Mark Clouden, Developer in Wilmington, NC, United States
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Mark Clouden

Verified Expert  in Engineering

Architecture Developer

Wilmington, NC, United States
Toptal Member Since
July 15, 2013

Mark boasts 20 years of contract development experience, bringing a level of technical understanding and professionalism to all projects that is rare in the industry. He specializes in all projects involving Windows and .NET, including both desktop and server products.



Preferred Environment

Visual Studio 2012

The most amazing...

...project I've ever created was when I worked as a project leader to re-engineer Credit Suisse's Accruals Calculation Engine.

Work Experience


2012 - PRESENT
UnitedHealth Group
  • Resolved stability and performance issues in core enterprise services arising from inefficient thread management and ORM implementations.
  • Evaluated and corrected SQL database throughput and deadlocking issues.
  • Established patterns for unit testing of code modules.
  • Created a service framework providing improved scalability and work distribution.
  • Provided guidance on the adoption of a newer framework and language capabilities.
Technologies: ASP.NET, SQL, C#


2010 - 2012
Bank Leumi
  • Worked as development and technical project lead for an integration and customization project to provide advanced client-facing local custodian services.
  • Developed migration processes for existing web, ETL, and database applications to the selected Netik Interview 8 platform.
  • Developed new application functionality and integrated other external systems (SSRS, CRM and SSIS).
  • Provided operational and development training.
  • Created delivery and maintenance procedures.
Technologies: SQL, ASP.NET, C#


2008 - 2010
Credit Suisse
  • Worked as lead developer on a re-engineering effort for Accruals Calculation Engine, the department's core product.
  • Was responsible for framework design and development, third-party tool inclusion and integration, and the establishment of design patterns for the project.
  • Acted as Project and Release Manager for both strategic and monthly business releases. Coordinated QA efforts, developer milestones, and business user acceptance according to Credit Suisse SDLC.
  • Served as technical lead and project manager for the development of new systems permitting the classification of assets and the pricing of margin interest according to the assigned risk of financed securities.
Technologies: SQL, C#


2004 - 2008
Netik, LLC
  • Led the design and implementation of core product line additions for the generation and distribution of board-quality reporting packages.
  • Led the design and implementation of application modules providing generalized portfolio risk and security characteristic calculations based on fund performance measurement data.
  • Provided technical background support and implemented web site modules and content for the integration of the company's web portal application, including external security systems through the use of single sign on according to SAML specifications.
Technologies: ASP.NET, SQL, C#


2004 - 2004
CSG Systems
  • Developed high-volume secure XML gateway network services for a multi-client data warehouse.
Technologies: C#


2003 - 2004
Navigant International
  • Designed and implemented web backend processes providing a multi-staged workflow for air, car, and hotel inquiry, including functionality for making reservations.
Technologies: C#


2002 - 2003
Innovest Systems
  • Developed ETL workflows and processes for financial and trust accounting systems.
Technologies: C++, C#


2001 - 2001
Netik, LLC
  • Developed ETL workflows and processes for financial systems integrations.
Technologies: SQL, C++


1994 - 2000
The Emerging Internet
  • Worked in multiple roles, focusing on the development of backend web application processes and making use of (then-) emerging internet technologies.
Technologies: SQL, ASP, C++

Developer, Systems Analyst

1988 - 1994
The Mainframe Days
  • Specialized in Tandem mainframe system.
  • Was responsible for the development of client-server applications focused on fault-tolerance and high-availability.
  • Was responsible for the analysis of system, network, and application configuration and performance.
Technologies: COBOL, TAL

Bank Leumi

I was asked by a former client to assist with a project that was behind schedule and in danger of being cancelled. I helped to mandate effective practices for the development team and to restructure the relationship with the client. As the project progressed, the team adhered to more disciplined development practices and client communications were more structured, allowing for manageable release cycles. The project was delivered on time in June 2012, and was accepted by the customer.




Windows Communication Framework (WCF), Entity, ADO.NET, ASP.NET MVC, NHibernate, ASP.NET, ASP, Knockout (Knockout.js)


LINQ, Socket.IO, Windows Forms (WinForms), jQuery, jQuery UI


Microsoft Visual Studio, TFS, Subversion (SVN), Windows Installer, Visual Studio 2012


Socket Programming, Asynchronous Programming, Agile Software Development


Win32, Windows, Azure, Oracle


LDAP, TCP/IP, Architecture


Database Modeling, Sybase