Roman K.
Web3 SaaS Ecosystem for AI Agents, Decentralized Platform for Deploying and Monetizing AI Agents
Experience
Nov 2024 - Apr 2025
6 monthsWeb3 SaaS Ecosystem for AI Agents, Decentralized Platform for Deploying and Monetizing AI Agents
IBM Zesh AI
- Architected Zesh AI, a Web3 platform enabling decentralized AI agent creation and monetization.
- Developed modular agents for analytics, retrieval-augmented generation techniques, KOL analysis, and fraud detection using LangChain and Solidity.
- Built dashboards for predictive modeling, token-based rewards (ZAI), DAO governance, and multi-platform agent deployment (Telegram, X, Discord).
Jul 2024 - Oct 2024
4 monthsAI-Powered Tarot Reading SaaS, Multilingual AI Tarot Platform with Conversational Agents
Tarotap
- Built AI-driven tarot modules for personalized divination using LangChain, OpenAI API, and Python.
- Designed conversational UI with emotion-based insights, interactive card selection, and voice/text interactions.
- Delivered a GDPR-compliant multilingual scaling across multiple regions.
Feb 2024 - Apr 2025
1 year 3 monthsArmonk, United States
Senior AI & SaaS Architect
IBM
- Led architecture and development of AI-native SaaS platforms serving enterprise teams across legal, healthcare, and finance verticals.
- Designed multi-agent LLM systems using LangChain, LangGraph, LangSmith, and OpenAI GPT-4 for dynamic knowledge workflows, document intelligence, and AI copilots.
- Developed modular SaaS architecture using Next.js, NestJS, and Vercel, deployed globally via AWS Lambda with high-availability CI/CD.
- Proficient in AWS, PostgreSQL, Vercel, vector databases, and delivering secure, HIPAA-compliant applications.
- Implemented advanced RAG pipelines with Pinecone, Chroma, and LlamaIndex, enhancing document recall by over 60% across large enterprise datasets.
- Integrated Stripe for metered billing, access tiers, and invoice automation; built real-time analytics and usage dashboards with D3.js and Supabase.
- Collaborated directly with product managers, AI researchers, and cloud engineers across 5+ international time zones, delivering quarterly product expansions.
Feb 2024 - Jun 2024
5 monthsAI-Enabled SaaS Boilerplate Generator, Developer-First SaaS Tool for Next.js Applications
Shipixen
- Contributed to an AI-driven platform generating production-ready Next.js boilerplates.
- Integrated OpenAI API for automated content generation.
- Developed customizable UI systems with Shadcn UI and Tailwind.
- Implemented Vercel one-click deployment with SEO optimization and modular design components.
Jun 2023 - Dec 2023
7 monthsReal-Time AI Voice Changer, AI-Powered SaaS for Games & Streaming Optimization
EaseUS VoiceWave
- Developed real-time AI voice manipulation features supporting Discord, Zoom, and OBS.
- Engineered low-latency voice modulation and integrated 300+ AI voice presets.
- Built audio tools such as noise reducer, recorder, and mixer.
- Collaborated on AI voice generation (TTS) and multilingual UX for gaming environments.
Apr 2021 - Oct 2023
2 years 7 monthsVancouver, Canada
Lead Mobile & Blockchain Engineer
CryptoBlock.Domains
- Led development of a cross-platform mobile SaaS platform using React Native, Expo, and Firebase, enabling over 100K users to track vitals, receive diagnostics, and interact with care providers.
- Integrated OpenAI GPT-4, LangChain, and custom vector models to power intelligent care plan generators, multilingual triage bots, and AI-driven patient history summarization.
- Architected secure, HIPAA-compliant mobile infrastructure with NestJS, Node.js, OAuth2, including encrypted data flows, session token handling, and audit-ready logging systems.
- Implemented SMART on FHIR APIs, HL7 connectors, and full EMR/EHR integration for real-time health data sync.
- Designed provider dashboards and WebSocket-powered chat UIs with OneSignal-based push alerts, real-time vitals charts, and patient triage prioritization.
- Introduced Web3-enabled features such as tokenized health ID systems, private wallet auth, and patient-owned data sharing via Solidity-based smart contracts on Polygon testnets.
- Piloted blockchain-based audit trails using IPFS and Ethereum, enabling traceable, tamper-proof clinical records and AI decision logs.
- Built offline support with SQLite, biometric login, and role-based multilingual UIs optimized for field clinics and global distribution.
Mar 2020 - Nov 2020
9 monthsGenerative AI & Multi-Agent Systems — SaaS Platform Connecting Servicers and Institutional Buyers
B2B Loan Marketplace Platform
- Developed a nationwide SaaS platform connecting loan servicers and institutional investors for asset transactions.
- Built valuation and bidding systems with Laravel and MySQL, integrated XL Value Engine for instant property estimates.
- Implemented Vue.js interfaces for buy/sell workflows with responsive design.
- Ensured secure CRM integration, asset filtering, knowledge graphs, document intelligence, and AI SEO.
Jul 2019 - Mar 2021
1 year 9 monthsMiami, United States
Full Stack SaaS Engineer
Social Snowball
- Delivered over a dozen full-stack MVPs for early-stage startups in AI, health, edtech, and fintech, building scalable SaaS platforms and mobile apps using React Native, Next.js, and NestJS.
- Designed microservice-based backend systems using Node.js, PostgreSQL, and Firebase, supporting real-time features, analytics pipelines, and user role management.
Summary
Senior Full Stack & AI Engineer with 9 years of experience in building scalable SaaS products, AI systems, and Web3 platforms across web and mobile.
Expertise in multi-agent systems with LLMs (GPT-4, Claude, etc.), LangChain, RAG, and front-end/mobile technologies like Next.js, React, and React Native.
Skilled in backend development with JavaScript, TypeScript, Python, and Node.js, experienced in integrating Web3 solutions, blockchain, and smart contracts.
Proficient in AWS, Vercel, vector databases, and delivering secure, high-availability CI/CD.
Proven track record in collaborating with startups to modernize legacy systems and ensure long-term product success.
Languages
English
ElementarySpanish
ElementaryEducation
Sep 2014 - Jun 2018
Polytechnic University of Valencia
Bachelor of Applied Science · Computer Science · Valencia, Spain
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