Даніїл

Last updated in Aug 2026

Daniil Sidielnikov
 Ukraine  [open contact info](look above in the "contact info" section)  [open contact info](look above in the "contact info" section)  khajiitvaper2017

Summary
Software engineer with experience building desktop applications, automation tools and LLM-based utilities,
mainly using C#, Python and TypeScript. Worked on Windows applications, database-backed services, web
applications and data extraction tools. Open to remote full-time or part-time opportunities.

Education
Kremenchuk Mykhailo Ostrohradskyi National University Sept 2021 – June 2025
Bachelor’s Degree in Computer Science

Skills
Languages: C#, Python, TypeScript, C++, SQL, Java
.NET & Desktop: .NET, ASP.NET Core, WinForms, WPF, MVVM, Qt, Entity Framework Core, LINQ,
async/await, Dependency Injection
Web & Frontend: Blazor, Svelte / SvelteKit, TypeScript, Node.js, PWA, static web apps, HTML, CSS
APIs & Integrations: REST APIs, HTTP, JSON, OAuth 2.0, Google OAuth, Telegram API, Discord
Data: MySQL, SQLite, Microsoft SQL Server, Web scraping, Data extraction
Testing & Code Quality: Playwright, Jest, ESLint, Prettier
Tools & DevOps: Git, GitHub, CI/CD, Docker, Visual Studio, Visual Studio Code, Rider
LLM & AI Development: Local LLM integration, OpenAI API, OpenRouter, Ollama, prompt engineering,
prompt pipelines, agent utilities
AI Development Tools: OpenAI Codex, GitHub Copilot, Claude Code

Experience
C# Full Stack Developer Remote
Virtual Guard, USA Apr 2023 – Apr 2024
◦ Developed Windows desktop software, including an application for configuring and managing Dahua IP
cameras using the Dahua SDK and WinForms.
◦ Added Microsoft SQL support for storing camera information and an API for querying and updating
camera data.
◦ Tested and debugged the software across different camera models and firmware versions.
◦ Added features and fixed bugs based on project requirements.
AI / LLM Engineer Remote
Upwork June 2024 – Dec 2024
◦ Integrated local LLMs into client applications for image generation, text generation and chatbots.
◦ Helped clients set up and use local LLMs and provided guidance on prompt engineering.
Python Software Engineer Remote
Private Client Feb 2026 – June 2026
◦ Built bots and scrapers to collect and organize information from social networks.

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Projects
Telegram Channel Member Scraper with Multi-Format Export
Tool for extracting and exporting Telegram channel member data
◦ Built a Python tool to collect member data from Telegram channels and export it in multiple formats.
◦ Stack: Python, Telegram API / Telethon.
Neuradventure (Personal Project)
AI application for creating interactive branching narratives
◦ Built a web application for creating interactive branching narratives and managing multi-character chat
sessions.
◦ Added support for both local (KoboldCpp) and hosted (OpenRouter) LLMs, including streamed responses
and generated prompts.
◦ Created configurable story modules for managing context and token usage based on NPC states, memories
and character traits.
◦ Used browser storage and SQLite (sql.js) for data persistence.
◦ Stack: SvelteKit, Svelte 5, TypeScript, Tailwind CSS, shadcn-svelte, sql.js, Vite PWA.

Languages
English: Advanced (C1)
Ukrainian: Native
Russian: Native
Japanese: Upper-Intermediate (B2)
Spanish: Intermediate (B1)

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