Why this role stands out: Greenfield build. No legacy constraints; full scope for innovation. High-impact team. A small, expert group delivering real results. Modern tech stack. Python, C++, ClickHouse, and Iceberg. Strategic scope. Shape how the client manages market risk across global portfolios. Real technical challenge. Real-time VaR, billions of rows, seconds to compute. What you’ll More ❯
City of London, London, United Kingdom Hybrid / WFH Options
La Fosse
complex portfolios Market and reference data services enabling pricing and analytics You’ll work across the stack, building performant services and UIs using Rust, Python, React, and PostgreSQL/ClickHouse, with deployments to AWS and Kubernetes. This is a hands-on engineering role with strong product ownership and daily interaction with front-office users. What You’ll Do Design … implement, and maintain scalable HTTP/GRPC services in Rust and Python Develop and optimise data pipelines, databases, and schemas (Postgres, ClickHouse) Build intuitive, real-time UIs using Python and React Translate complex financial logic into accurate, testable code Collaborate with business teams to define requirements and deliver solutions fast Contribute to service design, infrastructure automation (Terraform, Flux), and More ❯
Why this role stands out: Greenfield build. No Legacy constraints; full scope for innovation. High-impact team. A small, expert group delivering real results. Modern tech stack. Python, C++, ClickHouse, and Iceberg. Strategic scope. Shape how the client manages market risk across global portfolios. Real technical challenge. Real Time VaR, billions of rows, seconds to compute. What you'll More ❯
whilst collaborating with stakeholders directly. Ideally, you will have strong experience with Python, or a similar language, and be proficient with SQL. Experience in finance and with databases like ClickHouse is desirable, but is not required. Have a passion for data projects and looking to join a forward-thinking team? Apply or email me directly at megan@saragossa.io No More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Hartree Partners
research code into production services (CI/CD, containers etc) Strong SQL and data-management skills; experience querying large analytical databases (Snowflake highly desirable, but Redshift/BigQuery/ClickHouse etc. also welcome). PREFERRED QUALIFICATIONS: Meteorological understanding/experience with weather modelling Prior knowledge or experience in the power markets or energy sector. Experience with cloud platforms (e.g. More ❯
Architect and implement high-performance data processing systems in Rust Leverage Apache Arrow and Parquet for in-memory and on-disk data efficiency Integrate and extend systems like DataFusion, ClickHouse, and DuckDB Design low-latency pipelines for analytical workloads Collaborate with product and platform teams to expose these capabilities via modern APIs Contribute to open-source projects and shape … You’ll Be a Great Fit If You: Have experience with Rust/C/C++ or systems-level languages Have worked with or contributed to analytical databases like ClickHouse, DuckDB, or DataFusion Understand memory management, file formats, and query execution pipelines Are passionate about open-source and care about software craftsmanship Thrive in a startup environment Want to More ❯
Architect and implement high-performance data processing systems in Rust Leverage Apache Arrow and Parquet for in-memory and on-disk data efficiency Integrate and extend systems like DataFusion, ClickHouse, and DuckDB Design low-latency pipelines for analytical workloads Collaborate with product and platform teams to expose these capabilities via modern APIs Contribute to open-source projects and shape … You’ll Be a Great Fit If You: Have experience with Rust/C/C++ or systems-level languages Have worked with or contributed to analytical databases like ClickHouse, DuckDB, or DataFusion Understand memory management, file formats, and query execution pipelines Are passionate about open-source and care about software craftsmanship Thrive in a startup environment Want to More ❯
in Rust , C , or C++ Solid understanding of operating systems, file systems, and storage internals Experience working with modern data formats or infrastructure tools (e.g., Apache Arrow, Parquet, DuckDB, ClickHouse) A passion for infrastructure and performance problems Willingness and ability to work on-site 5 days/week in London or New York City More ❯
