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# Sr. Middle Office Developer

- **Company:** STEFANI THEO
- **Location:** Jersey City, NJ, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** .NET Framework, C Sharp (Programming Language), C++ (Programming Language), Financial Information EXchange, Microsoft Office, Microsoft SQL Server, Server Administration, Software Deployment, Software Engineering, Software Systems, Multithreading, Cloud Platform System, Solid Principles, Asynchronous Programming
- **Published:** November 5, 2026
- **Apply:** https://www.careerbuilder.com/job-details/sr-middle-office-developer-jersey-city-nj--5095fba9-beb5-42ff-8835-aba43a09c5bb

## About the Role

Trading Platforms, Production Systems, Capital Markets, Software Administration, Test Plan/Schedule, Production Support, Team Lead/Manager, Process Development, Best Practices, Equity Securities, * 8-10 years of professional software development experience with proven expertise in C#, .NET, and SQL Server

 * Strong proficiency in multi-threading, asynchronous programming, and SOLID design principles
 * Demonstrated experience supporting or developing front office trading platforms and middle office systems
 * Solid understanding of capital markets products and workflows (equities, swaps, corporate actions, FIX protocol)
 * Experience with legacy platform modernization and Level 3 production support
 * Knowledge of C++ is beneficial
 * Excellent analytical, written, and verbal communication skills with ability to work cross-functionally
 * Financial services industry experience preferred

## Description

Our client is seeking a Senior Middle Office Developer to lead the design, development, and support of innovative software solutions within a capital markets environment. You will take ownership of production systems, collaborate across global teams, and drive technical excellence bridging front office trading platforms and middle office operations., * Lead architecture, development, testing, and deployment of innovative software solutions supporting trading and middle office operations

 * Provide Level 3 production support including diagnosis, investigation, resolution, and cross-team coordination with business, infrastructure, and vendors
 * Implement, configure, and deploy code changes following established processes and best practices
 * Pro-actively collaborate within a global development team to solve complex technical and business challenges
 * Apply deep expertise in capital markets products including equities, swaps, and corporate actions to design robust solutions
 * Mentor junior developers and drive adoption of SOLID principles and best coding practices
 * Analyze and optimize legacy platform systems to improve performance and maintainability
 * Stay current with market infrastructure standards including FIX protocol and evolving trading technologies