Армен 

Armen Sarkisian
Backend C# .NET Developer
Living area: Ukraine, Drohobych
Date of birth: 18.06.1994
Email: [open contact info](look above in the "contact info" section)
Telegram: @naisikras

Summary
Backend .NET developer with hands-on experience building production backend systems, APIs,
and integrations. Focused on reliability, performance, and automation. Experienced in financial
workflows, messaging systems, and database optimization. Worked with ASP.NET Core, MS SQL,
RabbitMQ, and external integrations (Telegram.Bot API, Microsoft Graph, LiveAgent, OpenAI
GPT API).

Technical Skills
Backend
• C#, ASP.NET Core
• REST API
• Entity Framework Core
• MS SQL, PostgreSQL
• Quartz.NET
Messaging & Distributed Systems
• RabbitMQ
• MassTransit
• Message-based architecture (pub/sub, request/response)
• Retry policies, dead-letter queues
• Idempotent message processing (basic level)

Database & Performance
• SQL query optimization
• Index design and tuning
• Stored procedure optimization
 • Execution plan analysis (basic level)

Observability & DevOps
• Docker
• Grafana
• Prometheus (metrics integration: latency, error rate)
• Logging and error handling

Integrations
• Microsoft Graph API (mail monitoring, transport rules)
• Telegram Bot API
• LiveAgent (ticket creation, support workflows)
• OpenAI GPT API (AI-based integrations)

Frontend
• HTML, CSS, JavaScript, React (basic level)

Other
• Git
• NGrok
• Postman

Experience
Backend .NET Developer — FunExtreme Technology LLC (747ph.live project)
May 2025 – Apr 2026

• Developed backend for a payment aggregator platform (online casino domain): deposits,
withdrawals, balance tracking
• Built message-driven workflows using MassTransit and RabbitMQ (asynchronous
processing)
• Implemented retry policies and handled failed messages using dead-letter queues
• Worked with financial transaction flows and basic consistency handling
• Optimized EF Core usage: reduced N+1 queries, improved query structure
• Improved database performance: added indexes based on slow queries, optimized
stored procedures and joins
• Added system observability: integrated Prometheus metrics (latency, error rate), built
dashboards in Grafana
• Used Docker for local environment setup (API, database, message broker)
• Improved logging and error tracking for backend operations
 • Integrated OpenAI GPT API for AI-driven features (request handling, response
generation)

Backend .NET Developer — RocketUp (Timewise.com.ua project)
Feb 2025 – Apr 2025

• Developed backend services using ASP.NET Core
• Integrated Microsoft Graph API and Exchange Online
• Implemented email monitoring and transport rule management
• Worked with Microsoft Entra ID (Azure AD)

Backend .NET Developer — JobPlnr
Sep 2024 – Dec 2024

• Developed frontend features using React
• Fixed bugs and implemented UI changes based on requirements
• Gained experience working in a production environment

Full-stack ASP.NET MVC Developer — SunRose
Oct 2021 – Jul 2023

• Maintained and extended legacy ASP.NET MVC application
• Implemented PayPal payment integration
• Developed REST API integration to CheckBox.ua
• Prepared and deployed releases

Education
National Metallurgical Academy of Ukraine (Dnipro)

• Material Science and Metal Processing
• Graduated: 2016

Languages
• Ukrainian — Native
• Russian — Fluent
• English — Intermediate
• German — Basic
• Armenian — Basic
Notes
• Focused on backend engineering and system reliability
• Interested in building scalable systems and SaaS products
• Continuously improving knowledge of distributed systems and performance optimization