ClickHouse Enigneer SQL to ClickHouse Migration Energy Trading Up to £800/day Inside IR35 Hybrid London (2-3 Days Office)

ClickHouse Enigneer SQL to ClickHouse Migration Energy Trading Up to £800/day Inside IR35 Hybrid London (2-3 Days Office)

A hands-on ClickHouse Engineer is required for a leading Energy Trading House undertaking a major transformation of its data platform - migrating from traditional SQL-based systems to ClickHouse. This client operates across physical and financial energy markets, with a strong focus on analytics, optimisation, and real-time data processing to support trading and risk decisions.

This role will focus on designing, building, and optimising the new ClickHouse data architecture, ensuring scalability, performance, and integration with existing trading systems. You'll play a key role in refactoring existing SQL pipelines, enhancing data models, and implementing best practices for high-volume, low-latency data operations. This system will be built in C# .NET, but the real focus of the role is on experience with non-relational databases - ideally clickhouse. They accept alternative experience with C#, Python or similar languages. If not C#, Python is preffered.

The ideal candidate will bring strong hands-on ClickHouse experience, and some experience in either C#/.NET/Python.

Day rate: Up to £800/day Inside IR35

Contract: 6 months rolling (long-term migration programme)

Location: Hybrid - 2-3 days office, London

NO ENERGY TRADING EXPERIENCE REQURED - great opportunity for someone to get into the industry if you have the right tech.

ClickHouse is the silver bullet here - other acceptable alternatives are SingleStore, Rockset, TimescaleDB

Key Responsibilities:

• Design and implement scalable data solutions within ClickHouse.
• Migrate existing SQL data models, ETL pipelines, and reporting layers to ClickHouse.
• Optimise query performance, data ingestion, and storage for high-frequency trading data.
• Collaborate with traders, quants, and data analysts to ensure alignment with business requirements.
• Integrate ClickHouse with surrounding systems, including trading, risk, and analytics platforms.
• Establish data quality controls, monitoring, and performance tuning best practices.
• Support the ongoing evolution of the data architecture and tooling ecosystem.

Experience Required:

• 5+ years' experience as a C# Engineer or ClickHouse Developer in trading or financial services.
• Expert-level SQL development and optimisation skills.
• Hands-on experience with ClickHouse (architecture, performance tuning, schema design).
• Experience with data migration projects and refactoring legacy data systems.
• Familiarity with ETL tools, Python, and data integration frameworks.
• Strong understanding of energy trading or market data domains preferred.
• Proven ability to deliver in Agile, fast-paced environments.

If you are interested in this ClickHouse Engineering role, please reply with your latest CV or send it directly to .