If your project needs a dedicated mobile app developer, we can staff that role quickly, while I stay involved as a full stack developer to keep architecture, delivery, and communication aligned. When the UI scope grows, a senior web developer can join the project while I remain the full stack developer responsible for end-to-end quality.🚀 I’m an experienced Laravel engineer, React engineer, Vue engineer, and React Native engineer with 14 years of production experience. As a full stack developer I can build backend APIs, admin panels, dashboards, and customer-facing apps, and as a web developer I pay attention to UI details that improve conversion and retention. I’ve completed a wide range of successful projects, from MVPs to large systems with long-term maintenance and continuous improvements. My skills: React React Native Software Architecture & Design Laravel Python Full-Stack Development API Development JavaScript PHP Web Application Development Node.js AWS Development MySQL Mobile App Development Django WordPress HTML5 Tailwind CSS Web Design API Integration Stack of technologies we use: ✅ HTML/CSS, Bootstrap, Tailwind ✅ JavaScript (React, Vue, Node.js, Express, AdonisJS, Nuxt) ✅ React Native for cross-platform mobile delivery ✅ API integrations (Stripe, PayPal, Twilio, TextMagic, Xero, DocuSign, Google Maps, Meta APIs, and more) ✅ API development (Laravel, Node/Express, Firebase, Python/Django, Go, REST, GraphQL) ✅ PWA (Progressive Web App) ✅ Databases: MySQL, PostgreSQL, MongoDB, DynamoDB, Elasticsearch ✅ Infrastructure: AWS, DigitalOcean, Firebase, Supabase ✅ DevOps and administration: LAMP, CentOS, Ubuntu As a full stack developer, I connect the front end, back end, and infrastructure so releases are smooth. When the scope includes native-like UX, I can collaborate with a mobile app developer without slowing down the API roadmap, and a web developer can refine UI flows while we keep the backend stable. You can hire me as a full stack developer for full ownership, or extend the team and keep me as the full stack developer leading architecture and delivery. If timelines are tight, add a mobile app developer to parallelize mobile features, and add a web developer to accelerate dashboards and front-end work. Our team has already worked in such industries as: ✅ Marketplace ✅ E-commerce ✅ Travel and Hospitality ✅ Custom ERP (Enterprise Resource Planning) ✅ ChatGPT integration (LLM model in your website front end) ✅ Automotive (car inspection, automotive ERP, car sharing, rental, selling) ✅ Social media (Tinder-like networks, short video platforms, communities) ✅ Sales (CRM systems for sales teams, retail, hospitals, sales departments) ✅ Sport (gym management systems, trainer platforms, fitness apps, club portals) ✅ Legal (document automation, AI-assisted legal processing) ✅ Healthcare (clinic management, booking, mental health software) ✅ Education (LMS, automated training, coaching marketplaces) ✅ Finance (fintech platforms, investment platforms, bank API integrations, calculators) ✅ Manufacturing (shop floor management and automation) ✅ Human resources (HRM systems) ✅ Digital marketing (Meta, Facebook/Instagram, TikTok, Google APIs, analytics) In our work history you’ll find successful products built with Laravel, PHP, JavaScript, MySQL, React, Vue, WordPress development, Web Development, Full Stack development and React Native, plus multiple systems built with Python (Django, Flask, FastAPI). I also use LLM capabilities and AI APIs (including OpenAI integrations) when they genuinely improve the product experience. We have 65 senior developers across PHP, JavaScript, MySQL, Python, Go, and Node.js. As a full stack developer, I can jump into an existing codebase, stabilize releases, fix bottlenecks, and plan the next iterations. Don't hesitate to get in touch with me for further details and fruitful work. Best regards, Oleksandr CEO, JoinToIT

✅Let's start with a quick consultation or a small initial milestone so you can see I'm the right fit. 🔥PROVEN BUSINESS IMPACT - 10+ Years of engineering and building enterprise-grade applications as a .NET developer in high-stakes environments. - ROI-Driven Development: $2.5M+ in verified client impact, leveraging my background as a full stack developer to increase revenue and reduce operational overhead through expert software development. - Performance Engineering: 90% faster data processing and 75% lower infrastructure costs achieved through advanced Microservices and optimization as a senior .NET developer proficient in ASP.NET Core. - Scalability & Growth: Scaled platforms to 30,000+ active users; consistently cut time-to-market for MVPs by 4–6 weeks by applying the expertise of a seasoned full stack developer. - Legacy Modernization: Proven track record as a .NET developer migrating legacy systems - including .NET Framework and .NET Compact Framework - to modern architectures, resulting in 40% fewer bugs. - Efficiency Gains: Reduced admin friction by 45% through custom-built automation, demonstrating the value a dedicated full-stack developer brings to complex SQL-driven workflows. 👨🏻‍💻THE PARTNERSHIP EXPERIENCE - Full-Stack Authority: Microsoft-certified expertise spanning the entire development lifecycle, from robust C# backend architecture to dynamic frontend interfaces. - Versatile Tech Lead: Whether you need a full stack developer for MVP creation, a .NET developer for enterprise scale, or a java developer for backend migration, I bridge the gap between technical requirements and business goals. I also offer the flexibility of a java developer for interoperability, and the analytical power of a python developer for data-heavy tasks. - Agile & Transparent: High-velocity delivery using JIRA/Asana, providing the clear, consistent communication expected from a senior full-stack developer. ⚙️ ENGINEERING CAPABILITIES - Backend Architecture: Building high-throughput systems with C#, ASP.NET Core, and ASP.NET Web API. I also offer the flexibility of a java developer to integrate with diverse existing ecosystems. - Modern Frontend: Crafting dynamic UI/UX using Angular, React, and JavaScript. My deep experience with HTML5, CSS 3, and Bootstrap ensures highly responsive, mobile-first designs. - Cloud & Infrastructure: End-to-end management of cloud-native ecosystems (Azure/AWS) and containerized deployment pipelines as a lead .NET developer. - Data & Performance: Advanced database design using Microsoft SQL Server and complex SQL queries to cut data latencies by up to 50%. - Cross-Functional Skills: I bring the architectural discipline of a .NET developer - including ASP.NET MVC and ASP.NET expertise - to every project, while also offering the modern tooling mindset of a full stack developer using Node.js. 🏆 DOMAIN SPECIALTIES - FinTech: Secure ledger systems and transaction management built by a specialized .NET developer. - Healthcare: HIPAA-compliant patient management portals and telehealth solutions. - LegalTech/Enterprise: Complex document workflows and granular RBAC. ⚒️ TECHNICAL TOOLSET - The .NET Stack: .NET Framework, .NET Compact Framework, ASP.NET Core, ASP.NET Web API, ASP.NET MVC, ASP.NET, C#. - Frontend Mastery: Angular, React, JavaScript, HTML5, CSS 3, Bootstrap, jQuery. - Data Layer: Microsoft SQL Server, SQL, Redis, MongoDB, ElasticSearch. - General Stack: Node.js, Python, Docker, CI/CD. - Engineering Standard: Clean Architecture, SOLID Principles, and an uncompromising focus on software development quality. 📩If you’re looking for a reliable and experienced .NET Developer and full stack development partner who understands both technology and business impact, I’d be happy to connect - feel free to invite me for an interview!

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

🏆 Why I'm a Top-Rated Full Stack Developer & .NET Developer 8+ years as a Full Stack Developer and .NET Developer, 60+ web apps shipped for US, UK and EU clients
 I’ve earned +$60K on Upwork as a C# Developer and .NET Developer, 100% Job Success Score
As a Full Stack Developer, I've shipped 40+ releases combining React, Angular and ASP.NET Core
As a C# Developer, I cut API response times by 45% and infrastructure costs by 30% for a fintech client
As a .NET Developer, I migrated 3 legacy monoliths to .NET Core microservices, +70% deployment speed 💥 Recent win — as a Full Stack Developer and C# Developer, I rebuilt a logistics platform using .NET Core, Angular and MySQL, cutting order processing time by 55% and lifting client retention by 22%. 🟢 Most business platforms are slow, hard to scale and expensive to maintain. With 8+ years as a .NET Developer, C# Developer and Full Stack Developer, I architect scalable web developer solutions on .NET, Angular, React and Python stacks that turn technical debt into growth 🟢 📩 Send me your project brief — I'll reply with a free technical review within a few hours, covering architecture, performance and security. ⭐️⭐️⭐️⭐️⭐️ "She's an outstanding .NET Developer and Full Stack Developer. Reliable, communicative, and delivers clean, production-ready C# code every time." 🎯 WHY CLIENTS CHOOSE ME AS A FULL STACK DEVELOPER I'm a Full Stack Developer, .NET Developer and C# Developer with full-cycle ownership — from database architecture and API design to pixel-perfect frontends. As a C# Developer, I write clean, testable code following SOLID principles, and as a Full Stack Developer I make sure the entire product, not just one layer, actually works for your users. ✔️ .NET Core & C# — as a .NET Developer and C# Developer: scalable ASP.NET Core APIs, background services, .NET MAUI apps
✔️ Frontend — React, Angular, Vue.js, jQuery, built for speed and clean UX
✔️ Full Stack Development — as a Full Stack Developer, connecting .NET, Node.js and Python backends to JavaScript frontends
✔️ Web Developer Services — as a web developer, WordPress, Laravel and PHP sites alongside custom .NET apps
✔️ Database Architecture — MySQL, SQL Server, API Integration for data-heavy systems
✔️ Cloud & DevOps — Azure, AWS, Docker, CI/CD, supporting .net full stack developer and full stack developer react deployments 📊 RESULTS THAT SPEAK 🔶 Fintech Platform: as a .NET Developer and C# Developer, -60% transaction errors, 99.9% uptime via a full .NET Core rebuild
🔶 E-commerce Marketplace: as a Full Stack Developer, React + .NET Core APIs, +28% checkout conversion, 3x page load speed
🔶 Healthcare SaaS: as a senior .net developer, HIPAA-compliant rebuild, -40% manual admin work ⚙️ TECH STACK — WHAT I ACTUALLY BUILD ✔️ As a C# Developer, I build backend services and APIs in C#, .NET and .NET Core
✔️ As a .NET Developer, I build enterprise systems on .NET Framework, deploy cross-platform apps with .NET MAUI, and ship RESTful APIs with ASP.NET
✔️ As a Full Stack Developer, I build frontend interfaces in React, Angular, Vue.js and JavaScript, and add type safety with TypeScript
✔️ As a Full Stack Developer, I build backend logic in Node.js and Python, and CMS-driven sites in PHP, Laravel and WordPress
✔️ As a web developer, I build responsive layouts with HTML5, CSS 3, Bootstrap and jQuery
✔️ As a Full Stack Developer, I build and manage data layers in MySQL and SQL Server 💼 EVERY PROJECT AS A FULL STACK DEVELOPER INCLUDES ▪️ Clean, well-documented C# and .NET code with automated testing
▪️ Direct communication, just a senior C# Developer / .NET Developer working on your project
▪️ Ongoing support after launch as your long-term Full Stack Developer and .NET Developer partner 🏭 INDUSTRIES Fintech · Healthcare · E-commerce · Logistics · SaaS · Real Estate · EdTech 🔎 ALSO EXPERIENCED AS — EVERY ROLE, PROVEN TWICE ✔️ As a react developer, I build interactive dashboards for SaaS platforms. As a react developer, I also rebuild legacy UIs for speed and scale.
✔️ As a python developer, I build backend APIs and automation scripts. As a python developer, I also ship data-processing pipelines for reporting tools.
✔️ As a java developer, I build backend modules for enterprise systems. As a java developer, I also debug and refactor legacy Java codebases.
✔️ As a blockchain developer, I build and audit smart contracts. As a blockchain developer, I also integrate wallet and token logic into existing platforms.
✔️ As a mobile app developer, I build cross-platform releases for iOS and Android. As a mobile app developer, I also ship post-launch updates and bug fixes.
deployment pipelines.
 🚀 LOOKING FOR A RELIABLE FULL STACK DEVELOPER OR .NET DEVELOPER? 👉 Share your project details and I'll reply with a clear technical plan. Hire a proven .NET Developer, C# Developer and Full Stack Developer who ships secure, scalable, production-ready software — on time, every time. 📅 Last updated: 07.08.2026