39 lead data engineer jobs found in London

Lead Data Engineer - Platform Reset & Build Location: North London (hybrid) Contract: Interim Rate: £800 per day (outside IR35) A North London -based organisation is seeking an Interim Lead Data Engineer to reset the data engineering function and build a new, best-in-class data engineering capability . This role is for a hands-on engineering leader. You will not be inheriting a greenfield environment, nor simply "running what exists ". The mandate is to review, fix, and rebuild data pipelines, engineering standards, and ways of working. The Role You will take ownership of the data engineering layer end to end , setting direction while remaining close to the code. The role combines technical depth , engineering leadership , and delivery discipline . Key responsibilities include: Reviewing the current data engineering landscape and identifying structural weaknesses Resetting and rebuilding data...

Lead Data Engineer (Azure Synapse) - Watford - £550-£600/day - Outside IR35Global organisation in Watford is seeking a hands-on Lead Data Engineer to review and modernise their data engineering practice. You'll consolidate pipelines, implement best practices, and lead a small team - while remaining actively involved in delivery.3-month contract with a strong chance of extension.What you'll do: Build and optimise Azure Synapse pipelines and integrations Apply Lakehouse / ADLS Gen2 patterns and medallion architecture Lead and mentor engineers while delivering hands-on Ensure secure, scalable, production-ready engineering Coding across SQL, Python, CI/CD, DevOps You'll need: Experience in data engineering, including strong expertise in Azure Synapse Experience stabilising/modernising live platforms Strong SQL, Python, performance tuning, and security focus Exposure to multiple source systems (Finance, CRM, ERP) Hybrid working (2-3 days onsite), competitive rate, outside...

Lead Data Engineer (Azure Synapse) - Watford - £550-£600/day - Outside IR35 Global organisation in Watford is seeking a hands-on Lead Data Engineer to review and modernise their data engineering practice. You'll consolidate pipelines, implement best practices, and lead a small team - while remaining actively involved in delivery. 3-month contract with a strong chance of extension. What you'll do: Build and optimise Azure Synapse pipelines and integrations Apply Lakehouse / ADLS Gen2 patterns and medallion architecture Lead and mentor engineers while delivering hands-on Ensure secure, scalable, production-ready engineering Coding across SQL, Python, CI/CD, DevOps You'll need: Experience in data engineering, including strong expertise in Azure Synapse Experience stabilising/modernising live platforms Strong SQL, Python, performance tuning, and security focus Exposure to multiple source systems (Finance, CRM, ERP) Hybrid working (2-3 days onsite),...

Lead Data Engineer (Azure Synapse) - Watford - £550-£600/day - Outside IR35 Global organisation in Watford is seeking a hands-on Lead Data Engineer to review and modernise their data engineering practice. You'll consolidate pipelines, implement best practices, and lead a small team - while remaining actively involved in delivery. 3-month contract with a strong chance of extension. What you'll do: Build and optimise Azure Synapse pipelines and integrations Apply Lakehouse/ADLS Gen2 patterns and medallion architecture Lead and mentor engineers while delivering hands-on Ensure secure, scalable, production-ready engineering Coding across SQL, Python, CI/CD, DevOps You'll need: Experience in data engineering, including strong expertise in Azure Synapse Experience stabilising/modernising live platforms Strong SQL, Python, performance tuning, and security focus Exposure to multiple source systems (Finance, CRM, ERP) Hybrid working (2-3 days onsite), competitive rate,...

Lead AWS Data Engineer | London | Finance | AWS | Java | Outside IR35 | Contract | 12 MonthsOpus is partnered with financial services client to deliver a major programme of work.You’ll join an established engineering group, working alongside internal teams to build a new reporting workflow, upgrade an existing pipeline, and lead a full data‑sourcing uplift across multiple reporting workflows. The team will also be responsible for helping upgrade the framework for two critical internal workflows. This role will require you to be on site in either the London or Birmingham office 5 days per week, please only apply if you hit this criteria.Required Experience Strong background in data engineering within distributed data environments Hands-on expertise with AWS, Spark, Glue, and Snowflake Experience building and optimising data pipelines & reporting workflows Ability to work closely with internal engineering and controls teams Experience upgrading or modernising existing...

Lead AWS Data Engineer | London | Finance | AWS | Java | Outside IR35 | Contract | 12 Months Opus is partnered with financial services client to deliver a major programme of work. You'll join an established engineering group, working alongside internal teams to build a new reporting workflow , upgrade an existing pipeline , and lead a full data sourcing uplift across multiple reporting workflows. The team will also be responsible for helping upgrade the framework for two critical internal workflows. This role will require you to be on site in either the London or Birmingham office 5 days per week, please only apply if you hit this criteria. Required Experience Strong background in data engineering within distributed data environments Hands-on expertise with AWS , Spark , Glue , and Snowflake Experience building and optimising data pipelines & reporting workflows Ability to work closely with internal engineering and controls teams Experience upgrading...

Lead AWS Data Engineer | London | Finance | AWS | Java | Outside IR35 | Contract | 12 Months Opus is partnered with financial services client to deliver a major programme of work. You'll join an established engineering group, working alongside internal teams to build a new reporting workflow , upgrade an existing pipeline , and lead a full data-sourcing uplift across multiple reporting workflows. The team will also be responsible for helping upgrade the framework for two critical internal workflows. This role will require you to be on site in either the London or Birmingham office 5 days per week, please only apply if you hit this criteria. Required Experience Strong background in data engineering within distributed data environments Hands-on expertise with AWS , Spark , Glue , and Snowflake Experience building and optimising data pipelines & reporting workflows Ability to work closely with internal engineering...

We're looking for a hands-on Tech Lead to lead the design and delivery of a complex, secure, and scalable AWS data platform within a public services client. This is a senior leadership role requiring not just strong technical capability, but the confidence and experience to lead delivery across a highly regulated programme with complex internal and external stakeholders . You'll act as the technical authority for the platform, guiding a small multi-disciplinary team while working closely with client architects, security leads, product owners, and delivery leadership to ensure solutions are robust, compliant, and delivered incrementally to production. This role suits someone who is technically deep, delivery-focused, and comfortable owning decisions in challenging environments . Key Responsibilities Technical Leadership & Delivery Provide clear technical leadership across data engineering, analytics engineering, and DevOps. Own end-to-end technical design and...

Senior Backend Engineer - HIRING ASAP Positions Available: 2 Start Date: ASAP Duration: 6 Months Location: Remote (UK Based) Rate: £500 - £600 per day, outside IR35 Summary These positions are suited for Senior folks, who are motivated, proactive, not afraid to take leadership and are confident to make decisions but are also good team players and have a very good technical skill. Tech stack you will be working in is NodeJS + PSQL + AWS. Responsibilities for Role #1 CDM + HubSpot - extending our clients' Commercial Data Manager including tech improvements and new features, but also taking over maintenance and lead on HubSpot that was built for them by an external agency, however now they're looking into continue expanding it and maintaining it in house. The role will be split 70% CDM and 30% HubSpot, with this person being the key developer looking after HS, alongside with their architect, so for this role previous experience with HubSpot will be essential....

Contract - AI Engineer Job description Job Title: AI Engineer (contract) Location: London Hybrid. Travel to the London office 2 days a week Duration: 6 months Contract Start Date: March 2026 Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte. The Role We are looking for a AI Engineer to join our Data and AI Team supporting internal service delivery transformation projects across Tax and Legal. You will be a Python and Azure expert in designing and building cutting-edge generative AI solutions for complex challenges. You will r...

Data Migration Engineer - Outside IR35 - Remote Role Summary We are seeking a hands-on Data Migration Engineer to support a large-scale ERP transformation initiative. This role is responsible for planning, executing, and validating the migration of data from multiple legacy systems into a new enterprise platform. The successful candidate will take full ownership of end-to-end migration activities, ensuring data accuracy, integrity, compliance, and traceability throughout the migration lifecycle. Key Responsibilities Analyse legacy system data structures and define detailed data mapping rules aligned with the target ERP data model. Design, develop, and execute ETL workflows for data extraction, transformation, and loading activities. Plan and conduct trial migrations, validate outputs, and reconcile migrated data against source systems. Lead data cleansing and de-duplication initiatives to enhance data quality prior to migration....

Contract Role: Data Engineer (Database Migration Project) / Up to £500 per day / 6 months (likely to extend) / London / Fintech We're looking for an experienced Data Engineer / Migration specialist to lead a critical database migration for one of our fintech clients. Start Date: ASAP Length: 6 months (extension likely) Type: Contract Day rate: up to £500 per day (outside IR35) Location: London/Hybrid What You’ll Be Doing Mapping the new database into the existing reporting framework. Building robust ETL pipelines to keep BAU reporting flowing. Handling three active data sources, including one undergoing a full structural change. Preserving data lake functionality, including time‑based parameters and historical logic. What We’re Looking For Proven platform‑to‑platform database migration experience (essential). Strong data engineering background (ETL, schema mapping, pipelines). Someone who thrives under pressure and can operate...

Project is integration multiple 3rd party services into a financial services platform. Looking for front end (React Native) or Back end (.net) experience (Or both) Start date ASAP Duration 3 months (Likely to extend) 2 days / week in person working (London) Joining a cross functional team of 12 Immediate Interviews     The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.     Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.     We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the...

Lead React Native Engineer - Hybrid - up to £650 per day Outside IR35 | React Native | Architecture | FinTech A renowned, funded & profitable challenger bank requires a Lead React Native SME to work on their mobile app. As a business, their offering is a product that will provide a flexible checking account with multiple features like categorising expenses, instant payment notifications, and easy access to financial reports. It's fully integrated with a mobile app, and it allows users to adjust account settings, activate or deactivate cards, and set up savings goals right from their phone. Lead React Native Role: As a Lead React Native you will act as a React Native SME within the team, where you will design and own the React Native app architecture In doing this, you will ensure alignment with core architectural principles ensuring they build a robust architecture that focuses on avoiding undue complexity and over-coupling, and supports the firm in...

AWS Security & Vulnerability Remediation Engineer (DevSecOps / Cloud Security) 3 month initial contract outside IR35 Role Summary We are looking to hire an AWS-focused security engineer to lead the remediation of cloud and application vulnerabilities across our AWS environment. You will work closely with Developers, Data Engineers, and our AWS Security Lead to validate findings, prioritise risk, implement fixes, and strengthen security controls. AWS security is your primary technical skill; a strong understanding of software development, DevSecOps practices, and vulnerability management is essential. Key Responsibilities Own end-to-end remediation of AWS and workload vulnerabilities: confirm findings, assess impact, prioritise actions, and track through to closure. Partner with Developers and Data Engineers to implement secure fixes in code, infrastructure, and delivery pipelines (IaC, containers, serverless, OS/packages). Work with the AWS Security Lead to...

AWS Security & Vulnerability Remediation Engineer (DevSecOps / Cloud Security) 3 month initial contract outside IR35 Role Summary We are looking to hire an AWS-focused security engineer to lead the remediation of cloud and application vulnerabilities across our AWS environment. You will work closely with Developers, Data Engineers, and our AWS Security Lead to validate findings, prioritise risk, implement fixes, and strengthen security controls. AWS security is your primary technical skill; a strong understanding of software development, DevSecOps practices, and vulnerability management is essential. Key Responsibilities Own end-to-end remediation of AWS and workload vulnerabilities: confirm findings, assess impact, prioritise actions, and track through to closure. Partner with Developers and Data Engineers to implement secure fixes in code, infrastructure, and delivery pipelines (IaC, containers, serverless, OS/packages). Work with the AWS Security...

Lead Backend Engineer - Architect - Series A consumer tech startup | 6-week critical delivery | London (Hybrid) | c£650 per day outside IR35 We're recruiting a senior backend engineer to own and build an entire backend system from the ground up. This is a full ownership role for someone who thrives under pressure and ships fast. The Challenge Our client has a working POC, but the backend is the blocker to launch. They need someone who makes architectural decisions autonomously, communicates clearly, and drives forward without waiting for consensus. You'll be building the foundation for a consumer product recommendation platform launching in 6 weeks. What You'll Own The entire backend system: data models, database architecture, APIs for mobile front-end, third-party AI integrations, data pipelines, security, and validation. You'll be the most senior backend engineer, driving technical decisions and pulling the team forward as the product evolves. This isn't...

Lead Backend Engineer - Architect - Series A consumer tech startup | 6-week critical delivery | London (Hybrid) | c£650 per day outside IR35 We're recruiting a senior Back End engineer to own and build an entire Back End system from the ground up. This is a full ownership role for someone who thrives under pressure and ships fast. The Challenge Our client has a working POC, but the Back End is the blocker to launch. They need someone who makes architectural decisions autonomously, communicates clearly, and drives forward without waiting for consensus. You'll be building the foundation for a consumer product recommendation platform launching in 6 weeks. What You'll Own The entire Back End system: data models, database architecture, APIs for mobile Front End, third-party AI integrations, data pipelines, security, and validation. You'll be the most senior Back End engineer, driving technical decisions and pulling the team forward as the product evolves. This isn't...

CONTRACT SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW CONTRACT JOB OPPORTUNITY AVAILABLE WITHIN A LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Contract job opportunity for a Senior Software Engineer Globally leading defence / cyber security company £500 - £750 per day (inside and outside IR35 roles available) London based organisation in an easily accessible location Contract Senior Software Engineer To apply please call or email WHO WE ARE? We are recruiting multiple contract Senior Software Engineers to work with various clients in London ranging from R &D companies, Multi-National Consultancies to SME 's and product based companies. Due to the nature of the work these clients do, you must hold enhanced DV Security Clearance. WHAT WILL THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver...

Senior Cloud & Information Security Engineer | FinTech | London (Hybrid) Outside IR35 Contract The Opportunity We are recruiting on behalf of a leading FinTech firm that is currently scaling its digital infrastructure to meet the demands of the global financial markets. We are seeking a Senior Cloud & Information Security Engineer to take full technical ownership of our client’s security posture and cloud environment. This is a critical builder role for a security specialist who thrives at the intersection of Infrastructure Engineering and Cyber Defense . You will not just be setting policies; you will be designing, implementing, and operating the secure systems that protect critical financial data. The Role & Impact As the technical authority for cloud infrastructure and information security, you will ensure that security-by-design is baked into every deployment: Security Ownership: Lead the implementation of day-to-day...