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Liam LeviLL

Liam Levi

Full-Stack Dev | Next.js, Node.js, RAG, LLM | SaaS

€347/day
McKinney, US
3-7 years

Average response time: 1 hour

About Liam

🚀 Hi there! I’m a Full-Stack AI Engineer specializing in building secure and scalable SaaS platforms powered by Large Language Models and Retrieval-Augmented Generation. I help startups turn complex requirements into secure, production-ready web applications using React, Next.js, Node.js Supabase, and AI-driven backend systems built for reliability and scale.

💡 My focus is on building AI-powered SaaS platforms and MVPs that combine clean UI, fast performance, and intelligent automation while respecting data sensitivity and regulatory standards. I design systems where don’t just click buttons, they interact with AI-driven features such as intelligent search, document understanding, summarization, conversational interfaces, and real-time insights powered by LLMs. Every solution I deliver is built with security, maintainability, auditability, and future growth in mind.

⚡ What I Do Best
- Architect full-stack web applications using React, Next.js, Node.js, and Supabase
- Design and implement LLM-powered features for operational workflows
- Build Retrieval-Augmented Generation pipelines for documents and knowledge bases
- Integrate Pinecone for secure semantic search, embeddings, and contextual memory
- Develop AI-driven chat, search, and automation tools
- Implement Speech-to-Text and Text-to-Speech for voice-enabled healthcare workflows
- Create clean, accessible, and responsive UI using Tailwind CSS
- Build secure REST APIs and backend services with role-based access control

💻 Core Tech Stack
- Frontend: React, Next.js, Tailwind CSS
- Backend: Python, Node.js, Express, REST APIs
- No Code / Low Code: Lovable, Replit, Bubble, Cursor, Bolt, V0.dev
- AI & LLMs: OpenAI API, Large Language Models, LangChain
- RAG Systems: Vector Databases, Pinecone, embeddings, semantic search
- Voice AI: AI Speech-to-Text, AI Text-to-Speech
- Deployment: Vercel, environment-based configurations

✨ Let’s build something intelligent, secure, scalable, and impactful for together. ✨🔥
  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Successive Digital
    Full-Stack SaaS Developer
    E-COMMERCE
    June 2021 - October 2025 (4 years and 4 months)
    Coppell, United States
    I worked on compliance-focused SaaS platforms for startups, owning features end-to-end from planning to production.
    I built full-stack systems using React/Next.js on the frontend and Node.js with PostgreSQL on the backend, creating secure REST APIs for dashboards, reporting, and data workflows.
    Authentication and access control were handled with JWT, OAuth, and role-based permissions.
    I developed secure document management systems, PDF export dashboards, analytics reporting, and integrated LLM based automation features for workflows and knowledge retrieval.
    Deployment and CI/ CD were managed across AWS, Vercel, and Supabase, with a focus on performance, scalability, clean architecture, and strong collaboration with UI/ UX designers.
    Next.js Node.js PostgreSQL LLM Supabase
  • eMarspro Inc.
    Full-Stack Developer
    HEALTH AND WELLNESS
    April 2018 - February 2021 (2 years and 10 months)
    Grand Prairie, United States
    I built web based business apps and MVPs, handling both frontend and backend. Frontend features in React with Tailwind CSS, making them look good and
    responsive.
    Backend with Node.js and Express, integrating databases like PostgreSQL, Firebase, MongoDB for storing data.
    Authentication flows for different roles, that took some time to get right. Consuming RESTful APIs and optimizing them for the frontend, assisted with
    testing and debugging to fix performance issues.
    Working with designers again to keep UI user friendly, and contributing to stability, maintainability over time.
    It feels like a lot of overlap between the two, repeating some skills but in different contexts.
    Some people might say one was more intense than the other, I think the SaaS side had tighter deadlines.
    Node.js React.js MVP SAAS Express

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Education

  • Bachelor of Science in Information Technology
    Texas State Technical College
    2017

Skill set

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