DAX KENJI
Tellez Duran
Data systems, web products, and applied AI.
I turn scattered data into reports and models a team can actually decide with: Python, SQL, advanced Excel and Power BI. I also build the systems behind them — APIs, RAG, OCR and cloud services with Node.js and C#/.NET.
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
AI integrations & WhatsApp funnel (n8n + WABA) at CoolFix · AWS AI Practitioner sprint before Community Day Bolivia (29 Aug 2026).
Built in banking, data and production teams
Hands-on backend and AI work across RAG, OCR, secure APIs, dashboards and operational workflows.
AI Developer / AI Integrations
CoolFix Ethical Service- Building WhatsApp commercial automation (n8n + Meta WABA): quote → schedule → confirm flows.
- Integrating AI/NLP into lead capture and operational workflows with human escalation.
- Shipping webhook, template and wait-pattern integrations for production messaging.
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.
Data analysis with production engineering behind it
The tools I use to turn scattered data into decisions — and to keep the systems behind them running.
Data & Analytics
- Python / pandas / NumPy
- SQL / analytical queries
- Advanced Excel (pivot tables, Power Query)
- ETL, data cleaning and validation
Visualization & Statistics
- Power BI / Tableau
- Dashboards and KPI definition
- EDA, correlations, outliers
- scikit-learn / cross-validation
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
AI Research Tour — Track 06 Continual Learning in prep. Practical AI research and LLM engineering workflows.
Cursor Buildathon Bolivia
Staff at the first Cursor Buildathon Bolivia (UTEPSA, 25–26 Jul 2026): 100 builders, 24h, Data and Agents tracks.
GDG Santa Cruz
Co-organizing and sharing technical knowledge in web development, AI, and software engineering best practices.