Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Hasan Darwish. I’m a Senior Full Stack Developer with 5+ years of experience in building scalable system integrations, and enterprise solutions. I specialize in .NET (Core/8), Angular (14–18), REST APIs, RabbitMQ, MongoDB, and SQL Server, with a proven track record in payment gateways and medical device integration. I thrive in Agile environments, enjoy system design and mentoring developers, and love collaborating with product and business teams to deliver robust, scalable solutions.…Hi, I’m Hasan Darwish. I’m a Senior Full Stack Developer with 5+ years of experience in building scalable system integrations, and enterprise solutions. I specialize in .NET (Core/8), Angular (14–18), REST APIs, RabbitMQ, MongoDB, and SQL Server, with a proven track record in payment gateways and medical device integration. I thrive in Agile environments, enjoy system design and mentoring developers, and love collaborating with product and business teams to deliver robust, scalable solutions.

Hasan Darwish

Full Stack Developer, Web Developer, Back-End Developer, +2





Hi, I’m Hasan Darwish. I’m a Senior Full Stack Developer with 5+ years of experience in building scalable system integrations, and enterprise solutions. I specialize in .NET (Core/8), Angular (14–18), REST APIs, RabbitMQ, MongoDB, and SQL Server, with a proven track record in payment gateways and medical device integration. I thrive in Agile environments, enjoy system design and mentoring developers, and love collaborating with product and business teams to deliver robust, scalable solutions.…Hi, I’m Hasan Darwish. I’m a Senior Full Stack Developer with 5+ years of experience in building scalable system integrations, and enterprise solutions. I specialize in .NET (Core/8), Angular (14–18), REST APIs, RabbitMQ, MongoDB, and SQL Server, with a proven track record in payment gateways and medical device integration. I thrive in Agile environments, enjoy system design and mentoring developers, and love collaborating with product and business teams to deliver robust, scalable solutions.

Available to hire

Hi, I’m Hasan Darwish. I’m a Senior Full Stack Developer with 5+ years of experience in building scalable system integrations, and enterprise solutions. I specialize in .NET (Core/8), Angular (14–18), REST APIs, RabbitMQ, MongoDB, and SQL Server, with a proven track record in payment gateways and medical device integration.

I thrive in Agile environments, enjoy system design and mentoring developers, and love collaborating with product and business teams to deliver robust, scalable solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Arabic

Fluent

English

Advanced

Work Experience

Senior Full Stack Developer at Appenza

January 1, 2025 - Present

Designed and developed a Learning Path Management System serving scalable educational workflows. Implemented .NET 8, Angular 18, RabbitMQ, MongoDB, and SQL Server. Built asynchronous workflows and messaging pipelines to improve system performance and scalability. Collaborated with product and business teams during the early LMS product construction phase. Optimized a critical admin endpoint for Learning Paths, courses, and content, reducing response time from ~21 seconds to ~2 seconds by refactoring queries, eliminating unnecessary loops, and improving data access patterns.

Full Stack Developer at Nitco

July 1, 2023 - December 1, 2024

Developed and maintained a ticketing system using .NET and Angular 14. Integrated POS machines with the company ERP system. Implemented medical device integrations using ASTM protocol. Collaborated with cross-functional teams to ensure reliable system interoperability.

.NET Developer at AAIT

September 1, 2019 - March 1, 2023

Developed and maintained 10+ production systems using ASP.NET, .NET Core, Web API, SQL Server. Led integration of 10+ payment gateways including PayFort, STC Pay, and others. Implemented data access improvements and collaborated with QA and product teams to deliver stable releases.