Кирило

Kyrylo Ozmitel
Full-Stack Developer (.NET / React / Cloud)

[open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section) • github.com/ozmitelll

PROFESSIONAL SUMMARY

Full-Stack Developer with 3+ years of commercial experience building scalable business platforms, REST
APIs, SaaS systems, crypto exchanges, CRM/HR platforms, and real-time applications. Strong focus on
ASP.NET Core, backend architecture, database optimization, and production-ready systems. Experienced
with legacy codebases, Clean Architecture, cloud deployments, CI/CD pipelines, and full-stack development
using React/Next.js. Comfortable working independently or inside existing enterprise systems.

TECHNICAL SKILLS

Backend C#, ASP.NET Core (.NET 5–8), EF Core, Minimal APIs, SignalR, FastAPI, Node.js, NestJS
Frontend React, Next.js, TypeScript, TailwindCSS, Redux/RTK, Expo (React Native)
Databases PostgreSQL, MySQL, Redis, MongoDB, ElasticSearch
Architecture Event-Driven Architecture, Hexagonal Architecture, DDD, Clean Architecture, CQRS, Back-
ground Jobs
Cloud & DevOps Azure, GCP, DigitalOcean, Docker, Docker Compose, Nginx, CI/CD
Tools Kafka, Debezium, Azure Service Bus, Git, MediatR, FluentValidation, Stripe, LiqPay,
Firebase

COMMERCIAL EXPERIENCE

Founder & Full-Stack Developer Aivio • May 2024 – Present
• Built and maintain a SaaS marketplace product card generator.
• Designed ASP.NET Core 8 backend using Clean Architecture, CQRS, MediatR, FluentValidation, PostgreSQL.
• Implemented JWT authentication with refresh tokens and scalable API design.
• Developed React + TypeScript frontend using Vite, Zustand, TanStack Query, and shadcn/ui.

Full-Stack Developer DevStack UA • Dec 2023 – Apr 2024
• Built HR/recruitment platform using ASP.NET Core 8, PostgreSQL, Redis, React, and TypeScript.
• Implemented candidate workflow management and notification systems.
• Integrated CV parsing services and real-time updates.
• Worked with Minimal APIs and modern .NET 8 patterns in production.

Backend Developer Softcord • Jul 2023 – Nov 2023
• Extended reporting module for logistics-focused B2B SaaS platform.
• Built Hangfire background job system for scheduled PDF report generation.
• Implemented email and webhook notification services.
• Added role-scoped access for regional managers and optimized PostgreSQL queries.

Full-Stack Developer M&V • Apr 2022 – Jun 2023
• Worked on production crypto exchange platform using ASP.NET Core 7, React, MySQL, Redis.
• Joined existing codebase and optimized legacy EF Core queries (800ms → ~120ms).
• Implemented MetaMask support and RBAC-based authorization.
• Added Redis-backed JWT token revocation and improved transaction throughput by ~15%.

Full-Stack Developer EYWA • Sep 2021 – Mar 2022
• Built trading endpoints and wallet integrations for crypto exchange MVP.
• Implemented SignalR real-time currency updates and optimized API performance.
• Worked with ASP.NET Core 6, MySQL, Redis, and React frontend.

Full-Stack Developer SEOK • Jan 2021 – Aug 2021
• Developed e-commerce platform for jewelry retail brand.
• Implemented product catalog, checkout flow, promo logic, ElasticSearch, and Redis caching.
• Designed secure JWT-based authentication and optimized backend APIs.

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EDUCATION

Bachelor’s Degree in Computer Science MITIT • 2020 – 2024

LANGUAGES

English — B2 • Ukrainian — Native

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