12 data integration engineers jobs found

Who are OnCommerce?   OnCommerce is a global selling platform that powers a growing network of retail channels, including: OnBuy - The only marketplace in the world to give customers instant Cashback on everything easyShop - An all-new marketplace created in collaboration with the easy® family of brands Comet - The iconic UK tech brand making its return later this year   OnCommerce is growing fast, launching new brands and scaling to power the future of ecommerce.   Be Part of the Story OnCommerce is constantly evolving. Everyone here plays a hands-on role in shaping what comes next, building brands that make an impact across global markets. There’s no red tape or rigid corporate structure; just smart people taking ownership and figuring things out as we build something big together. The pace is fast, priorities shift, things aren’t always perfectly set up, and you’ll often need to get stuck in and...

Affiliate Network Integrations Specialist Rakuten, AWIN or CJ Location: Remote (UK-based preferred) Contract Type: Short-term contract (minimum 3 months, extension possible) Start Date: 10 August 2026 Day Rate: Ideally £650-750 per day, Outside IR35 Brief We are looking for a senior integrations contractor to connect our clients platform to the major affiliate networks: Rakuten, AWIN and CJ. Their Impact integration is already live and serves as the reference implementation. The architecture, integration pattern and draft API contract are being defined now and will exist before the start date - this is a delivery-focused engagement, not a discovery or strategy role. That said, we expect the contractor to bring real prior-implementation knowledge to bear: your first task is to critique and harden their draft contract against how these networks actually behave, not just build against it. We need someone who has implemented these specific networks...

AI SOFTWARE ENGINEER - DV CLEARED BRAND NEW OUTSIDE IR35 CONTRACT OPPORTUNITY AVAILABLE WITH A LEADING NATIONAL SECURITY CONSULTANCY FOR AN AI SOFTWARE ENGINEER Contract opportunity for an AI Software Engineer Outside IR35 Day rate up to £650 Hybrid role - London Must hold active UKSV DV clearance To apply please email or call WHO WE ARE? We are working with a specialist consultancy delivering cutting-edge AI and software solutions into the UK National Security and Defence sector. Due to continued growth and the expansion of several mission-critical programmes, we are looking for an experienced AI Software Engineer to join a high-performing engineering team in London. WHAT WILL THE AI SOFTWARE ENGINEER BE DOING? You will be designing and building AI-enabled software systems that support complex operational environments. The role will involve developing scalable backend services, integrating machine learning models into production...

Applied AI Engineer - Financial Services AI - Outside IR35 - Remote The Applied AI Engineer will be responsible for designing and deploying production AI applications for investment, credit and portfolio management teams, building enterprise LLM solutions that integrate internal and third-party data to support AI-driven financial workflows. Applied AI Engineer - Key Skills: - Proven experience building production AI applications using LLMs within Financial Services (Investment Management, Investment Banking, Asset Management, Hedge Funds, Private Credit or similar). - Must have strong understanding of RAG architectures, AI agents and enterprise AI systems, including document parsing, chunking, retrieval, re-ranking and orchestration. - Strong Python experience building production AI applications, Back End services and APIs. - Strong Azure experience, including Azure OpenAI and cloud-native AI services. - Experience deploying production AI systems using Kubernetes,...

Data Engineer - AI Data Platform - Outside IR35 - Remote The Data Engineer will be responsible for building the core data infrastructure underpinning next-generation AI products, integrating enterprise and third-party data sources, and developing scalable data services to support AI-driven applications. Data Engineer - AI Data Platform - Key Skills: - Proven experience building scalable enterprise data platforms and data infrastructure. - Must have strong understanding of AI/LLM data architectures and enabling AI agents to retrieve and prioritise enterprise data. - Investment Management background preferred - Strong Azure experience, including Azure Service Bus and cloud-native data services. - Experience developing MCP registries, connectors, and data integration frameworks. - Strong experience integrating third-party data providers (eg S&P or similar external data sources). - Experience designing universal data layers to support AI, analytics, and enterprise data...

Contract Senior Data Engineer 6-week contract | Remote | Outside IR35 | Active SC required | Immediate start I'm supporting a client looking for a hands-on Senior Data Engineer to join a high-impact programme building a secure, AI-ready data platform. You'll design and deliver production-grade data pipelines across batch and Real Time workloads, helping create a trusted knowledge layer that supports AI applications and autonomous agents. What you'll be doing Building scalable distributed data pipelines Developing batch and streaming ingestion processes Creating robust data models for structured and unstructured data Implementing data lineage, provenance and metadata management Supporting knowledge graphs, entity resolution and data fusion Integrating data platforms with AI and agent-based applications Deploying services in secure cloud and containerised environments What they're looking for Strong Python Spark/PySpark Kafka, Flink, Iceberg and Trino Data...

Lead Databricks Data Engineer £500 - £600 per day Outside IR35 London, hybrid working This freelance opportunity offers the chance to shape the future-state data platform for a large, complex financial services organisation. The focus is on moving from slow, batch-based analytics towards a more modern, streaming-led architecture, with clear ownership over data vision, use cases, and delivery direction. The Company They are a well-established organisation operating at scale within the UK financial services and pensions landscape. Managing significant volumes of legacy and live data, they work with both onshore and offshore delivery partners. The business is at a pivotal point in modernising how data is accessed, governed, and used to drive insight. Clear communication and pragmatic decision-making are highly valued. The Role and Deliverables Define a clear end-to-end data vision, covering current state, target architecture, and practical...

Senior & Lead Data Engineers - Outside IR35 - Remote 1x Lead Data Engineer Vacancies - Up to £780 Per Day Outside IR35 3x Senior Data Engineer Vacancies - Up to £635 Per Day Outside IR35 Location: London (1 day per month onsite) Duration: Initial 6-Month Contract The Opportunity We're supporting a a major household brand supporting their loyalty and rewards arm of the organisation. They are expanding its data engineering capability as part of a wider investment in its data platform. They are seeking experienced Data Engineers to build and enhance cloud-based data solutions, working alongside senior technical leadership within a modern data environment. Key Responsibilities Develop and maintain data pipelines and data products. Build and optimise data models within the data platform. Support the delivery of scalable and reliable data solutions. Contribute to code reviews and engineering best practices. Collaborate with technical stakeholders to deliver...

Senior .NET Developer - Hybrid - Up to £700/day Outside IR35 | C# | Azure | Event Driven Systems | Kafka | CosmosDB We have a unique opportunity for a Lead .NET Developer to join a payments company. As the Senior .NET/Full Stack Developer , you’ll play a key role in shaping and scaling a high-throughput payments platform as the business enters its next phase of growth. This includes launching new products, enabling new partner integrations, and expanding a platform that already powers multiple live financial services products used globally. You’ll be building on top of a modern, cloud-native platform built with .NET and Azure , designed around API-first architecture and event-driven microservices . The platform supports complex payment flows, partner integrations, and high-volume transaction processing. This is a hands-on technical role where you’ll help drive engineering best practices, contribute to architectural decisions, and mentor developers while...

Remote Contract (UK Candidates only) Ideal start date: ASAP Contract Duration: 6 Months Outside IR35 Rate: £500-600 p/d Elsewhen, a London-based consultancy, designs and builds technology solutions for clients like Spotify, Google, Inmarsat, and Zego. Over the past decade, we have built a workplace prioritising impact, drive, and friendliness. We value outcomes over hours and agility over rigid processes. Work Environment: Fully Remote in the UK Join our team:https://www.elsewhen.com. We are looking for a talented Senior AI Engineer to join a brand new delivery squad focused on solving new client problems in 4-week cycles. Each project is designed to produce a working pilot that demonstrates clear value, not a polished long-term system. You’ll work in a 4-person team (AI Engineer, Product Manager, Data Scientist, Principal for AI Engineering), using AI coding tools (e.g. Claude Code) to reduce build time and get solutions into a...

Remote Contract (UK Candidates only) Ideal start date: ASAP Contract Duration: 6 Months Outside IR35 Rate: £500-600 p/d Elsewhen, a London-based consultancy, designs and builds technology solutions for clients like Spotify, Google, Inmarsat, and Zego. Over the past decade, we have built a workplace prioritising impact, drive, and friendliness. We value outcomes over hours and agility over rigid processes. Work Environment: Fully Remote in the UK Join our team:https://www.elsewhen.com. We are looking for a talented Senior AI Engineer to join a brand new delivery squad focused on solving new client problems in 4-week cycles. Each project is designed to produce a working pilot that demonstrates clear value, not a polished long-term system. You’ll work in a 4-person team (AI Engineer, Product Manager, Data Scientist, Principal for AI Engineering), using AI coding tools (e.g. Claude Code) to reduce...

AI Integration Engineer (Defence & National Security) Location: London (Hybrid) Contract Rate: £600/day (Outside IR35) Requirement: Active UK SC Clearance (Mandatory) We are hiring on behalf of our client, a specialised defence consultancy, who is looking for an AI Integration Engineer with active SC clearance to join them on a contract basis in London. Key Skills Required Active UK SC Clearance (Mandatory - applications without this cannot be considered) Core Engineering: Strong Back End development skills (Python, Go, or C++) with solid API design and data pipeline experience AI Tooling: Hands-on experience integrating LLMs, handling vector databases, and building robust chunking/embedding strategies Secure Architecture: Deploying LLM pipelines, RAG systems, and orchestration layers within secure, classification-bound environments Local Implementations: Self-hosting, optimising, and containerising open-source models (eg, Llama,...