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Senior Quantitative Developer - Fixed Income at Jobgether. This position is posted by Jobgether on behalf of Vichara Technologies. We are currently looking for a . Senior Quantitative Developer. in . New Jersey (USA). .. This is a unique opportunity to play a key role in the development of next-generation quantitative analytics used by top financial institutions. You’ll be part of a high-impact team responsible for building and maintaining valuation and risk models across complex asset classes, primarily within rates, FX, and credit. The position requires a deep understanding of derivatives modeling, quantitative theory, and advanced programming in Python and C++. Ideal for candidates seeking a technically challenging role with room for innovation and close collaboration with traders and portfolio managers.. . Accountabilities:. . Lead the development and implementation of a new quantitative analytics library to support risk and valuation models.. . Enhance existing model coverage to include advanced rate instruments and evolving market structures.. . Maintain, test, and refine quantitative models, ensuring alignment with expected performance and outcomes.. . Collaborate with portfolio managers, traders, and risk teams to provide analytical support and model insights.. . Research and integrate curve-building techniques and stochastic volatility modeling into analytics workflows.. . . . 5+ years of experience developing quantitative financial models using Python, QuantLib, and C++.. . Bachelor’s, Master’s, or PhD in a quantitative discipline (e.g., Mathematics, Physics, Financial Engineering).. . Strong expertise in interest rate derivatives, including bonds, swaps, swaptions, CMS spread options, and midcurve structures.. . In-depth understanding of modeling frameworks such as the Short Rate and Libor Market Models.. . Practical experience with stochastic calculus, Monte Carlo simulation, and finite difference methods.. . Excellent analytical and communication skills with the ability to work closely with cross-functional financial teams.. . . Company Location: United States.