Senior C++ Software Engineer

New Job: Senior C++ Software Engineer
Up to £140,000 base + 50% bonus

Orbis has partnered with a leading financial organisation that has developed a state-of-the-art serverless database technology, originally designed for internal use and now open-sourced. The platform is recognised for delivering extremely fast data retrieval and seamless integration with quantitative research workflows.

The team operates as a startup within the wider business, with a strong emphasis on innovation, autonomy, and agility. Engineers are empowered to define their own requirements and have direct influence over the product.

The Role

This is a unique opportunity to join a small, expert team building high-performance infrastructure for financial data systems. As a Senior C++ Software Engineer, you will:

• Develop and optimise C++20 code for a serverless database running on user machines, leveraging AWS S3, Google Cloud and on-premise storage

• Tackle performance-critical areas, including algorithm design, multi-threading, parallelisation, and network efficiency

• Work closely with quantitative developers and integrate Python wrappers to support research tooling

• Contribute to a well-respected open-source project with high engineering standards

• Operate in a high-impact, ownership-driven environment with no product managers

Key Requirements

• 5 to 7+ years’ experience in modern C++ development, ideally with C++20

• Strong understanding of performance optimisation, parallel processing, and network usage

• Familiarity with Python and scientific tools such as NumPy or Pandas (not essential)

• Interest in big data systems, data lakes, or serverless infrastructure

• Clean, maintainable coding practices and a passion for building robust, scalable systems

• Prior experience in financial markets or open-source contribution is beneficial but not essential

What’s on Offer

• A collaborative, startup-style environment within a stable financial organisation

• The opportunity to shape and contribute to a next-generation open-source product

• Competitive compensation and high visibility across the technology function

If this sounds like the right next step in your C++ engineering career, apply now.