1 to 25 of 30 Data Structures Jobs in Central 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 ...

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 ...

backgrounds considered) Strong stakeholder management skills, with the ability to drive requirements from informal discussions through to formal sign-off Very good understanding of data, data structures, and data warehousing concepts Hands-on experience with SQL for data analysis Strong Excel skills and experience using … Power BI for reporting and visualisation Experience working across multiple reporting types (actuarial, financial, operational, etc.) Ability to explore and understand underlying databases and data flows ...

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 ...

based in London. This role is ideal for someone with strong analytical capability, advanced Excel skills, and an interest in finance systems, reporting, and data management. The successful candidate will play a key role in ensuring Finance teams have accurate, reliable, and timely data to support reporting, planning … business decision-making. The role combines finance systems administration, data model management, reporting support, and troubleshooting across a range of platforms including TM1 (Planning Analytics), Power BI, Coupa, and financial reporting systems. Key Responsibilities Support the administration and maintenance of finance systems and reporting data models Ensure finance ...

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 ...

Finance, Investments, and Finance Systems teams, translating business needs into detailed technical specifications that enable the build of future-state reporting on a finance data warehouse. Responsibilities: Document current Investments reporting processes, including outputs, stakeholders, frequency, and data sources Inventory existing dashboards, reports, KPI definitions … dependencies, and pain points Identify gaps between current reporting and requirements of the new stage-gated investment process Develop a clear scope document outlining data entities, KPIs, reporting cadence, audiences, and outputs Define a pragmatic, tactical classification and data capture approach to enable accurate reporting within existing constraints ...

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 ...

multiple international markets. Youll drive product strategy, roadmap planning, user research, stakeholder engagement, platform optimisation, analytics capability, and feature delivery while collaborating with business, data, and technical teams. Youll combine strategic thinking with hands-on execution to deliver an exceptional user experience and build a world-class digital product. … knowledge, and business goals Translate business and user requirements into well-defined epics, user stories, and acceptance criteria Lead prioritisation conversations with Sales and Data teams, balancing user needs against business value and technical feasibility Oversee feature development end-to-end from discovery through to UAT and release working ...

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 ...

skilled Backend Software Engineer with strong C++ skills? You could be progressing your career in a senior, hands-on role at a global market data provider. As a Backend Software Engineer you will join an Agile team focussed on building and maintaining Exchange Connectivity software systems that require real … time and low latency, maintaining data feeds and developing key underlying transport protocols for data transmission. The platform has been built with C++ and C# deploying to AWS and requires high scalability and low latency - they currently handle 40 billion messages per day. Location/ ...

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 ...

have a good understanding of AWS You have a thorough understanding of software development and Computer Science fundamentals such as Object Oriented Programming, Data Structures and Design Patterns You are familiar with DevOps, CI/CD pipelines You're collaborative, enjoy problem solving and interacting with clients Apply ...

join one of its largest systematic trading teams. The team operates a state-of-the-art, cloud-based platform supporting real-time market data processing and multi-timescale alpha generation, working closely with researchers to deploy and scale trading strategies. As a Quant Developer (3–8 years of experience … experience in a relevant environment (systematic trading, HFT, or performance-critical systems) Strong proficiency in low-latency C++ development on Linux Solid understanding of data structures, algorithms, and system design Ability to work in a fast-paced, highly collaborative environment This opportunity offers a highly competitive compensation package ...

ownership of a technology start-up. You’ll work on a global, low-latency trading platform spanning multiple continents, covering: Real-time market data capture Order entry and connectivity across numerous exchanges Robust networking and monitoring systems Scaling and performance optimisation of core infrastructure The tech stack is primarily … freedom to shape your impact. What We’re Looking For Strong C++ skills (assessment will form part of the process) Deep understanding of data structures and performance optimisation Experience building client-server network applications Curiosity to understand how C++ standard libraries and systems work “under the hood” Strong ...

resources and external partners to deliver enhancements effectively Manage upgrades, patches, and module or feature implementations Establish and maintain strong system governance, documentation, and data quality standards Oversee issue triage and ensure effective resolution with support teams and vendors Communicate roadmap priorities, progress, and releases to stakeholders … technical or functional deliverables Analytical and detail-focused approach with a continuous improvement mindset Desirable Experience working with complex enterprise finance platforms Familiarity with data structures, reporting, or system integrations Experience coordinating cross-functional delivery teams Background in legal, financial, or professional-services organisations ...

Software Engineer | Canvas | SVG | High-Performance Charting | London to £200,000 depending on exp. Most data visualisation roles sit on top of libraries. This one builds the engine behind them. I’m hiring a Senior Engineer to work on a widely-used charting library used by thousands of developers … building data-intensive applications. This is core product engineering — focused on rendering, performance, correctness, and API design. This is not a typical frontend role. You’ll be working closer to a graphics engine than an application layer. What you’ll be doing Designing and building core features across rendering ...