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Most developers will build what you ask for. I help you build what actually works. I’m a mobile app developer with 10+ years in IT and a small team behind me. We help startups go from idea → MVP → scalable product - not just code. At the same time, I’m building my own SaaS product, so I understand the full journey: validation, MVP, users, retention, monetization. 🚀 How I can help you - Turn your idea into a clear MVP plan - Build fast using FlutterFlow + Flutter - Avoid overbuilding and wasted budget - Design product logic, not just screens - Prepare your app for real users & growth 👉 Already have everything defined? We can jump straight into development and deliver efficiently. 🎨 Design support - UX/UI design from scratch - Improving existing designs - Product-focused user flows (not just visuals) 📱 What I do - MVP development (fast & lean) - FlutterFlow development - Flutter app development - Full-cycle product development - Firebase / Supabase backend - Subscriptions (RevenueCat, Stripe) ⚡ Why clients choose me Because I don’t think like a freelancer. I think like a product partner: - I challenge weak ideas - I simplify scope to launch faster - I focus on what brings real value ⚠️ Not a good fit if: - You’re looking for the cheapest option only - You want someone to blindly follow tasks ✅ Perfect fit if: - You’re building a startup or MVP - You want to move fast and build it right - You need someone to think with you, not just code 💬 Send me your idea, Figma, or even a rough concept - I’ll break it down and suggest the best way to build your MVP.

Helping startups and growing companies launch polished, scalable products - fast. ⚡️𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐭𝐡𝐚𝐭 𝐈 𝐨𝐟𝐟𝐞𝐫 𝗦𝗮𝗮𝗦 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 As a Full Stack Developer, I build complete SaaS platforms, not just features. I handle user authentication, subscription billing with Stripe, admin dashboards, usage tracking, multi-tenant architecture, and role-based access control - building clean systems that scale with your user base. 𝗙𝘂𝗹𝗹-𝗖𝘆𝗰𝗹𝗲 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 As a Full Stack Developer and Mobile Developer, I handle the entire lifecycle of your React Native, React, or Next.js project from the first prototype to post-launch updates. I make sure the product stays stable, secure, and user-friendly across all web and mobile platforms. 𝗠𝗩𝗣 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 As a Full Stack Developer, I help startups ship fast but solid. I’ve launched multiple MVPs from scratch that helped founders validate their ideas, pitch investors, and scale on top of clean architecture, quick iterations, and strong technical foundations. 𝗠𝗼𝗯𝗶𝗹𝗲 & 𝗪𝗲𝗯 𝗨𝗜 𝗜𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻 As a Mobile Developer and Full Stack Developer, I deliver pixel-perfect Figma-to-code implementation. I build sharp, responsive UIs with smooth animations and clean interactions, maintaining a strict mobile-first engineering approach. 𝗪𝗲𝗯𝘀𝗶𝘁𝗲𝘀 & 𝗟𝗮𝗻𝗱𝗶𝗻𝗴 𝗣𝗮𝗴𝗲𝘀 As a Full Stack Developer, I build high-converting landing pages, marketing websites, Shopify storefronts, and custom company pages. Using React, Next.js, Tailwind CSS, or simple static stacks, I deliver SEO-optimized, blazing-fast, and easy-to-manage web properties. 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 & 𝗔𝗣𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 As a Full Stack Developer, I engineer solid, scalable backends built with Node.js, NestJS, or Express, backed by PostgreSQL or MongoDB databases. I design clean REST/GraphQL APIs, implement robust authentication, and integrate third-party services like Stripe, Firebase, and OpenAI. 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 As a Full Stack Developer, I integrate OpenAI and other LLM APIs into real production products, not just demos. I build practical AI features, custom chatbots, smart recommendation engines, prompt engineering workflows, and RAG pipelines. 𝗢𝗻𝗴𝗼𝗶𝗻𝗴 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 & 𝗠𝗮𝗶𝗻𝘁𝗲𝗻𝗮𝗻𝗰𝗲 As a Full Stack Developer, I stick around after launch to fix bugs, optimize performance, and scale your product as your business requirements evolve and user base grows. 🌟 𝐂𝐥𝐢𝐞𝐧𝐭 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐭𝐨𝐫𝐢𝐞𝐬: Denys is a great contractor - very capable and eager to get the job done properly. He communicates well and is knowledgeable - ⭐⭐⭐⭐⭐ I can honestly recommend Denys as developer and the most responsible, proactive freelancer I’ve ever met. Quick answers and responses, step by step demo calls, fair price, strong skillset, fluent English - ⭐⭐⭐⭐⭐ Denys is an absolutely phenomenal engineer. I say this as someone who worked with him project to project over many years as a supervisor and then eventually a co-worker. Hands down the best Upwork hire I've had!!! - ⭐⭐⭐⭐⭐ 𝗪𝗵𝘆 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗺𝗲? I own projects - not just code tasks. I think like a founder - not just a dev. I deliver fast, communicate clearly, and stick to timelines. I’m in this for the long term, not one-off jobs. 📩 Send me a message or invite - happy to jump on a quick call and see if I'm a good fit for your project. SaaS Development, SaaS Product Development, B2B SaaS, B2C SaaS, Subscription Platform Development, Multi-Tenant Architecture, MVP Development, Startup Development, Rapid Prototyping, Product-Market Fit, Full-Cycle Software Development, End-to-End App Development, Mobile App Development, iOS App Development, Android App Development, React Native App Development, Flutter App Development, Cross-Platform App Development, Hybrid App Development, Mobile App Design, Mobile App UX/UI Design, App Performance Optimization, App Scalability, Web Development, React, Next.js, Tailwind CSS, Landing Page Development, Shopify Development, SEO Optimization, Backend Development, Node.js, Nest.js, Express.js, RESTful API, GraphQL API, PostgreSQL, MongoDB, Database Design, API Integration, Third-Party Integrations, Authentication & Authorization, Role-Based Access Control, Stripe Integration, Payment Integration, Subscription Billing, Firebase Integration, Firebase Cloud Firestore, Firebase Cloud Messaging, Push Notifications, AWS, AWS Mobile Services, Cloud Architecture, Serverless Architecture, AI Integration, OpenAI API, LLM Integration, Prompt Engineering, Conversational AI, Chatbot Development, Recommendation Systems, RAG (Retrieval-Augmented Generation), TypeScript, JavaScript, Feature Integration, App Maintenance, Ongoing Support, Bug Fixing, Software Development Life Cycle, Agile Development, Git, GitHub, CI/CD Updated August 2026

I build and rescue software where weak engineering gets expensive. ⭐ 10+ years delivering software for billion-dollar enterprises ⭐ Enterprise delivery for PPG & Thomson Reuters / engineering experience from JPMorgan, Google, Nike, Uber & Bank of America ⭐ Make Certified Partner + Zapier Solutions Partner ⭐ 12,000+ websites optimized in one production ecosystem ⭐ 16,000+ orders processed through a platform we delivered ⭐ 20× API performance improvement on a live franchise platform ⭐ 92% client return rate - our first client is still our client today And one rule: no junior handoff. We’ve spent years inside enterprise environments where “we’ll clean it up later” becomes a six-figure problem. That changes how we build. I’m Ihar, founder of Salamander Prime Solutions. When you hire me, you get one accountable senior engineer with our senior EU engineering core behind the delivery. The engineer you meet is the engineer who does the work. Backend, QA, DevOps, automation and delivery support come in when the project needs them. That is how we work. No junior bench. No anonymous handoff. No client poaching. What we are strongest at: ✓ Backend & APIs - business logic, auth, databases, caching, integrations, production fixes ✓ Automation & orchestration - Make, Zapier, webhooks, CRM workflows, reconciliation, retries, state handling ✓ Operational platforms - portals, order systems, approvals, internal tools, transaction-heavy workflows ✓ Data & CRM - pipelines, Salesforce, attribution, identity resolution, reporting, source-of-truth problems ✓ Web platforms - WordPress, WooCommerce, performance, checkout, integrations, migrations ✓ Legacy recovery - slow APIs, fragile integrations, poor visibility, systems nobody wants to touch anymore ✓ AI-assisted SDLC - Claude Code, Cursor, ChatGPT and agentic workflows across analysis, implementation, QA and documentation We care about ownership, observability, edge cases, handover and what happens after release - because production is where software starts proving whether it was engineered properly. Why clients bring us in: 🌍 Senior European engineering team 🧠 Senior engineers stay hands-on from first call to release ⚙️ Make Certified Partner + Zapier Solutions Partner 🔒 White-label friendly. No client poaching. 📋 Investigation, coordination and QA included on the first task 🏢 Enterprise delivery discipline without enterprise-vendor overhead You can hire another freelancer. Or you can put a senior engineering core behind the problem. If the work is fragile, stuck, integration-heavy, or simply too important to get wrong - send me the problem! We’ll tell you quickly whether we should own it.

I'm a professional UK based Magento 2 certificated developer. I cooperate with eCommerce businesses helping them with integration with other services like Linnworks or M2Epro. Build responsive stores mostly based on Magento 2. SEO specialist and web developer with excellent knowledge of Magento, Shopify Plus. I'm good in applying security patches and monitoring stores for security risks. Fix any issue that can affect your e-store or website. I also have excellent knowledge of linux and can easily setup cloud servers. Working on Linux and Mac machines. Extra skills: AWS DevOps Terraform Blackfire Valet Plus Docker Composer Adobe XD Graphic design - usually Gimp and Zeplin SEO

I engineer AI-driven business automation, custom SaaS platforms, and enterprise-grade Shopify solutions designed to eliminate manual workflows and slash operational overhead. Over the past 8+ years, I have built 100+ custom Shopify stores, themes, and apps. My focus is bridging the gap between artificial intelligence, custom software architecture, and e-commerce, transforming traditional business operations into autonomous, high-growth engines. I replace complexity and repetitive manual labor with intelligent, scalable infrastructure. Clients usually hire me for three things: AI Automation & Business Optimization Designing and integrating custom AI systems to handle data processing, asset generation, and operational tasks Replacing manual bottlenecks with intelligent workflows and custom AI agents tailored to specific business logic Embedding smart automation into backend management to completely remove human friction from day-to-day operations SaaS & Custom App Development Developing robust standalone SaaS products and custom applications from scratch Building public and private Shopify apps with custom business logic and deep API integrations Architecting external infrastructure that syncs seamlessly with core platforms via high-performance web architectures Advanced Shopify Plus Engineering Developing high-performance custom themes and storefronts built from scratch for maximum speed Engineering complex cart, checkout, and custom subscription contract flows using the GraphQL Admin API Replacing bloated third-party app dependencies with clean, native infrastructure and scalable architecture I approach every project as a product architect. Whether you need to launch a new SaaS platform, embed intelligent AI automation into your workflows, or engineer a high-converting enterprise store, I build systems that scale. If you are looking to eliminate manual bottlenecks, optimize your operations, and build autonomous technical infrastructure, let us build something that performs.

I remember deadlines better than birthdays... My family would probably prefer it the other way around.😅 🤖 AI-Driven Mobile Engineer Building Apps That Scale Beyond MVP ⚡ AI-Assisted Engineering for Faster Delivery & Higher Product Quality 👉 WHAT YOU GET ✔️ Full Stack Mobile Developer - 22+ years experience, 2000+ builds, $700K+ client impact, end-to-end development ownership. ✔️ React Native Mobile App & Flutter Developer - 100+ interfaces, 18–27% user engagement lift, clarity and ultimate trust. ✔️ Mobile Application Developer - 30–40% faster launch cycles, cleaner UI/UX, stronger user retention across SaaS Mobile App ecosystems. 👉 ACHIEVEMENTS ✔️ 22+ years, 40,000+ hours, 2000+ products delivered as a full stack mobile developer, mobile app developer, and senior full stack developer ai and mobile application developer workflows. ✔️ $700K+ client impact, $900K+ direct revenue, 200+ successful MVPs, £11M annual business volume generated as a top-performing mobile app development expert. ✔️ 100,000+ active users where a custom react native mobile app developer execution lifted repeat engagement by 27% on a popular festival companion app. ✔️ 10,000+ users in Healthcare Platform and HIPAA-compliant systems where mobile application developer architecture cut clinical data friction by 40% using an intuitive doctor directory website interface. ✔️ 2,423 completed mobile orders, 34% faster handling in E-commerce Marketplace App and Fintech Platform deployments as a full stack developer. ✔️ 90% faster background sync, 80% lower crash workload, 65% fewer endpoint errors through API Integration, automated Stripe integration, and Flutter developer performance fixes. ✔️ 5–8 weeks shorter Startup MVP to Pilot Launch, 35% fewer critical production bugs through legacy code refactoring and clean continuous development pipelines. 👉 WHERE I DELIVER ✔️ As a mobile app developer - 200+ systems with pixel-perfect mobile app design, automated push notifications, and UI/UX design and development across SaaS Mobile App and Enterprise Mobile App architectures. ✔️ As an experienced mobile app developer - 15+ years of cross-platform engineering, delivering 30–40% faster iteration cycles for teams that need both iOS and Android apps from scratch. ✔️ As a full stack developer - 50+ end-to-end mobile + web platform setups with secure Node.js backend architecture, REST API deployment, and database scaling from Early-Stage MVP to live production. ✔️ As a react native mobile app specialist - building responsive mobile app react native mobile components for cross-platform app deployment, ensuring native-like feel across both iOS and Android. ✔️ As an AI App developer & AI Developer - leveraging cutting-edge ai platform development, ai development, and ai mobile development to build smart assistants, audio transcription apps, and image/vision processing products. ✔️ As a backend developer and javascript developer - writing highly maintainable server code in Node.js, Express, NestJS, and PHP (Laravel) with robust database integration via MongoDB, PostgreSQL, and Firebase/Supabase. ✔️ As a full stack mobile developer - driving ongoing support and maintenance, optimizing systems to fix bugs and improve performance with a dedicated team mindset. 👉 INDUSTRY IMPACT ✔️ Marketplace App & E-commerce - thousands of item listings, 20%+ higher checkout conversion as a mobile application developer and full stack developer. ✔️ Healthcare Platform & Telehealth - clinic workflows, 25%+ better data processing security as a senior mobile app developer. ✔️ AI Mobile App & AI Platform Development - OpenAI & Claude API smart integrations, automated recommendations, and custom conversational interfaces as an AI App developer. ✔️ Fintech Platform & SaaS Mobile App - secure in-app purchases, mobile subscriptions, multi-role access control, and seamless Stripe payment integrations. ✔️ Enterprise Mobile App & Workflow Automation - customized real-time chat, location-tracking (GPS/Google Maps), and mobile app + admin panel management tools. 👉 HOW I BUILD ✔️ 22+ years as a mobile app developer: built with cross-platform and native ecosystems using Swift, Kotlin, Java, Flutter, React Native, and native app infrastructure optimized for smartphone form factors. ✔️ 15+ systems as a full stack developer: powered by Node.js, Express, NestJS, PHP (Laravel), TypeScript, REST API protocols, GraphQL, Firebase, Supabase, Firestore, PostgreSQL, and MongoDB. ✔️ 40+ products engineered with a dedicated team mindset: utilizing clean Git version control, secure AWS cloud envicloud environments, Docker containers, and rigorous usability testing to publish app to App Store and Google Play smoothly. Looking for an elite Senior Mobile & Full Stack Developer who can build an app from scratch, create a mobile application with premium UX, or handle complex product development for long-term collaboration? Let's connect! Send an invite and let’s talk about your project goals. ☎️