Skip to content
vynride.dev

~/whoami

Vivian

Vivian Demello

AI Engineer

X (Twitter)GitHub

~/about

❯Name: Vivian Demello

❯Age: ...

❯Occupation: AI Engineer

❯Hobbies: Hackathons, Competitive Programming, Self Hosting

❯CV: resume

~/tech-stack

❯Languages:
PythonPythonTypeScriptTypeScriptGoGoC++C++BashBash
❯Libraries & Frameworks:
Next.jsNext.jsReactReactFastAPIFastAPITailwindCSSTailwindCSS
❯DevOps:
AWSAWSAzureAzureGCPGCPDockerDockerGitHub ActionsGitHub ActionsJenkinsJenkinsNginxNginx
❯Tooling:
GitGitLinuxLinuxNeovimNeovimtmuxtmux

~/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

~/projects

❯Redline: Real-Time Voice Crisis-Communication Trainer

Next.jsNext.jsFastAPIFastAPIWebSocketsWebSocketsSarvamSarvamPostgreSQLPostgreSQLDockerDocker
  • –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.jsNext.jsFastAPIFastAPICeleryCeleryGeminiGeminiDockerDocker
  • –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

ReactReactFastAPIFastAPIGeminiGeminiCloudflare Workers AICloudflare Workers AIMongoDBMongoDB
  • –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 for building a website-to-RAG chatbot with FireCrawl and Qdrant
  • –Reached the semi-finals among 3000+ at the 100xEngineers GenAI Buildathon for Executive AI, an agent that automates Google Workspace and research tasks via Gemini tool-calling
  • –Finalist at HackByte 3.0 (Wikipedia Track), IIITDM Jabalpur
  • –Finished 5th of 200+ teams at SITnovate 2025 for an AI document summarizer that extracts and condenses key information from lengthy documents and exports to multiple formats

❯Competitive Programming

  • –Ranked 3rd at Geek ICPC 2.0, RBU
  • –2-Star on CodeChef with a max rating of 1550, having solved 300+ DSA problems

❯Leadership

  • –Technical Co-Lead at The CodeBreakers Club, RCOEM, mentoring juniors on DSA, system design, and AI/ML