Roshan R.

I help startups, scale-ups, and enterprises build high-performance SaaS platforms, AI-powered applications, marketplaces, and enterprise systems that are secure, scalable, and built for long-term growth. My core expertise is Go (Golang) backend architecture, distributed systems, microservices, API development, and cloud-native applications. I also deliver Angular and Flutter applications when projects require end-to-end ownership from architecture through deployment. I leverage modern AI technologies including OpenAI, Claude, Agentic Workflows, RAG (Retrieval-Augmented Generation), and MCP-based integrations to help businesses automate processes, improve user experiences, and unlock new revenue opportunities. 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱 ✔ High-Performance Go (Golang) Backends • REST APIs, gRPC services, WebSockets • Microservices and distributed systems • Event-driven architectures • High-concurrency applications • Third-party integrations and payment systems ✔ SaaS & Enterprise Platforms • Multi-tenant SaaS applications • Admin dashboards and reporting systems • ATS, CRM, ERP, and workflow platforms • Subscription and membership systems • Enterprise integrations and automation ✔ AI-Powered Applications • OpenAI and Claude integrations • RAG implementations • AI Agents and Agentic workflows • Document intelligence platforms • AI-assisted search and recommendation systems • Workflow automation and orchestration ✔ E-Commerce, Marketplaces & Booking Platforms Magento 2 custom development, extensions, and headless integrations Multi-vendor service marketplaces & vendor management systems Booking, scheduling, and resource allocation systems Complex payment processing, mark ✔ Marketplace & Booking Platforms • Service marketplaces • Vendor management systems • Booking and scheduling systems • Payment processing and escrow workflows • Customer and provider portals ✔ Web & Mobile Applications • Angular enterprise applications • Flutter cross-platform mobile apps • Responsive dashboards • Real-time applications • Progressive Web Apps (PWA) 𝗦𝗲𝗹𝗲𝗰𝘁𝗲𝗱 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 🏗 BuildGenie AI Built an AI-powered construction intelligence platform that helps contractors and builders navigate building codes, research compliance requirements, and streamline project planning workflows. 🎟 WorkingOnIt (WOI) Developed a multi-service marketplace platform supporting service bookings, subscriptions, event ticketing, customer-provider interactions, and integrated payment processing across web and mobile applications. 🎮 GamingsFinest Engineered a large-scale esports tournament platform featuring automated tournament brackets, Twitch and YouTube integrations, payment processing, rewards management, and community engagement features. 🎓 iTeachLive iTeachLive is a next-generation real-time virtual classroom ecosystem built to deliver ultra-low latency online tutoring. The platform features a highly customized Agora WebRTC video and audio engine seamlessly orchestrated by a high-performance Go (Golang) backend. It empowers educators with a real-time, pencil-annotated interactive whiteboard that supports instant drag-and-drop media integration directly from a secure session library. 🏢 Enterprise PropTech Platform Developed a comprehensive property management ecosystem connecting property owners, managers, tenants, and service providers through a unified web and mobile platform. 🏥 MedStripes Developing a comprehensive healthcare EMR/EHR platform for home healthcare, hospice, pediatrics, and post-acute care providers, featuring patient records management, physician portals, electronic visit verification (EVV), scheduling, e-prescriptions, clinical documentation, compliance workflows, billing, analytics, and care coordination tools. 🌐 Chatdit Developed and continue to maintain a large-scale social networking platform featuring public and private communities, user profiles, groups, pages, media sharing, real-time interactions, live streaming, content discovery, and social engagement workflows. 𝗖𝗼𝗿𝗲 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗦𝘁𝗮𝗰𝗸 Backend: Go (Golang), Gin, Fiber, REST APIs, gRPC, WebSockets Frontend & Mobile: Angular, Flutter, TypeScript, JavaScript, Tailwind CSS Databases: PostgreSQL, MariaDB, MySQL, Redis, MongoDB AI & Automation: OpenAI, Claude, LangGraph, RAG, AI Agents, MCP Integrations Cloud & DevOps: Docker, Kubernetes, CI/CD, Git, Linux, Nginx Architecture: Microservices, Event-Driven Systems, Clean Architecture, Domain-Driven Design (DDD), SOLID Principles Top Rated Plus Freelancer on Upwork ✔ 100% Job Success Score ✔ $200K+ in Successfully Delivered Projects ✔ 250+ Completed Projects ✔ 6,000+ Hours Worked on Upwork ✔ Proven Delivery Across AI, SaaS, Marketplace, Healthcare, EdTech, PropTech, and Enterprise Platforms If you're looking for a senior engineer who can architect, build, and scale complex software systems while incorporating modern AI capabilities where they create real business value, let's connect.