David Farrell Email & Phone Number

I am a versatile .NET C# developer with a strong background in both software development and systems administration, capable of delivering full-stack solutions that blend powerful applications with stable, secure infrastructure. With expertise in ASP.NET Core, REST API development, and Umbraco CMS, I create dynamic, data-driven applications tailored to business needs.My proficiency in Windows Server administration includes setting up, securing, and optimizing environments on IIS, as well as managing DNS, VPNs, and SMTP configurations for seamless connectivity and secure communication. I bring a wealth of DevOps knowledge, with experience using TeamCity for CI/CD, Git for version control, and RabbitMQ for message brokering, ensuring efficient workflows and reliable app functionality.I’m well-versed in database platforms like Microsoft SQL Server, MySQL and PostgreSQL, and adept at handling cloud deployments on Amazon Web Services (AWS) and Azure, optimizing resources for performance and scalability. My network and security skills extend to tools such as MikroTik routers, Synology NAS, Cloudflare for CDN and security, and Tailscale and Clouflare Zero Trust for secure networking, ensuring a seamless, protected environment for applications.In addition to my technical expertise, I have hands-on experience with SPF, DKIM, and DMARC email authentication protocols, enhancing email security and deliverability. I’m also proficient in Xero API integration, connecting applications to streamline financial data flows, as well as Visual Studio for development and IIS for deployment.With this diverse skill set, I am committed to delivering high-performance, secure applications and infrastructure that support business growth.

Listed skills include C#, Asp.Net, Asp.Net Mvc, Asp.Net Ajax, and 30 others.

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  Cto And Co-Founder

  Leadify.Biz

  Nov 2016 - Present - Cape Town

  As the CTO and co-founder of Leadify I have been responsible for overseeing all development tasks, building a DevOps environment, creating development processes and methodologies, and managing a small development team.- SQL Server database optimisaton- MySQL database optimisation- PostgreSQL database optimisation- Tailscale VPN implementation- Teamcity Continuous integration and deployment- Integration of third-party Rest and SOAP APIs- Development of APIs for use by third-parties- Integration of Xero APIs and credit card payment gateways for automated billing- Visual Studio 2022 and C# ASP.NET development