Senior Software Engineer

G MASS Consulting · London · £100,000 (stated in the posting)

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G MASS are currently looking for an experienced Software Engineer to join a leading Investment Manager client. This role sits within a core engineering team at the centre of a highly quantitative investment environment, supporting the technology and data platforms that underpin systematic trading strategies and advanced research.

You will be working in a fast-paced, data-driven environment where engineering plays a critical role in enabling investment teams to access, process and utilise large volumes of market and research data.

Responsibilities

• Design, develop and enhance large-scale data and infrastructure platforms supporting trading and research.
• Build and maintain systems capable of processing large volumes of data from numerous global sources.
• Work closely with researchers, traders and engineers to ensure platforms effectively support investment workflows.
• Contribute to improving the scalability, performance and reliability of distributed systems.
• Develop and maintain services primarily using Java and Python.
• Work across modern data and messaging technologies including Kafka, ArcticDB and MongoDB.

Requirements

• Degree in a quantitative/technical field (e.g. Computer Science, Mathematics, Engineering or Physics)
• 5+ years’ software engineering experience using Java or Python
• Strong Linux and Git knowledge
• Experience with modern databases (e.g. Postgres, MongoDB or similar)
• Strong problem-solving skills and attention to detail
• Able to work independently and collaborate with stakeholders

Nice to have

• Exposure to distributed systems
• Open-source contributions
• Familiarity with LLMs / AI tooling

Benefits

Salary: up to £100k

Permanent contract.

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