~/whoami

Vivian Demello

AI Engineer

~/about

❯Name: Vivian Demello

❯Age: ...

❯Occupation: AI Engineer

❯Hobbies: Hackathons, Competitive Programming, Self Hosting

❯CV: resume

~/tech-stack

❯Languages:

Python

TypeScript

C++

Bash

❯Libraries & Frameworks:

Next.js

FastAPI

TailwindCSS

❯DevOps:

AWS

Docker

GitHub Actions

Nginx

❯Tooling:

Git

Linux

Neovim

tmux

❯Languages:

Python

TypeScript

C++

Bash

❯Libraries & Frameworks:

Next.js

FastAPI

TailwindCSS

❯DevOps:

AWS

Docker

GitHub Actions

Nginx

❯Tooling:

Git

Linux

Neovim

tmux

~/socials

❯GitHub: github.com/vynride

❯X/Twitter: x.com/vynride

❯LinkedIn: linkedin.com/in/viviandemello

❯Email: vynride[at]gmail.com

~/experience

❯Software Engineer Intern · Sozo Labs

Mar 2026 – Present

–Cut LLM input cost ~10× on the highest-volume chat path via Gemini explicit context caching with a static-core / dynamic-tail prompt split, validated by a live API spike serving 99.8% of the prompt from cache
–Shipped a version-gated home-dashboard A/B experiment (FastAPI + Flutter) to ~2,600 users, lifting trial-to-activation conversion by +8%
–Classified all 163K users by life-topic with an embedding-based classifier, sharding a ~13h job to ~1h via crc32 partitioning; built a Metabase cohort dashboard surfacing a ~50× conversion gap between engaged and non-engaged users
–Migrated the platform end-to-end from DigitalOcean to AWS (ECS, EC2, S3, CloudFront) and CI/CD from GitHub Actions to Jenkins, with Bash-scripted VPS deployments

❯DevOps & Backend Intern · AI LifeBOT

Oct 2025 – Mar 2026

–Containerized and deployed 15+ AI and full-stack microservices on Azure Container Apps with Docker and Kubernetes, enabling zero-downtime rollouts
–Led a zero-downtime migration to a self-hosted VPS (Docker Compose + Nginx Proxy), cutting infrastructure costs by 15%
–Instrumented Prometheus and Grafana with SLO alerting, sustaining over 99% availability across the fleet

❯AI Engineering Intern · Techmonkey, UAE

Oct 2025 – Dec 2025

–Built a production RAG pipeline (LangChain + ChromaDB, 1.2K+ docs) that lifted answer relevance by 38%
–Added cross-encoder reranking and HyDE query rewriting to raise top-3 precision from 0.61 to 0.84
–Streamed responses token-by-token over SSE to cut time-to-first-token by 40%, with a Next.js frontend scoring 98 on Lighthouse

❯Full Stack Developer (Contract) · AIArm

Nov 2025 – Dec 2025

–Designed and built the Cards20 landing page, a command-center-styled marketing site for an autonomous field-sales agent platform
–Built an interactive simulation where users deploy and configure the platform's agent units (routing, calling, pitching, and objective analysis) over a sample field-sales mission
–Shipped the responsive Next.js frontend on Vercel with an animated command-center UI and per-unit context persisted across the simulation

~/projects

❯Redline: Real-Time Voice Crisis-Communication Trainer

Next.js

FastAPI

WebSockets

Sarvam

PostgreSQL

Docker

–Turn-based WebSocket loop streaming mic audio through Saaras STT → Sarvam LLM → Bulbul TTS, with live severity & escalation state on the same socket
–Branching persona behavior driven by JSON-schema structured LLM outputs across 20+ scenarios
–Coaching pass scores each transcript on five dimensions; shipped on PostgreSQL + Docker Compose + nginx with OAuth

❯RecallAI: AI-Powered Question Paper Analyzer

Next.js

FastAPI

Celery

Gemini

Docker

–Async multimodal pipeline (PyMuPDF → OCR → Gemini → WeasyPrint) ingesting exam PDFs via FastAPI + Celery
–Streams live job status to the browser over Redis-backed SSE
–Per-user AES-encrypted keys behind a JWT proxy + Auth.js OAuth; 500+ users within 4 days of launch

❯NanoCraft: AI-Powered DIY Learning Guide

React

FastAPI

Gemini

Cloudflare Workers AI

MongoDB

–Turns any DIY guide URL into a structured step-by-step visual walkthrough via Gemini structured-output prompts
–Generates per-step scene images with Cloudflare Workers AI through async background jobs persisted to MongoDB GridFS
–Context-aware chatbot grounded in scraped project data answers material and step questions

~/achievements

❯Hackathons

–MLH Vultr Track Winner at Hackprix '26
–Placed 3rd of 400+ teams at Technex 2025
–Semi-finalist among 3000+ at the 100xEngineers GenAI Buildathon
–Finalist at HackByte 3.0 (Wikipedia Track), IIITDM Jabalpur
–Finished 5th of 200+ teams at SITnovate 2025

❯Competitive Programming

–Ranked 3rd at Geek ICPC 2.0, RBU
–2★ on CodeChef (max 1550), 300+ DSA problems solved

❯Leadership

–Technical Co-Lead at The CodeBreakers Club, RCOEM