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Senior C#/.NET Front Office Trading Developer

QuellSoft Inc.New York, NY🇺🇸United StatesPosted Sep 29, 2026

Why this role stands out

This hybrid role offers a fantastic opportunity to leverage your C#/.NET expertise in high-performance front office trading applications within the dynamic capital markets sector. You'll thrive here if you enjoy collaborative problem-solving and contributing to mission-critical systems, with excellent potential for professional growth and impactful work.

Quick overview

SeniorityMid Senior
Work modeHybrid
LocationNew York, NY, United States
Posted3 weeks ago
SQLSQL ServerT-SQLC#.NETC++

Job description

Job Title: Senior C#/.NET Front Office Trading Developer

Location: New York, NY (Hybrid)
Duration: Long Term Contract
Job Type: Contract (W2/C2C)

Job Description

We are seeking a Senior C#/.NET Front Office Trading Developer with strong experience in Capital Markets and Front Office Trading. The ideal candidate will have expertise in developing high-performance trading applications using C#, .NET, Microsoft SQL Server, and Multithreading/Async Programming.

This role requires working closely with traders, business users, and global technology teams to design, develop, enhance, and support mission-critical trading applications.

Required Skills

  • 8+ years of C# development
  • Strong .NET Framework/.NET Core experience
  • Microsoft SQL Server
  • T-SQL
  • Multithreading
  • Async Programming (async/await)
  • Object-Oriented Programming (OOP)
  • SOLID Principles
  • Design Patterns
  • Experience supporting and enhancing legacy applications
  • Front Office Trading Platforms
  • FIX Protocol
  • Basic C++ knowledge

Capital Markets Experience

Must have experience with:

  • Capital Markets
  • Front Office Trading
  • Equities
  • Swaps
  • Corporate Actions

Responsibilities

  • Design and develop enterprise trading applications
  • Architect scalable software solutions
  • Enhance existing legacy platforms
  • Perform Level 3 Production Support
  • Investigate and resolve production issues
  • Coordinate with Business, Infrastructure, and Vendor teams
  • Implement, deploy, and configure code changes
  • Participate in code reviews
  • Work with global development teams
  • Follow SDLC and development best practices

Nice to Have

  • Experience modernizing legacy systems
  • Low latency trading systems
  • Performance tuning
  • Distributed systems

Functional Skills

  • Financial Services
  • Front Office Trading
  • Equities
  • Capital Markets
  • Trading Systems

Soft Skills

  • Strong analytical skills
  • Excellent communication skills
  • Team player
  • Ability to work in a fast-paced environment
  • Strong ownership and problem-solving skills

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