Available to hire
Hi, I’m Darko Subić, a Senior .NET Developer with over 10 years of experience creating scalable backend solutions and designing robust APIs. I enjoy mentoring development teams and working with modern DevOps practices to build reliable and maintainable software.
I’ve worked on a variety of projects, from upgrading legacy systems to building greenfield applications using the latest .NET technologies. My goal is always to deliver clean, efficient code that meets business needs and drives value.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Advanced
Croatian
Fluent
Work Experience
Senior .NET developer at Subs
July 31, 2025 - July 28, 2025Delivered new features on a .NET 8 / Angular enterprise app, enhancing user experience and business functionality. Improved internal developer tooling.
Senior .NET developer at Monri Payments
April 30, 2025 - July 28, 2025Led development of Greenfield .NET 8 APIs using Clean Architecture and Docker, reducing redundant features and services. Documented and refactored legacy system into a Modular Monolith architecture, improving maintainability and performance. Mentored 5 interns/junior/mid developers, fostering a culture of Clean Code and best practices.
Senior .NET developer at FFW
April 30, 2024 - July 28, 2025Successfully upgraded a Sitecore solution to latest version and refactored it, making the application more secure and maintainable. Built and led a small backend team to deliver the core infrastructure and major features for a Greenfield API initiative, working directly with business and technical stakeholders to define scope and direction. Independently took over a long-inactive project and drove it to completion. Performed maintenance on Sitecore projects for optimal performance. Introduced Docker to the team which boosted development speed by 15%.
Senior .NET developer at IOLAP
May 31, 2021 - July 28, 2025Migrated legacy .NET Framework product to the newest .NET Core 3.1 version, applying best practices and adding documentation, which made the product more maintainable and faster, reducing maintenance headcount by one developer. Conducted and compiled a thorough analysis for a client on international expansion requirements.
Sitecore Developer at ecx.io
September 30, 2020 - July 28, 2025Delivered Sitecore solutions for global clients including Brother, LKW Walter, and Fiskars. Developed Sitecore Templates and Items, enhanced processors, and expanded existing configurations for improved functionality. Introduced automated unit tests, improving project maintainability.
.NET developer at Tagit Adriatica d.o.o
March 31, 2018 - July 28, 2025Contributed to a Greenfield WPF medical project for item tracking within the hospital and operating room, reducing operation time by 30 minutes. Translated wireframes to XAML, created RFID reader driver, and incorporated synchronous and asynchronous RFID functions into WPF app. Enhanced WPF app performance and resolved critical memory leaks.
.NET developer at Rathmann
July 31, 2017 - July 28, 2025Contributed to enhancing the B2B solution with new features. Modernized AS-400 medical software into a WPF app for KBC Rijeka. Created a security app for Luka Rijeka.
Senior .NET developer at Subs
July 31, 2025 - July 28, 2025Delivered new features on a .NET 8 / Angular enterprise app, enhancing user experience and business functionality. Improved internal developer tooling.
Senior .NET developer at Monri Payments
April 30, 2025 - July 28, 2025Led development of Greenfield .NET 8 APIs using Clean Architecture and Docker, reducing redundant features and services. Documented and refactored legacy system into a Modular Monolith architecture, improving maintainability and performance. Mentored 5 interns/junior/mid developers, fostering a culture of Clean Code and best practices.
Senior .NET developer at FFW
April 30, 2024 - July 28, 2025Successfully upgraded a Sitecore solution to latest version and refactored it, making the application more secure and maintainable. Built and led a small backend team for a Greenfield API initiative, collaborating with business and technical stakeholders. Took over and completed a long-inactive project independently. Performed maintenance on Sitecore projects to optimize performance. Introduced Docker to boost development speed by 15%.
Senior .NET developer at IOLAP
May 31, 2021 - July 28, 2025Migrated legacy .NET Framework product to .NET Core 3.1 applying best practices with documentation, improving maintainability and performance while reducing maintenance workload. Conducted international expansion requirements analysis for a client.
Sitecore Developer at ecx.io
September 30, 2020 - July 28, 2025Delivered Sitecore solutions for global clients. Developed Sitecore templates and items, enhanced processors, improved configurations and introduced automated unit tests to improve maintainability.
.NET developer at Tagit Adriatica d.o.o
March 31, 2018 - July 28, 2025Contributed to a Greenfield WPF medical project that reduced operation room time by 30 minutes. Translated wireframes to XAML, created RFID reader driver, incorporated synchronous and asynchronous RFID functions, enhanced app performance, and resolved critical memory leaks.
.NET developer at Rathmann
July 31, 2017 - July 28, 2025Enhanced B2B solution with new features, modernized AS-400 medical software into WPF app for KBC Rijeka, and created a security app for Luka Rijeka.
Education
bacc. oec. at Ekonomski Fakultet Rijeka
September 1, 2005 - September 30, 2010bacc. oec. at Ekonomski Fakultet Rijeka
September 1, 2005 - September 30, 2010Qualifications
Umbraco Professional
September 1, 2022 - September 30, 2022Microsoft Certified Professional
October 1, 2016 - October 31, 2016Umbraco Professional
September 1, 2022 - September 30, 2022Microsoft Certified Professional
October 1, 2016 - October 31, 2016Industry Experience
Software & Internet, Financial Services, Healthcare, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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