Yurii

YURII YATSKO
Senior Software Engineer | Applied AI & LLM Applications
[open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)

Software engineer with 9+ years shipping production applications. Builds AI backends, offline RAG, and MCP
integrations with Python, TypeScript / JavaScript, and Kotlin.
APPLIED AI PROJECTS
Cocopix Backend | Python / FastAPI / fal.ai
- Built an asynchronous AI photo-processing pipeline: image uploads, template-based generation, Taskiq background
jobs, and model-result webhooks.
- Integrated fal.ai inference, PostgreSQL / SQLAlchemy, Dragonfly / Redis, and Cloudflare R2 / S3 storage for processing
jobs and image files.
NoteMind | Kotlin / On-device AI / RAG
- Built an Android journal with on-device summarization, task extraction, auto-tags, semantic search, and RAG using
LiteRT-LM and MediaPipe Text Embedder.
- Implemented incremental indexing, source references, context truncation, and empty-retrieval handling with Compose,
Room, and Hilt.
Trello MCP | Node.js / Model Context Protocol
- Built an MCP server exposing 47 tools for boards, cards, comments, and checklists, connecting AI assistants to the
Trello REST API through the MCP SDK over stdio.
English Worksheet Bot | Node.js / OpenAI API
- Built a Telegram bot converting 5 user inputs into English exercises and answer-key PDFs via OpenAI API and
Puppeteer, with malformed-JSON error handling.

TECHNICAL SKILLS
AI / LLM: RAG, embeddings, semantic search, MCP, OpenAI API, fal.ai, LiteRT-LM, MediaPipe Text Embedder
Languages: Python, TypeScript, JavaScript / Node.js, Kotlin, Java
Backend & data: FastAPI, NestJS, PostgreSQL, SQLAlchemy, Taskiq, Redis, REST APIs, WebSockets, R2 / S3
Web & mobile: React, Yjs / CRDT, Hocuspocus, Android, Jetpack Compose, Room, Hilt, Coroutines / Flow
Testing & delivery: pytest, node:test, Docker / Docker Compose, Fly.io, Git, CI/CD
ADDITIONAL ENGINEERING PROJECT
Lyra Board | TypeScript / React / NestJS
- Built a collaborative whiteboard with real-time synchronization using Yjs / CRDT and Hocuspocus, shared cursors,
sticky notes, shapes, connectors, and link-based access.

PROFESSIONAL EXPERIENCE
Evacorp | Android Engineer / Jul 2022 - Present
- Shipped features for utility apps including a flagship with 10M+ downloads; built shared libraries adopted across
multiple apps and integrated VPN functionality with libv2ray.
MyPly | Android Engineer / Jun 2021 - Jul 2022
- Sole Android engineer; shipped customer and staff delivery apps with real-time location tracking and Android Auto.
WorkLab | Android Engineer / Jan 2020 - Jun 2021
- Built both Android apps end-to-end for a construction marketplace connecting contractors with workers.
Deliverest | Android Engineer / Aug 2018 - Jan 2020
- Built white-label food-delivery apps for 50+ restaurants with reusable, client-configurable architecture.
PettersonApps | Android Engineer / Sep 2016 - Jun 2018
- Delivered fintech, education, and IoT apps; achieved 100% test coverage on a banking app, measured with JaCoCo.

EDUCATION
MSc, Computer and Information Systems Security
Uzhhorod National University, Ukraine | 2014 - 2019