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Fehmi Küçükçınar | Portfolio

Fehmi Küçükçınar

Hi, I’m
Fehmi Küçükçınar

Lead Software Engineer

About Me

I am a highly-skilled software development professional with over 15 years of experience in the full software development lifecycle. I have a strong background as a Lead Software Engineer and am seeking a Senior .NET/Java Developer position.

My expertise lies in building enterprise-level web applications using .NET Framework, Entity Framework/EF Core, and I have advanced knowledge of C#, ASP.NET, .NET Core, JavaScript, MS SQL Server, Angular, and Oracle. I also have experience with Microservices, Docker, RabbitMQ, and Vue.

Education

  • B.Sc. in Computer Engineering, Karadeniz Technical University – 2004

Experience

Software Engineer – Thredd

November 2021 – September 2025

  • Developed and maintained a Visa & Mastercard transaction processing system, handling millions of secure transactions daily.
  • Optimized MS SQL Server stored procedures, resulting in a 30% improvement in query performance.
  • Implemented logging and monitoring with ELK Stack and Grafana, reducing issue resolution time by 40%.
  • Technologies: Asp.Net 4.8, .Net Core 8, Python, GRpc, MsSQL Server, RabbitMQ, Docker, ELK Stack, Serilog, Specflow, Grafana, Prometheus, OpenTelemetry, Bitbucket, Git, Jira

Lead Software Engineer – Teba Tech

March 2020 – November 2021

  • Developed a customer financial transaction and project management system using a Microservices architecture.
  • Utilized GitLab and Azure DevOps for CI/CD pipelines, reducing deployment time by 40%.
  • Integrated Docker and RabbitMQ to increase system resilience and scalability.
  • Technologies: .Net Core 5, Microservices, Entity Framework Core, Docker, HangFire, MsSQL Server, Vue, RabbitMQ, Git, Azure Devops

Lead Software Engineer – RK Soft

March 2018 – March 2020

  • Led the development of several enterprise-level web and GIS applications.
  • Key projects included a mortgage management system (e-Tesis) and a GIS-based workforce management system.
  • Technologies: .NET Core, ASP.NET 4.5/ MVC, Angular 7, jQuery, Ajax, Bootstrap, Razor, PostgreSQL, MSSQL Server 2017, Oracle 11g, FastReport, Subversion, Redmine

Software Engineer – Turkish Treasury

July 2009 – July 2017

  • Contributed to critical projects like the Demand Management System and Online Exam Application System.
  • Streamlined processes for over 1,500 employees, improving data accessibility and automating workflows.
  • Technologies: ASP.NET MVC & Web Forms, Fluent NHibernate, Razor, jQuery, Ajax, Bootstrap, Telerik Kendo UI, MS Reporting, Business Objects

Software Specialist – Ministry of Foreign Affairs

January 2008 – June 2009

  • Developed an Inventory Tracking System to monitor and manage institutional fixtures.
  • Built using Visual Studio 2005, Web Forms, and Oracle 8 database.
  • Improved asset tracking and reporting efficiency across the organization.
  • Technologies: ASP.NET MVC & Web Forms, jQuery, Ajax, MSSQL Server

Software Specialist – TEİAŞ

April 2006 – December 2007

  • Contributed to the MFRC Balancing and Settlement Management Project.
  • Developed using Java (JSP, Servlet) on IBM WebSphere (WSAD).
  • Designed and optimized Oracle 8 database structures and implemented Jasper Reports for regulatory reporting.
  • Technologies: Java (J2EE, Jsp, Servlet), Hibernate, IBM Websphere, Javascript, Oracle, Jasper Reports

Software Specialist – Docuart

March 2004 – March 2005

  • Developed the Human Resources Module of the İlbank ERP system.
  • Built using Java (J2EE, JSP, Servlet, Struts, Hibernate) on Apache Tomcat.
  • Automated HR processes, improving efficiency and reporting capabilities.
  • Technologies: Java (Struts), Hibernate, Tomcat, Javascript, Oracle, Jasper Reports

Projects

Payment Gateway Transaction Processing System

Developed at Thredd

A high-performance Visa & Mastercard transaction processing system handling millions of secure transactions daily, with optimized database procedures and robust monitoring.

Financial & Project Management System

Developed at Teba Tech

A microservices-based system for financial transactions and project management, featuring CI/CD pipelines and Docker/RabbitMQ integration.

e-Tesis – Mortgage & Lien Management

Developed at RK Soft

A web application for the management of mortgages and liens built with .NET Core, Entity Framework Core, and Angular 7.

Field Workforce Management System

Developed at RK Soft

A GIS-based tablet and web application for field data collection and management, using ASP.NET 4.5 and Angular.

Demand Management System

Developed at Turkish Treasury

A comprehensive demand management system that automated and streamlined the processes for over 1,500 employees.

Online Exam Application System

Developed at Turkish Treasury

An online application system that automated the exam registration and management process.

Inventory Tracking System

Developed at Ministry of Foreign Affairs

A system to monitor and manage institutional fixtures, built with Visual Studio 2005 and an Oracle 8 database, improving asset tracking and reporting.

MFRC Balancing and Settlement Management

Developed at TEİAŞ

A project for the Market Financial Settlement Center, supporting compliance with Final Balancing Settlement Regulations, developed with Java on IBM WebSphere.

Human Resources Module for İlbank ERP

Developed at Docuart

An HR module for the İlbank ERP system, built with Java and automating HR processes to improve efficiency and reporting.

Skills

Languages

C#, Java, Python, TypeScript

Frameworks

.NET Core, ASP.NET, Angular, Vue, EF Core, Spring Boot

Databases

MS SQL Server, Oracle, PostgreSQL

CI/CD & DevOps

GitLab, Azure DevOps, Docker, Jenkins, Bitbucket

Cloud & Tools

AWS, Azure, ELK Stack, Grafana, Prometheus, RabbitMQ, JIRA

© 2025 Fehmi Küçükçınar. All rights reserved.