Mardy Abdelkareem

Senior .NET Backend Developer and Certified Optimizely CMS Developer with 8+ years of experience building scalable web applications and integrations. Strong expertise in ASP.NET Core, Web APIs, and CMS-driven solutions (Optimizely, Sitecore, Umbraco). Recently certified in Optimizely Opal (Tools and Administrator). Experienced in delivering high-quality solutions in Agile environments and working with distributed teams.

Senior Backend Engineer / Optimizely - First Line Software - Remote

(2023-10)

• Designing and developing scalable features for Optimizely CMS, focusing on performance and user experience.
• Contributed to migration projects from CMS 11 to CMS 12, ensuring smooth transitions and modernized architecture.
• Successfully merged multiple websites into a unified codebase and database, improving maintainability and system coherence.
• Integrated Optimizely with DAM systems and facilitated database migrations.
• Participated in the Opal Hackathon 2025, collaborating on innovative solutions using modern Optimizely technologies.
• Participated in the Optimizely Hackathon 2024 in London, where my team placed 3rd, utilizing Optimizely CMS SaaS Core APIs, Headless, Optimizely Graph, and AI to develop innovative solutions.
• Contributed to backend development using ASP.NET Core Web API, applying clean architecture and best practices.
• Collaborated with front-end teams and stakeholders to translate business requirements into scalable technical solutions.
• Leveraged Azure DevOps for CI/CD pipelines and deployment.
• Supported other projects using Umbraco CMS and worked on backend development for standard .NET applications, including developing APIs.
• Designed and developed RESTful APIs and integrations with external systems, supporting scalable and high-performance applications.
• Worked in a distributed team delivering solutions for international clients.

Senior Backend Engineer / Optimizely - Sudo Roux

(2022-06 - 2023-09)

• Developing and customizing web applications using Optimizely CMS, delivering high-quality solutions tailored to clients' needs.
• Successfully contributed to the migration project, playing a key role in transitioning from CMS 11 and Commerce 13 to CMS 12 and Commerce 14.
• Extensive experience in implementing and configuring Optimizely CMS, including content modeling, page templates, blocks, and workflows.
• Skilled in creating and optimizing CMS-driven websites, ensuring seamless content management, dynamic page rendering, and efficient data retrieval.
• Skilled in troubleshooting and resolving issues related to Optimizely CMS, performing debugging, code reviews, and implementing effective solutions to ensure optimal performance and stability.
• Worked on integrating Optimizely solutions with HubSpot, facilitating seamless data exchange and synchronization between platforms to streamline marketing and sales processes.

Senior Solution Developer / Sitecore - Link Development

(2016-10 - 2022-05)

• Experience with Sitecore Content Management Solutions, including custom development versus out-of-the-box configuration.
• Experience with Umbraco Content Management Solutions.
• Provide guidance on development techniques and best practices using Sitecore.
• Assist the PM and Lead Developer in the project planning process, provide detailed work estimates.
• Transfer knowledge to other members of the application development team.
• Create server-side functionality using object-oriented design principles.
• Research, design, implement innovative software solutions and deliver projects on-time and to specification with high level of quality.
• Design, document and implement REST APIs using ASP.NET Web APIs.
• Using the Agile development process to keep up with the fast-changing requirements and participate in regular scrum meetings to define work and report on progress.

Software Engineer – Online Shipment Management - Online Technical Services

(2015-09 - 2016-09)

• Contributed to developing, supporting and designing web applications using ASP.net MVC, Entity Framework, SQL Server and JQuery.
• Work effectively and maintain constant communication with other developers and QA regarding bugs and issues.

Software Engineer – Human Resources and Payroll - Civil Soft

(2015-04 - 2015-08)

• Contributed to developing PMS (Performance Management System) web application using ASP.net MVC, Entity Framework, SQL Server and jQuery.
• Develops procedures to solve technical problems of moderate complexity.

Bachelor - Computer Science - Ain Shams University (2012)