Core Engineer

About Us

Ordo One is a dynamic startup based in Stockholm, Sweden, focused on developing cutting-edge, high-performance trading systems for professional trading firms. Our entire technology stack, from the macOS frontend to the Linux-based server side, is built using Swift. With a proven track record of successfully bringing multiple similar products to market, we're confident that we will execute our vision for a next-generation trading system. Currently a team of 9, we are looking to expand as we grow and scale our highly available platform.

In early 2025, we’re opening up new positions to help us achieve our next stage of growth.

Why Ordo One?

• Join a small, focused team with a proven track record building innovative products.
• Tackle high-impact projects in a performance-critical trading environment.
• Shape the future of trading technology using a fully Swift-based stack.
• Leverage the latest tools and platforms, including the latest versions of Swift, SwiftUI and macOS and in the future support emerging technologies like Apple Vision Pro.
• Help shape our scalable, highly available trading platform while contributing to the Swift open source community.

Core Engineer

You will have the opportunity to work on highly available, high-performance server-side components and frameworks that support our platform in close cooperation with the rest of our core engineering team.

Key Responsibilities

• Design, implement and maintain core infrastructure components and libraries.
• Write unit and integration tests
• Contribute to Open Source projects relevant to Ordo One
• Build scalable high-performance server-side software using Swift on Linux and macOS.

If you’re excited about building the next generation of trading systems and would love working with Swift, we’d love to hear from you.