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# Quantitative Developer - iSAM Securities

- **Company:** iSAM Securities
- **Location:** London, UK
- **Contract:** Permanent contract
- **Skills:** Distributed Systems, Low Latency, C++14
- **Published:** August 6, 2026
- **Apply:** https://uk.indeed.com/viewjob?jk=ea2c1e50315106e7

## About the Role

* 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.

## Description

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.


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