Viacheslav V.

Fractional CTO | Full-Stack SaaS & AI Automation Expert | US-Based

Top 3% on Upwork. Fractional CTO and Solution Architect helping startups and growing businesses launch SaaS products, fix stalled development, and automate operations at scale. 100+ products delivered | Companies we supported raised $14.5B+. US-based (San Francisco), full US-hours overlap. Expert in React, Node.js, Python, API integrations, workflow automation, and SaaS architecture. Clients bring me in when they need to: Launch a Web or Mobile MVP quickly, without technical guesswork Fix slow, disorganized, or stalled development Design scalable SaaS or marketplace architecture Automate business workflows, integrations, or operations Get hands-on technical leadership without a full-time CTO hire I work with my team at Softermii, we build through APEX, our internal delivery system that validates product scope, architecture, and technical risk before heavy development starts. It structures the roadmap, breaks features into clear engineering tasks, and cuts costly rework, meaning faster launches and predictable timelines, without sacrificing code quality. What I Can Help You Build ✔ SaaS Platforms & Web Applications (React, TypeScript, Node.js) ✔ Marketplace & Multi-Role Platforms ✔ Mobile Apps (iOS, Android, React Native) ✔ Business Process & Workflow Automation ✔ API Development & Third-Party Integrations (Stripe, CRM, ERP) ✔ Fractional CTO / Technical Leadership for Startups Core Technologies Web & Backend: JavaScript, TypeScript, React, Node.js, Python, .NET, REST APIs Automation & Integration: API Integration, Workflow Automation, Stripe, Third-Party Systems Mobile: iOS, Android, React Native Architecture: SaaS Architecture, Marketplace Systems, Multi-Tenant Platforms Industries SaaS • FinTech • Healthcare • Real Estate • E-commerce Client Feedback "I would highly recommend Softermii for any programming needs. I am consistently impressed by the quality of the work and team effort brought forth by everyone that we've worked with." — VP of Product, Dollar Shave Club "Softermii delivered the project on time and helped us launch a strong virtual platform that can compete with major solutions in the market." — Director General, Event10x When Clients Hire Me You need a Fractional CTO to lead development, US-based and US-hours available You want to launch a SaaS or Web/Mobile MVP quickly Your current dev team is too slow or disorganized You need business processes or integrations automated You want scalable architecture designed right the first time Services: Web & Software Development — Full-stack development · Web application development · Custom software development · SaaS development · MVP and product development · Legacy platform modernization · Systems integration · Internal tools and admin panels · CRM and ERP builds AI Development — AI integration · AI agents · LLM integration (OpenAI, Claude) · RAG (Retrieval-Augmented Generation) · AI chatbots and voice agents · Document AI · Prompt engineering · AI-powered workflows · Machine learning Automation — Workflow and business process automation · n8n · Zapier · Make .com · GoHighLevel · CRM automation · Data extraction and web scraping · Onboarding automation · Reporting automation Websites & E-Commerce — WordPress development · WooCommerce · Shopify · Webflow · Squarespace · Wix · Framer · Web design · Website redesign and migration · Landing pages · Product configurators · Page speed and Core Web Vitals · SEO-friendly builds Mobile — React Native · iOS and Android apps · Expo · Capacitor · Mobile UI development Design — UI/UX design · Figma · SaaS dashboards · Wireframing and prototyping · Conversion rate optimization Stack — React · Next.js · Node.js · Python · Django · FastAPI · TypeScript · JavaScript · PHP · HTML · CSS · Tailwind · REST APIs · GraphQL · PostgreSQL · MySQL · MongoDB · Supabase Payments & Integrations — Stripe · Stripe Connect · PayPal · Plaid · Twilio · payment gateway integration · third-party API integration · webhooks Cloud & DevOps — AWS · Google Cloud · Microsoft Azure · Vercel · Docker · Terraform · CI/CD · infrastructure as code · monitoring and observability · hosting migration · scalability and performance If you're building or scaling a SaaS platform, marketplace, or need hands-on technical leadership, let's talk.