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Company Description
Defined Calculus is a highly specialized talent acquisition firm serving the investment finance and quantitative trading ecosystem across the United States and the United Kingdom. The company concentrates exclusively on three deeply technical verticalsQuantitative Research, Quantitative Development, and Software Engineeringbringing a methodical, headhunting-led approach to filling complex roles that require rare combinations of mathematical rigor, coding excellence, and market domain knowledge. Rather than advertising jobs, Defined Calculus proactively sources candidates beyond its established network using both traditional search methodologies and the latest technical resources, emphasizing quality over quantity at every stage. The firm partners with quantitative trading firms, hedge funds, proprietary trading groups, and asset managers across asset classes, with especially strong experience in commodities, and supports employers with both contingent and retained search services. Clients highlight the firms detailed screening notes, industry-leading market intelligence, and consistent follow-through, while HR and Talent Acquisition teams appreciate Defined Calculus ability to align with process, provide real-time market feedback on compensation and skills trends, and navigate competitive interview cycles effectively. Founded in New York in late 2017 by Allister Duncan after several years as a 360-degree recruiter in London and New York, the firm initially bridged core Data Science and Software Engineering across startups to Fortune 100 companies before evolving to focus on investment finance and quantitative trading. Its operating philosophy is grounded in radical transparency, respect, integrity, and a relationship-driven mindset that treats every interaction as the start of a potential long-term partnership. Candidatesfrom quantitative researchers and developers to software engineers and executive-level data leadersbenefit from hands-on guidance, clear expectation setting, and feedback collection after interviews, ensuring clarity and momentum throughout the process. With a calm, process-driven determination, Defined Calculus brings a world-class talent network, advanced sourcing methods, and trusted market insight to deliver results in one of the most competitive technical talent markets worldwide.
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