Software Engineer – Python & C++

Location: London (Hybrid – 1-2 days/week in office optional) 

Reports to: CTO  

Key Responsibilities 

• Transform prototype/research code into production-ready systems 

• Build systems used by global financial institutions in live pilots with AWS/Google, LSEG and Red Hat. 

• Establish and enforce code quality standards and best practices 

• Mentor junior engineers through code reviews and pair programming 

• Own full development lifecycle from design to deployment 

• Optimise performance-critical Python and C++ code 

• Build robust testing frameworks and CI/CD pipelines 

• Make technical decisions on architecture and tooling 

• Ship features rapidly while maintaining high quality standards 

Essential Requirements 

• Strong Python and C++ experience in production environments 

• Track record of shipping software with high velocity 

• Experience taking prototype code to production scale 

• Proven ability to maintain and improve code quality 

• Experience mentoring junior developers 

• Comfortable in fast-paced startup environment 

• Strong testing and code review practices 

Nice to Have 

• Fintech or quantitative finance experience 

• Experience in numerical or performance-critical systems (HPC, scientific computing) 

• ML/AI deployment experience 

• Cloud platforms (AWS/GCP) and kubernetes (Red Hat OCP) 

• Financial markets understanding 

• Other object orientated experience (Java) 

What We Offer 

• Direct impact working with CTO  

• Shape engineering culture from early stage 

• Competitive salary 

• Eligible for stock options after probation period 

• Flexible hybrid working 

Interview Process 

1. Initial conversation with CTO (30 mins) 

1. Technical discussion and code review exercise (90 mins) 

1. System design and architecture discussion (60 mins) 

1. Meet the team and culture fit (45 mins) 

Email us to apply.

We look forward to hearing from you!