DAX KENJI
Tellez Duran
Backend systems, web products, and applied AI with Node.js, C#, and Python.
I build APIs, backoffices and web products with Node.js, TypeScript and C#/.NET. I also bring applied AI into real workflows: RAG, OCR, Redis, Webhooks and cloud services.
Production-minded AI and backend work
Curated projects with clear systems thinking: banking AI, RAG, OCR, on-chain analytics and shipped web products.
Current focus
Designing a unified RAG platform for automatic indexing and multi-agent orchestration.
Built in banking, data and production teams
Hands-on backend and AI work across RAG, OCR, secure APIs, dashboards and operational workflows.
Technical Analyst — AI Team
Hola S.R.L. · BCP de Bolivia S.A.- Built production AI backoffice services with Node.js and C# .NET 8.
- Implemented Token Saver System: crawler + RAG + Redis, reducing LLM token consumption up to 80%.
- Evaluated AWS, Azure and GCP OCR platforms for a critical banking identity workflow.
- Designed async Webhook pipelines and JWT/OAuth integrations under banking security standards.
Internship — Data Analyst & QA
Tigo Bolivia · Tigo Money- Python automation → scraping and automatic data cleaning saving 5h/week.
- Tableau/Power BI dashboards for KPIs → 30% improvement in operational visibility.
- QA on payment gateway + ETL process optimization.
- Scrum implementation → faster delivery cycles and progress visibility.
IT Support Technician
UTEPSA · Centro Tecnológico Educativo- Hardware/software diagnosis and repair on lab equipment.
- Institutional email support + LMS (Moodle) — 30+ daily requests from students and staff.
- Process documentation and user guides → reduced repeat support tickets.
Backend depth with applied AI judgment
The tools I use to move from prototype to maintainable production systems.
Backend & APIs
- Node.js / Express / NestJS
- TypeScript / Javascript
- C# (.NET 8) / ASP.NET Core
- PostgreSQL / MongoDB / Redis
AI & Machine Learning
- LLM Inference (OpenAI, Gemini)
- RAG Orchestration (Pinecone / Chroma)
- Semantic Prompt Compression
- LangChain / LlamaIndex / Agents
Cloud & DevOps
- GCP (Google Cloud Platform)
- Docker / Containers
- CI/CD (GitHub Actions)
- Serverless Architecture
Frontend & Web3
- Astro / React / Next.js
- HTML5 / CSS3 / Vanilla JS
- Solidity / Smart Contracts
- Ethers.js / Web3 Integrations
Results in international competition
DEV3PACK Hackathon
#89 Worldwide · #4 BoliviaRanked in the global top 100 out of 3,500+ teams across 40+ countries. Built SuchaTech in 48h — Solana + ElevenLabs voice AI.
DoraHacks Stellar Latam
Hackathon BuilderBuilt TrustArk — on-chain NFT certification for educational credentials on Stellar. Backend Lead.
DoraHacks Cardano Latam
Hackathon BuilderBuilt Enaid — sovereign digital identity with on-chain reputation on Cardano. Smart contracts in Plutus/Haskell, team of 3.
Where I am and where I'm going
[SOLID IN PRODUCTION]
- Node.js
- TypeScript
- C# .NET 8
- RAG + Redis
- LLM Optimization
- OCR Pipelines
- Webhooks Async
- Solidity
- Web3
[NEXT FRONTIER]
- Cloud Architecture
- Kubernetes
- DevOps / CI-CD
- AWS Solutions
- Infrastructure as Code
- System Design @ Scale
Active in the local dev ecosystem
ComunidadETH Bolivia
Helping expand the Ethereum and blockchain ecosystem in Bolivia through events, technical education, and mentorship.
YAIS Lab
Active research and practical implementation of AI models and advanced LLM engineering workflows.
GDG Santa Cruz
Co-organizing and sharing technical knowledge in web development, AI, and software engineering best practices.