Open to opportunities

Hossein Khoshbayan

@hosseinkhoshbayan

Message

Experienced .NET developer delivering scalable enterprise back-end and cross-platform solutions.

Armenia

Message

What I'm looking for

I seek senior roles building scalable, cloud-enabled back-end and cross-platform systems where I can lead SDLC efforts, mentor teams, and deliver measurable business outcomes.

I am a seasoned .NET developer with over 12 years building scalable enterprise applications, APIs, and cloud-enabled solutions using C#, .NET Core, EF Core, and SQL Server. I lead full SDLC efforts and focus on performance, reliability, and maintainability.

I have led large teams and projects — including a CRM handling 45M+ records, a national housing platform with 300+ modules, and an immigration management system with 500+ APIs — consistently delivering on time and within budget. I embrace Clean Architecture, SOLID principles, CQRS, and automated testing.

I'm passionate about continuous learning, mentoring, and applying cloud and cross-platform technologies such as Azure and .NET MAUI to deliver measurable business value and improve user workflows.

Experience

Work history, roles, and key accomplishments

Current

Project Developer

Current

Freelance

Sep 2025 - Present (1 month)

Working as an independent .NET entrepreneur delivering scalable back-end services and cross-platform mobile apps with .NET MAUI and cloud-based deployments for clients in Yerevan.

C++.NET Core .NET MAUI Azure RESTful APIs SQL Server CI CD Microservices

Current

Project Developer

Current

Lotos Software Development

Oct 2022 - Present (3 years)

Led a 30+ person team to design and deliver a large-scale CRM on .NET Core, EF Core, and Blazor that handled 45M+ records and was completed on time and within budget.

C++.NET Core EF Core Blazor SQL Server Architecture Team Leadership DevOps

Senior Full-Stack Web Developer

Telesiness

Aug 2021 - Sep 2022 (1 year 1 month)

Built an immigration management system with 5 dashboards and 500+ APIs, improving API performance and ensuring high system reliability while preserving client confidentiality.

C++.NET Core RESTful APIs JavaScript Blazor Performance Optimization SQL Server Microservices

Back-End Developer

Housing Foundation

Jan 2016 - Mar 2022 (6 years 2 months)

Built a national housing services system with 300+ modules, led a 40-engineer team and implemented progress reporting and API enhancements to improve performance and security.

C++.NET Core SQL Server Team Leadership Reporting & Security Performance Optimization

Back-End Developer

Telecommunication Company

Jan 2016 - Mar 2022 (6 years 2 months)

Developed a telecom management platform with 60+ subsystems, collaborated within a 56-member team to enable real-time monitoring and improved customer service via electronic task management and API upgrades.

C++.NET API Development Real Time Systems System Integration Team Collaboration Performance Tuning SQL Server

Back-End Developer

Blood Transfusion Center

Jan 2018 - Dec 2021 (3 years 11 months)

Designed and implemented a national blood donation and management system with 80+ modules, led a 20+ developer team and improved clinical workflows and hospital distribution.

C++.NET Core SQL Server API Development Team Leadership Healthcare IT Testing Integration

Senior Back-End Developer

National Petroleum Products Distribution

Jan 2019 - Jul 2021 (2 years 6 months)

Developed a national-scale oil distribution platform spanning 140+ systems, designing optimized solutions to manage millions of data points across the supply chain.