# Quantitative Developer - iSAM Securities at iSAM

> United Kingdom · Unspecified · Software engineering · open. Source: https://alderhq.app/jobs/greenhouse%3Aisam%3A4922213101 (read 2026-11-14).

## Facts (observed)

- Company: [iSAM](https://alderhq.app/companies/isam)
- Location text: London ; London
- Where it can be done from (inferred): United Kingdom (evidence: "Location: London ; London")
- Posted: 2026-07-13 (124 days ago)
- First seen by alder: 2026-11-02 · last verified: 2026-11-09
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://job-boards.eu.greenhouse.io/isam/jobs/4922213101
- Skills listed (inferred): C++, Distributed systems

## Pay and sponsorship

- Posted pay: not posted
- Market band for similar posted roles (London, n 119): p25 £70k, median £103k, p75 £138k

## Description (the employer's text)

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:

Our team builds and operates the low-latency distributed systems at the core of our

trading platform - market data, order routing, pricing, execution, risk, and the

messaging fabric that ties them together. This is a hands-on senior engineering role

for someone who has architected such systems in a trading environment, not just

maintained them. You will join a collaborative team where you have a strong technical

voice, contributing to design and driving both the systems and the engineering

processes around them to a better state.

Responsibilities:

- Contribute to and help shape the design of latency-critical distributed
components: market data, order routing, execution, risk, and the messaging

fabric between them.

- Drive systems and engineering processes to a better state: identify weaknesses,
propose direction, and deliver improvements end to end.

- Reason about the full latency stack across network, hardware, OS, and language
layers, and make deliberate, measured trade-offs.

- Deliver at scale across multiple engineers and teams: set technical direction,
align stakeholders, and coordinate delivery.

Qualifications:

- Fluent in modern C++.
- Proven track record designing critical low-latency distributed systems in a
hedge fund, prop trading, or investment banking environment.

- Concrete, demonstrable understanding of what drives a latency profile across
the network, hardware/architecture, OS, and language layers.

- Demonstrated ability to deliver large efforts spanning multiple people and
teams.

- Enough hard-won production experience ("scars") to know which approaches to
avoid and why.

- Experience delivering performance-critical systems measured and tuned against
demanding latency targets.

- Exposure to exchange connectivity and market data)
### Personal Attributes

- Positive, pragmatic, and collaborative under pressure.
- A driver, not a passenger: you move systems and teams forward rather than
maintaining the status quo or talking without shipping.

- Deeply aware of trade-offs - performance vs. complexity vs. maintainability vs.
delivery time.

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/greenhouse%3Aisam%3A4922213101 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.