Senior Developer C# - Fixed Income (Bonds & Repo)

As the founding entity of RAINBOW PARTNERS, Quanteam is a consulting firm specialized in Banking, Finance, and Financial Services. Through our core human values – proximity, teamwork, diversity, excellence – our 1000 expert consultants, hailing from 35 different nationalities, collaborate across 13 international offices: Paris, Lyon, New York, Montreal, London, Brussels, Luxembourg, Geneva, Lisbon, Porto, Casablanca, Madrid and Singapore.

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About the Role

Our client, a leading global investment bank based in New York City, is hiring a Senior Front Office Fixed Income Developer to join the technology team supporting the Repo & Bonds trading desk.

You will work on a critical in-house trading application used daily by Front Office stakeholders, with high visibility and direct impact on trading workflows, pricing, risk and execution.

This is a hands-on role for an experienced developer who is comfortable operating in a fast-paced Front Office environment, partnering closely with Traders, Sales, and Desk Strategists.

Key Responsibilities

Design, develop, and enhance an in-house Fixed Income trading platform supporting Repo & Bonds activity

Build new features and improve performance, stability, and user experience of Front Office tools

Partner directly with traders and desk stakeholders to capture requirements and deliver solutions quickly

Contribute to core components such as:

trade booking & lifecycle workflows

pricing / curve & analytics integration

real-time monitoring dashboards

risk and P&L views

automation of manual desk processes

Own the full development lifecycle: architecture, development, testing, release, and production support

Work closely with cross-functional teams (Risk, Middle Office, Quant, QA, Infrastructure) to ensure end-to-end delivery

Required Skills & Experience

7+ years of software development experience (or equivalent), ideally in capital markets

Strong expertise in C# / .NET in a production environment

Proven experience supporting Front Office users (trading desk exposure is required)

Excellent understanding of software engineering best practices:

OOP / xywuqvp SOLID principles

performance optimization

system reliability and maintainability

clean architecture and design patterns

Strong communication skills, able to translate business needs into technical delivery

Ability to work in a high-pressure environment with short delivery cycles

Fixed Income / Markets Knowledge (Expected)

Strong familiarity with Fixed Income products, ideally:

Repo (GC / specials, triparty, funding workflows)

Bonds (government, corporates, IG/HY basics)

Understanding of key Front Office concepts such as:

trade lifecycle & confirmations

market data & curves

risk measures

P&L drivers

pricing / yield / spreads