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Joseph Harry Ltd
Lead Full Stack Developer Software Engineer Finance London

Lead Full Stack Developer Software Engineer Finance London

On site

London, United kingdom

£ 150,000 /year

Senior

Full Time

23-02-2026

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Skills

Python Java JavaScript Go TypeScript GraphQL angular react AWS ReactJs Agile JS React.js Redux GCP Kafka

Job Specifications

Lead Full-Stack Developer (Software Engineer Programmer Developer ReactJS React-JS React.JS GraphQL Playwright TypeScript Redux Saga Ag-Grid Fixed Income JavaScript Node Credit Rates Bonds Agile Buy Side Asset Manager Investment Management Finance Front Office Trading Financial Services UI Front-End Front End EMS OMS Execution Order Management System Portfolio Golang Go Java AWS Kafka) required by our trading software client in Manhattan, New York City.
You MUST have the following:
Strong experience as a Lead Full-Stack Developer/Software Engineer/Programmer
Excellent JavaScript and TypeScript
Golang or Java
Experience building front office trading systems (portfolio management, execution or order management, risk or PnL analysis)
Strong ability to lead and take concepts and ideas into technical solutions
Excellent stakeholder interaction skills
Agile
The following is DESIRABLE, not essential:
Ag-Grid and GraphQL
Python
Role: Lead Full-Stack Developer (Software Engineer Programmer Developer ReactJS React-JS React.JS GraphQL Playwright TypeScript Redux Saga Ag-Grid Fixed Income JavaScript Node Credit Rates Bonds Agile Buy Side Asset Manager Investment Management Finance Front Office Trading Financial Services UI Front-End Front End EMS OMS Execution Order Management System Portfolio Golang Go Java AWS Kafka) required by our trading software client in London. You will be leading two small teams to build a new multi-asset portfolio management system. The stack is React, TypeScript, Redux, Ag-Grid, GraphQL, Playwright, Java, Golang, Kafka and AWS. The hiring manager is flexible on experience. Ideally, you will have React Front End experience, but this could be substituted by Angular or Vue. Similarly, if you have Java but no Golang and GCP but not AWS, we could still proceed. You could also have Go experience but no Java.
You need experience building trading systems but it does not matter what the asset class is. If you have experience with execution management or order management systems, that would be ideal but is not essential. Similarly, it doesn't matter if your financial experience is from the buy-side or the sell-side.
This is a well-backed company that is growing rapidly and will likely IPO in the next 24 months. There is hybrid working with a possibility for remote working.
Salary: £120-150k + 50% Bonus + Pension

About the Company

Joseph Harry was established to deliver a high level recruitment service to IT within the financial sector. Our reach is global in both permanent and temporary contract markets. We pride ourselves in providing quality service to both our clients and candidates, maintaining our long-lasting relationships. We employ consultants who provide an intelligent and knowledgeable approach to ensure greater efficiency and quality in service. We see our staff as our most valuable asset. We value transparency and trust in all our deali... Know more