Yoel Mountanus Sitorus

Founder – Youdo Coffee (Startup Project) on October 2024 - Co-founded and managed a small coffee business with 2 partners, overseeing operations, R&D, and digital strategy. - Built workflow systems using Trello for task management and Google AppScript for automated analytics. - Applied LLMs for social media content generation, marketing copy, and idea brainstorming. - Analyzed sales and customer data to optimize product development and marketing campaigns.

This project is a web tool for translating song lyrics line by line while preserving the original context to produce high-quality lyric translations. This project was created to help the church's multimedia team prepare lyrics more quickly. Capable to translate between Indonesian to English and Any to Indonesian. It also includes several other useful features: - Automatic Search: Find lyrics using an integrated Brave Search API or by manually inputting a lyric website link. - Reliable Scraping: Lyrics are scraped from reliable websites, and an AI is used to detect the lyric location, which reduces AI hallucination and excessive scraping. - Editable Lyrics: You can edit the scraped lyrics before translation. - Automatic Cleaning: The tool automatically cleans repeated lyrics to maximize AI translator potential. - Context-Aware Translation: Before translating, the AI first determines the song lyric's style. This helps ensure the translation maintains the original mood, preventing it from sounding overly dramatic or too simplistic. - Refine Lyric: You can refine arleady generated lyric translation with AI

Preserve Batak ancestral lineage and support tradition - Platform & UI: Built with Firebase Studio (Auth, Hosting, Cloud Functions); interactive multi-generation tree with search, zoom, and mobile-friendly interface. - Community contributions: Users can submit entries; submissions pass curator moderation and provenance/version tracking. - Manual curation workflows with basic duplicate detection and validation to keep lineage accurate. - Analytics dashboard for engagement; collaborated with community stakeholders; AI used only for brainstorming/idea generation (no AI data management).

A website for Personal Thesis that contains informations about sawit

A Surabaya-based music accessories shop offering quality gear, and fast local delivery for musicians and hobbyists. — Handled operations, marketing, and creative. - Managed product catalog, stocking, restock workflows, and basic finance/fulfillment. - Marketing & creative: Designed logo, ran Shopee ads, produced product videos (LLM-brainstormed concepts → implemented). - Content & automation: Used LLMs to generate product descriptions and marketing copy to scale listings. - Impact & tools: Optimized listings/ads and achieved Shopee Star Seller within 2 months; stack: Shopee, LLMs, basic analytics, content production.

Featuring multiple LLM agents with distinct personalities that interact, manage per-agent memory, and conditionally participate to keep conversations relevant. - Platform & architecture: Built with Firebase Studio (Auth, Hosting, Cloud Functions); orchestrates multiple LLM agents as independent services. - Agent behavior: Each agent has a defined personality and decision logic — agents can interact with one another or choose to stay silent based on conversation context. - Memory & control: Per-agent memory management and pruning to maintain context; rules determine when the chat should end if no agent finds the topic engaging. - UX & ops: Conversational UI that surfaces agent roles, conversation transcripts, and moderation controls; focused on relevance, safety, and lightweight deployment.