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Nikita S.
$35/hr
100% Job Success
$200K+ earned
Available now
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From fitness apps featured by Apple to AI-powered platforms with 20K+ users, I build high-performance mobile apps that feel great, scale smoothly, and deliver real business impact. As a Senior Mobile App Developer with 10+ years of experience, I combine deep engineering expertise with strong product thinking to help founders launch faster and grow confidently. I’m a Mobile App Developer specializing in iOS mobile app and Android mobile app development, working with Swift, Kotlin, and Flutter to build production-ready solutions with clean architecture, smooth UX, and long-term maintainability. As a hands-on Flutter Developer, Swift Developer, and Kotlin Developer, I create cross-platform and native mobile apps powered by modern AI and scalable backend systems. Clients value that I don’t just “write code” — I act as a product-minded Mobile App Developer, helping shape the roadmap, optimize monetization, and make smart technical decisions from day one. 📈 Highlights & Proven Results • Fitness iOS Mobile App Featured by Apple Built using Swift & SwiftUI with HealthKit and Core Data integration. A premium-quality iOS mobile app focused on performance, clean UI, and personalized fitness experiences. • Art & Exhibition Finder Android & iOS Mobile App (10K+ Daily Users) Large-scale cross-platform mobile app using Flutter, Google Maps, and Firebase. Delivered high-performance caching, push notifications, analytics, and scalable backend infrastructure. • AI-Powered Voice Shop Assistant (ChatGPT + Twilio) Developed an AI-driven mobile solution using OpenAI API, conversational AI, and real-time voice processing. A strong example of AI integration inside a production-ready mobile app. • AI Parenting iOS & Android Mobile App (1,000+ Downloads in First Week) Core ML, Firebase backend, push notifications, and personalized AI insights. Secure, scalable architecture designed for long-term growth. • Viral AI Attractiveness Mobile App (20K+ Downloads) Face detection, AI scoring engine, subscription monetization, and ASO-driven growth. Engineered for scale across both iOS mobile app and Android mobile app platforms. 🧰 What I Bring as a Mobile App Developer Platforms: iOS, Android, Flutter, watchOS, tvOS Languages: Swift, Kotlin, Dart, Objective-C Architecture: MVVM, VIPER, TCA, Clean Architecture UI: SwiftUI, UIKit, Jetpack Compose AI & ML: OpenAI API, ChatGPT integration, Core ML, NLP, Computer Vision Backend: Firebase, Supabase, REST APIs, GraphQL, WebSockets Monetization: RevenueCat, Superwall, subscriptions, paywalls Analytics: Amplitude, Firebase Analytics, AppsFlyer Advanced: Push notifications, VoIP (Twilio/Agora), geolocation, offline mode, barcode scanning, ARKit CI/CD: Fastlane, Xcode Cloud, GitHub Actions, Codemagic As a cross-platform Flutter Mobile App Developer and native iOS / Android Mobile App Developer, I specialize in turning early ideas into scalable AI-powered products — from architecture and development to testing, analytics, deployment, and post-launch growth. 💬 Why Clients Choose Me Clients often say I “just get it.” I translate business goals into scalable, high-performance mobile apps built with clean code, strong UX, and future-proof architecture. If you’re looking for a Senior Mobile App Developer (Swift, Kotlin, Flutter, AI) who thinks like both an engineer and a product owner — I’d be happy to help launch or scale your next iOS mobile app or Android mobile app. Updated: 03.07.26
Nikita S. has worked .
Dots mobile
Associated with
Dots mobile
$100K+
earned
Taras T.
$35/hr
100% Job Success
$300K+ earned
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I build mobile and web apps that feel fast, reliable, and easy to use — whether native mobile apps (Kotlin for Android, Swift for iOS), cross-platform apps (Flutter, React Native), or modern web applications (React, Next.js, Node.js). My goal is to make your product run smoothly, scale easily, and grow with your business. With a Ph.D. in Computer Science and 10+ years of development experience, I've successfully delivered 90+ iOS, Android, and web applications on Upwork — including custom solutions for logistics, healthcare, booking, education, and business automation. 💡 What I Do Best - Cross-platform mobile app development with Flutter & React Native - Native Android app development using Kotlin - Native iOS app development using Swift - Web application development with React, Next.js, and Node.js - Design of clean, maintainable architecture with scalability in mind - Integration of REST APIs, Firebase, AWS, and Supabase - Support for offline mode, background services, and push notifications - Performance optimization, UX improvements, and deployment (App Store, Google Play, web hosting) 🧠 Why Clients Choose Me I combine strong technical expertise with a product mindset — not just delivering code, but building reliable, user-friendly products that support long-term growth. Whether you're building an MVP or scaling an existing application, I can help you choose the right tools and technology stack for both mobile and web. 💬 Let's Build Something Solid If you're looking for a developer who covers both mobile and web ecosystems, let's discuss your next project.
Taras T. has worked .
TetaLab
Associated with
TetaLab
$500K+
earned
Dmitry B.
$50/hr
100% Job Success
$60K+ earned
Offers consultations
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Hi there, I'm the CEO of a company specializing in web and mobile development, UI/UX design, ERP and CRM systems, and Property Management Systems software development. Our company has been helping businesses of all sizes transform their digital presence and streamline their operations for over a decade. We are a team of highly skilled developers, designers, and project managers who are passionate about delivering exceptional software solutions to our clients. Our goal is to create software that not only meets the needs of our clients but exceeds their expectations in terms of usability, functionality, and design. We take a user-centric approach to our work, which means that we prioritize the needs of the end users when designing and developing software. Our team of UI/UX designers works closely with our clients to understand their brand and user requirements and then create designs that are visually stunning and easy to navigate. Our ERP and CRM systems expertise has helped our clients streamline their operations and manage their customer relationships more effectively. In addition, we have developed Property Management software that has helped real estate businesses manage their properties more efficiently. Our software is designed to be easy to use and provides real-time information about property occupancy, maintenance requests, and financial reporting. We are dedicated to providing our clients with exceptional software solutions to help them achieve their business goals. We take pride in our work and are committed to delivering projects on time and within budget. What we do: ✔️ ERP ✔️ CRM ✔️ SaaS ✔️ Property Management System ✔️ Construction Management platforms ✔️ Logistics solutions, Fleet and Freight Management Software ✔️ B2B / B2C Marketplaces ✔️ HealthTech solutions Let's get things done together!
Requestum
Associated with
Requestum
$9M+
earned
Roman N.
$55/hr
100% Job Success
$300K+ earned
Available now
Offers consultations
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🚀 Senior Next.js & React engineer - I build fast SaaS and web apps, recently cutting load time 40% for a platform with 20,000+ users. Top Rated Plus, 100% Job Success, $200K+ earned across 70 projects for US, EU, and Asia clients. ◄ What I Do Best ► ○ Build and scale modern web applications with ReactJS, Next.js, and TypeScript ○ Develop cross‑platform mobile apps using React Native ○ Create pixel‑perfect, responsive UI with TailwindCSS, CSS/SASS, and BEM methodology ○ Integrate APIs (REST, GraphQL) and optimize app performance ○ Lead projects from MVP to enterprise‑grade solutions ◄ Notable Projects ► ○ Educational Platform (Denmark) – improved loading speed by 40% and optimized UX for 20k+ users ○ Sea Navigation App – built a cross‑platform app with live weather and map integration ○ IoT Monitoring System – real‑time device tracking with custom dashboards ◄ Why Clients Choose Me ► ✅ Clear and fast communication ✅ Focus on business goals, not just code ✅ Proven track record with repeat clients ✅ On‑time delivery and transparent process 📩 Let’s discuss how I can help bring your project to life — send me a message and we’ll get started.
Roman N. has worked .
Iryna M.
$50/hr
100% Job Success
$100K+ earned
Offers consultations
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AI/ML engineer who cut a 6-hour manual review process to under 10 minutes using document AI and computer vision. 100% job success across 26 projects, $100K+ earned. I build AI systems that do real work. Results from deployed systems: Manufacturing Doc-AI — Computer vision (YOLOv8) + NLP on architectural blueprints for the largest US casework manufacturer. Estimation from 2-6 hours to under 10 min. 91% recall, 84% precision on production drawings. Detects cabinetry, reads MasterFormat specs, outputs structured estimates. AI Document Agent — Natural language search over 500MB+ PDF spec files. Answers with page + paragraph citations in under 30 seconds. Previously 30+ minutes per manual search. Multi-Agent Investment Research — LLM-based multi-agent system processing live financial data. Autonomous agent coordination with retrieval, analysis, and reporting pipelines. Backend & Long-Term Engagements — 4+ years with Xperi (DTS/TiVo), code running in BMW and Tesla. 5+ years with Internet Archive maintaining a 40,000-line Python platform powering worldwide book scanning. What I ship: LLM agents with tool calling, RAG over proprietary data, document AI (OCR + layout extraction), computer vision, and production Python backends. Weekly milestones with acceptance criteria. Handover includes runbooks, dashboards, and training.
Iryna M. has worked .
COXIT
Associated with
COXIT
$1M+
earned
Andrew L.
$28/hr
100% Job Success
$200K+ earned
Available now
Offers consultations
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👋 Greetings! I’m a seasoned Mobile developer with over 1️⃣5️⃣ years of experience in iOS and Android Mobile App Development. I combine design, development, and technical leadership to deliver high-quality, scalable apps. 🎓 M.S. in Computer Programming, with expertise across multiple development stacks. ⭐️ Hundreds of 5-star reviews and 🎯 100% Job Success on Upwork and beyond! 🚀 About Me As a full-cycle Mobile App Developer, I take your project from an initial 💡 idea to a fully functional 📱 mobile application. I handle everything from UI/UX design to backend API integration, ensuring a seamless experience from start to finish. Whether it’s native iOS development with SwiftUI or Android development using Kotlin or Java, I’m dedicated to building high-performing apps. I am a reliable Mobile developer for startups, enterprises, and innovative projects alike, bringing technical insight and creative problem-solving to every stage of development. 👉 Contact Me Reach out today for a Mobile App Developer consultation, and let’s discuss how to bring your app vision to life! 🛠️ Technologies & Tools Native iOS Development: Swift, SwiftUI, Objective-C, Core Data, Core Animation, XCTest Native Android Development: Java, Kotlin, Jetpack Compose, Room Database, Retrofit, Dagger, Coroutines Cross-Platform Development: Flutter, React Native (Dart, JavaScript) Backend Integration: Firebase, REST APIs, GraphQL, Node.js, Python, AWS, Azure, Google Cloud Databases: MySQL, PostgreSQL, MongoDB, Redis, Cassandra, Firestore, SQLite CI/CD & DevOps: GitHub Actions, GitLab CI, Jenkins, CircleCI, Docker, Kubernetes Testing & Automation: TDD, BDD, Unit Testing, XCTest, Espresso, Appium, Selenium, JUnit API & Payment Integration: REST, GraphQL, OAuth, Third-Party SDKs, Stripe, PayPal, Apple Pay, Google Pay 💪 Areas of Expertise I specialize as a Mobile App Developer in creating scalable mobile apps with microservices architecture and event-driven design that can handle high traffic. My apps are optimized for performance across iOS and Android platforms, ensuring the best user experience. 📱 Featured Projects Food & Retail Delivery Platforms: Real-time tracking, push notifications, and in-app payments. Social Media Apps: Chat, feeds, profiles, authentication, real-time updates. E-commerce & Marketplace Apps: Secure payments, commission systems, inventory management. Productivity Apps: Task and expense management apps using Flutter and React Native. 🌟 I turn ideas into market-ready apps as a professional Mobile developer, combining creativity with technical precision. Whether you need a native iOS app or a cross-platform solution, I provide complete Mobile App Development services from concept to launch. Let’s collaborate to make your app the next hit on the Apple App Store and Google Play Store! ⚡️ Updated portfolio: May 6, 2026
ServReality
Associated with
ServReality
$400K+
earned
Aleksander K.
$32/hr
$10K+ earned
Available now
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📊My last Next.js web app improved performance by 65%. A Healthcare digital platform i revamped increased user engagement and reduced front-end load times by 35%. I’m a Senior TypeScript/Next.js engineer with 10 years experience. I've shipped fast, scalable, accessible web applications with TypeScript, Next.js and React . I’ve built 25+ full-stack applications, 50+ high-performance Landing Pages, and 5+ scalable SaaS platforms. I can act as a Front End Architect and Tech Lead. I design clean component architectures, robust state management, and reliable API integrations that scale. My work spans event/ticketing platforms, real-time crypto dashboards, secure enterprise admin panels, and full-stack SaaS (NestJS + GraphQL + PostgreSQL). I care about accessibility, performance optimization, and maintainability. 🚀 𝗞𝗲𝘆 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀 • Mentored 15+ junior developers into strong TypeScript & frontend engineers • Led 8 Web Development teams (Agile / Scrum / Kanban) delivering complex Web Applications on time • Built secure CRMs, SaaS platforms with advanced dashboards, and Mobile Applications (React Native for iOS & Android) • Reduced front-end load times ~40% via code splitting, lazy loading, performance optimization (Lighthouse) • Improved development velocity ~30% with modular design patterns, scalable architectures (Turborepo + Vite) • Increased SaaS user engagement ~25% through UI/UX improvements, responsive design, design-system consistency • Delivered landing pages with 95+ Lighthouse performance scores 🎯 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗜 𝗼𝗳𝗳𝗲𝗿 - Front End development with TypeScript, Next.js, React, JavaScript (ES6+) - Design systems & component libraries: shadcn/ui, Radix UI, Tailwind CSS, styled-components, vanilla-extract, CSS Modules - API-driven applications: REST, GraphQL (Apollo Client), OpenAPI/Swagger, Axios; auth, RBAC, JWT, OAuth; form-heavy UIs (React Hook Form + Yup/Zod) - Dashboards & real-time experiences: WebSockets, data visualization (ECharts), streaming state, pagination & caching - Performance & refactoring: bundle splitting, lazy loading, route-level code splitting, Lighthouse audits, RUM - Architecture: monorepos (Turborepo), Vite (React SWC), Webpack, OpenAPI Generator, CI/CD (GitHub Actions) - QA & reliability: Playwright, unit tests, linting/formatting (ESLint, Prettier), conventional commits 🏆 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 - Front end: TypeScript, Next.js, React, JavaScript (ES6+), Redux, Redux Toolkit, Redux-Saga, React Context, Jotai, TanStack Query, TanStack Router - UI & Styling: Tailwind CSS, styled-components, CSS 3, HTML5, shadcn/ui, Radix UI, vanilla-extract, Responsive Design, Accessibility (react-aria-components), theming - Forms & Data: React Hook Form, Yup, Zod, Axios, ECharts, Data Visualization best practices - APIs & real-time: REST, OpenAPI/Swagger, GraphQL (Apollo), WebSockets - Back end & Database: Node.js, NestJS, Express, PostgreSQL, Prisma, MongoDB, MERN exposure - Tooling: Vite, Turborepo, Webpack, ESLint, Prettier, Docker, GitHub Actions, OpenAPI Generator, monorepo workflows - Testing: Playwright, unit/integration - Deployment & Observability: Vercel, Microsoft Application Insights, logging/monitoring hooks - Mobile: React Native (iOS/Android), Flutter 🛠️ 𝗪𝗵𝘆 𝘁𝗲𝗮𝗺𝘀 𝗵𝗶𝗿𝗲 𝗺𝗲 • Speed without debt: typed APIs, clean boundaries, maintainable state (Redux Toolkit/Jotai/TanStack Query) • Design-system mindset: focus/keyboard patterns, ARIA, theming, RTL, consistent tokens • Handover: docs, CI/CD, lint/format rules, sensible folder conventions, 💬 𝗘𝗻𝗴𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗺𝗼𝗱𝗲𝗹𝘀 • Fixed-scope MVPs with clear milestones & demos • Part-time augmentation (frontend lead, feature owner) • Audits & refactors (TypeScript migration, state cleanup, performance hardening) 📩 Have a spec, API, or Figma? Share it and I’ll send a mini plan (architecture, milestones, first shippable increment) and a clear fixed price for the initial slice. 🔍 𝗞𝗲𝘆𝘄𝗼𝗿𝗱 𝗯𝗹𝗼𝗰𝗸 Front-End Development, Front-End Developer, Front-End Architect, Senior TypeScript Developer, Remote TypeScript Developer, TypeScript, Next.js Developer, Full Stack Developer, Web Developer, UI Developer, React Developer, Next.js, JavaScript Developer, React, Next.js, React Native, Vue.js, JavaScript, ES6, Redux, Redux Toolkit, Redux Saga, Zustand, Jotai, TanStack Query, TanStack Router, HTML5, CSS 3, SCSS, SASS, CSS Modules, Styled Components, Tailwind CSS, Material UI, shadcn/ui, Radix UI, vanilla-extract, UI, UX, UI/UX Design, Accessibility, ARIA, WCAG, Cross-Browser Compatibility, Framer Motion, Node.js, Express.js, NestJS, REST, REST API, API Integration, GraphQL, Apollo Client, WebSockets, MERN Stack, Full-Stack Development, PostgreSQL, SQL, MongoDB, Prisma, Firebase, Supabase, Authentication, Authorization, RBAC, JWT, OAuth, Security, Vite, Webpack, Turborepo, Nx, Monorepo, npm, Yarn, ESLint, Storybook, Chromatic, Jest
YOUR R&D™
Associated with
YOUR R&D™
$100K+
earned
Dmytro K.
$35/hr
100% Job Success
$1M+ earned
Available now
Offers consultations
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Hi, I'm Dmytro. I'm a Front End developer with more than 8 years of experience building web and mobile applications for startups, product companies, and growing businesses. As a Front End developer, I've worked on MVPs, SaaS platforms, e-commerce products, internal business tools, and customer-facing applications used by thousands of users. My primary focus as a Front End developer is creating fast, responsive, and user-friendly applications using modern JavaScript technologies. I enjoy transforming complex requirements into clean, maintainable solutions that provide real value to users and businesses. Throughout my career as a Front End developer, I've worked closely with designers, product managers, backend engineers, and business stakeholders to deliver products that are both technically solid and enjoyable to use. I believe a successful Front End developer should understand not only the code but also the goals behind the product. Technologies I work with As a Front End developer, my main stack includes: React Next.js TypeScript JavaScript React Native Angular Vue.js HTML5 CSS3 Tailwind CSS Material UI (MUI) SCSS Webpack Vite Node.js Over the years, I've helped companies hire a reliable Front End developer who can contribute quickly, improve existing codebases, and build new features with confidence. What I can help with As a Front End developer, I can help with: Building modern web applications from scratch Developing scalable React and Next.js applications Creating reusable component libraries Design system implementation Responsive and mobile-first development Performance optimization Server-Side Rendering (SSR) Progressive Web Apps (PWA) API integration Frontend architecture React Native mobile applications Refactoring legacy projects Bug fixing and maintenance Many clients choose me as a Front End developer because I can quickly understand business requirements and translate them into practical solutions. When companies need a Front End developer who can take ownership of a feature from planning to production, I can provide that support. I've worked as a Front End developer on both small startup projects and large-scale applications. My experience as a Front End developer allows me to adapt to different team structures, coding standards, and development processes. Although my primary role is a Front End developer, I also have experience with backend development. This broader perspective helps me become a more effective Front End developer because I understand how frontend systems interact with APIs, databases, and cloud infrastructure. I've worked with: PostgreSQL MongoDB MySQL Firebase Firestore Supabase AWS Node.js Python PHP This experience allows me to work effectively with backend teams and contribute as a Front End developer who understands the complete product lifecycle. How I work I believe a great Front End developer should focus on more than writing code. A Front End developer should understand user experience, accessibility, performance, maintainability, and business objectives. As a Front End developer, I value clear communication, ownership, and attention to detail. Every Front End developer should be able to balance technical excellence with practical business needs, and that's the approach I bring to every project. I've also contributed as a Front End developer in areas such as: Code reviews Technical planning Frontend architecture Git workflows CI/CD pipelines Agile development Team collaboration Mentoring junior developers Whether you need a Front End developer for a short-term project, a Front End developer for long-term collaboration, or a Front End developer to strengthen your current engineering team, I can help. My goal as a Front End developer is to build products that users enjoy using and that businesses can confidently grow over time. Companies often look for a Front End developer who can join an existing team and become productive quickly. Others need a Front End developer to help launch a new product or modernize an existing application. In both cases, I focus on delivering reliable, maintainable, and scalable solutions. If you're looking for a Front End developer with strong React expertise, modern frontend experience, and a practical approach to product development, I'd be happy to discuss your project. Best regards, Dmytro
Dmytro K. has worked .
Join.To.IT - Top Rated Plus Agency 🏅
Associated with
Join.To.IT - Top Rated Plus Agency 🏅
$9M+
earned
Taras M.
$41/hr
100% Job Success
$800K+ earned
Available now
Offers consultations
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❤️CLIENT-oriented React Developer available for LONG-TERM projects | 🔥 116 jobs on Upwork and 0 negative feedback | 💸 Remote full stack developer with full integration in your team that makes a profit | 🚫 No small fixes ❗️ No small fixed price work | To hear me and more about my soft skills, take a look at my video introduction and the video testimonials from my previous clients (attached to the portfolio) ABOUT ME I have more than 8 years of experience building high‑traffic react nextjs applications. I help teams turn complex ideas into profitable React Node.web and React Narive mobile apps, shipping MVPs up to 3x faster using AI. With excellent communication skills and a flexible working attitude, I have successfully collaborated with clients from 23 countries, consistently implementing a “can-do” approach MY KEY ACHIEVEMENTS ✔ As a React Frontend Developer I developed a React SaaS product that simplified construction estimations, reaching 98% accuracy and reducing project estimation timelines from weeks to minutes. ✔ As a Senior React Developer I led Frontend React Nextjs Project of a global $100M+ enterprise, leveraging React Nextjs frontend Typescript , and Redux ✔ As a Frontend React Developer I worked together with Python Developer to build a high-performance marketplace, handling 500K+ monthly users. I also ensured seamless API integrations, real-time updates, and secure transactions ✔ As a React Developer I worked on Frontend react nextjs of the real-time analytics dashboard also using Redux and D3.js, allowing businesses to track KPIs in real-time and increase operational efficiency by 35% ✔ While working as a React native app developer , I also created a React Native mobile app for real-time event invitations, handling 100K+ active users with 99.8% uptime ✔ Working in the HealthTech industry as a Senior Frontend React Developer JS , I delivered a HIPAA-compliant patient portal on React that cut virtual-visit check-in times from 25 minutes to 8 minutes, serving 40 K weekly sessions ✔ As a React Nextjs Frontend Developer I created a booking system for a company in the hospitality industry, integrating Stripe, Twilio SMS, and calendar syncing, resulting in 95% fewer missed appointments ✔ While working on a LogisticsTech SaaS , I contributed to a Frontend React Development of live shipment tracking system using WebSockets (it works across 4 continents) ✔ In the EdTech sector as a React Nextjs Frontend Developer I developed an interactive React-based learning platform with gamified features, increasing course completion rates by 38% and supporting over 200K concurrent learners ✔ As a Full Stack Developer React Node for a Travel platform, I implemented a dynamic search and booking flow that decreased booking abandonment by 42% and processed $15M+ in monthly reservations ✔ In the Real Estate sector, I developed an interactive 3D model viewer in React, allowing users to explore spaces and products in real time, increasing engagement and conversion rates by 40% ✔ As a Frontend React Developer for a PropTech startup project, I built a property management dashboard that automated 85% of tenant requests, cutting operational costs by $500K annually ✔ In a Media & Entertainment project I worked as Full Stack Developer AI and built and deployed a real-time recommendation engine using deep learning, personalizing video content for 250K+ daily users ✔ For a RetailTech platform, as a full stack developer react node , I developed a customer rewards portal that drove a 60% increase in repeat purchases ✔ Working in InsurTech, python full stack developer and I engineered a policy comparison tool with real-time data feeds, reducing policy selection time from 40 minutes to under 5 minutes for 100K+ users monthly ✔ In the AgriTech industry I worked as Full Stack Developer react node and created a react nextjs frontend dashboard for IoT sensor data, enabling farmers to optimize irrigation schedules and reduce water consumption by 25% across more than 1,500 farms As a Senior React Developer firebase , I not only have extensive experience with various JavaScript frameworks ( I have over 8 years of experience in frontend react development and back-end development, and 5 years in mobile app development ) but also hold Bachelor's degree in Engineering Software. I have built and optimized scalable, high-performance web apps using React.js and have developed React Native mobile applications with lightning-fast performance Need to launch fast? As a Full Stack Developer AI , I can take your MVP from zero to live in 4 weeks, leveraging AI to streamline workflows, cut engineering overhead by 30%, and accelerate your path to seed funding as I have already done it before With me, your next release ships on schedule, scales to hundreds of thousands of users, and lets you focus on growth Let's begin the collaboration with TOP RATED PLUS Full stack Developer React by clicking "Invite" or "Hire" on the top right ↗️ 07.04.26
Taras M. has worked .
Lengin
Associated with
Lengin
$500K+
earned
Oleksii P.
$45/hr
100% Job Success
$600K+ earned
Offers consultations
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If your application is lagging, your cloud bills are skyrocketing, or your codebase has become too messy to maintain — you don’t need more theoretical consulting. You need a hands-on fixer. I am a Solutions Architect and Technical Lead. I don’t just draw diagrams; I dive into the code, stabilize infrastructure, and lead a vetted team of senior engineers to execute solutions immediately. Whether you need an emergency fix or a complete system overhaul, we deliver fast, reliable results without the overhead of traditional agencies. ** WHAT I ACTUALLY DO (AND HOW MY TEAM EXECUTES):** ▪ Performance & Speed Optimization: Eliminate bottlenecks, optimize databases, and make your app lightning-fast. ▪ Emergency Production Fixes: Stop crashes, handle sudden traffic spikes, and restore system stability. ▪ AWS & Cloud Cost Reduction: Audit cloud infrastructure to slash monthly bills by 30-50% without losing performance. ▪ Legacy Code Modernization: Refactor heavy, unstable monoliths into clean, maintainable microservices. ▪ CI/CD & DevOps Automation: Build bulletproof deployment pipelines for predictable, zero-downtime releases. ** THE EXACT PROBLEMS WE SOLVE: ** ▪ "Our system slows down or crashes during peak traffic"➔ We implement smart caching (Redis), optimize MySQL/PostgreSQL, and set up proper autoscaling. ▪ "Our infrastructure costs are bleeding money"➔ We run a deep AWS/Cloud audit, remove resource waste, and right-size your servers. ▪ "Deployments are a nightmare and keep breaking things"➔ We pack your environment into Docker and build reliable CI/CD pipelines. ▪ "Technical debt is blocking us from shipping new features"➔ We clean up legacy PHP/Node.js code, establish clear boundaries, and accelerate development. ** TECH STACK WE DOMINATE: ** ▪ Backend: PHP (Symfony, Laravel, Laminas, Yii), Node.js (Microservices, REST & GraphQL APIs) ▪ Cloud & DevOps: AWS (EC2, RDS, ElastiCache, OpenSearch, S3, CloudFront), Azure, GCP, Docker, CI/CD pipelines ▪ Data & Caching: MySQL, PostgreSQL, MongoDB, Redis, Elasticsearch / OpenSearch ▪ E-commerce Infrastructure: High-scale Magento/Woocommerce backend setups, distributed commerce integrations, and performance rescuing. ** HOW WE WORK: ** ▪ No Overengineering: We focus on clean architecture and practical solutions that serve your business goals. ▪ No "Quick Fixes" That Break in 3 Months: We deliver scalable, long-term maintainability. ▪ Measurable Results: You get clear status updates, documented changes, and visible performance improvements. If your software system is struggling, costs too much, or has become a nightmare to maintain — let’s jump on a call and fix it properly.
Oleksii P. has worked .
Skynix
Associated with
Skynix
$3M+
earned