Curriculum vitae
Sandeep Verma — React & React Native Developer
Results-driven React.js Developer with 4.5+ years of expertise building scalable, high-performance web and mobile applications. Proficient in modern frontend architecture, reusable component design, and seamless REST API integration. Experienced working on AI-powered SaaS products, leveraging ChatGPT, Claude Code AI, and OpenAI APIs to accelerate development and deliver smarter user experiences. Passionate about clean UI, performance, and shipping products that make a real business impact.
- Led frontend development for UltimaBot — a production AI SaaS chatbot platform used by agencies, SMBs, and enterprises worldwide (ultimabot.ai).
- Built the no-code chatbot builder, multi-channel campaign UI (email, voice, chat), and embeddable widget SDK using React.js, Chakra UI, Redux, and Redux Thunk.
- Integrated OpenAI streaming responses, Vapi voice AI, Firebase auth, Socket.io, and Zapier webhook flows into a cohesive user interface.
- Designed reusable component systems, managed complex async state flows, and worked closely with backend teams on REST API integration.
- Leveraged Claude Code AI and ChatGPT to accelerate feature development, code reviews, and debugging workflows.
- Developed interactive, responsive UIs using React.js, HTML, CSS, and JavaScript aligned with Figma wireframes and mockups.
- Integrated front-end components with backend REST APIs; collaborated cross-functionally to troubleshoot and resolve UI/UX issues.
- Contributed to building mobile-friendly web applications with strong cross-browser performance.
- Built responsive interfaces adapting seamlessly across desktops, tablets, and mobile devices.
- Translated Figma designs to pixel-perfect, interactive UI components with dynamic animations and smooth UX flows.
Led the complete React.js frontend for ultimabot.ai — a multi-channel AI SaaS platform enabling businesses to deploy intelligent chatbots, run automated email and voice outreach campaigns, capture leads, and integrate with 1,000+ apps. Built the no-code chatbot builder, campaign management dashboard, AI voice assistant UI, and embeddable chat widget SDK. Integrated real-time OpenAI streaming, Vapi voice AI, Firebase, and Google Calendar booking flows using React.js, Chakra UI, Redux, and Redux Thunk.
End-to-end CRM with lead management, customer segmentation, sales automation, and analytics. Automated workflows improved lead conversion by 90%. Designed scalable, customizable modules for evolving business needs.
Web and mobile expense management system with a structured three-step approval workflow across Employees, HODs, HR, and Management. Ensures policy compliance while reducing administrative overhead.
Gym supplements & fitness gear e-commerce store with product browsing, cart, and checkout. Focused on mobile performance and conversion UI.
Real estate platform connecting buyers, sellers, and renters with a wide listing range and simplified property search.