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3 senior software engineer jobs found in London

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London senior software engineer £700 and up
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Greater London  (3)
Outside Spy
Jun 16, 2026
Duration not stated
Senior Data & ML Engineer at DW Search, London Area, £650-£750 per day
£650 - £750 per day
Outside Spy London Area, United Kingdom
Senior Data & ML Engineer Contract - Outside IR35 - Initial 6 month contract £650-£750 per day London - Hybrid working We are partnering with a rapidly growing financial services business that is investing heavily in its machine learning and data platform capabilities. This is a hands-on engineering role focused on helping Data Science teams build, deploy, and scale machine learning solutions in production. The work sits at the intersection of data engineering, machine learning engineering, and MLOps, with a strong focus on production systems, feature engineering, workflow orchestration, and model lifecycle management. What you'll be doing Design and build scalable data and feature engineering pipelines to support machine learning workloads Work closely with Data Scientists to operationalise models and improve the end-to-end machine learning lifecycle Develop and optimise PySpark-based data processing workflows and training pipelines Build and...
Outside Spy
Jun 11, 2026
Duration not stated
Lead Platform Engineer (Contract) at Intec Select, City Of London, £700–£800 per day
£700–800 per day
Outside Spy City Of London, England, United Kingdom
Lead Platform Engineer Python | Cloud | Terraform | IAM | DevOps | Infrastructure-as-Code (IaC) Rate: Circa £700–£800 per day (Outside IR35) Contract Length: 6 Months Location: London / Hybrid (2 days per week) Overview We are seeking an experienced Principal / Lead Engineer to join a highly ambitious organisation building a large-scale, mission-critical data and technology platform. This is a unique opportunity to join at the earliest stages of a major programme and play a key role in shaping its technical foundation. Working closely with the CTO and a small team of senior engineers, you will lead the design and implementation of core infrastructure, establish engineering standards and practices, and make architectural decisions that will have long-term strategic impact. If you enjoy solving complex technical challenges, influencing technology strategy, and creating robust engineering foundations, this role offers an exceptional opportunity to make a...
Outside Spy
Jun 03, 2026
Duration not stated
Senior Frontend Developer at CipherTek Recruitment, London, £800 per day
£800 per day
Outside Spy London, England, United Kingdom
🚀 Senior Front-End Engineer – Investment Banking | Contract Upto £800 p/d (Outside IR35) | London / Hybrid (1 Day/Week in Office) We are partnering with a global investment bank to hire a Senior Front-End Engineer to join a flagship team delivering a next-generation, single-page application (SPA) platform for high-performance derivatives trading. This is a high-profile role on a mission-critical, front-office system with exceptional technical standards. You’ll work at the cutting edge of financial technology, contributing to a modern, reactive web platform used across trading desks. This is not your typical enterprise UI – it’s fast, data-intensive, and built to scale with real-time demands in a trading environment. 💼 The Opportunity Collaborate with elite engineers on a SPA used across the investment bank for derivatives trading. Build elegant, high-performance UIs with real-time data updates and functional programming paradigms. Shape a front-end...
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