Kforce is partnering with a rapidly growing financial firm in Boston, MA to hire a highly skilled Principal Software Engineer (Quant, Fintech). This role requires a unique combination of programming expertise, applied mathematics proficiency, and knowledge of financial instruments such as equities, fixed income, or derivatives. Summary: As a Principal Software Engineer, you will be pivotal in implementing advanced analytical models and tools to support researchers and investment decision-makers globally. You'll work closely with a dynamic and multidisciplinary team of quantitative software engineers, researchers, and investment professionals on high-impact projects. This position offers an exciting opportunity to lead the development of cutting-edge technical solutions, including gathering requirements, designing systems, productizing innovations, and optimizing performance. Key Responsibilities: * Develop and refine analytical models and sophisticated tools to support investment research and decision-making * Collaborate with cross-functional teams on high-visibility projects that drive innovation and impact * Lead technical initiatives across the full software development lifecycle, from requirements gathering to design, implementation, and optimization * Ensure delivery of best-in-class solutions tailored to quantitative investment workflows