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Highly skilled and innovative software development professional with strong technical background and several years of experience in building web based and UI applications under various domains. Thorough knowledge of React, Next.js, Node.js, ExpressJS, NestJS, MongoDB, SQL, ECMAScript6, Javscript/Typescript. Skilled at connecting exceptional assets with users via creative UI frameworks and careful user experience optimization. Skills & Expertise: * Excellent hands on experience in Object Oriented JavaScript and TypeScript programming and MVC frameworks * Building user interfaces based on JavaScript and TypeScript that are barrier-free, responsive and cross-browser compatible * Implementing component life cycle architecture, store actions using Socket.io in React-Redux app to handle real time data, installing React Router, Thunk Redux for API calls * Working experience with Node environment using NodeJS, NPM, GruntJS, Bower * Experience in developing web service applications using SOAP and REST APIS * Proficient in SQL, PL/SQL programming, stored procedures, triggers and queries optimization, database normalization Additionally: * Clean code is my calling card * Can express myself in English and have good communication skills. * Enthusiastic about the latest web technologies. Never stop learning and eager to develop myself technically.

I help founders turn complex product ideas into production systems that create value early and scale safely. As a Systems Architect & Fractional CTO with 25+ years of experience, I build complex software systems — from embedded hardware and low-level programming to distributed platforms, fintech infrastructure, Web3 systems, and high-load services. My role is rarely “just writing code.” I work at the point where business logic, architecture, infrastructure, and delivery meet. I help founders determine what should be built first, where critical system boundaries lie, which technical risks matter now, and which complexity can safely wait. My preferred approach is evolutionary architecture: build the smallest sound production system → launch → create value → learn from real usage → evolve without architectural rewrites. I avoid both premature over-engineering and disposable MVPs. SELECTED EXPERIENCE ✔ Designed distributed infrastructure managing thousands of geographically distributed devices under continuous production load. ✔ Reduced blockchain operating costs by approximately 90% by redesigning TRON energy management and transaction strategy, resulting in six-figure annual savings. ✔ Designed secure financial infrastructure for cryptocurrency payment processing, wallet management, accounting, and settlement. ✔ Built real-time trading and market intelligence systems processing tens of millions of market records, including Redis-backed analytics, arbitrage engines, and statistical anomaly detection. ✔ Designed custom cryptographic protection that prevented a significant financial loss where conventional security mechanisms were insufficient. ✔ Led architecture decisions across fintech, Web3, payment systems, high-load backend platforms, IoT infrastructure, and hardware integration. CORE ARCHITECTURE AREAS Software Architecture • Distributed Systems • Domain-Driven Design (DDD) • Event-Driven Architecture • High-Load Systems • Scalability & Performance • Architecture Reviews • Technical Due Diligence • Legacy Modernization AI & INTELLIGENT SYSTEMS AI Platform Architecture • LLM Integration (OpenAI, Claude, Gemini) • AI Agent Workflows • MCP Integrations • RAG Architecture • Workflow Automation FINTECH & WEB3 Payment Platforms (Stripe & Custom Gateways) • Blockchain Integration • Wallet Infrastructure • Smart Contracts • Financial Transaction Processing • Double-Entry Accounting • Crypto Infrastructure ENGINEERING STACK Node.js • TypeScript • NestJS • PostgreSQL • Redis • RabbitMQ • Docker • Linux • Solidity • EVM • TRON HOW I WORK I am usually most useful when: • a founder has a strong product idea but the technical model is still unclear; • an MVP works but needs a path to production scale; • architecture is becoming difficult to evolve; • performance, reliability, security, or technical debt constrain growth; • a project needs architectural leadership rather than additional development capacity. I take direct responsibility for architecture, technical strategy, and senior engineering decisions. When additional implementation capacity is needed, I can also bring trusted engineering resources under my architectural and delivery oversight. The objective is simple: build systems that create value early and continue to work as your business grows. Have a complex product or architecture challenge? Send me a brief overview and I’ll tell you where I see the main technical risks and opportunities.

With more than 20 years of experience in the IT industry, I have developed a solid foundation in software architecture, design, and development. My expertise spans across multiple programming languages and frameworks, including C/C++, Qt/QML, C#/.NET, JavaScript, Node.js, Python, and Golang, allowing me to create robust web services, backend systems, as well as client-server and rich desktop and mobile applications. My background also includes strong capabilities in database architecture and design, specifically with PostgreSQL. I also possess extensive experience working with REST APIs, MS Bot Framework, and neural network algorithms. My proficiency in managing foreign customer relationships, along with my excellent command of English and negotiation skills, make me a valuable asset to any team. I am a self-motivated leader with a penchant for project management. I have a proven track record of effectively solving complex problems and working well in team environments. I enjoy proposing and implementing universal solutions that benefit everyone involved, and I am committed to maintaining my physical fitness in order to optimize my work performance.

I work as a professional programmer, web-developer since 1998. I worked with various programming languages and various web tech, so now I have a huge experience. Now I'm focused on these directions: .NET, Delphi and PHP: #1 .NET - WinForms, WPF, WCF, ASP.NET (WebForms, Razor, Blazor), Web API, .NET remoting, Entity Framework, DBML, NHibernate, Telerik, NetMQ. (both languages C# and VB.NET) #2. Delphi 5.0 - 12 #3. PHP - PHP7/8, PHP frameworks (Laravel, Lumen, Yii2, CakePhp, CodeIgniter), PHP modules like Swoole, pthreads, etc If this is a web-development, then this will include also work with: HTML/CSS, JavaScript, AJAX, Json, RESTful API, API/SDK, Bootstrap, VueJS, ReactJS, Kendo UI, DevExpress, etc. Databases: MS SQL, MySQL, PostgreSQL, ORACLE, Interbase, etc. I have good experience working with Agile tools such as Jira, Trello

Greetings! I have been working as a Java developer for more than 14 years, my main clients are from Europe, Israel, India, China and USA. I am developing both desktop software and web applications, RESTful microservices etc. You can safely entrust me with the work on your project and will never be disappointed in our cooperation, I can guarantee the high responsibility and quality of the tasks that I carry out, which you can be sure of when you take me to your team. Main skills: Java technologies: - Java 8, 9, 11, 17 - JavaFX - Zuul, Ribbon, Eureka - Spring: Core, MVC, Web-flow, Integration, Batch, Boot, Social, Data, Config - Quarkus - Maven 2/3, JUnit 4 - JMS: RabbitMQ, ActiveMQ - JDBC, Hibernate 3.x, Neo4j - ESB, JNDI, JSP - WebDriver - JHipster NodeJS development: assisting libraries: express, async, soap, log4js connectivity: mongodb, redis, stomp-client, socket-io testing, building: should, mocha, grunt deployment: PM2, npm publishing and related activities promises, some EcmaScript 6 thingies Front-end development: Angular HTML 5, CSS 3, JavaScript (ES 5/6) JQuery, Bootstrap Other: pug (jade) Datastores: MySQL, MongoDB, PostgreSQL Other: AWS, Google Cloud, Azure services: Compute Engine, Cloud Storage, Data Store, SQL regular usage of Linux-based systems (anything necessary to develop and support software) infrastructure: Jenkins, SVN, git - commit/push/pull level ActiveMQ, Camel Elasticsearch

Senior Flutter developer, 7+ years and 30+ shipped apps. I work on real-time and media: WebRTC, live streaming, Smart TV, gRPC and WebSocket - the parts of an app that break in production, not in the demo. Video calls that survive a weak network. A stream that does not stall. A TV app that behaves on a remote. The hard part is never the happy path - it is reconnection logic, state sync, and the edge cases that only show up on someone else's hardware. REAL-TIME AND MEDIA - WebRTC - video and audio calling, including end-to-end encrypted calls - Video streaming and playback - ExoPlayer, media pipelines, VOD and live - Smart TV - Android TV and Fire TV, remote-first navigation - Real-time data - gRPC/Protobuf streams, WebSocket, Socket IO - Audio streaming - my first production project, back in 2019, was an online radio app FLUTTER From architecture to store release: - Multi-package monorepos and Clean Architecture - BLoC/Cubit, Provider, MobX, GetX - chosen per project, not per habit - Mobile, TV and desktop from one codebase - Native platform channels in Kotlin and Swift when Dart is not enough - Freezed, Retrofit/Dio, Hive, Firebase, GraphQL, CI/CD BEYOND THE CLIENT SIDE - Java / Spring Boot - multi-module services, features, PRs, production debugging - Go and Rust - services and video tooling SYSTEMS AND C++ I maintain a native macOS port of a 2003 C++ game engine: custom Apple Metal renderer, native ARM64, and a dual-build setup that keeps cross-platform multiplayer deterministic by reconciling x87 extended precision down to IEEE 754. Live player base - 45 players and 4,800+ tracked events in the first 18 days after I instrumented the launcher. Built with heavy AI assistance, which is how I approach large legacy codebases. OPEN SOURCE Verified publisher on the official Dart package registry - 5 packages, ~1.6k downloads: a camera plugin, an autocomplete widget, a base kit and a Freezed formatter. HOW I WORK I am opinionated about architecture. If a shortcut will cost you later, I say so before writing it. - SOLID and DRY as working rules, not slogans - no god objects, no spaghetti - Small methods and early returns instead of deep nesting - Naming and structure carry the meaning; if code needs a comment to be understood, it gets refactored - Consistent layering, so the next developer finds things where they expect them - Written updates and clear PR descriptions Send me your project details and I will tell you honestly whether I am the right fit and how I would approach it.