Abdul Mutlib

Software Engineer

Avanza Solutions • Fulltime

Sep 2025 - Present • 1 yr 1 mo

**Avanza Solutions – FinTech, ATM & Transaction Integration** I help financial technology teams build and integrate **reliable transaction-processing solutions** across ATMs, middleware, payment networks and core banking systems. **What I Help Deliver:** • **ATM transaction processing** through Nimbus ATM Controller, supporting reliable financial transaction workflows • **Middleware connectivity** through RDV, enabling communication between different financial systems • **REST API integrations** using C# and C++, connecting applications and services efficiently • **1LINK integration** for financial transaction processing and network communication • **ISO 8583 messaging** for structured and reliable exchange of financial transaction data • **TCP/IP-based communication** for dependable connectivity between transaction-processing systems • Integration with **Core Banking Systems and external financial services** • Troubleshooting transaction failures, communication issues and integration problems • Improving the reliability, maintainability and scalability of existing fintech systems • Supporting production environments and resolving issues affecting transaction workflows **Business Value:** My experience helps clients connect complex financial systems, improve transaction reliability, simplify system integration and create a stronger foundation for **secure, scalable and maintainable fintech solutions**. **Core Expertise:** C#, C++, .NET, REST APIs, ATM Systems, Middleware, 1LINK, ISO 8583, TCP/IP, Core Banking Integration, Transaction Processing and Financial System Integration.

.NET Developer

Riayatech • Fulltime

Nov 2024 - Sep 2025 • 10 mos

**RiayaTech – Healthcare Application Modernization** At RiayaTech, I worked with a development team to modernize a healthcare application and prepare it for future growth and integrations. **What We Delivered:** • Migrated an existing **ASP.NET MVC healthcare application to .NET 8 / ASP.NET Core** • Introduced a dedicated **REST API layer** into the existing architecture • Made the application more **scalable, maintainable and integration-ready** • Enabled easier connectivity with external systems, mobile applications and third-party services • Refactored legacy components while preserving existing healthcare workflows and business rules • Improved application performance, reliability and code maintainability • Worked with **C#, .NET 8, ASP.NET Core Web API, Entity Framework and SQL Server** • Troubleshot existing issues and enhanced application functionality based on business requirements **Client Value:** The modernization created a stronger technical foundation for the healthcare platform, making it easier to **extend features, integrate new systems, maintain the application and support future business growth**. This experience allows me to help clients modernize legacy .NET applications without unnecessarily disrupting their existing business processes.

.NET Developer

IAG Soft • Fulltime

Nov 2022 - Nov 2024 • 2 yrs

**.NET Developer | Business Software & Custom Solutions** I help businesses turn their ideas and operational needs into reliable, user-friendly software solutions. With professional experience at IAGSoft, I specialize in developing and maintaining custom **.NET, ASP.NET MVC, Web API, and C# applications**. **What I can help you with:** • Custom business & enterprise applications • ERP, POS, inventory, sales & accounting systems • REST API development & third-party integrations • Microsoft SQL Server database solutions • Desktop applications and Windows-based software • Crystal Reports, invoices & business reporting • Bug fixing, troubleshooting & performance optimization • Existing application improvements and maintenance • Data-driven web applications and responsive interfaces **Technologies:** C#, .NET, ASP.NET MVC, Web API, Entity Framework, SQL Server, JavaScript, jQuery, HTML, CSS, Bootstrap & Crystal Reports. My focus is on delivering **clean, practical, scalable solutions that solve real business problems and make your processes more efficient.**