Software Engineer

6 days ago

United Kingdom Understanding Solutions Full time

Senior Rust Engineer (High-Frequency Trading) Contract Length: 6 months (with potential extension) Location: London (4 days per week onsite) Day Rate: Up to £800 (Outside IR35) We’re looking for an experienced Senior Rust Engineer to take ownership of a greenfield high-frequency trading (HFT) platform, leading the development of the execution layer and market-making system. You’ll step into a technical leadership role, driving architecture, improving performance, and ensuring the system is built to world-class standards. If you’ve built ultra-low-latency trading systems before and want to take full responsibility for a new Rust-based platform, this is an opportunity to shape a high-impact project from the ground up. Key Experience Needed Extensive experience designing and developing high-frequency trading systems Strong experience working on Rust with a track record of building low-latency, high-throughput production systems Proven ability to lead the build of execution engines, market-making platforms, or similar low-latency trading infrastructure Strong background in system architecture, performance optimisation, and fault-tolerant distributed systems Experience replacing or migrating systems from languages such as Python into Rust Comfortable taking full ownership of a greenfield project with minimal guidance (Self Starter) Strong collaboration attitude across engineering teams Flexible with working remotely but still keen to head into the office when necessary Key Responsibilities Own and drive the development of the execution layer and market-making components of the HFT platform Architect, design, and implement ultra-low-latency Rust systems from first principles Improve, refactor, and optimise the existing codebase to meet best-in-class performance standards Replace or modernise existing Python-based components where appropriate Collaborate with cross-functional teams to deliver an integrated, production-ready trading system Lead technical decision-making, architecture discussions, and coding standards for Rust development Ensure seamless integration with UI and supporting engineering teams Contribute to rapid iteration, debugging, and refinement through close in-office collaboration Senior Rust Engineer (High-Frequency Trading) Contract Length: 6 months (with potential extension) Location: London (4 days per week onsite) Day Rate: Up to £800 (Outside IR35) Please reach out to ross@understandingsolutions.com for more information on this role. Apply with your up to date CV for consideration.

  • Software Engineer

    2 weeks ago

    Cardiff, CF AY, United Kingdom Performance Software Full time £600,000 - £840,000 per year

    Performance Software (a U. S. company) and Auvation (a UK company) have merged to create midsize companies with a great work-life balance, providing innovative software and hardware to our client companies. We are looking for passionate Software Engineers to design and develop software solutions for state-of-the-art safety-critical systems in the areas of...

  • Software Engineer

    2 weeks ago

    Cardiff, CF AY, United Kingdom Performance Software Full time £50,000 - £70,000 per year

    Performance Software (a U. S. company) and Auvation (a UK company) have merged to create midsize companies with a great work-life balance, providing innovative software and hardware to our client companies. We are looking for passionate Software Engineers to design and develop software solutions for state-of-the-art safety-critical systems in the areas of...

  • Systems Engineer

    2 weeks ago

    Cardiff, CF AY, United Kingdom Performance Software Full time £40,000 - £65,000 per year

    Performance Software (a U. S. company) and Auvation (a UK company) have merged to create midsize companies with a great work-life balance, providing innovative software and hardware to our client companies. We are looking for passionate Systems Engineers to design and develop solutions for state-of-the-art safety-critical systems in the areas of Avionics and...

  • Software Engineer

    4 weeks ago

    united kingdom, united kingdom Digital Waffle Full time

    A fast-growing AI-driven SaaS company is hiring three Senior Software Engineers to join its engineering team. These are hands-on roles with a strong backend and architectural focus, ideal for engineers who enjoy working in scale up or startup environments and want to build high-quality, cloud-native software that powers real-world automation.You’ll be part...

  • Software Engineer

    1 week ago

    United Kingdom Digital Waffle Full time

    A fast-growing AI-driven SaaS company is hiring three Senior Software Engineers to join its engineering team. These are hands-on roles with a strong backend and architectural focus, ideal for engineers who enjoy working in scale up or startup environments and want to build high-quality, cloud-native software that powers real-world automation. You’ll be...

  • Senior Software Engineer

    1 week ago

    United Kingdom Burns Sheehan Full time

    Senior Software Engineer - Data Platform (and AI) - Remote - £70,000 - £85,000Role: Senior Software Engineer - working on a Data PlatformSalary: £70,000 - £85,000Location: Remote in the UKTechnologies: Primarily PythonOne of our longest and most established contacts is on the lookout for a Senior Software Engineer to join his Data Platform team. This...

  • Senior Software Engineer

    1 week ago

    United Kingdom Burns Sheehan Full time

    Senior Software Engineer - Data Platform (and AI) - Remote - £70,000 - £85,000 Role: Senior Software Engineer - working on a Data Platform Salary: £70,000 - £85,000 Location: Remote in the UK Technologies: Primarily Python One of our longest and most established contacts is on the lookout for a Senior Software Engineer to join his Data Platform team....

  • Software Engineer

    6 days ago

    United Kingdom LanceSoft UK Full time

    Job Description: As an OS Frameworks Engineer, you will contribute to building innovative hardware and software that profoundly redefine how people work, play, and connect. What we create today has the potential to become the norm tomorrow. Responsibilities: • Understand industry and technology trends in computing technology to assess and develop new...

  • Software Engineer

    2 weeks ago

    United Kingdom Taskify AI Full time

    Job Title– Software EngineerAI Jobs is hiring for one of the global players in the artificial intelligence industry, seeking talented Software Engineers to help build and optimize next-generation machine learning systems. This role involves working with highly scalable infrastructure, advanced service layers, and real-world systems engineering...

  • Senior Software Engineer

    4 days ago

    United Kingdom OptumUK Full time

    The Vacancy Are you a Senior Software Development Engineer looking to join a company where your work truly makes a difference? Where you’re empowered to innovate, collaborate, and help shape the future of healthcare technology? Then this could be the opportunity for you. We’re looking for a talented Senior Software Development Engineer to join our EMIS-X...