Full Stack Developer and technical partner with 10+ years of experience building SaaS platforms, cloud applications, and complex digital products from idea to production. ⭐ 5.0 client feedback 🏆 100+ successful client partnerships 🤖 AI-enhanced engineering with Claude and modern AI tools 🚀 Founder & CEO of Softonix I work with startups, scale-ups, and established businesses that need more than a developer who simply completes tickets. Need one senior technical partner? I can work hands-on. Need more firepower? I can bring in the right engineers from my team while staying directly involved in your project. I help take products from an idea, prototype, or legacy system to a production-ready solution, covering technical planning, architecture, frontend, backend, cloud, integrations, QA, deployment, and ongoing development. ⚡ WHAT SETS ME APART → From idea to production I look beyond individual tickets and focus on the product, users, workflows, and business goals behind the code. Before development starts, I help clarify the technical approach, key workflows, risks, and feature priorities so engineering time goes where it creates the most value. → AI-enhanced development I actively use Claude and modern AI engineering tools to accelerate code analysis, implementation, rapid prototyping, and repetitive development work. The result is faster execution combined with senior technical judgment around architecture, code quality, security, and long-term maintainability. → End-to-end technical ownership Discovery → Architecture → Frontend → Backend → APIs → Cloud → QA → Deployment → Maintenance Whether we're launching a new SaaS product or modernizing an existing platform, I focus on building software that is ready for real users and future growth. 🛠 CORE EXPERTISE Frontend: React.js, Next.js, Vue.js, Nuxt, Angular, TypeScript, JavaScript, Tailwind CSS Backend: Node.js, .NET, ASP.NET Core, REST APIs, microservices Cloud & architecture: AWS, Azure, cloud-native applications, SaaS architecture, scalable systems, third-party integrations Mobile: Flutter, React Native, cross-platform mobile applications AI engineering: Claude, LLM integrations, AI APIs, AI-assisted development workflows, AI-enabled SaaS products My hands-on and team experience spans SaaS, analytics, HRTech, marketplaces, AdTech, automotive software, FinTech, e-commerce, and mobile products. 🤝 SOLO WHEN IT FITS. TEAM WHEN IT SCALES. As the Founder & CEO of Softonix, I've helped 100+ clients navigate complex technical challenges while balancing delivery speed, product quality, and development costs. Depending on the project, I can work hands-on or bring in the right engineers from my team while staying directly involved in the technical direction and delivery. You get direct communication and senior technical involvement, with access to experienced frontend, backend, Flutter, React Native, QA, and cloud engineers when the project needs more capacity or specialized expertise. Softonix is your engineering team when you don't have one, and your extra firepower when you do ⚡ Send me an invite and let’s get started!

I build complete software products from front to back. That includes the frontend, backend, databases, infrastructure, deployment, and the overall system architecture. Working with one developer who understands the entire stack makes development simpler and avoids the overhead of coordinating multiple specialists. With 6+ years of professional experience, I've built and maintained production systems across web and mobile. My focus has always been on building software that's reliable, maintainable, and easy to extend as products grow. I care more about solid architecture, clean code, and long-term maintainability than chasing whatever framework is popular at the moment. I also use AI coding tools as part of my workflow. Used properly, they can significantly speed up development and improve overall productivity. The value doesn't come from the tools themselves—it comes from knowing when to trust them, when to challenge them, and how to use them without compromising code quality. Experience and engineering fundamentals still make the difference. Core technologies: TypeScript / JavaScript / Python React / Next.js / Vue.js / React Native Node.js / NestJS / Express.js SQL / NoSQL Git / Docker / VPS / Cloudflare / AWS / Claude Code If you need someone who can take your product from idea to production—or jump into an existing codebase and move it forward—send me the details, and I'll tell you honestly how I'd approach it.

Web development, Full-stack, HMTL5 CSS 3 and CSS frameworks, Javascript, React JS, Vanilla JavaScript, Next JS, Supabase, mongoDB, tailwind css, React Native, Expo, TypeScript, ExpressJS, Deno, Stripe

Hello! 👋 I’m a Senior Full‑Stack Engineer who helps founders and teams ship product features without drama. My focus is business outcomes first: clear scope, predictable delivery, maintainable code, and a UI that feels polished and trustworthy. I’m comfortable owning a feature end-to-end – from discovery and UX decisions to backend architecture, deployment, and monitoring. I’m also UI/UX-minded: I can prototype flows in Figma, define a simple design system (tokens/components), and ship it as clean, accessible UI. For design-only tasks, check my UI/UX specialized profile. What I can help you with ::: SaaS and internal tools: dashboards, admin panels, role/permission systems ::: Headless CMS builds: Strapi / Payload CMS, content modeling, roles, custom APIs, SEO workflows ::: Cross-platform: Tauri/Dioxus, Flutter – desktop/mobile + native integrations ::: Web3: on/off-chain architecture – wallets, indexers, token/NFT tooling, dApp, backend integrations ::: AI features: OpenAI tool-calling, RAG pipelines, evaluation, cost/performance tuning ::: Backend & real‑time: REST/GraphQL, WebSockets, background jobs, queues, caching ::: Bots & integrations: Telegram + Discord, webhooks, payments, third‑party APIs ::: Hardening: performance, security basics, stability, observability, production support How I work ::: Align on goals and constraints → define measurable success (speed, conversion, reliability, cost) ::: Provide a delivery plan → milestones, risks, tradeoffs ::: Ship iteratively → short feedback loops, demos, transparent progress ::: Stabilize → edge cases, testing where it matters, monitoring and docs Tech snapshot ::: Frontend: Vue / React, Nuxt / Next.js, Astro, TypeScript, component systems, design tokens, Tailwind ::: Backend: Rust, Go, Node/Bun/Deno – APIs, real-time, background jobs ::: Data: PostgreSQL, Redis, SQL performance and indexing ::: CMS: Strapi, Payload CMS ::: Cross-platform: Tauri/Dioxus, Flutter ::: Web3: Solana, wallets, on-chain data, indexers, dApp integrations ::: Delivery: Docker, Kubernetes, CI/CD (GitHub Actions), Nginx/Traefik, logging/metrics ::: AI: OpenAI API integrations, RAG, evaluation, cost/perf tuning If you want someone who communicates clearly, thinks in outcomes, and can own delivery from UI to production – message me with your goal and any constraints, and I’ll propose the cleanest path to ship. Keywords Full‑Stack Developer, Full‑Stack Engineer, Web Application Development, SaaS Development, Frontend Development, Backend Development, API Development, API Integration, System Design, Solution Architecture, Clean Architecture, Domain‑Driven Design, Scalability, Security, Performance Optimization, TypeScript, JavaScript, Vue, Vue 3, Nuxt, React, Next.js, TanStack Query, Design Systems, UI Architecture, Component Library, Design Tokens, Tailwind CSS, Radix UI, Framer Motion, GSAP, Node.js, Bun, Deno, Go, Golang, REST, GraphQL, WebSockets, SocketIO, OpenAPI, Swagger, PostgreSQL, Redis, Database Design, SQL Optimization, Indexing, Caching, Prisma, Drizzle ORM, TypeORM, SeaORM, JWT, OAuth2, OpenID Connect, RBAC, ACL, Rate Limiting, Webhooks, Stripe, Payment Integration, Headless CMS, Strapi, Payload CMS, Docker, Kubernetes, CI/CD, GitHub Actions, Nginx, Traefik, Microservices, Observability, OpenTelemetry, Prometheus, Grafana, Sentry, Monorepo, Turborepo, Storybook, Lighthouse, Core Web Vitals, SSR, Edge Rendering, Background Jobs, Cron Jobs, Rust, Async Rust, Rust Backend, Tauri, Dioxus, Playwright, Cypress, Vitest, Telegram Bot, Telegram API, Telegram Mini Apps, grammY, teloxide, Discord Bot, discord.js, Discordeno, OpenAI API, LLM Integration, RAG, Vector Search, Embeddings, Tool Calling, Agentic Workflows, Guardrails, Cost Optimization, Cross-platform Development, Desktop App Development, Mobile App Development, Solana, Web3, Blockchain, Wallet Integration, On-chain Data

With over a decade of experience in full-stack web development and architecture, I bring a wealth of knowledge and a track record of delivering high-performance, scalable applications. My expertise spans the entire development lifecycle, from conceptualization to deployment and maintenance. What sets me apart: Full-Stack Mastery: Proficient in both front-end (React, Vue.js, Angular) and back-end (Node.js, Python) technologies. AI Integration Specialist: Experienced in implementing machine learning models, natural language processing, and computer vision into web applications. Zendesk & Zoho & Analytics integration specialist. Scalable Architecture: Skilled in designing and building systems that can handle millions of users. Cloud Expertise: Extensive experience with AWS, Google Cloud, and Azure for robust, cloud-native solutions. Agile Methodologies: Adept at working in fast-paced, collaborative environments using Scrum and Kanban. Problem Solver: Known for tackling complex challenges and delivering innovative solutions. Continuous Learner: Always up-to-date with the latest web technologies and AI advancements. Harvard MBA graduate - the CORe program, completed in March, 2024 Whether you need to enhance your existing web application with AI capabilities, build a new system from the ground up, or optimize your current infrastructure, I have the skills and experience to exceed your expectations. Let's collaborate to bring your vision to life with the perfect blend of established web technologies and cutting-edge AI innovations.

Are you a non-technical founder or business owner with a clear vision, but no desire to manage a dev team? As a Fractional CTO and Lead Architect with 15+ years of experience, I take your software from napkin sketch to live production. I operate at the intersection of senior engineering and executive technical leadership. My role is to act as your "Tech-to-Business Translator" - converting your commercial objectives into scalable, high-performance architecture without the confusing jargon, giving you absolute visibility over your product. I leverage advanced AI tooling and strict architectural standards as a development force multiplier. This means you get the execution speed, output, and reliability of a full engineering team through a single, highly accountable expert. No coordination overhead. No junior-dev babysitting. No technical black boxes. THE TERMS OF ENGAGEMENT: * The 14-Day Mutual Alignment Guarantee: Software architecture requires absolute trust. If you are not completely satisfied with my execution, or if our communication styles do not perfectly align within the first two weeks, I issue a 100% refund, no questions asked. * Async-First Execution: I protect your budget by protecting my focus. We hold one highly structured weekly alignment call to review progress. All daily communication and updates are handled asynchronously via text or Loom video. You pay for engineering throughput, not meeting bloat. * Clean Handoff & IP Sovereignty: You hold the root infrastructure keys and own 100% of the source code and intellectual property from day one. No proprietary vendor lock-in. * 30-Day Code Warranty: I stand by my architecture. I patch any bugs within the delivered scope for free for 30 days post-launch. WHAT I ARCHITECT & DELIVER: * Core SaaS MVP Development: Lean, zero-dependency, hyper-fast systems designed for rapid market validation. * Deterministic AI Integrations: Production-grade LLM pipelines, autonomous subagents, and secure RAG systems built to eliminate hallucination risks. * Bulletproof Backend APIs: Robust, highly secure data layers and infrastructure designed to support complex web and mobile frontends. * High-Efficiency Infrastructure: Cost-effective self-hosted deployments (Hetzner, Docker, Traefik) that keep your ongoing server overhead near zero. LIFETIME PERFORMANCE METRICS: * Upwork Expert-Vetted Status (Top 1% of historical talent on the platform) * $395K+ earned across 100% Job Success software deployments * Over 80+ completed projects with zero hourly-tracking friction * Founder of NeatSoft PTE LTD (Singapore corporate entity) If you need an autonomous technical partner to take complete ownership of your engineering pipeline, send me a message describing your core business objective. I will respond with a clear, jargon-free technical path forward. --------- Core Tech Stack & Search Keywords: Fractional CTO, Software Architecture, SaaS MVP Development, TypeScript, Deno, Preact, Hono.js, SSR Fresh, REST API Development, Backend Architecture, PostgreSQL, Valkey, Docker Compose, Traefik, Hetzner Dedicated Servers, Self-Hosted Infrastructure, PWA, React, Next.js, Tailwind CSS, Node.js, Express.js, Firebase, Supabase, Generative AI, Large Language Models, LLM Pipelines, DeepSeek, Claude 3.5, OpenAI API, RAG, Vector Databases, Prompt Engineering, System Performance Optimization, Web Security, CI/CD, API Integration, Stripe, Algolia, Twilio.

I care more about resolving your problem than simply finishing your projects. I can implement anything related to backend. Able to understand how code works and learn new things quickly (have understanding about most common programming patterns). Can improve your existing app performance or dig into bugs/memory leaks. I’m using VSCode for coding. Prefer functional reactive programming, pure functions, strict types (typescript). Trying to keep codebase clean and self-describing. Actively using AI agents (Claude Max) in my workflows. Write me if you have something interesting! 🌍 🌍 🌍 I've emigrated from Russia and now located in Tbilisi, Georgia 🌠 🌠 🌠 node.js nodejs deno expressjs mongodb typescript graphql typegoose mcp openai chatgpt claude typeorm apollo react redux rxjs xstream cycle.js angular webpack javascript ava koajs heroku aws s3 aws ses aws ec2 aws dynamodb aws alexa mongoose vogels canjs cheerio phantom slimer casper electron tape passportjs pdfkit async babel pm2 puppeteer apify crawlee jest

Full-Stack Software, Mobile & Game Developer | Python, Django, Flutter, Dart, Unity, Godot, C#, C++ Hi! I’m Esteban — a passionate Software Developer and Game Developer with over 15 years of experience delivering reliable, scalable, and high-performance solutions across web, backend, and cross-platform game development. From REST APIs and ETL pipelines to PC/mobile games and interactive tools, I provide end-to-end development with a focus on clean code, performance, and maintainability. AI Software Developer • LangChain RAG • Local LLMs • Vector Search Backend/AI Developer | LangChain • Retrieval-Augmented Generation LangChain (RAG, retrievers, text splitters, chains) Vector search Embeddings & retrieval (document chunking, indexing, similarity search) Local LLM runtimes (OpenAI-compatible APIs) Python Software Development Languages & Frameworks: Python, Django, Django REST Framework (DRF), FastAPI, LangChain Architecture: Microservices, Clean Architecture, Backend Systems APIs & Automation: RESTful APIs, ETL pipelines, Data Processing, Queue Workers (Celery, Redis) Databases: PostgreSQL, MySQL, Redis, Elasticsearch, NoSQL (MongoDB), Vector Database DevOps: Docker, Ansible, CI/CD, Linux Server Management Mobile Development Specializing in Flutter and Dart, I build efficient, beautiful, and maintainable mobile apps that work seamlessly across platforms. From UI/UX design and frontend implementation to backend integration, API development, and AI-powered features, I provide end-to-end mobile development with a focus on clean code, performance, and user-centric features. Mobile App Development Languages & Frameworks: Flutter, Dart (including state management with Riverpod, Provider, Bloc), JavaScript/TypeScript (Node.js, Deno, Bun for backend), Backend Integration: RESTful APIs, API development with Django REST Framework (DRF), FastAPI, Node.js/Express, data processing for mobile apps AI Integration: Building AI-enhanced mobile apps with LangChain and LangGraph for retrieval-augmented generation (RAG), chains, and agents; Integrating large language models via OpenAI API or other LLM APIs; On-device or local AI using Ollama, Llama, LM Studio servers for features like chatbots, personalized recommendations, natural language processing, image analysis, or offline AI capabilities Databases: PostgreSQL, MySQL, Redis, MongoDB, Firebase Firestore, Supabase (for mobile backend support) APIs & Automation: Custom API endpoints, third-party integrations (e.g., Firebase, Supabase, Google Maps, Mapbox, Stripe, AWS Amplify, Auth0, OpenAI), ETL pipelines for data syncing in apps DevOps for Mobile: Docker for containerized backends, CI/CD pipelines for app deployment, app store submissions (Google Play, Apple App Store) Game Development Languages: C#, C++, Lua, Haxe, JavaScript, Java Engines: Unity (C#), Godot (GDScript/C#), Unreal Engine (C++/Blueprints), GameMaker, Phaser, Construct Platforms: Windows, macOS, Android, iOS, Web (HTML5/WebGL), Linux Specialties: Gameplay Programming, Systems Architecture, Tools Development Visual Scripting: Unity Visual Scripting, Blueprints, FlowCanvas SDKs: Ads, IAP, Analytics, Multiplayer, Leaderboards (Firebase, PlayFab, etc.) 15+ years of proven experience across software and game development Cross-platform and cross-discipline: web apps, SaaS, mobile games, data pipelines Fast, clear communication and agile-friendly delivery Focused on scalable architecture, long-term code health, and performance Adaptable to your project’s tools, scope, and business goals

🧩 I'll handle all your technical details; you focus on your business. 👋 Currently 𝗢𝗣𝗘𝗡 to roles. 📞 Want to discuss your project? Send me a 𝗠𝗘𝗦𝗦𝗔𝗚𝗘 or Click 𝗠𝗘𝗘𝗧 to set up a quick discovery call. 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗 & 𝗦𝗖𝗔𝗟𝗘: - AI Agents & Workflow: Automated knowledge bases, smart workflow automation - SaaS & Marketplaces: End-to-end MVP development for marketplace platforms - Enterprise Integrations: Connect custom LLMs and intelligent chatbots into existing infra - Data Pipelines & Visualization: Real-time dashboards, and custom analytics 𝗔𝗜 𝗖𝗛𝗔𝗧𝗕𝗢𝗧 & 𝗔𝗜 𝗔𝗚𝗘𝗡𝗧: AI Agents, LangChain, LangSmith, LangGraph, CrewAI, AutoGen, DSPy AI Integration, LLM, Prompt Engineering, n8n Machine Learning, ML NLP 𝗕𝗔𝗖𝗞𝗘𝗡𝗗: Node.js, Nest.js, Python, FastAPI, LAMP Supabase, REST API 𝗙𝗥𝗢𝗡𝗧𝗘𝗡𝗗: JavaScript, TypeScript, Next.js, React.js, Nuxt.js, Vue.js Web Design, Wireframe, Figma, UI, UX 𝗗𝗘𝗩𝗢𝗣𝗦 : CI/CD, Docker, Jenkins, GitHub actions Vercel, Digital Ocean, Azure, GCP, AWS, Hetzner Cloudflare, NameCheap 𝗗𝗔𝗧𝗔𝗕𝗔𝗦𝗘𝗦: SQL MySQL, PostgreSQL, Firebase, Supabase Redis, VectorDB (PineCone) 👇 𝗥𝗘𝗔𝗗𝗬 𝗧𝗢 𝗕𝗨𝗜𝗟𝗗? Whether you are launching a new platform from scratch or scaling an existing system, I can help. Scroll up and click 𝗠𝗘𝗦𝗦𝗔𝗚𝗘 or 𝗠𝗘𝗘𝗧 to set up a free 15-minute discovery call. －－－－－－－－－－－－－－－－－－－－－－－－－－－－－ # Wordpress Next.js Supabase React.js Node.js Javascript Typescript Python Docker PostgreSQL REST API MongoDB Deno Bun AWS Vercel Azure GCP GitHub LLM Prompt AI Agent Chatbot LangChain CrewAI LangGraph AutoGen DeepSeek OpenAI Claude Gemini Mercury Vector Database RAG AI Chatbot Machine Learning ML MERN Data Analysis Data Science Dashboard fix bugs, debug website, migrate database, building and deploying applications Application Developer, in designing, coding, testing, and delivering high-quality applications modern development practices, cloud integration, and performance optimization optimize performance efficient scalable secure speed scalability security problem-solving skills scalable solutions responsive design cross-browser compatibility security best practices full-stack developer client-side server-side web applications user interface back-end systems front-end interfaces databases data storage third-party services front-end technologies back-end technologies version control systems cloud platforms DevOps tools continuous integration and deployment #

I've been working with technology since 1992 in both software development and network infrastructure positions. I started as a developer and have focused on building custom financial, inventory, and workflow software for employers and customers. I have also worked in technology infrastructure positions such as network and IT management. I built my first web server in 1995 and almost immediately built my first web program using a C language CGI program. Since then I have used almost every server-side web development platform: Perl and Python CGI, fast CGI, Zope, Django and Flask with Python, ASP.Net, Node.js, and most recently Deno. Client-side, I've used Javascript (since before it was popular), spent many years using JQuery, then Knockout.js. I have used many of the popular front-end environments today, primarily Angular and Vue.js. In addition to web-based work, I have developed a number of service applications for customers, normally Windows-based services in .Net. This has allowed me to leverage my knowledge of different databases and network environments to build custom-tailored solutions to fit many diverse needs. I have also done numerous large-scale document and data conversion projects for many document imaging systems. These involve careful planning, understanding and mapping data between systems, document format conversions, and meticulous record-keeping.