Team Lead C++ Engineer

Harrington Starr is looking for a Team Lead C++ Engineer

Job description

The company


A global fintech firm operating at scale, delivering trading platforms used by hundreds of thousands of clients worldwide. The business is continuing to invest heavily in its core trading infrastructure, with a strong focus on improving delivery speed, system maturity, and overall engineering effectiveness.


The role


This is a leadership opportunity within a business-critical platform that sits at the heart of trading operations, responsible for real-time exposure, risk management, and hedging across client positions. The system processes high volumes of trading data and directly impacts trading performance and decision-making.


You will lead a backend engineering squad working on low-latency C++ systems, while helping to modernise a complex legacy platform. A key focus will be improving release cadence and delivery maturity, alongside driving architectural improvements without disrupting existing production systems.


What you will do

  • Define and drive the technical vision for the team, aligning with both stakeholder needs and long-term system evolution
  • Lead and develop a high-performing engineering team, encouraging autonomy and ownership
  • Work closely with trading desks, quants, and risk teams to deliver business-critical functionality
  • Improve delivery processes, release cadence, and system reliability
  • Lead the modernisation of legacy components, balancing innovation with operational stability
  • Remain hands-on where needed, contributing to C++ and Python code in production


What you will need

  • Strong C++ experience within low-latency or real-time systems
  • Exposure to Python (or willingness to work with it)
  • Experience working on complex, business-critical platforms (ideally within trading or financial systems)
  • Proven ability to lead teams and influence across stakeholders
  • Experience working with legacy systems and improving them pragmatically (rather than full rebuilds)
  • Strong communication skills and commercial awareness


Why consider this

  • Work on systems that directly impact trading performance and business outcomes
  • Opportunity to lead both technical direction and team evolution
  • High visibility role with significant stakeholder interaction
  • Chance to modernise and improve a large-scale, low-latency platform


Summary

A leadership role combining low-latency engineering, stakeholder engagement, and pragmatic system modernisation within a high-impact trading environment.

Extra information

Status
Open
Education Level
Secondary School
Location
City of London
Type of Contract
Full-time jobs
Published at
13-04-2026
Profession type
Accountancy
Full UK/EU driving license preferred
No
Car Preferred
No
Must be eligible to work in the EU
No
Cover Letter Required
No
Languages
English

Accountancy jobs | Full-time jobs | Secondary School

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