Python Developer SQL Market Data

Client Server; Greater London; On-site; GBP 40,000 - 70,000; Full time

Benefits offered by this job

Pension

Career progression

Bonus potential

Job summary

Client Server is seeking a hands-on data platform engineer in Central London to design and build data platform components using Python and to develop ETL pipelines across data lakes and distributed systems.

The role focuses on reliability, observability, and modern CI/CD practices, with ownership across the full stack from data ingestion to delivery. A STEM degree with MSc-level study is preferred, and the company offers strong pension and career development opportunities.

Qualifications

• Strong backend development experience with Python.
• Experience with financial or market data.
• Experience designing and operating data-intensive and distributed systems.
• Strong knowledge of databases, including relational, NoSQL, and columnar databases.
• Keen to take ownership across the full development lifecycle.
• Collaborative with strong stakeholder management skills.
• A 2.1 or above in a STEM discipline, MSc-level study.

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, including microservices, ETL, and Excel add-ins.
• Support platform operations, ensuring reliability and performance.

Skills

Python

Data platforms

ETL

Distributed systems

SQL/NoSQL databases

CI/CD

Education

STEM degree

MSc preferred

Tools

Excel

Microservices

Job description

Salary: £40,000 - 70,000 per year

Requirements:

• Strong backend development experience with Python
• Experience working with financial or market data
• Experience designing and operating data-intensive and distributed systems
• Strong knowledge of databases, including relational, NoSQL, and columnar databases
• Keen to take ownership and work across the full development lifecycle
• Collaborative and pragmatic, with strong stakeholder management skills
• A 2.1 or above in a STEM discipline, likely including MSc-level study

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, including microservices, ETL, and Excel add-ins
• Support platform operations, ensuring reliability and performance

Technologies:

• Backend
• CI/CD
• ETL
• Excel
• Frontend
• Support
• NoSQL
• Python
• microservices
• SQL

More:

We are a hedge fund with a growing team building a modern medallion architecture data platform. This is a hands-on role in a small, collaborative environment where you will have real ownership and impact. You will work across data engineering, distributed systems, infrastructure, and frontend, based full time in our Central London office Monday to Friday. We offer a salary of up to 150k, bonus potential, pension, and self-development and career progression opportunities.

last updated 36 week of 2026