Senior Software Engineer Python AWS - Front Office

Client Server; Greater London; Hybrid; GBP 78,000 - 130,000; Full time

Benefits offered by this job

Pension

Job summary

Client Server is seeking a Senior Software Engineer / Developer with strong Python backend and AWS experience to build high-performance trading systems and scalable cloud infrastructure in a London-based hybrid role.

The successful candidate will lead end-to-end delivery across front, middle and back offices, champion DevOps practices, and contribute to securing and optimizing large-scale trading workflows. Occasional frontend work is involved, and a competitive package is offered.

Qualifications

• Advanced backend Python development skills.
• Strong knowledge of AWS, DevOps practices, CI/CD, Containerisation.
• Comfortable with occasional front end work.
• Experience owning the end-to-end software delivery lifecycle.
• Experience working in Front Office trading environments.
• Strong communication skills.

Responsibilities

• Design, develop and enhance high-performance trading systems and cloud infrastructure for front, middle and back office operations.
• Lead projects from design through to deployment, building secure, highly available systems handling large volumes of market data.
• Champion engineering best practices, automation, DevOps and cloud architecture to improve the team’s capabilities.

Skills

Python

AWS

CI/CD

DevOps

Frontend basics

Job description

Senior Software Engineer / Developer (Python AWS) London / WFH to £130k

Are you a Python technologist with experience of Front Office trading environments?

You could be progressing your career on the Asset Management side of a global Japanese bank as they expand this product offering within the UK.

As a Senior Software Engineer, you'll design, develop and enhance high performance trading systems and cloud infrastructure that support critical front, middle and back office operations. Collaborating with stakeholders across the business, you'll translate complex requirements into scalable, resilient technology that drives efficiency and business growth.

You'll lead projects from design through to deployment, building secure, highly available systems capable of handling large volumes of market and trading data. Alongside hands-on development, you'll champion engineering best practices, automation, DevOps and cloud architecture, helping to continuously improve the team's technical capabilities.

Location / WFH

You will be based in the London, Bank office three days a week with flexibility to work from home twice a week.

About you

• You have advanced backend Python development skills
• You have a strong knowledge of AWS, DevOps practices, CI/CD, Containerisation
• You're comfortable with occasional front end work
• You have experience of owning the end-to-end software delivery lifecycle, are proactive in bringing solutions problems identified
• You have experience of working in Front Office trading environments
• You're pragmatic with great communication skills

What's in it for you

As a Senior Software Engineer / Developer you will earn a competitive package including:

• Salary to £130k + bonus
• Pension