Vladimir M.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Have an MVP idea but need someone who can turn it into a reliable product? I’m a Senior Full-Stack Developer with 8+ years of experience building SaaS platforms, MVPs, marketplaces, internal systems, and AI-powered applications. I help founders and product teams move from an idea or specification to a production-ready product with clean architecture, reliable backend logic, intuitive interfaces, and infrastructure that can grow with the business. 𝐖𝐇𝐀𝐓 𝐈 𝐂𝐀𝐍 𝐇𝐄𝐋𝐏 𝐘𝐎𝐔 𝐁𝐔𝐈𝐋𝐃 • SaaS and multi-tenant platforms • MVPs from idea to production • B2B and B2C web applications • Marketplaces and booking platforms • AI-powered products and automation • Admin panels and internal tools • REST APIs and third-party integrations • Payment and subscription systems • Legacy application modernization • High-performance Ruby on Rails applications I’m comfortable owning the full development cycle: architecture, database design, backend, frontend, integrations, testing, deployment, and ongoing product development. 𝐌𝐘 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄 Over the past 8+ years, I have: • Delivered and launched 25+ Ruby on Rails web applications • Improved application performance, including projects where page-load times were reduced by up to 42% • Worked on complex legacy-system migrations and architecture improvements • Built scalable APIs, background-processing systems, integrations, dashboards, and SaaS functionality • Worked with authentication, role-based access, payments, subscriptions, notifications, search, file storage, and complex business workflows • Built and integrated AI functionality using LLMs, RAG, AI agents, document processing, classification, summarization, and automation workflows 𝐀𝐈 + 𝐏𝐑𝐎𝐃𝐔𝐂𝐓 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 AI should solve a real product or operational problem, not simply be added as a chatbot. I can help with: • LLM integrations • RAG and knowledge bases • AI agents and agentic workflows • Natural-language search • Document extraction and summarization • AI-powered classification • Workflow automation • AI actions through APIs • Prompt and token-cost optimization • Error handling, monitoring, and production safeguards 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 Backend: Ruby on Rails, Ruby, Node.js, NestJS, REST APIs, background jobs, Sidekiq Frontend: React, Next.js, JavaScript, TypeScript, Tailwind CSS, HTML/CSS Databases: PostgreSQL, MySQL, Redis, SQLite AI: OpenAI, Anthropic, LLM pipelines, RAG, vector databases, AI agents, MCP Infrastructure & Tools: AWS, Vercel, GitHub, CI/CD, Docker, Stripe, Supabase, Git Testing & Quality: RSpec, automated testing, code reviews, static analysis, performance optimization 𝐇𝐎𝐖 𝐈 𝐖𝐎𝐑𝐊 I don’t approach MVP development as “build everything as quickly as possible.” The goal is to identify what actually needs to be in V1, design the architecture so it doesn’t become a problem three months later, and get a useful product into users’ hands quickly. Depending on the project, I can work independently as a senior developer or bring in additional specialists from my team at Gotoinc — including QA, UI/UX, solution architecture, project management, and additional engineering expertise. That gives you one technical point of contact without needing to coordinate several unrelated freelancers. 𝐂𝐎𝐋𝐋𝐀𝐁𝐎𝐑𝐀𝐓𝐈𝐎𝐍 I work with: • Early-stage founders building their first MVP • SaaS companies expanding an existing product • Teams that need a senior engineer to take ownership of a feature or technical area • Companies modernizing legacy applications • Businesses introducing AI and automation into existing workflows You can hire me for a defined project or for ongoing product development. 🟢 If you’re building an MVP, SaaS product, AI application, or improving an existing platform, send me an invitation. Share your idea, specification, or current technical challenge and we can have a short call to discuss the architecture, priorities, risks, and the fastest practical path to launch. Last updated: September, 2026