Senior Quant Developer (iSAM Tensor)

iSAM; Greater London; On-site; GBP 120,000 - 180,000; Full time

Job summary

iSAM, a fintech focused on quantitative trading based in London, is seeking an experienced quant developer to join the Tensor unit. You will work on end-to-end production of Python-based strategies, collaborating with researchers and engineers to build a scalable platform.

Responsibilities include delivering robust, well-tested software, improving the platform, and supporting production operations. You will contribute to cutting-edge AI-driven approaches in a fast-paced trading environment.

Qualifications

• Minimum 5 years’ experience working with researchers on a quant trading codebase.
• Proven ability to deliver well tested, monitored trading software.

Responsibilities

• Produce and maintain professional, scalable code.
• Collaborate with researchers to translate strategies into robust Python production code.
• Proactively improve all aspects of the trading platform.
• Provide production support on a rotation after certification.

Skills

Python

Production-grade software

Research collaboration

Tools

Git

Linux

CI/CD

Job description

iSAM is an innovative, financial technology firm specialising in quantitative trading, comprised of iSAM Funds and iSAM Securities.

iSAM Securities regulated by the FCA, SFC, and CIMA registered, is a leading algorithmic trading firm and trusted electronic market maker, providing liquidity, technology and prime services to institutional clients and trading venues globally. The firm offers full-service prime brokerage and execution via its cutting-edge proprietary technology, as well as market leading analytics, cleared through the group's bank Prime Brokers.

iSAM Funds is an alternative asset manager specialising in systematic investing. Each strategy is unique, provides a specialist quantitative approach and is designed to deliver highly diversifying absolute returns for institutional portfolios.

About the Role:

iSAM Tensor is a brand-new business unit (founded in August 2026) with the remit to build a new systematic, multi-strategy trading platform that will start trading in December 2026. The Tensor team is responsible for every aspect of the platform, from data to strategy development to portfolio construction to execution to production monitoring, ensuring the system is stable, scalable and robust. They take an idea from inception to production. As we grow the platform and onboard additional strategies and asset classes, we are looking for an experienced quant developer to join our London team. This is a key hire for the team, giving the successful candidate the opportunity to join a new systematic trading business at the beginning. This is a hands‑on position in an intentionally flat structure within a collaborative team where you will directly contribute to every part of the platform. You will work with researchers, quant developers and engineers from across the firm to drive our success.

Responsibilities:

• Produce and maintain professional, high-quality, scalable code.
• Work closely with researchers to aid strategy and portfolio development and ensure that strategies (written in Python) are robust and performant in production.
• Pro-actively find ways to improve all aspects of the platform.
• Support the platform in production on a support rota once certified.

Qualifications:

• A minimum of 5 years’ experience working closely with researchers on a quant research code base within a systematic trading business.
• Proven ability to deliver well tested, well monitored systematic trading software

Personal Attributes:

• You are a smart, intellectually curious, self-driven professional with a high attention to detail and a willingness to learn.
• You have strong communication skills and can clearly explain a complex system.
• You enjoy working in a collaborative environment directly with colleagues from multiple backgrounds and areas of expertise.
• You are comfortable working at the coal face of a fast-paced trading environment.
• You take pride in and ownership of your work, care about quality and continuously strive for improvement, both individually and for the wider team.
• You are excited about how (and pro-actively research new ways that) AI could transform the operation of a systematic trading business.