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Software Engineer - Harrington Starr

Software Engineer - Harrington Starr

On site

London, United kingdom

Junior

Full Time

26-01-2026

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Skills

Communication Leadership Python CI/CD Problem-solving Decision-making Research Linux AWS C++ Analytics

Job Specifications

Hybrid – London | Global FinTech Innovator

Our client is an established yet fast-growing FinTech specialising in high-performance market data analytics. Their platform ingests and processes terabytes of global trading data daily, powering decision-making for leading investment firms, exchanges, and research institutions.

They’re now seeking a C++ Engineer to join their equities data team, helping scale the next generation of data-processing systems within a collaborative engineering leadership team.

This role ideal for someone who thrives on solving deep engineering challenges in C++.

The Role

Development for the firm’s equities data processing platform, working alongside other engineers and a senior architect..
Develop and refine C++ market-data parsers and processing engines that handle high-frequency and reference data at scale.
Enhance system performance, fault-tolerance, and scalability, leveraging modern AWS-based distributed infrastructure.
Participate in a light-touch support rotation to ensure smooth daily operation of the firm’s data feeds.

About You

Strong C++ development experience on Linux, delivering robust, performant systems into production, ideally 2 years or more.
Solid Python capability for orchestration, data tooling, and process automation.
Experience with large-scale financial or market data, particularly equities or other exchange-traded products.
Familiarity with modern engineering practices — CI/CD, source control, automated testing, and containerised deployment.
Excellent communication, organisational, and problem-solving skills.

Contact:

For further details or a confidential discussion about this opportunity, please reach out to Ciara Clarke.

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About the Company

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