Senior Application Developer needed to create/maintain multi-threaded C# server applications running as services. Will use .NET Framework 2.0/3.0, SQL Server 2000/2005 stored procedures, message queuing, and FIX protocol. Will be the senior developer on electronic futures trading client and exchange APIs, leading 1-3 other developers in development, maintenance, and support of these applications. Will be an integral part of a dynamic, growth-oriented, 24 x 7 real-time software development team. Trading industry experience not required, but preferred. Qualifications o Expert in server-side development of .NET-based n-tier systems - C# / .NET Framework 2.0 (will migrate to .NET 3.0 in the future) - Object-oriented design and development - Real-time, high availability systems - Multi-threading o Familiarity with the following technologies - Windows services - SQL Server 2000/2005 (DB modeling/design, stored procedures, ADO.NET) - Message queuing (Sonic MQ experience a plus) - FIX protocol (QuickFIX experience a plus) o Trading industry/applications experience nice to have (futures exchanges API development experience ideal) o Creative application designer and problem solver. Able to work effectively with minimal supervision/direction. o Professional demeanor, strong communication skills, responsive customer service attitude, and a commitment to working in a team environment are essential. o Able to express complex technical concepts to various audiences effectively, both verbally and in writing. o Able to work within a structured SDLC environment, designing and developing based on iterative requirements, producing iterative internal releases of code for team collaboration, reviews, and testing. o Able to lead other developers in development, maintenance, and support tasks while also working on own development tasks. A bachelor's degree preferred. Relocation expenses will not be covered. About R.J. O'Brien R.J. O'Brien is the largest independent futures brokerage in the United States. A privately owned Futures Commission Merchant (FCM), RJO is also one of the oldest futures brokerage firms, dating to 1914. RJO is a founding member of the Chicago Mercantile Exchange and is a full clearing member of: the Chicago Board of Trade (CBOT); the New York Mercantile Exchange (NYMEX and COMEX divisions); the New York Board of Trade (NYBOT); Eurex AG; Eurex US; EuronextLIFFE; and Intercontinental Exchange (ICE). RJO offers the latest in order entry technology coupled with 24-hour execution and clearing on every futures exchange worldwide. RJO services a nationwide network of more than 250 introducing brokers and some of the world's largest financial, industrial and agricultural institutions. Experience: Senior, Lead, Application Developer, .NET, C#, Electronic Trading, Futures, Exchange API, SQL Server, Message Queues, FIX To Apply to this job go to http://www.GadBall.com or click here