Software Engineer Python SQL - Market Data

Client Server Limited; Greater London; On-site; GBP 110,000 - 150,000; Full time

Benefits offered by this job

Bonus

Pension

Self development

Job summary

Client Server Limited is seeking a Software Engineer / Developer (Python SQL) for a London-based role with substantial bonus potential. You will help build a modern medallion architecture data platform, spanning data engineering, distributed systems, infrastructure and frontend tasks.

The role emphasizes ownership in a small, collaborative team, with a hands-on approach and the opportunity to work across the full development lifecycle. London office, full-time.

Qualifications

• Strong backend development experience with Python.
• Experience with financial or market data.
• Experience designing and operating data-intensive, distributed systems.
• Strong knowledge of relational, NoSQL and columnar databases.
• Ownership mindset across full development lifecycle.
• Collaborative with stakeholder management skills.
• STEM degree 2.1 or above, MSc likely.

Responsibilities

• Design and build data platform components using Python.
• Develop and optimise ETL pipelines, Data Lakes/Lakehouses and distributed systems.
• Improve infrastructure, observability and CI/CD practices.
• Maintain and evolve existing systems (microservices, ETL, Excel add-ins).
• Support platform operations, ensuring reliability and performance.

Skills

Python

SQL

Data engineering

Distributed systems

CI/CD

Observability

Education

2.1 STEM degree

MSc preferred

Tools

Excel add-ins

Job description

Software Engineer / Developer (Python SQL) London to £150k+

Are you a data savvy Software Engineer with strong Python coding skills?

You could be joining a Hedge Fund with complex work and substantial bonus earning potential.

As a Software Engineer you will join a growing team building a modern medallion architecture data platform, working across everything from data engineering and distributed systems to infrastructure and frontend. This is a hands‑on role in a small, collaborative team where you'll have real ownership and impact.

Your Role

• Design and build data platform components using Python
• Develop and optimise ETL pipelines, Data Lakes/ Lakehouses and distributed systems
• Improve infrastructure, observability and CI/CD practices
• Maintain and evolve existing systems (microservices, ETL, Excel add-ins)
• Support platform operations, ensuring reliability and performance

Location / WFH:

You’ll join colleagues in the impressive Central London office on a fulltime basis, Monday to Friday.

About You

• You have strong backend development experience with Python
• You have experience of working with financial or market data
• You have experience of designing and operating data‑intensive and distributed systems
• You have a strong knowledge of databases (Relational, NoSQL and Columnar)
• You're keen to take ownership and work across the full development lifecycle
• You're collaborative and pragmatic with strong stakeholder management skills
• You have achieved a 2.1 or above in a STEM discipline, likely to have studied to MSc

What's In It For You

As a Software Engineer / Developer (Python SQL) you will receive a competitive package:

• Salary to £150k
• Bonus
• Pension
• Self development and career progression opportunities