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16 system engineer jobs found

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system engineer £500 - £600 Greater London
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London  (14) Remote  (1)
Outside Spy
Apr 24, 2026
Duration not stated
D365 F&O Integration Engineer / Developer at ShareForce, Greater London, £500 per day
£500 per day
Outside Spy Greater London, England, United Kingdom
D365 F&O Integration Engineer / Developer | Contract | £500 per day | Outside IR35 | UK Remote / Hybrid Overview We are looking for an experienced D365 F&O Integration Engineer / Developer to support a high-profile transformation programme. This role will focus on designing, building and optimising integrations between Microsoft Dynamics 365 Finance & Operations and a range of external systems. This is a hands-on contract role suited to someone who is comfortable operating across architecture, development and delivery in a fast-paced environment. Key Responsibilities Design and build integrations between D365 F&O and third-party systems Develop and maintain APIs, data pipelines and middleware solutions Work with stakeholders to understand integration requirements and translate into technical solutions Support data migration and system interoperability across the wider platform Troubleshoot and resolve integration issues across environments...
Outside Spy
Apr 24, 2026
up to 6 Months
Software Engineer (Java Focus) | up to £650 Outside IR35 | Active SC Clearance Required at Solirius Limited, London, 3 Months, to £650 per day Outside IR35
£550 - £650 per day
Outside Spy London, UK
Software Engineer (Java Focus) | up to £650 Outside IR35 | Active SC Clearance Required | 1 day a week on site in London Key Responsibilities Develop end-to-end web applications using Java 21/Kotlin (Spring Boot 3) and modern frontends utilising TypeScript and Nunjucks templates. Build and consume secure RESTful APIs and complex Middleware solutions that integrate seamlessly with distributed government systems. Architect asynchronous messaging patterns , utilising message brokers to handle high-volume, event-driven data flows and system-to-system communication. Design and maintain polyglot persistence layers , including SQL (PostgreSQL) and NoSQL databases, ensuring optimal schema design and data integrity. Own the full testing life cycle by adopting a "Devs-as-Testers" philosophy, writing comprehensive unit, integration, and end-to-end tests for every feature delivered. Manage Infrastructure as Code (IaC) using Terraform and Scripting to provision and...
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 24, 2026
Duration not stated
Back End Integration Engineer - Azure at I3 Resourcing Limited, The City, London, £600-£700 per day
£600 - £700 per day
Outside Spy City of London, London, UK
Azure Back End Integration Engineer i3 London Area, United Kingdom (Hybrid) Save Apply ?? Back-End Integration Engineer (Contract Outside IR35) ?? London (Hybrid: 2-3 days onsite) ?? £700/day Outside IR35 PLEASE ONLY APPLY IF YOU HAVE THE TECHNICAL SKILLS AS FOLLOWS YOU MUST BE AVAILABLE ON SHORT NOTICE (2 WEEKS MAX) We're partnering with a top insurer as they continue to modernise their technology landscape with cloud-first platforms, integrations, and automation. This is an initial 6-month contract (Outside IR35) with a strong likelihood of extension or permanent conversion for the right candidate. Strong possibility of offer of a permanent role after or extensions. ?? The Role As a Back-End Integration Engineer , you'll play a key role in designing, building, and maintaining APIs and integration services that connect systems across the organisation. You'll be hands-on, working across cloud platforms, shaping integration patterns, and improving how data...
Outside Spy
Apr 24, 2026
6 Months or more
DevOps Engineer Outside IR35 at Sanderson Recruitment Plc, London, 6 Months, £550-£575 per day
£550 - £575 per day
Outside Spy London, UK
DevOps & Automation Lead - Contract Outside IR35 | £575/day | 12 months | London (Hybrid) We're seeking a senior, hands-on DevOps & Automation Lead to support an Enterprise Change function on a long-term contract. This is a flexible, non-project-specific role , providing DevOps expertise across multiple initiatives as demand shifts. The Role Act as a senior DevOps consultant across hybrid estates : Azure, AWS, and on-prem Build and run CI/CD pipelines , release management, and automation for multi-tier systems Lead infrastructure automation using Terraform and Ansible Support deployments across Windows, Linux, and SQL Server Produce runbooks and documentation; enable repeatable, self-service automation Collaborate with delivery managers, product owners, and engineering teams Engage with ephemeral environments and emerging agentic AI automation , with scope to self-learn GenAI tooling Essential Skills Proven senior DevOps experience across...
Outside Spy
Apr 24, 2026
Duration not stated
DevOps Engineer Outside IR35 at Sanderson , London, £550-£575 per day
£550 - £575 per day
Outside Spy London, UK
DevOps & Automation Lead - Contract Outside IR35 | £575/day | 12 months | London (Hybrid) We 're seeking a senior, hands-on DevOps & Automation Lead to support an Enterprise Change function on a long-term contract. This is a flexible, non-project-specific role , providing DevOps expertise across multiple initiatives as demand shifts. The Role Act as a senior DevOps consultant across hybrid estates : Azure, AWS, and on-prem Build and run CI/CD pipelines , release management, and automation for multi-tier systems Lead infrastructure automation using Terraform and Ansible Support deployments across Windows, Linux, and SQL Server Produce runbooks and documentation; enable repeatable, self-service automation Collaborate with delivery managers, product owners, and engineering teams Engage with ephemeral environments and emerging agentic AI automation , with scope to self-learn GenAI tooling...
Outside Spy
Apr 22, 2026
6 Months or more
Senior Full Stack Developer at IntecSelect, Tower of London, 6 Months, £450-£600 per day
£450 - £600 per day
Outside Spy Tower of London, UK
Senior Full Stack Developer (Contract) Outside IR35 | Remote | Up to £600/day Overview We're partnering with a specialist software consultancy delivering business-critical platforms across financial services and pensions. They're looking for a Senior Full Stack Developer who enjoys proper engineering - clean architecture, ownership of solutions, and working alongside experienced senior engineers and QA specialists. This is a hands-on delivery role (no line management, no ticket-factory environments) with meaningful technical influence across the full stack. What you'll be doing Designing and building end-to-end full-stack solutionsin a modern cloud environment Backend development using Python and C# Frontend development with TypeScript and React Working within Azure (Functions, Azure SQL, Service Bus, ADF) Contributing to architecture discussions, technical design, and code reviews Applying pragmatic AI-assisted/agentic engineering practices to improve delivery...
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
Duration not stated
Agentic Technical Lead at Talent International, Greater London, £600.0-£650.0 per day
£600 - £650 per day
Outside Spy Greater London, UK
Job Description: Agentic Tech Lead (Contract) Location: London 2-3 times a week Industry: Financial Services/Highly Regulated Duration: 7 Months (Initial) Rate: Outside IR35 The Opportunity We are looking for a high-calibre Agentic Tech Lead to drive the engineering delivery of a cutting-edge agentic AI platform. This isn't just about prompt engineering; it's about building robust, end-to-end systems that operate within the rigorous guardrails of a highly regulated environment. As the primary technical driver, you will bridge the gap between ambitious product goals and production-grade reality. You'll be hands-on across the stackfrom AWS Bedrock and Python services to complex React integrationsensuring that "agentic" translates to "value-driven" for our customers. The Technical Requirements To thrive in this role, you must be a seasoned engineer who can reason end-to-end across complex architectures. Core Stack: Expert-level proficiency in...
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 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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