36 senior data engineer jobs found in London

Senior Data Engineer (outside IR35 contract)   London | Fleixble, hybrid working pattern | Outside IR35 | 12 month engagement   We're looking for a Senior Data Engineer who understands that great data engineering is about building reliable, scalable data products, not simply moving data from A to B. This is an opportunity to shape modern data platforms, solve complex engineering challenges, and deliver data solutions that create genuine business value.   You'll join an organisation investing heavily in its data capabilities, working alongside architects, analysts, data scientists, and engineering teams to build robust, production-grade data platforms that support analytics, AI, and operational decision-making.   Why join   Work on large-scale data and cloud transformation initiatives Influence architecture, engineering standards, and platform strategy Deliver solutions that have measurable business impact...

Senior Data Engineer London | Flexible, hybrid working pattern | Outside IR35 | 12-month engagement We're looking for a Senior Data Engineer to shape modern data platforms, solve complex engineering challenges, and deliver data solutions that create business value. You'll join an organisation investing heavily in its data capabilities, working alongside architects, analysts, data scientists, and engineering teams to build production-grade data platforms supporting analytics, AI, and operational decision-making. Why Join? Work on large-scale data and cloud transformation initiatives Influence architecture, engineering standards, and platform strategy Deliver solutions with measurable business impact Join a collaborative team of experienced data professionals Responsibilities Design, build, and maintain scalable data products and pipelines Own solutions from requirements gathering through to deployment and monitoring Develop cloud-native data platforms using...

Senior Data Engineer   London | Fleixble, hybrid working pattern | Outside IR35 | 12 month engagement   We're looking for a Senior Data Engineer who understands that great data engineering is about building reliable, scalable data products, not simply moving data from A to B. This is an opportunity to shape modern data platforms, solve complex engineering challenges, and deliver data solutions that create genuine business value.   You'll join an organisation investing heavily in its data capabilities, working alongside architects, analysts, data scientists, and engineering teams to build robust, production-grade data platforms that support analytics, AI, and operational decision-making.   Why join   Work on large-scale data and cloud transformation initiatives Influence architecture, engineering standards, and platform strategy Deliver solutions that have measurable business impact Join a collaborative team...

Senior Full Stack Data Quality Engineer Assignment type: Outside IR35 The supplier will be engaged to provide specialist hands-on data quality engineering services to the Finance & Data Reporting Product Team across TMHCC’s modern data platform testing, data quality engineering, and test automation. The engagement is focused on delivering agreed testing and automation outcomes across defined operational assurance priorities and initiative delivery outcomes. The supplier will validate data across the full data lifecycle, including ingestion, transformation, data lake, data warehouse, reporting and BI, APIs, metadata, lineage, and reconciliation. Assignment Tasks / Deliverables Full Stack Data Quality Engineering Design and execute data quality testing across ingestion, transformation, warehouse, reporting/BI, APIs, metadata, lineage, and reconciliation layers. Validate Snowflake data lake and data warehouse outputs against source systems, business...

Senior Product Engineer – Python / React | £650/day Outside IR35   Up to £650/day | Outside IR35 | 6 Months | Shoreditch, London   I’m working with an exciting early-stage HealthTech business that is building a highly ambitious consumer healthcare product from the ground up.   They have an exceptionally experienced founding team with a strong track record of building, scaling and exiting successful technology businesses , and are now growing the engineering team at a key stage of the company's journey.   They’re looking for an experienced Product Engineer who wants genuine ownership - working closely with the founders and engineering team to take problems from initial idea through to production and customer feedback.   This isn't a ticket-driven engineering role. They need someone who enjoys building, shipping and making product decisions .   Key experience: Excellent...

🚨 Senior Product Engineer | HealthTech | Outside IR35 | £550-600/day Few&Far are partnered with one of the most ambitious early-stage HealthTech businesses I’ve come across, and they’re adding another engineer to the team. This is additional headcount, taking the engineering team to 7. They only want the best of the best!! They’re building a category-leading consumer healthcare product designed to help people understand their health, prevent illness and ultimately live healthier for longer. The platform brings together: 🩺 Blood testing & health data 👨 ⚕️ Dedicated doctors, PTs, nutritionists & specialists 🤖 AI-driven health insights 💬 Messaging & care team access 🏋️ Workouts & nutrition tracking 🏥 NHS record integration 📱 Consumer-facing React Native applications What are they looking for? 🐍 Excellent Python engineering skills, Python is at the core of the stack 🚀 Zero-to-one experience, someone who has built new...

Data Protection / Data Governance Engineer 3 Month Contract | Outside IR35 | £560- £640 per day London (1 day per week) A leading digital media and technology business is looking for a Data Protection / Data Governance Engineer to lead a critical governance transformation across a large-scale Google Cloud environment. This is a hands-on contract focused on moving data governance from policy into practice. The organisation already has governance frameworks in place but now requires an experienced contractor to establish ownership, implement technical controls, and ensure governance is embedded across its cloud and data platforms. You 'll work closely with Legal, the DPO, Platform Engineering and senior leadership to build a scalable governance capability that balances compliance with business agility. The Role Over a 12-week engagement, you will assess and improve a complex GCP estate, implement governance controls, and establish processes that...

Senior Full Stack Developer - C#/Azure/Kafka Internal Title: Software Engineering Senior Consultant Location: London, UK (Hybrid - typically 1-2 days per week in office/client site) Contract: 6-month rolling contract Rate: £600-650 per day, Outside IR35 Start: ASAP About Appvia Appvia is a specialist cloud, platform, and solutions engineering consultancy, helping organisations modernise software systems, improve developer productivity, and adopt cloud-native practices that enable long-term, sustainable delivery. Our software engineering capability focuses on modern application development, cloud-native architecture, event-driven systems, and improving delivery outcomes through better engineering practices. We work across complex, high-impact environments in both the public and private sector, delivering solutions where quality, scalability, reliability, and security are critical. About the Role We’re looking for a Senior Full...

Senior Python Engineer - AI & Microservices £450 PD (Outside IR35) | 3-to-6-month Contract | 2 days onsite in London (Hybrid) | ASAP Start Our trusted technology partner is developing innovative products and is looking for an experienced Senior Python Engineer/Back End Developer to join a fast-moving team. You will develop Python microservices, scalable services, voice chat, and data pipelines, using AI technologies including ASR, TTS, and LLMs. The ideal candidate will have strong Python skills, a pragmatic delivery-focused approach, and the ability to take ownership in a fast-paced, evolving environment. Key Responsibilities: Develop and maintain scalable Python services, microservices, voice chat, and data pipelines. Work with the Tech Lead and wider team on architecture, technical decisions, and solution design. Collaborate with product, data science, QA, design, and subject matter experts to deliver new features. Ensure applications meet high standards for...

Senior Python Engineer - AI & Microservices £450 PD (Outside IR35) | 3-to-6-month Contract | 2 days onsite in London (Hybrid) | ASAP Start Our trusted technology partner is developing innovative products and is looking for an experienced Senior Python Engineer / Back End Developer to join a fast-moving team. You will develop Python microservices, scalable services, voice chat, and data pipelines, using AI technologies including ASR, TTS, and LLMs. The ideal candidate will have strong Python skills, a pragmatic delivery-focused approach, and the ability to take ownership in a fast-paced, evolving environment. Key Responsibilities: Develop and maintain scalable Python services, microservices, voice chat, and data pipelines. Work with the Tech Lead and wider team on architecture, technical decisions, and solution design. Collaborate with product, data science, QA, design, and subject matter experts to deliver new features. Ensure...

A public sector organisation is seeking a Senior AWS Platform Engineer to join via a Consultancy to join a strategic programme delivering and evolving a cloud-based occupancy data platform hosted within AWS. The platform ingests and processes data from a range of sources including WiFi networks, IoT sensors and wider property technology systems, generating occupancy insights that support data-driven decision making across a large-scale estate. As the Senior AWS Platform Engineer you will play a key role in the design, build and support of the cloud infrastructure, integrations and automation capabilities that underpin the platform. This is an excellent opportunity for an experienced AWS specialist who enjoys solving complex technical challenges, building cloud-native services and working across platform engineering, DevOps and systems integration. This is an initial contract until May 2027 with potential to be extended, it is one day per week in the office in Central...

Role Overview: As a Senior Architect in Private Cloud, you'll provide hands-on technical leadership across Client’s private cloud platform, shaping and improving our virtualisation, container and Kubernetes capabilities, and enabling resilient, secure, high-performing services (including Kafka-based event streaming and microservices platforms). Reporting to the Head of Private Cloud, you'll partner closely with Product Owners, architects and engineering teams across CTO to turn strategy into practical, well-engineered outcomes. Role Details: Job Title: Private Cloud Senior Architect Client Domain: Banking Client. Contract Duration: 6 months (high possibility of extension) Work Mode: Hybrid (2–3 days per week in the London office) Location: London, UK (Outside IR35) Start Date: ASAP Key responsibilities Architectural design decisions in line with Client Cloud Strategy. Set engineering direction for private cloud capabilities spanning...

Robert Half has partnered with a market-leading Financial Services organisation to recruit a Full Stack Engineer for an initial 6 months. London based - 3 days per week onsite We are looking for an experienced Senior Full Stack Engineer to take an established Corporate Governance platform prototype through final development, testing and into production. The platform modernises an existing ASP.NET/on-premises SQL application and is now built using React, Node.js, TypeScript, Azure SQL and Azure Web Apps, within a Microsoft 365 environment. A strong prototype has already been developed, providing the baseline for the next phase. The successful candidate will take ownership of turning this into a robust, scalable and production-ready application. Key Responsibilities: Take the existing prototype through development, testing and production. Work across React, Node.js, TypeScript and Azure SQL. Improve the data model and database architecture, addressing current...

Contract Cyber Security Analyst / Engineer 💷 Salary: £400 a day - Outside IR35 📍 Location: City - London 📅 Working pattern: Hybrid – Office presence required in London weekly I'm supporting a growing transport organisation that is looking to hire a Cyber Security Analyst / Engineer to strengthen its IT Security function as part of an ongoing security improvement programme. This is a hands-on role within an established IT Security team, covering security operations, incident response, vulnerability management, and risk assessment across a large enterprise environment. The role You will work across the full breadth of the security operations lifecycle, including: Using security tooling to identify, correlate and contain suspicious events, determine root cause, and recommend improvements to systems and procedures. Performing deep-dive incident analysis across multiple data sources, investigating security logs against short and medium-term threats and indicators...

Senior C# Engineer – .NET 9/10, AWS Lambda, SQS, SNS – OUTSIDE IR35 £700–£800 per day • Outside IR35 ? 100% Remote • 11 month rolling contract Takeaway: Contribute to the architecture and build of a major greenfield B2B SaaS platform as a deeply senior, hands-on C# engineer, with heavy emphasis on deep .NET engineering , high-performance distributed systems , and real-world AWS serverless delivery . You’ll also have the opportunity to develop hands-on skills with Claude Code , one of the most advanced AI-assisted development tools in the industry. Role Overview: You’ll operate as the technical spearhead for a greenfield product build, reporting to the Director of Engineering. Expect deep backend engineering, distributed system design, and high-quality serverless delivery, plus the chance to adopt modern AI-assisted development practices as part of your workflow. What You’ll Bring: Senior/Staff-level backend mastery in C# and .NET 9/10 , with...

Senior Python Engineer – AI & Microservices £450 PD (Outside IR35) | 3-to-6-month Contract | 2 days onsite in London (Hybrid) | ASAP Start Our trusted technology partner is developing innovative products and is looking for an experienced Senior Python Engineer / Back End Developer to join a fast-moving team. You will develop Python microservices, scalable services, voice chat, and data pipelines, using AI technologies including ASR, TTS, and LLMs. The ideal candidate will have strong Python skills, a pragmatic delivery-focused approach, and the ability to take ownership in a fast-paced, evolving environment. Key Responsibilities: Develop and maintain scalable Python services, microservices, voice chat, and data pipelines. Work with the Tech Lead and wider team on architecture, technical decisions, and solution design. Collaborate with product, data science, QA, design, and subject matter experts to deliver new features. Ensure applications meet...

Senior AI Engineer (BioTech/Pharma) Outside IR35 Contract £600 - 700pd Hybrid, Oxford 6 Months Harvey Nash are working with an exciting consultancy who are looking to bring on a highly experienced AI Engineer to support on a crucial project within the BioTech/Pharma space. Industry domain knowledge would be beneficial. Key Technical Skills Required Senior Python engineer with strong production software engineering experience. Commercial experience building LLM, agentic AI or multi-agent systems. Hands-on experience with LangGraph, LangChain, Haystack or similar frameworks. Proven ability to deploy AI/ML systems into production environments. Strong knowledge of inference, latency, performance, data pipelines, memory and tool/function calling. Experience with large-scale search and retrieval, including embeddings, indexing and querying multi-modal datasets. Confident with Docker, Git and cloud platforms, ideally AWS. Understanding of secure deployments,...

Senior Applied AI Engineer – Private Sector Location: Harwell, Oxfordshire – Hybrid (2 days per week on site, remainder remote) Contract: 6 months initially, with strong potential for extension Day Rate: £700–£900 per day, depending on experience IR35: Outside IR35 Start Date: Immediate About the Role We are working with a fast-growing UK frontier technology company developing advanced AI systems for organisations operating in complex, high-stakes environments. The business is looking for a Senior Applied AI Engineer to take genuine technical ownership of the design and delivery of production-grade agentic AI systems. This is a builder's role rather than an integration role . You will design and implement sophisticated AI systems from the ground up, make architecture-level decisions, write production-quality software and own features through to deployment. The focus is on turning rapidly evolving AI capabilities into reliable, scalable systems that deliver...

Technical Project Manager - Data Segregation & Security Location: London/Hybrid - minimum 2 days per week in the London office Contract: Outside IR35/6 months Initial We're looking for an experienced Technical Project Manager to lead a high-profile, enterprise-wide data segregation and security programme within a major UK media and entertainment organisation. Following a significant business transaction, the organisation is undertaking a complex technology separation programme to logically isolate one part of the business from retained corporate and studio operations, ahead of a future divestiture. This is a business-critical programme operating under significant regulatory scrutiny , with key audit and delivery milestones running through 2027. You'll be responsible for orchestrating the delivery of complex technical controls across a large-scale Google Workspace environment, ensuring the organisation can meet its regulatory commitments while maintaining business...

Client is a household name UK bank 6 month initial contract - possibility to extend Target start date 28 September Discovery project looking at the entire bank's CMS platform, and making recommendations on upgrading / improving capability and redesigning the platform. Joining a cross-functional team of 6 (engineering, delivery lead, product) Immediate interviews Ltd company outside IR35 or Umbrella contract. £Competitive day rate 2 days / week in person working (Old Street OR Canary Wharf) Founded in 2010 by Stuart, Cain and David, we help large organisations improve their speed to market whilst focusing on delivering value to their users and customers. We work with our clients to understand their problems and validate ideas to deliver improved process efficiencies, strategic enhancements, and new digital products and services (or make significant improvements to existing ones). You are a people person. As a trusted consultant, you develop rapport with...