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London - £120k - £160k per annum + 25% Bonus + 10% Pension Permanent Posted by: Joseph Harry Ltd Posted: Wednesday, 28 January 2026
 
 

Lead React Developer (Software Engineer Programmer Developer React ReactJS React.JS TypeScript Redux Saga Ag-Grid AgGrid Python Fixed Income Equities Derivatives JavaScript Node Credit Rates Bonds Agile AWS GCP Azure Buy Side Asset Manager Investment Management PostgreSQL Node Finance Front Office Trading Financial Services) required by our asset management client in London.

You MUST have the following:

  • Good experience as a Senior/Lead React Developer/Software Engineer/Programmer
  • Demonstrable leadership experience such as carrying out projects, delegating work, reporting to senior management, architecture and mentoring more junior team members
  • Expert TypeScript, JavaScript, React and Node
  • Advanced Ag-Grid
  • Experience in finance
  • Agile

The following is DESIRABLE, not essential:

  • Trading, equities, Fixed Income, derivatives
  • Redux, Redux Saga
  • AWS or GCP
  • PostgreSQL
  • Python

Role: Lead React Developer (Software Engineer Programmer Developer React ReactJS React.JS TypeScript Redux Saga Ag-Grid AgGrid Python Fixed Income Equities Derivatives JavaScript Node Credit Rates Bonds Agile AWS GCP Azure Buy Side Asset Manager Investment Management PostgreSQL Node Finance Front Office Trading Financial Services) required by our asset management client in London. You will lead one of five teams that are responsible for the build and maintenance of a multi-asset, in-house portfolio management system. You will be a hands-on lead but also have line management responsibility. The team has a Front End emphasis, using a stack of React, TypeScript, Redux, Redux Saga, Ag-Grid and Node. There would be a small amount of Back End exposure, but you're Back End ability can be limited. The Back End is Python, PostgreSQL and AWS. Cloud experience is useful but not essential.

You will join the team having demonstrable leadership experience such as carrying out projects, delegating work, reporting to senior management, architecture and mentoring more junior team members. It is imperative that you have worked in finance. From a technology perspective, you will be an expert across React, TypeScript, Redux and Node. Your Ag-Grid ability will be advanced. An appreciation of trading and financial products, including derivatives, would be desirable, but is not essential.

The department has a relaxed hybrid working policy. You will need to come into the office for demos and other meetings but, generally, around twice/week is sufficient.

This is an environment that has been described as the only corporate environment with a start-up/fintech attitude towards technology. Hours are 9-5.

Salary: £120k - £160k + 25% Bonus + 10% Pension

London, UK
IT
Executive
ASAP
£120k - £160k per annum + 25% Bonus + 10% Pension
Joseph Harry Ltd
Anthony Russell 
JS-UITL
28/01/2026 11:04:46
About Joseph Harry Ltd

IT recruitment specialists for the financial and banking sectors. We place contract and permanent staff in London and New York. 


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