26 to 50 of 71 Data Validation Jobs in London

About the Role A leading global trading and investment firm is looking for Data Engineers to join its core data function. The team plays a key role in powering research, modelling, and trading strategies through high-quality, well-managed data systems. This is a hands-on engineering position within a small but growing team. You’ll work … across the full data lifecycle - from design to delivery - helping to shape and scale the firm’s data platform over the next few years. The ideal candidate will bring strong technical ability, curiosity, and a drive to build robust, high-performance systems. Key Responsibilities Partner with quantitative researchers, developers, and portfolio teams to turn business needs into practical … scalable data solutions. Extend and optimise the data warehouse by integrating new data sources and improving system performance, scalability, and reliability. Help define best practices for data quality, governance, and platform architecture. Evaluate and implement modern tools and frameworks for managing, querying, and streaming large datasets. Build and maintain automated processes for data validation More ❯

About the Role A leading global trading and investment firm is looking for Data Engineers to join its core data function. The team plays a key role in powering research, modelling, and trading strategies through high-quality, well-managed data systems. This is a hands-on engineering position within a small but growing team. You’ll work … across the full data lifecycle - from design to delivery - helping to shape and scale the firm’s data platform over the next few years. The ideal candidate will bring strong technical ability, curiosity, and a drive to build robust, high-performance systems. Key Responsibilities Partner with quantitative researchers, developers, and portfolio teams to turn business needs into practical … scalable data solutions. Extend and optimise the data warehouse by integrating new data sources and improving system performance, scalability, and reliability. Help define best practices for data quality, governance, and platform architecture. Evaluate and implement modern tools and frameworks for managing, querying, and streaming large datasets. Build and maintain automated processes for data validation More ❯

Role: - Mapping Audit resource Location: Anywhere in Ireland or the UK is fine (Remote) Duration: 3 months contract with possibility of renewal The ideal candidate has experience in data validation, content QA, or web operations, strong Excel/Google Sheets skills, and the ability to manage large datasets with precision. Familiarity with EA Help, Config App, or similar … QA/QV efforts for related Connect Flow initiatives. Identify recurring mapping issues and propose process or tooling improvements. Participate in weekly syncs to review progress, blockers, and upcoming validation batches. Skills and Experience Proven experience in data validation, content auditing, or quality assurance work (preferably within a digital or web environment). High attention to detail … with the ability to track and manage large datasets accurately. Proficiency with Excel or Google Sheets (filtering, conditional formatting, data cleanup). Comfort with comparing and analyzing structured data (e.g., URLs, metadata, content tags). Excellent written communication skills for documenting mismatches and reporting progress. Ability to work independently while maintaining alignment with multiple stakeholder teams. Familiarity with More ❯

Senior Data Engineer London - 2 days a week in the office Up to £95k A high-growth digital platform is transforming a multi-billion-dollar global industry through innovative online technologies. The platform connects a large network of customers and partners worldwide, powering billions in annual transactions. With significant revenue growth and international reach, the company is modernising one … a global, category-defining business in the process. As the organisation scales its AI and machine learning capabilities across search, recommendations, and analytics, it is investing heavily in robust data infrastructure to enable rapid experimentation, reliable insights, and data-driven decision-making. The Senior Data Engineer will collaborate with Product Managers, ML Engineers, Analysts, and Software Engineers … to design and maintain the data pipelines and infrastructure that power AI-driven features and business intelligence, handling millions of events and requests daily. Key Responsibilities: Design, build, and maintain reliable ETL/ELT pipelines to support analytics, ML models, and business intelligence Develop scalable batch and streaming data pipelines to process millions of events and transactions daily More ❯

Senior Data Engineer London - 2 days a week in the office Up to £95k A high-growth digital platform is transforming a multi-billion-dollar global industry through innovative online technologies. The platform connects a large network of customers and partners worldwide, powering billions in annual transactions. With significant revenue growth and international reach, the company is modernising one … a global, category-defining business in the process. As the organisation scales its AI and machine learning capabilities across search, recommendations, and analytics, it is investing heavily in robust data infrastructure to enable rapid experimentation, reliable insights, and data-driven decision-making. The Senior Data Engineer will collaborate with Product Managers, ML Engineers, Analysts, and Software Engineers … to design and maintain the data pipelines and infrastructure that power AI-driven features and business intelligence, handling millions of events and requests daily. Key Responsibilities: Design, build, and maintain reliable ETL/ELT pipelines to support analytics, ML models, and business intelligence Develop scalable batch and streaming data pipelines to process millions of events and transactions daily More ❯

This fast moving fast expanding professional services firm are looking for a confident administrator within HR to maintain and manage employee data within the Human Resources Information System (HRIS) . You will be responsible for ensuring data accuracy, supporting the wider People Team, generating reports, and assisting with system upgrades or changes. You will play a critical role … in enabling informed decision-making and streamlined HR processes across this multi site professional services firm. HRIS Data Management: Liaise with the Advisory Team to maintain accurate and up-to-date employee records within the HRIS. Process changes including job changes, holiday entitlement updates, and personal information updates, including mass uploads. Ensure data integrity by performing regular audits … hierarchies. Assist in testing and implementing system updates, enhancements, and new features. Liaise with other members of the People team to troubleshoot and resolve system issues promptly. Reporting and Data Analytics: Generate standard and ad hoc reports from HRIS ensuring the security and integrity of data. Support data extraction and integration with other systems. Process Support and Automation More ❯

Your new company One of the largest independent bodies handling complaints regarding financial matters Your new role ETL/SQL/Azure Data Factory Test Lead - SDET - Outside IR35 What you'll need to succeed My client is looking for an interim Test Lead with an excellent SDET (Software Development Engineer in Test) background, to join in an immediately … available for interview within 5 working days, with a target start date of November 10th 2025.You will bring the following skills/experience: Experience as an SDET consultant, supporting data platform testing initiatives Strong understanding of ETL processes - including data extraction, transformation, and loading Experience with database migration - validating and testing data movement across heterogeneous systems Hands … on testing experience with Azure Data Factory - including pipelines, triggers, and data flows Familiarity with Azure Synapse Analytics (formerly Azure Enterprise Data Warehouse) - understanding of data warehousing concepts and testing strategies Proficiency in advanced SQL and DocumentDB (Cosmos DB) queries - capable of writing, optimising, and troubleshooting complex queries for data validation Excellent communication skills More ❯

Location: London (Hybrid, 3 days per week onsite) Are you a highly experienced Senior Systems Integration Test Analyst with a proven track record in end-to-end technical systems validation? At Ten10, we're a leading consultancy in Quality Engineering, Software Testing, and DevOps, and we're looking for someone like you to join us on an interim basis … for Systems Integration Testing (SIT), with a dedicated focus on validating the end-to-end functionality of Back End and technical integrations across multiple complex systems. Database and Technical Validation: Rigorously test databases, performing hands-on validation using SQL queries to verify data integrity, data flow, and transaction accuracy across integrated systems. Azure DevOps & Technical Tooling … clarifying questions, and adapt testing approach quickly to changing project scope and unstructured direction. Reporting: Produce clear and concise test reports and exit summaries that accurately communicate the technical validation outcomes, integration risks, and key insights. Collaboration: Liaise closely with technical development teams and other stakeholders to deep-dive into system issues and verify complex integration points. What We More ❯

a proven track record in the design and deployment of LLMs for applications within the NLP space, as well as established experience collaborating with product managers, developers, and fellow data scientists within a product-led SaaS environment. What will you be doing? Working within a dynamic cross-functional team that operates based on OKRs (Objectives and Key Results), fostering … collaboration among developers, QAs, data scientists, and data analysts, to consistently achieve tangible outcomes aligned with OKR targets. Employing your deep understanding of AI and staying current with industry trends, you will play a pivotal role in shaping project execution by contributing to the OKR formulation process, and directly working towards those. Crafting and refining Machine Learning models … and algorithms to address complex product challenges. Devising and implementing innovative data analysis and data mining strategies, extracting valuable insights from diverse data sources. Harnessing the power of natural language processing (NLP) techniques to extract pertinent information from textual data. Formulating predictive models to anticipate future trends, enabling informed decision-making. Constructing automated ML workflows and integrating More ❯

Digital Data Analyst (Website Analytics) Burton Upon Trent/London – Hybrid (1–2 days onsite) Up to £50,000 The Company A well-known hospitality brand is growing its digital analytics function and looking for a hands-on Digital Data Analyst to join the team. You’ll be the go-to for web analytics across 80+ sites — helping … how customers interact online and where the biggest opportunities lie to improve performance. The Role You’ll play a key part in improving the digital customer journey through cleaner data, sharper insights, and smarter reporting. Expect to get involved in: Building dashboards and reports in GA4, SQL, Looker, and Power BI Analysing user drop-off points and conversion trends … Validating tracking and debugging tags to ensure data integrity Pulling data from multiple sources to build a clear digital performance picture Partnering closely with marketing, product, and development teams to influence strategy Your Skills You’ll need: Strong hands-on experience with GA4 – you use it daily and know your way around custom reporting Solid SQL skills for More ❯

Digital Data Analyst (Website Analytics) Burton Upon Trent/London – Hybrid (1–2 days onsite) Up to £50,000 The Company A well-known hospitality brand is growing its digital analytics function and looking for a hands-on Digital Data Analyst to join the team. You’ll be the go-to for web analytics across 80+ sites — helping … how customers interact online and where the biggest opportunities lie to improve performance. The Role You’ll play a key part in improving the digital customer journey through cleaner data, sharper insights, and smarter reporting. Expect to get involved in: Building dashboards and reports in GA4, SQL, Looker, and Power BI Analysing user drop-off points and conversion trends … Validating tracking and debugging tags to ensure data integrity Pulling data from multiple sources to build a clear digital performance picture Partnering closely with marketing, product, and development teams to influence strategy Your Skills You’ll need: Strong hands-on experience with GA4 – you use it daily and know your way around custom reporting Solid SQL skills for More ❯

potential extension) Start: ASAP Rate: Market rate - Inside IR35 We’re looking for experienced PySpark + Fabric Developers to join a major transformation programme with a leading global financial data and infrastructure organisation. This is an exciting opportunity to work on cutting-edge data engineering solutions, driving innovation and performance at scale. Key Responsibilities Design, build, and optimise … data pipelines for both batch and streaming workloads. Develop and manage dataflows and semantic models to support analytics and reporting. Implement complex data transformations, aggregations, and joins with a focus on performance and reliability. Apply robust data validation, cleansing, and profiling techniques to maintain accuracy. Enforce role-based access, data masking, and compliance standards. Tune … Strong hands-on experience with PySpark (RDDs, DataFrames, Spark SQL). Proven ability to build and optimise ETL pipelines and dataflows. Familiar with Microsoft Fabric or similar lakehouse/data platform environments. Experience with Git, CI/CD pipelines, and automated deployment. Knowledge of market data, transactional systems, or financial datasets. Excellent communication skills and collaborative mindset. Desirable More ❯

is a great opportunity for a highly skilled VBA Developer to support a strategic client engagement. We are looking for candidates who can deliver robust, scalable VBA solutions across data automation, Excel integration, and workflow optimisation. Job Requirements Key Responsibilities Design and develop modular, maintainable VBA codebases within Excel and other Microsoft Office applications. Automate data processing tasks … and reporting workflows using advanced VBA scripting. Implement field-level and cross-file data validation checks to ensure data integrity and consistency. Integrate VBA solutions with external data sources (e.g., databases, web services) using OLEDB/ADO. Collaborate with IT and business teams to deploy and maintain solutions in production environments. Manage version control and documentation … Core VBA Development Advanced proficiency in VBA for Excel, Access, and Outlook. Strong understanding of error handling and debugging techniques. Experience in modular code design for scalability and maintainability. Data Handling & Transformation Expertise in automating bulk data ingestion and transformation within Excel. Familiarity with schema validation, cleansing routines, and dynamic reporting. Experience with rule-based logic and More ❯

Job Description: Data Scientist Location: London/Hybrid – Office two days per week About Clariti AI Clariti AI is a B2B SaaS company providing price optimisation software to retail banks. We help banks make pricing decisions on products like mortgages and savings. Our pricing software guides clients to price recommendations that are worth millions of Pounds or Euros in … promising pipeline of new clients, with revenues expected to increase significantly in the next year. The company is bootstrapped (no VC or angel investment) and is already very profitable. Data Scientist We are looking for an exceptional Data Scientist to join us at this exciting time as we build on our growth. Our machine learning algorithms literally need … to be outstanding for our clients to use us. As an early joiner, the Data Scientist role is key, and provides multiple opportunities for the right person to grow significantly. There are many things to focus on depending on experience and interests. The role is all about pro-active "building and improving", whether that is improving the predictive power More ❯

A leading global investment firm is seeking a Weather Data Engineer to help build proprietary weather analytics and infrastructure that directly powers alpha generation across its commodities trading strategies. This is a high-impact opportunity to work at the intersection of data engineering, meteorology, and AI-driven forecasting. Weather data is central to the firm's edge … from raw satellite observations to climate simulations and proprietary model outputs. You'll be part of a specialist team driving innovation in how weather data is ingested, transformed, and deployed across the investment process. Responsibilities: Design and maintain scalable, cloud-native (AWS) pipelines for ingesting and processing real-time and historical weather data. Build robust APIs and data services to serve weather data and AI model outputs to researchers, quants, and traders. Support the development and deployment of proprietary forecasting models, including workflows for blending, debiasing, and fine-tuning. Collaborate with meteorologists, data scientists, and AI researchers to onboard new datasets and accelerate research. Implement automated data validation, monitoring, and alerting to ensure More ❯

Your new role My client is looking for a German-speaking Data Entry Analyst. What you'll need to succeed Fluent in German. Familiarity with tools like Microsoft Excel, Word, Google Sheets, and data entry platforms or CRMs. Capable of managing large volumes of data, maintaining structured records, and following naming conventions. Able to spot inconsistencies, verify … data accuracy, and perform basic data validation or formatting. Understanding of data privacy principles and ability to handle sensitive information securely and ethically. What you need to do now If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job More ❯

Your new role My client is looking for a German-speaking Data Entry Analyst. What you'll need to succeed Fluent in German. Familiarity with tools like Microsoft Excel, Word, Google Sheets, and data entry platforms or CRMs. Capable of managing large volumes of data, maintaining structured records, and following naming conventions. Able to spot inconsistencies, verify … data accuracy, and perform basic data validation or formatting. Understanding of data privacy principles and ability to handle sensitive information securely and ethically. What you need to do now If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.If this job isn More ❯

Progression What the role entails: Some of the main duties of the Kronos Support Analyst will include: Lead configuration workshops for Kronos Time & Attendance System. Lead business engagement and data validation workshops to gain understanding of HR data and requirements for the solution. Develop and oversee new client configurations within the solution, review configuration changes and support … reporting tools (Workforce Analytics, HyperFind queries, custom reports) Understanding of Kronos integrations with HRIS, payroll, and ERP systems (e.g., SAP, Workday, PeopleSoft) Troubleshooting Kronos system errors, security roles, and data inconsistencies. Analytical & Reporting Skills Ability to analyse workforce data for trends, compliance, and efficiency improvements. Experience creating dashboards and performance metrics for labor utilisation. Strong skills with Excel … data analysis, and pivot tables. Experience preparing audits for timekeeping compliance. Stakeholder Support & Training Supporting HR, Payroll, and Operations teams in using Kronos effectively. Documenting processes, creating user guides, and delivering end-user training. Serving as the liaison between IT, HR, and Payroll for Kronos issues. General Qualifications Years of experience: Typically, 2-5 years with Kronos systems in More ❯

digital insights and analytics consultancy to hire an Analytics Consultant to join their growing client delivery team. This is a great opportunity for someone with strong digital analytics and data storytelling experience who’s ready to take full ownership of client workstreams — combining technical rigour, commercial insight, and stakeholder engagement. You’ll play a key role in helping major … brands turn data into meaningful actions that drive personalisation and performance. THE ROLE AND RESPONSIBILITIES: Reporting & Insights Deliver regular digital performance reports with clear insights and recommendations. Build and maintain time-series dashboards across tools like Google Ads, Adobe Analytics, and Snowflake. Ensure reporting accuracy through data checks and campaign annotations. Personalisation & Experimentation Support A/B and … rules-based tests, defining hypotheses and success metrics. Translate insights into testable ideas and prioritise by commercial impact. Collaborate with stakeholders to launch and measure experiments. Data Quality & QA Run QA checks to maintain data integrity and consistency. Monitor key tracking systems, identify anomalies, and coordinate fixes. Client Delivery & Communication Act as the main client contact, managing updates More ❯

digital insights and analytics consultancy to hire an Analytics Consultant to join their growing client delivery team. This is a great opportunity for someone with strong digital analytics and data storytelling experience who’s ready to take full ownership of client workstreams — combining technical rigour, commercial insight, and stakeholder engagement. You’ll play a key role in helping major … brands turn data into meaningful actions that drive personalisation and performance. THE ROLE AND RESPONSIBILITIES: Reporting & Insights Deliver regular digital performance reports with clear insights and recommendations. Build and maintain time-series dashboards across tools like Google Ads, Adobe Analytics, and Snowflake. Ensure reporting accuracy through data checks and campaign annotations. Personalisation & Experimentation Support A/B and … rules-based tests, defining hypotheses and success metrics. Translate insights into testable ideas and prioritise by commercial impact. Collaborate with stakeholders to launch and measure experiments. Data Quality & QA Run QA checks to maintain data integrity and consistency. Monitor key tracking systems, identify anomalies, and coordinate fixes. Client Delivery & Communication Act as the main client contact, managing updates More ❯

to define automation requirements and ensure comprehensive test coverage. Propose and implement strategies to improve automation speed, accuracy, and reliability. Participate in new QA initiatives, including AI-driven testing, data validation automation, and continuous integration enhancements. Contribute to establishing best practices, coding standards, and reusable components for automation. Identify and mitigate risks in the automation lifecycle, ensuring consistent … scripting skills in C# or Java Experience with CI/CD pipelines (Jenkins, GitHub Actions, or Azure DevOps). Exposure to API testing tools (Postman, RestAssured, ). Experience in data-driven testing and validation across complex systems or insurance applications. Strong understanding of SDLC, STLC, and QA best practices. Experience in improving and maintaining automation frameworks to support More ❯

and CI/CD tools such as Bitbucket, Bamboo, or Jenkins Strong understanding of Fixed Income products and E-trading systems such as Bloomberg, Tradeweb, MarketAxess, or ION Strong data validation and SQL skills Excellent communication, analytical, and stakeholder management abilities If you have a passion for automation, strong technical skills, and experience working with front-office trading More ❯

. Desirable: Exposure to test automation tools (e.g., Selenium, Cypress, Playwright). Experience in API testing and tools such as Postman or REST Assured. Basic understanding of SQL and data validation. Familiarity with Agile/Scrum delivery environments. ISTQB Advanced Level Test Analyst/Test Manager certification (or equivalent). Please feel free to contact myself – Daisy Nguyen at More ❯

Senior Test Analyst to join a strategic system upgrade programme within a leading financial services organisation. This role focuses on upgrading the Algo Collateral Management System, ensuring robust interface validation and seamless system integration across key business and technology functions. Role & Responsibilities: Develop and execute detailed test plans, cases, and scripts for the system upgrade. Validate inbound and outbound … interfaces, ensuring data integrity and functional accuracy. Collaborate with business analysts, developers, and project managers to define and test requirements. Conduct System Integration Testing (SIT) and support User Acceptance Testing (UAT). Identify, document, and manage defects using tools such as JIRA. Ensure compliance with internal QA standards and contribute to test reporting and sign-off. Essential Skills & Requirements … Analyst on complex system upgrade or integration projects. Strong knowledge of system testing methodologies and tools. Experience testing interfaces (file-based and API integrations). Proficiency with SQL for data validation and backend testing. Solid understanding of collateral management, settlements, or post-trade processing within financial services. Prior experience with SmartStream or Algo Collateral systems highly desirable. Excellent More ❯

Data Migration Lead (Wholesale Lending) - £650 Per Day – London (Hybrid) – Banking Overview: A leading organisation in the banking sector is seeking an experienced Data Migration Lead to manage the migration of data from the existing ACBS platform to Loan IQ, ensuring operational readiness and high data quality throughout the transformation. Role & Responsibilities: Lead a Migration Pod … overseeing testing, reconciliation, and go-live activities. Collaborate with Wholesale Lending and Technology teams to ensure accurate and aligned data and processes. Manage stakeholder engagement, approvals, and operational readiness for system changes. Drive process improvement, automation, and data quality initiatives. Support BAU implementation, provide on-site guidance, and co-manage offshore deliverables. Prepare and present reports and presentations … to global stakeholders. Technical Requirements: Strong knowledge of data migration, reconciliation, and loan management systems (ACBS, Loan IQ). Experience with test migrations, dry runs, and data validation. Proven stakeholder management and cross-functional collaboration skills. Skilled in data analysis and presentation tools (Excel, Power BI, or similar). Ability to drive operational readiness, process improvement, and More ❯