Senior Quantitative Developer - Rates in London

We are seeking a highly skilled Senior Quant Developer to lead a major spreadsheet retirement initiative, transforming legacy Excel-based analytics into robust, production-grade Python components. This is a hands-on technical leadership role, owning the full lifecycle of analysis, redesign, development, and integration into a modern analytics framework.

Key Responsibilities

• Lead the decommissioning of ~10 complex, end-of-life spreadsheets with significant operational and modelling risk.
• Analyse, reverse-engineer, and simplify legacy Excel logic, formulas, macros, and hidden workflows.
• Rebuild analytics as clean, maintainable, and scalable Python solutions.
• Integrate new components into existing proprietary analytics libraries and data frameworks.
• Apply strong engineering standards, including automated testing, documentation, and reliability practices.
• Translate embedded SQL-style logic into well-structured, production-ready code.
• Work across multiple asset classes, including equities, rates, and inflation.
• Provide guidance, mentorship, and technical direction to a junior quant developer.

Required Experience

• Strong Python development background within a quantitative, analytics, or financial-engineering environment.
• Hands-on experience working with Excel/VBA-heavy legacy systems and untangling complex spreadsheet workflows.
• Broad exposure to asset classes such as equities, interest rates, and inflation products.
• Familiarity with analytics libraries, numerical methods, and relational data concepts.
• Ability to dissect poorly structured legacy tools and redesign them into scalable, automated solutions.

The ideal consultants will share our values and be aligned with our ways of working. As your career progresses, you can expect to work across all areas of the project lifecycle, from strategy to implementation. This will provide you with a broad base of experience from which to build an outstanding career.

We pride ourselves on:

• Providing our people with a supportive culture, rooted in our values and driven by our purpose.
• Promoting a culture of inclusion, collaboration, well-being, and learning and development.
• Providing increased agility and flexibility within our hybrid working model.
• Investing in employees’ growth through ongoing training and development.
• Autonomy to take ownership of projects, making decisions and demonstrating individual expertise.
• Providing a transparent performance and career management experience.

Our consultants are integral to delivering successful consulting engagements, addressing our clients’ most pressing business challenges, and building lasting value in disciplines such as:

• Solve sophisticated, ambiguous business, change and technology problems, bringing structure and meticulous analysis and planning, acting, and taking decisions with little strategic direction.
• Build, develop and sustain trusted senior client relationships in the C-suite by remaining highly attuned to client needs.
• Drive, enable and support the business, partnering with our leaders, clients, and consultants across our practices to take the best of emagine to our clients through opportunity identification/qualification, solution development/presentation.

At emagine, we are committed to building an international and diverse team by embracing our different backgrounds. If you are up to the challenge and would like to find out more, get in touch with us immediately, our internal recruitment team is always keen to hear from dynamic individuals that are looking to further their career and explore their full potential.

emagine is an equal opportunity employer, and employment practices are based strictly on merit. It is the policy of the Company to give equal opportunity in employment regardless of sex, sexual orientation, marital status, race, age, disability, gender reassignment, pregnancy and maternity, religion or ethnic origin.