Максим

Maksym Paliy
.NET Developer — Full-Stack & AI / LLM Integration
Lviv, Ukraine · [open contact info](look above in the "contact info" section) · github.com/Msk3123 · LinkedIn
SUMMARY
.NET developer who builds and ships full-stack web applications end-to-end on ASP.NET Core (.NET 8/9) — API and data
layer, React frontend, Docker delivery. I design with Clean / layered architecture over EF Core and MongoDB, and I care about
production hardening — auth, rate limiting, input sanitization and secrets management (I rewrote a live website's backend to
remove its vulnerabilities). Recent focus: integrating LLMs with Microsoft.Extensions.AI using function / tool calling and
guardrails. I like owning a feature from idea to deployment and explaining technical decisions to non-technical stakeholders.
TECHNICAL SKILLS
Languages: C#, SQL, JavaScript / TypeScript, HTML, CSS, Python
Backend & APIs: ASP.NET Core (Web API & MVC), .NET 8/9, EF Core, ASP.NET Identity, REST API design, Clean
Architecture, Repository / Unit of Work, DI, AutoMapper, FluentValidation
AI / LLM: Microsoft.Extensions.AI, function / tool calling, prompt design & guardrails, local inference (Ollama / Llama 3.1)
Security & Reliability: JWT & API-key auth (constant-time), rate limiting, XSS sanitization, SSRF-safe HTTP, secrets via
user-secrets, global error handling (ProblemDetails), health checks
Data & Storage: PostgreSQL, MySQL, MS SQL Server, MongoDB, MinIO / S3
DevOps & Tools: Docker, Docker Compose, Git / GitHub, Swagger / OpenAPI, Google Cloud (Cloud SQL), Postman, Rider,
Visual Studio
Frontend: React, TypeScript, Vite, Bootstrap
PROJECTS
TaroSideAI — full-stack AI web app (.NET 9, Clean Architecture)Msk3123/taroSide
•​ Designed a 4-layer Clean Architecture backend (Domain / Application / Infrastructure / API) with a React + TypeScript
single-page frontend.
•​ Integrated an LLM via Microsoft.Extensions.AI with function / tool calling: the model must call a DrawTarotCards tool that
reads real data from PostgreSQL, which removes hallucinated output; added system-prompt guardrails that block medical,
financial and fatalistic advice.
•​ Built authentication with ASP.NET Identity + JWT, modeled the schema in EF Core (PostgreSQL) with migrations and
seeding, and documented the API in Swagger.
Tech: .NET 9 · ASP.NET Core · EF Core · PostgreSQL · ASP.NET Identity · JWT · Microsoft.Extensions.AI · Ollama / Llama 3.1 ·
React · TypeScript
BEST Lviv — Website Backend — live production .NET 8 API + security rewritebest-lviv.org.ua
•​ Rewrote the backend of a live organization website (real users) into a layered .NET 8 API (Controllers / Services /
Repositories / Infrastructure) on MongoDB, with content synced from Notion and media in MinIO (S3-compatible storage).
•​ Hardened it for production: API-key auth with constant-time comparison, per-IP rate limiting, HTML sanitization (anti-XSS),
an SSRF-safe image fetcher, strict CORS, secrets in user-secrets, and global exception handling (ProblemDetails).
Tech: .NET 8 · ASP.NET Core · MongoDB · MinIO (S3) · Notion API · Rate limiting · HtmlSanitizer · Swagger
Hotel Booking System — layered ASP.NET Core MVC appgithub.com/Msk3123/HostelSite
•​ Layered ASP.NET Core MVC app (Domain / Application / Infrastructure) with Razor views and an admin panel for full
CRUD over hotels, rooms and bookings; role-based access via ASP.NET Identity (Admin / Client).
•​ Repository + Unit of Work and AutoMapper over EF Core (MySQL); fully containerized with Docker Compose, migrations
applied automatically on startup, database hosted on Google Cloud SQL.
Tech: .NET 9 · ASP.NET Core MVC · EF Core · MySQL · ASP.NET Identity · AutoMapper · Docker / Docker Compose · Google Cloud
SQL
CompanyEmployees API — REST Web APIgithub.com/Msk3123/CsWebAPi
•​ Multi-project REST API (API / Contracts / Entities / Repository / LoggerService) with full CRUD, DTOs + AutoMapper, a
repository abstraction, global exception-handling middleware and structured logging (NLog).
Tech: .NET 9 · ASP.NET Core Web API · EF Core · MS SQL Server · AutoMapper · NLog
LEADERSHIP & COMMUNICATION
•​ BEST Lviv (international student organization) — Corporate Relations at the Engineering Job Fair: pitched the event to
companies and coordinated partners, translating technical value to non-technical decision-makers. Also HR (team of 11, 6
months) and CTF event logistics.
EDUCATION
Lviv Polytechnic National University2023 – 2027
BSc, Computer Engineering — Institute of Computer Technologies, Automation and Metrology.
LANGUAGES
Ukrainian — native · English — Intermediate (B1)