Java Quantitative Developer - iSAM Securities

iSAM Securities · United Kingdom · On site · 8 days ago

Sign up to apply
Your first one is free
Posted October 06, 2026 · Read from iSAM Securities
Why a CV for this job?

94% of employers say their filters drop qualified candidates whose CV does not match the ad's exact criteria (Harvard Business School, 2021).

  • They see what they asked for, first. Your experience that matches the ad leads, in the ad's own words, so someone skimming finds it in seconds.
  • It gets past the software. Many larger employers use software that ranks CVs by how closely they match the ad, often before anyone reads them.
  • In the language of the ad. An ad written in Spanish gets a CV in Spanish, even when yours is in Portuguese.
  • Your facts, nothing invented. Your own experience, reordered and reworded. What the ad wants and your CV does not show is listed for you to add, only if it is true. You check it before you send it.
See an example

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 Securities trading platforms are entirely owned and build by in-house teams. We typically

use Java (and C++) for server-side development with KDB and Postgres data storage, with

financial modelling done in Python.

The platforms are under active development, and entire areas are being re-implemented from

the ground up. All work in this team is on the critical path – we handle more than 4T USD

annually –everything counts!

Responsibilities:

  • As part of the small, highly skilled ISAM Securities Quantitative Development team, you will beexpected to:
  • Build ultra high-performance front-office software for pricing, execution and riskmanagement.
  • Work closely with our quantitative research team to reliably implement models in ascalable and HA fashion.
  • Develop in a manner to reflect the 24x7 operation of our trading platform, includingdistributed systems design and the deployment of software releases whilst trading

Qualifications:

  • Outstanding Java coding with an interest in finance and technology.
  • Experience of very high performance zero-GC and lock free software engineering in Java.
  • Experience of and understanding of the LMAX set of open-sourced software tools(Aeron, Disruptor, SBE, Artio, Agrona).
  • Experience of solving HA problems and distributed systems challenges is useful(especially Aeron cluster / Raft).
  • Any knowledge of Python/C++ and scientific computing would be advantageous.
  • Pragmatic mindset with strong problem-solving abilities.
  • Excellent attention to detail and organisational skills.
  • Self-motivated with ability to work with minimal supervision.

Personal Attributes:

  • Enthusiasm.
  • Strong communication skills.
  • Ability to work collaboratively.
  • Attention to detail.
  • Ability to adapt in a rapidly evolving environment.
Employer
iSAM Securities
Location
United Kingdom · On site