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14 system engineer jobs found in London

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London system engineer £500 - £600
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Greater London  (14) Remote  (1)
Outside Spy
Apr 21, 2026
up to 6 Months
Operational Technology Architect - London - Outside IR35 at TrinIT Group, London, 3 Months, £500 per day
£500 per day
Outside Spy London, UK
TrinIT Talent are looking for a OT Architect to come on board for a 3 month contract based in Location. This role falls Outside of Scope of IR35 and is paying £500 per day. Job Title: OT Architect Role Summary The OT Architect is responsible for designing, governing, and enabling seamless integration between Operational Technology (OT) and Information Technology (IT) environments. The role ensures secure, scalable, and standardized architectures that support manufacturing, industrial operations, data platforms, and enterprise systems while adhering to cybersecurity and operational reliability requirements. Key Responsibilities OT-IT Architecture & Standardization Define OT-IT integration architecture, standards, and design blueprints Align OT systems with enterprise IT, cloud, and security architectures Apply Purdue Model and zone-based design principles Ensure compliance with ISA/IEC 62443 and enterprise security policies Planning, Assessment...
Outside Spy
Apr 21, 2026
6 Months or more
Senior Data Engineer at Gravitas Recruitment Group Ltd, City of London, 6 Months, £500-£600 per day
£500 - £600 per day
Outside Spy City of London, UK
Contract Data Engineer Location: London (Hybrid) Contract: 6 months+ (likely extension) IR35: Outside Start: ASAP Overview Data Engineer required to support a finance transformation programme within a digital financial services business. Focus on modernising financial data systems and replacing manual processes with scalable, cloud-based solutions. Responsibilities Work closely with finance stakeholders Design and deliver data integrations and data products Bring General Ledger into the central reporting repository Integrate a Treasury Management System into central data and automate accounting postings Build curated finance data marts for self-service reporting Enable near Real Time reporting capability Operate as a proactive, autonomous contributor within a Scrum team Support experimentation with agentic AI tools (eg Claude, ChatGPT) for discovery and requirement definition Requirements Must-Have: Strong finance domain knowledge Extensive AWS data...
Outside Spy
Apr 16, 2026
Duration not stated
Principle AI Data Engineer (contract) at Opus Recruitment Solutions, London, £525 to £575 per Day
£525 - £575 per day
Outside Spy London, UK
Principal AI / Data Engineer (Contract): Length:  3 months initally (extension is likely)  Start Date:  ASAP  Location:  London, Hybrid (1 day per week)  Pay Rate / Determination: £525-575 p/d | Outside IR35  About:  Opus is supporting a UK-based digital consultancy partnering with organisations to design, build and scale high‑impact digital and AI‑driven products, with a strong people‑first culture. The role:  A hands‑on Principal AI / Data Engineer contract to assess, shape and deliver improvements to a live AI platform across two critical workstreams. You'll be responsible for: Assessing the current AI and data platform and define clear, actionable improvements Lead on delivery across two workstreams, aligning product, data and engineering Improving the natural language data exploration platform, focusing on trust and semantic consistency Designing and implementing scalable, multi‑source data pipelines and architecture About you: Strong experience with...
Outside Spy
Apr 16, 2026
up to 6 Months
Principle AI Data Engineer (contract) at Opus Recruitment Solutions Ltd, London, 3 Months, £525-£575 per day
£525 - £575 per day
Outside Spy London, UK
Principal AI/Data Engineer (Contract): Length: 3 months initially (extension is likely) Start Date: ASAP Location: London, Hybrid (1 day per week) Pay Rate/Determination: £525-575 p/d | Outside IR35 About: Opus is supporting a UK-based digital consultancy partnering with organisations to design, build and scale high impact digital and AI driven products, with a strong people first culture. The role: A hands on Principal AI/Data Engineer contract to assess, shape and deliver improvements to a live AI platform across two critical workstreams. You'll be responsible for: Assessing the current AI and data platform and define clear, actionable improvements Lead on delivery across two workstreams, aligning product, data and engineering Improving the natural language data exploration platform, focusing on trust and semantic consistency Designing and implementing scalable, multi source data pipelines and architecture About you: Strong experience with...
Outside Spy
Apr 16, 2026
Duration not stated
Data Migration Engineer - Outside IR35 - Remote at Tenth Revolution Group, City of London, £450-£500 per day
£450 - £500 per day
Outside Spy Remote (City of London, UK)
Data Migration Engineer - Outside IR35 - Remote Overview We are seeking an experienced Data Migration Analyst/Engineer to support a major data warehouse rebuild for a wealth management firm undergoing a large-scale system and data migration programme. Working closely with the Lead Data Engineer, this role will play a critical part in ensuring the new data warehouse accurately replicates existing outputs, while identifying and resolving any data gaps introduced during migration. This is a hands-on role requiring strong analytical capability, deep SQL expertise, and experience working in complex, regulated data environments. Key Responsibilities Perform source-to-target mapping , documenting field-level lineage across systems and transformation layers Analyse and interpret complex Legacy SQL stored procedures (including multi-CTE logic, temp tables, and parameterised pipelines) Support data migration validation , ensuring accuracy and completeness of migrated datasets...
Outside Spy
Apr 21, 2026
Duration not stated
Senior Software Engineer at Arrows, London Area, £600 per day
£600 per day
Outside Spy London Area, United Kingdom
🚀 Principal Engineer (Contract) – Insurtech | £600/day Outside IR35 I’m working with a high-growth Insurtech scale-up looking for a Principal Engineer to lead a major platform modernisation. 💰 Up to £600/day (Outside IR35) 📆 Initial 2-month contract (strong extension potential) ⚡ One-stage interview – moving fast The role: Own and shape architecture for large-scale, cloud-native systems Drive platform modernisation and technical strategy Mentor senior engineers and influence multiple teams Bridge business goals with technical delivery Tech: Golang, modern backend systems AWS (Lambda, DynamoDB) + exposure to Azure Terraform / IaC, containers Bonus: .NET, TypeScript, React This is a high-impact role in a business investing heavily in its next growth phase. 👉 Interviews are happening now – apply ASAP or message me directly to discuss.
Outside Spy
Apr 21, 2026
Duration not stated
Cloud Platform Engineer at Dynamic Search Solutions, London Area, £600 per day
£600 per day
Outside Spy London Area, United Kingdom
Location: London (3 days per week onsite) Contract: 6 months initial (high likelihood of extension) Rate: £600 per day Outside IR35 The Opportunity We are working with a leading financial services organisation undergoing a major cloud-native transformation programme, centred around a large-scale Kubernetes and microservices adoption initiative. This is a hands-on engineering role where you will help design, build, and stabilise the core platform layer that underpins mission-critical financial systems. You will be joining a high-performing engineering environment focused on scalable, resilient, and production-grade cloud infrastructure. What You’ll Be Working On Building and scaling Kubernetes-based infrastructure (EKS / AKS / GKE equivalent environments) Supporting a large-scale microservices migration from legacy systems Designing and implementing cloud-native platform capabilities (CI/CD, observability, automation) Developing and improving...
Outside Spy
Apr 20, 2026
6 Months or more
AI Full Stack Engineer at SR2 - Socially Responsible Recruitment, London, 6 Months, £600-£650 per day
£600 - £650 per day
Outside Spy London, UK
AI Full Stack Engineer Fully Remote - Outside IR35 - £600-£650/day 6 months + Contract We're working with a major player in the pharmaceutical space who are investing heavily in cutting-edge AI, and they're looking for an AI Full stack Engineer to join them on a fully remote, outside IR35 contract. This isn't just another dev role. You'll be building intelligent, agent-driven systems that do things, not just sit in a demo environment. What you'll be doing You'll be working across the stack to design and deliver AI-powered applications, with a strong focus on agentic workflows and real-world impact. Expect a fast-moving environment where ideas go live quickly. Skills Agentic AI/AI systems (LLMs, autonomous workflows, etc.) TypeScript & React (solid Front End capability) Python (core Back End/AI work) FastAPI (or similar modern frameworks) Why this role? Outside IR35 Fully remote Day rate: £600-£650 To be considered for this exciting contract, please...
Outside Spy
Apr 15, 2026
up to 6 Months
Cyber Security Engineer at TalentTrade Recruitment, London, 3 Months, £600-£650 per day
£600 - £650 per day
Outside Spy London, UK
Cyber Security Engineer Microsoft Purview (Insider Risk) Location: London (Hybrid) Duration: 2 3 months Rate: £600 650 per day (Outside IR35) We re supporting a leading financial services organisation on an urgent requirement within their Cyber Security Engineering team. This role is focused on delivering a series of critical integrations into Microsoft Purview, helping enhance Insider Risk capabilities across a complex, regulated environment. The Opportunity You ll join an established Cyber Security Engineering function, working within a Kanban-based agile team to deliver a backlog of high-priority integrations into Microsoft Purview. This is a hands-on role suited to someone who enjoys building and integrating solutions directly, rather than operating at a purely strategic level. You ll play a key role in improving how data is ingested, monitored and acted upon within Purview, working across multiple systems and security platforms. Key...
Outside Spy
Apr 15, 2026
6 Months or more
AI Enigneer- 12 month contract at Opus Recruitment Solutions Ltd, London, 12 Months, £500-£600 per day
£500 - £600 per day
Outside Spy London, UK
Skills Python, TypeScript LLM frameworks (LangChain, LlamaIndex, OpenAI tools, Semantic Kernel) Vector databases (Pinecone, Weaviate, Chroma) Cloud (AWS/Azure/GCP) Docker, Kubernetes CI/CD, observability, testing for AI systems Experience Strong experience building LLM applications, RAG systems, or AI agents Understanding of prompt engineering, tool-calling, and orchestration frameworks Ability to work autonomously in a scale up environment A product-focused mindset - you enjoy owning features end to end Curiosity, creativity, and a genuine passion for AI Understanding of start/scale up environments Details 12 month contract Fully remote (London office optional) £500-600p/d (outside IR35)
Outside Spy
Apr 14, 2026
Duration not stated
Senior Data Engineer/ Machine Learning Engineer at DW Search, London Area, £600-£700 per day
£600 - £700 per day
Outside Spy London Area, United Kingdom
Contract Data Engineer / MLE (Databricks, GCP) Location: London (hybrid) Contract: Outside IR35 Day Rate: Negotiable ~ £600-£700 DW Search are partnering on a high-impact contract opportunity within a fast-paced, data-driven environment supporting portfolio company initiatives for a major asset management firm. This role sits at the intersection of Data Engineering and Machine Learning Engineering, with a strong focus on building and productionising end-to-end ML pipelines. You will be working on real-world applications of neural networks, enabling scalable feature engineering, model training, and inference in production. Key Responsibilities Build and productionise feature engineering pipelines for ML models Develop and manage training and inference workflows at scale Deploy and monitor machine learning models in production environments Collaborate with data scientists and engineering teams to optimise model performance and reliability Contribute...
Outside Spy
Apr 14, 2026
Duration not stated
AI Enigneer- 12 month contract at Opus Recruitment Solutions, London, £500 to £600 per Day
£500 - £600 per day
Outside Spy London, UK
Skills Python, TypeScript LLM frameworks (LangChain, LlamaIndex, OpenAI tools, Semantic Kernel) Vector databases (Pinecone, Weaviate, Chroma) Cloud (AWS / Azure / GCP) Docker, Kubernetes CI/CD, observability, testing for AI systems Experience Strong experience building LLM applications, RAG systems, or AI agents Understanding of prompt engineering, tool-calling, and orchestration frameworks Ability to work autonomously in a scale‑up environment A product-focused mindset — you enjoy owning features end‑to‑end Curiosity, creativity, and a genuine passion for AI Understanding of start/ scale up environments Details 12 month contract  Fully remote (London office optional)  £500-600p/d (outside IR35)
Outside Spy
Apr 13, 2026
up to 6 Months
Security Engineer at Tria Recruitment, London, 3 Months, £500-£550 per day
£500 - £550 per day
Outside Spy London, UK
Security Engineer - Hybrid London - £500 outside IR35 We are working with a fast-growing, premium retail company to find a hands-on Security Engineer who can design, deploy, and integrate security solutions across cloud, infrastructure, and data platforms. This is an engineering-focused role, not a policy or compliance position. You will play a critical role in protecting customer, payment, and operational data across an omnichannel environment, including e-commerce, mobile, marketplaces, and back-office systems. Key responsibilities include: Implement and manage security controls across cloud, network, infrastructure, and data systems Secure end-to-end data pipelines and analytics platforms Collaborate with security, IT, and engineering teams to embed security into architecture and deployment pipelines Apply encryption, access control, and monitoring across all environments Contribute to threat detection, incident response, and continuous improvement Skills &...
Outside Spy
Apr 02, 2026
Duration not stated
Senior Software Engineer (Contract / SC Essential) at Softwire, London Area, £550 per day
£550 per day
Outside Spy London Area, United Kingdom
Senior Software Engineer - Outside IR35 - Contract - Current SC Essential We're hiring a Senior Software Engineer to join a high-impact government programme of work. This is an outside IR35 contract with a strong potential for extension beyond the initial 6-month term, making it a great opportunity for experienced contractors looking for stability and interesting work. The project sits within a complex, delivery-focused environment where your engineering decisions will genuinely matter. You'll be working as part of a collaborative team building robust, scalable solutions for a public sector client. Tech Experience: Java, Spring Boot, Typescript and React. £550 per day outside IR35 Start date: 28/04/2026 End date: 30/10/2026 About Softwire Softwire is a leading UK technology and strategy consultancy. From enterprise to government, we help visionary organisations turn strategic ambitions into results at scale. Our practices cover AI...
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