1 to 25 of 38 Data Structures Jobs in the City of London

Introduction At Gallagher Re, we bring clarity to complexity by helping clients around the world make confident, data-driven decisions in a rapidly evolving risk landscape. Here, youll be part of a team that leverages world-class analytics and deep reinsurance expertise to deliver strategic advisory services and transactional … your career, and collaborate with people who are as driven and inquisitive as you are. Overview At Gallagher Re, we are seeking an experienced Data Platform and Design Lead to establish and evolve the core fundamentals of our Data Platform. This platform will support operational, transactional, and analytics ...

ROLE : Data Analyst -P&C Insurance LOCATION : London, UK EXPERIENCE : 10 + Years We are seeking an experienced Technical Data Analyst to support the Global Specialty Insurance (GSI) Delegated Authority Data Workstream. This role is responsible for driving business engagement, defining landing data requirements, and shaping … data standards that enable a unified future operating model for Delegated Authority data intake requirements and workflow across GSI for existing DA partners and devising requirements for new partner onboarding. Working closely with the Senior Data Architect, the role will facilitate cross-BU collaboration to define Contract ...

Data Analyst 6 months Hybrid - 1-2 Days per week on site in London £(Apply online only) per day (Inside IR35) ***The selected candidate MUST HAVE experience in London Markets*** Key Skills & Experience Draft the scope for the data and analytics workstream with understanding of all end user … requirements and KPIs Develop BRDs, data mapping specifications, refined PBIs with clear articulation of user stories and acceptance criteria for data modellers and data engineers Analyse delegated authority data source through profiling, exploratory queries including quality validation to support medallion layer transformations in data ...

Cleared Data Consultants and Analysts – London – Up to £60,000 per annum Are you a data-driven professional with a passion for delivering impactful solutions? Do you excel in translating complex data challenges into actionable insights? If so, Morela has an exciting opportunity for you. Morela … proud to partner with one of the UK's leading data consultancies, renowned for their innovative approach to data integration and analytics. As they continue to expand, they're seeking a skilled SC & DV Cleared Data Consultant and Analysts to join their dynamic team. This role ...

services company seeking a Senior Associate - Marketing Technology to support and evolve its enterprise marketing ecosystem. This position operates at the crossroads of marketing, data, and technology, with a strong emphasis on marketing tech data, AI & machine learning, and data workflows. You will play a key role … enhancing platform performance, strengthening integrations, and enabling scalable, data-driven marketing operations. This opportunity is ideal for someone who thrives in complex environments and enjoys improving how systems, data, and teams connect. Key Responsibilities Optimise and maintain core marketing technology platforms to ensure strong performance and reliability Design ...

Cleared Senior Data Consultants and Analysts – London – Up to £70,000+ per annum Are you a data-driven professional with a passion for delivering impactful solutions? Do you excel in translating complex data challenges into actionable insights? If so, Morela has an exciting opportunity for you. Morela … proud to partner with one of the UK's leading data consultancies, renowned for their innovative approach to data integration and analytics. As they continue to expand, they're seeking a skilled SC & DV Cleared Senior Data Consultant and Analysts to join their dynamic team. This role ...

exciting opportunity in London is looking for a Director, Data Operations/BI, supporting a global data and reporting centre within a complex, multi‐market organisation. • Based in London • Permanent role • Start date: May 2026 • Up to £80k per annum The Job As the Director, Data Operations …/BI , your responsibilities will include: Owning the end‐to‐end delivery of enterprise‐level data and taxonomy solutions, powering internal reporting and decision‐making Acting as a senior member, defining and enforcing global data governance, taxonomy, and reporting standards Leading engagement with multiple global and local markets ...

this transformation is the migration of our core ERP platform from MediaOcean to Microsoft Dynamics 365. This move will modernise our financial infrastructure, improve data integrity, and create a scalable platform to support continued growth. To deliver this successfully, we need a senior finance professional who can take control … present materials for senior stakeholder and governance forums, providing clear and concise updates on requirements progress, decisions needed, and outstanding risks • Contribute to data migration planning, advising on data structures, cleansing requirements, and field-level mapping from MediaOcean to Microsoft Dynamics 365 What You'll Bring ...

develop and train large multimodal machine learning models across all stages: pre-training, post-training, evaluations and inference. Work closely with clients to understand data and model architecture requirements for their business needs. Be given a high degree of autonomy and ownership over your work. Co-hire your future … standards, and culture of the company. What we are looking for: Research engineering: 5+ years of industry experience in complex machine learning projects including data processing and training models in a distributed environment. LLMs: Deep understanding of LLM architectures, pre and/or post-training, evaluations and inference. Programming ...

develop and train large multimodal machine learning models across all stages: pre-training, post-training, evaluations and inference. Work closely with clients to understand data and model architecture requirements for their business needs. Be given a high degree of autonomy and ownership over your work. Co-hire your future … towards best practices, standards, and culture of the company. What we are looking for: Research engineering: Industry experience in complex machine learning projects including data processing and training models in a distributed environment. LLMs: Understanding of LLM architectures, pre and/or post-training, evaluations and inference. Programming languages ...

deploy following our established DevOps CI/CD and best practices. Improve the efficiency, performance, and scalability of ML & NLP models (this includes data quality, ingestion, loading, cleaning, and processing). Stay up-to-date with ML & NLP research, and experiment with new models and techniques. Perform code-reviews … interview process itself). Bonus points for Stack Overflow and Kaggle contributions! What we are looking for Experience analysing large volumes of textual data (almost all of our use cases will involve NLP) Ability to write clear, robust, and testable code, especially in Python Familiarity with SQL and NoSQL ...

influence of user experience-based design e.g. Personas, user journeys and how this can be used to augment a solution Experience with functional data conversion, transformation and reconciliation An understanding of the functional, application and technical implementation approach elements of an Oracle Cloud ERP programme We are looking … more years of experience in implementing Oracle Cloud EPM products. Understanding or experience of budgeting & forecasting processes, preferably in public sector Understanding of finance data structures, data migration and integration. Understanding of finance processes and challenges. Great communication and client-facing skills. What ...

This team builds the components those applications rely on. I’m hiring for a developer tools company building widely adopted JavaScript components used in data-intensive applications across global enterprises, financial institutions, and technology companies. This is core engineering work, focused on performance, scalability, and building systems that operate … optimising a high-performance DataGrid and charting library used globally Solving complex problems around rendering, large datasets, and real-time updates Working across data structures, algorithms, and performance-critical code paths Contributing to both grid and visualisation components Building features end-to-end — from design through to release ...

Role Title: Junior Data Analyst (Level 6 – Data Analyst Pathway) Reports to: Data & Digital Services Leads (Group IT) Location: Hybrid – UK Team: Group IT – Data & Digital Services Duration: 4‐year Degree Apprenticeship Provider: Skills England – Digital & Technology Solutions Professional (Option 5: Data Analyst) About Dalkia … deliver exceptional service and shape our strategic objectives. Summary of the Role: This apprenticeship is designed for someone beginning their career in digital, data or analytics. Over four years, you will gain practical experience across multiple IT and business domains while studying towards a recognised Degree Apprenticeship. The role ...

testing, and rollouts Collaborate with the People team to identify system improvements and implement configuration changes Develop and maintain reports and dashboards to support data-driven decision-making Support cyclical HR projects such as Gender Pay Gap, annual regrading, and appraisal processes Troubleshoot system issues and provide timely resolution … escalation Ensure data integrity and compliance with data protection regulations Assist in rollout of new HR technologies and digital initiatives Provide training and support to HR users and stakeholders on system functionality Maintain global intranet content relating to people systems Build relationships with external suppliers and raise support ...

testing, and rollouts Collaborate with the People team to identify system improvements and implement configuration changes Develop and maintain reports and dashboards to support data-driven decision-making Support cyclical HR projects such as Gender Pay Gap, annual regrading, and appraisal processes Troubleshoot system issues and provide timely resolution … escalation Ensure data integrity and compliance with data protection regulations Assist in rollout of new HR technologies and digital initiatives Provide training and support to HR users and stakeholders on system functionality Maintain global intranet content relating to people systems Build relationships with external suppliers and raise support ...

Markets workflows (e.g., trade lifecycle, settlements, risk, reporting) • Translate business needs into functional and technical specifications • Work closely with developers to design and validate data models, APIs, and system integrations • Perform data analysis using SQL and MongoDB to support decision-making and troubleshooting • Create and maintain documentation including … Capital Markets Required Skills & Experience Domain Expertise • Strong understanding of Capital Markets (equities, fixed income, derivatives, FX, or commodities) • Familiarity with trade lifecycle, market data, pricing, and risk management Technical Skills • Proficiency in SQL (complex queries, joins, performance tuning) • Experience with MongoDB (document data modeling, querying, aggregation pipelines ...

technical and analytical People Systems Analyst on an initial 12-month fixed-term contract. This role offers a great opportunity to deepen experience in data and insights while gaining broader exposure to systems configuration, workflow improvements, and project support. Salary to £50,000 12-month fixed-term contract Hybrid … internal stakeholders Collaborate with the People team to identify system improvements and implement configuration changes Develop and maintain reports and dashboards to support data-driven decision-making across HR and the wider business Support cyclical HR projects such as Gender Pay Gap, annual fee earner regrading, and appraisal processes ...

technical direction of the platform and grow with the Firm on this unique and exciting journey. The platform is real: a 25+ entity relational data model, multi-LLM orchestration across Claude, Gemini, and GPT, deep Microsoft 365 integration, and a commercial intelligence layer built on Microsoft Fabric and Power … BI. What you'll own: → End-to-end architecture: frontend, backend, data layer, AI infrastructure → Evolution toward a scalable, modular, multi-tenant platform → RAG pipelines, document indexing, LLM orchestration at scale → Data integrations: SharePoint, Fireflies, Zapier, Xero and Zoho → Team growth and engineering practice maturity → AI strategy conversations ...

scale cutting-edge digital solutions. This is a chance to work on greenfield projects - building new, scalable products that help venues create seamless, data-driven guest experiences from the ground up. What will I be doing? Design, develop, test, and maintain high-performance backend systems supporting real-time hospitality … features throughout the software development lifecycle - from technical design through to deployment and ongoing optimisation. Collaborate with cross-functional teams including product, design, and data science to deliver innovative, customer-focused solutions. Work with modern technologies such as Python, Django, Cloud Firestore, BigQuery, and Elasticsearch to deliver scalable, reliable ...

environment. The Senior Business Systems Analyst leads requirements discovery, translates business objectives into scalable system solutions, and drives continuous improvement across finance processes, integrations, data models, and reporting. The role ensures system stability, compliance, and long-term scalability while supporting enhancements, testing, and production operations in a fast-paced … testing strategies based on functional and technical requirements Analyze, design, document, and validate system configurations supporting existing and new business processes, reporting, and data structures Collaborate closely with finance leaders to understand business goals, identify gaps, and recommend system-driven improvements Facilitate design reviews and solution walkthroughs with ...

looking for a Python Developer with strong experience in trading and risk management systems within investment banking. The role involves building backend applications and data processing logic supporting risk calculations, trade workflows and reporting. Key Responsibilities Develop and enhance Python-based applications for trading and risk use cases Build … data processing pipelines and automation scripts for trade, risk and reconciliation workflows Work with large financial datasets to support PnL, risk and reporting requirements Contribute to system design, architecture and scalability decisions Collaborate with quants, traders and risk teams to translate business requirements into technical solutions Develop and integrate ...

research infrastructure Work closely with quantitative researchers to translate models into production-grade systems Optimise performance across distributed systems handling large-scale financial data Contribute to architectural decisions in a fast-moving, intellectually rigorous environment Continuously improve code quality, testing, and deployment pipelines Candidate Profile We are specifically targeting … high-performance systems (C++, Python or similar) A track record of excellence, whether in industry, academia, or competitive environments Strong understanding of algorithms, data structures, and system design Desirable Experience Exposure to systematic trading, quantitative finance, or data-intensive environments Experience with distributed systems, concurrency ...

lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? Lead the technical vision … Elasticsearch. Mentor and guide engineers at all levels, fostering a culture of technical excellence and continuous improvement. Collaborate with cross-functional teams - including product, data, and design - to deliver innovative solutions that directly impact customer success. Evaluate and implement emerging technologies that enhance system performance and developer productivity. Take ...

lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? Lead the technical vision … Elasticsearch. Mentor and guide engineers at all levels, fostering a culture of technical excellence and continuous improvement. Collaborate with cross-functional teams - including product, data, and design - to deliver innovative solutions that directly impact customer success. Evaluate and implement emerging technologies that enhance system performance and developer productivity. Take ...