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I help startups and growing businesses build scalable SaaS platforms using Ruby on Rails. From MVP to production-scale systems, I design and develop secure, high-performance web applications with clean architecture and long-term maintainability in mind. If you're building a subscription-based product or need to scale an existing Rails application, I can help you turn it into a stable revenue engine.

$100M+ in Client Revenue | Expert-Vetted (Top 1% Upwork) | 240+ Projects | 100% Job Success | 10+ Years on Upwork I’m a Full Stack Developer, SaaS Developer and Backend Developer focused on building production-ready software that holds up under real-world usage. My work sits at the intersection of software developer, web developer, and SaaS platform builder, with a strong backend-first mindset and deep attention to scalability, performance, and long-term maintainability. As a Full Stack Developer, I take ownership of systems end-to-end, pairing robust backend architecture with clean, modern interfaces. My frontend work is typically React-based and I often collaborate with or replace traditional React developer or web developer setups by owning both frontend and backend in a single, coherent system. While I’ve previously worked as a WordPress developer and integrated WordPress-based sites into custom platforms, my current focus is on custom SaaS and API-driven systems rather than CMS-centric builds. As a SaaS Developer, I help companies design, build and scale SaaS products, internal tools and API-driven web applications intended for long-term use. My experience as both a Backend Developer and software developer allows me to think beyond features and focus on architecture, reliability and operational stability from day one. Many of the platforms I build support internal teams, customer dashboards and multi-role workflows where permissions, data integrity and business rules are critical. In my day-to-day work as a Backend Developer, I design and implement backend services, APIs and data models that power SaaS platforms, complex web applications and mobile-connected systems. I regularly work with Node.js and Python, drawing on my background as a Python developer to build scalable services, background jobs and asynchronous workflows that perform reliably in production. As a Full Stack Developer, I ensure these backend systems integrate cleanly with frontend applications, mobile extensions and third-party APIs. When required, I support frontend and mobile app developer workflows using React and React Native. This end-to-end ownership is a key reason clients bring me in as a Full Stack Developer rather than splitting work across multiple roles. A significant portion of my work as a SaaS Developer and Backend Developer involves building internal platforms, dashboards and API-first systems that integrate external services. In these projects, I often collaborate closely with product, growth, or analytics teams, including teams focused on SaaS marketing by designing clean data pipelines, event tracking and backend logic that supports experimentation, reporting and lifecycle insights. When projects require AI-powered functionality, I bring hands-on experience integrating AI into backend systems. While my primary role remains Full Stack Developer and Backend Developer, I regularly implement AI-enabled workflows, data processing pipelines and LLM-driven features inside SaaS platforms. This allows me, as a SaaS Developer, to deliver AI functionality that is reliable, observable and cost-controlled rather than experimental. Clients typically work with me when they need: - a Full Stack Developer who can own frontend and backend - a SaaS Developer who understands long-term scalability constraints - a Backend Developer experienced with real production systems - mobile app developer and React developer experience as a software developer - backend services built with Node.js or Python by an experienced Python developer - web applications with complex workflows and business rules from a senior web developer - API-driven architectures and third-party integrations - SaaS platforms designed to support growth, analytics and SaaS marketing data needs - MVPs that can realistically evolve into long-term SaaS products A large part of my work as a Full Stack Developer, SaaS Developer and Backend Developer focuses on: - multi-role dashboards and internal tools - authentication, authorization and permissions - API-first backend system design - integrations with external platforms, including legacy CMS or WordPress-based systems when required My core work as a Backend Developer and Full Stack Developer covers: - backend services built with Node.js and Python - APIs, background jobs and integrations - databases such as PostgreSQL - modern stacks using tools like Supabase - AI-enabled backend features where they add real business value I regularly work on MVP builds and early-stage products as a SaaS Developer, with strong focus on solid backend foundations, sensible scaling paths and avoiding short-lived prototypes. Based on scope and timing, I work hands-on as a Full Stack Developer, SaaS Developer and Backend Developer and when useful, involve specialists from my team. Long-term results come from clarity and intentional system design. I focus on delivering software that teams can confidently run, maintain and scale.

Hi, I’m Vlad, a Senior PHP Backend Developer with 12+ years of experience building scalable backend systems, integrating complex APIs, and delivering reliable software for startups and established businesses. I specialize in developing robust backend solutions, integrating payment gateways, and improving existing applications. Whether you need to build a new product, modernize a legacy PHP application, integrate third-party services, or solve a challenging backend issue, I can help. During my career, I’ve worked on SaaS platforms, payment systems, subscription billing, marketplace solutions, and business automation tools. I’ve integrated Stripe (including Stripe Connect), payment gateways, OAuth authentication, accounting platforms, and numerous third-party APIs while focusing on security, performance, and maintainability. Services - Custom PHP & Laravel development - REST API development & third-party integrations - Payment gateway integrations (Stripe, Stripe Connect, Mollie, PayPal and others) - Subscription & billing systems - OAuth, JWT & authentication - Database architecture & optimization (MySQL) - Performance optimization - Legacy PHP modernization - Docker & cloud deployments - Bug fixing & backend troubleshooting Why clients hire me • 10+ years of commercial PHP experience • Clean, maintainable and scalable code • Strong focus on performance and security • Fast understanding of existing codebases • Clear communication and reliable delivery • Long-term thinking instead of quick fixes I’m comfortable joining projects at any stage—from building a product from scratch to improving large, long-running applications with complex business logic. I enjoy solving difficult backend problems and delivering solutions that are reliable, scalable, and easy to maintain. If you’re looking for a senior backend developer who can quickly understand your project and become a dependable technical partner, I’d be happy to discuss how I can help.

I am an experienced Go Software Engineer with 9 years of industry experience, mainly working on Backend Development and scalable architecture/cloud-native solutions. My competence is in creating fast, high-performance applications using Golang and integrating modern technologies such as Docker, Kubernetes, and AWS into systems that scale effortlessly. I excel in the following skills: - Backend Development: Developing Microservices, APIs (RESTful, GraphQL, gRPC), and database-driven applications. - Cloud Technologies: Design reliable and cost-efficient infrastructure deployments on AWS, GCP, Azure or other cloud platforms. - High Load & Scalability: Architecting systems for millions of users and data points without a single hitch. - DevOps Integration: The main goal is to provide smooth pipelines of CI/CD by automating deployments with Terraform, Docker, and Kubernetes. - Blockchain & Smart Contracts: Developing decentralized solutions with Go, Solidity, Rust, and Ethereum. Key Highlights : - Delivered cloud processing solution for industrial IoT devices, enhancing system performance by 20,000%. - Successfully designed and deployed a complex management platform for a transportation system, highly appreciated by clients due to its reliability and speed. - Single-handedly delivered mobile advertising network with throughput capabilities of 1300 RPS. - Experience working with cross-functional remote teams to deliver under tight deadlines. Why Hire Me? I bring a wealth of experience in technology working for your business needs and understanding the exact translation of your needs and problems into solutions. My proactive communication and dedication to quality help me bring value to every project. Let’s build something amazing! 🛠️🚀 Last updated 09-04-2026

I build AI-powered SaaS platforms that go beyond basic CRUD apps—intelligent systems that learn, automate, and scale. From brand protection algorithms to personalized coaching engines, I specialize in turning complex AI capabilities into products people actually use. Over 15 years of full-stack development, including time on the Joomla! core team, I've learned that the hard part isn't the AI—it's making it reliable, fast, and valuable to real users. I architect solutions that combine cutting-edge ML with rock-solid engineering. Recent AI-powered projects: Brand protection SaaS — Built an AI system that automatically detects and removes counterfeit brand listings across platforms, processing thousands of violations monthly with machine learning improving accuracy over time AI personal growth coaching app — Developed an intelligent coaching platform that analyzes user interests and delivers personalized growth advice, using ML models to adapt recommendations based on user behavior and progress Automated music platform — Created a smart distribution system for the world's top DJs with AI-driven workflows, role-based automations, and intelligent release scheduling that cut manual processes by 70%+ I specialize in: Integrating AI/ML into production SaaS products (OpenAI, custom models, RAG systems) Building intelligent automation that replaces manual workflows Personalization engines that adapt to user behavior Computer vision and content moderation systems Scalable architectures that handle AI processing at volume React/Next.js frontends for complex AI-powered features Nodejs/Python backends optimized for heavy workloads Tech stack: Nodejs, Python, React, GraphQL, Next.js, OpenAI APIs, TensorFlow/PyTorch, LangChain, Vector DBs, PostgreSQL, Supabase, Prisma, Redis, AWS, Docker I turn AI concepts into products that work reliably in production. Whether you're adding intelligence to an existing platform or building something entirely new, I bridge the gap between ML possibility and business value.

I build full-stack web applications, ERP systems, dashboards, admin platforms, and automation tools for businesses that need reliable internal software. My main stack includes Next.js, React, TypeScript, Node.js, SQL Server, PostgreSQL, Docker, Nginx, Azure/VPS infrastructure, REST APIs, and AI-assisted workflow automation. I can help with: - ERP and internal business applications - Admin dashboards and data-heavy interfaces - Dynamic forms, layout builders, and configurable workflows - Multi-tenant database infrastructures - SQL-backed applications and database design - API development and third-party integrations - Deployment, server setup, Docker, Nginx, and DevOps workflows - AI-assisted document, quoting, and business-process automation My background also includes industrial automation and engineering systems, which helps me understand complex real-world operations and turn them into practical, maintainable software. If you need someone who can work across frontend, backend, database, infrastructure, and business logic, I can help you design and build the full system.