25 of 25 Data Structures Jobs in the City of London

Role – Data Modelling Lead Technology – Snowflake, SQL Server, PostgreSQL, Data Warehousing, Data Lake, Medallion, Data Vault, Data Fabric, Semantic modelling Location – London, UK Job Description We are seeking an experienced Data Modeler who can analyze and understand the existing customer data and analytics … models on SQL Server, and design efficient data models for Snowflake. This individual will work closely with multiple Business Analysts to gather requirements and translate them into optimized data structures, ensuring scalability and compliance with industry standards. A strong understanding of Insurance domain concepts—including Specialized Insurance ...

Data Engineer - £350PD - Remote Required Technical Skills Data Pipeline & ETL Design, build, and maintain robust ETL/ELT pipelines for structured and unstructured data Hands-on experience with AWS Glue and AWS Step Functions Implementation of data validation, data quality frameworks, and reconciliation checks Strong … error handling, monitoring, and retry strategies in production pipelines Experience with incremental data processing patterns (CDC, watermarking, upserts) AWS Data Services Amazon S3: data lake architectures, partitioning strategies, lifecycle policies DynamoDB: data modeling, secondary indexes, streams, and performance optimization Amazon Redshift: foundational querying, integrations, and performance ...

About our Team: LexisNexis is a data and analytics company with 10,500 colleagues serving customers in more than 150 countries. We’re one of the largest information and analytics companies on the planet. We design solutions that help our customers increase productivity, improve decision-making and outcomes … more successful. About the Role : As a Data Analyst, you will consult with internal stakeholders to understand problems, collect and analyze data to support data-driven business decisions, and increasingly leverage AI-enabled tools and techniques to enhance analysis and visualization. You will use data tools ...

Data Engineer - 14-Week Contract (Outside IR35) Likely to Extend Start Date: 12th January Rate: £350 per day Location: Remote (UK-based) Interview: Immediate - Offer before Christmas We are seeking an experienced Data Engineer to join a 14-week project focused on building robust data pipelines … integrating complex data sources. This is an outside IR35 engagement, offering flexibility and autonomy. Key Responsibilities Design and implement ETL/ELT pipelines with strong error handling and retry logic. Develop incremental data processing patterns for large-scale datasets. Work with AWS services including Glue, Step Functions ...

days per week) Location: Central London About the Role and Client A leading law and professional services organisation is looking for a technically proficient Data Analyst to join the IT Department within the Strategy & Architecture Team. This role will have a strong focus on API design and integrations between … systems. This role is critical in enabling data-driven decision-making and ensuring seamless data exchange across internal systems and external platforms. Key Responsibilities Analyse and interpret complex datasets to support IT operations and strategic initiatives. Design, document, and maintain APIs that facilitate secure and efficient integration ...

memory management, SIMD, and hardware/software optimization ("close to the metal"). Concurrency: Proficiency in multi-threading, lock-free architectures, and distributed systems. Data structures and algorithms: Open-addressing, ring buffers, heaps, price-time priority, spinlocks. The Challenge You will engineer high-throughput, low-latency data … roles, high GPA) or competitive programming background (IOI, ICPC). Assessment Criteria : Candidates will be tested on algorithmic speed, coding velocity, systems engineering, concurrency, data structures and algorithms and debugging. Exclusions: High-level application developers (Java/Python) or vibecoders. ...

operation of our SAP SuccessFactors platform. The role supports the effective delivery of HR systems and processes by ensuring accurate data, reliable system performance, and a consistent user experience across the employee lifecycle. This position plays a key role in supporting key modules including Employee Central, Performance & Goals, Recruitment … Learning, and People Stories. It also contributes to onboarding new users—particularly during acquisitions—by configuring fit-for-purpose structures and enabling smooth transitions into our people systems. The role provides technical support for the Unily platform in collaboration with IT and Internal Communications, and manages the HRIS helpdesk ...

make AI useful in production. In the immediate future, your time will be split between crafting complex AI processing architectures (40%) and hands-on data/backend engineering (40%), with the rest spent doing whatever is needed to ship. As we mature, your focus will shift toward closing … loop: using real-user data to optimize the platform via online evaluation and targeted, data-driven models. What You’ll Do Architect & Engineer AI Systems: You won’t just call an API; you will build robust processing architectures that leverage off-the-shelf LLMs, RAG pipelines, and context ...

CAMPAIGN DATA ANALYST UP TO £50,000 LONDON - HYBRID - 2X A WEEK Please note: you must have full UK right to work and be familiar with the UK education system. ABOUT THE BUSINESS This purpose-led brand and social impact agency has over 20 years’ experience delivering insight-driven … Ireland education systems, partnering with schools and delivering education-focused initiatives at scale. The agency operates with a strong emphasis on data quality, accuracy, and insight-led storytelling. Data plays a central role in shaping campaigns, forecasts, and strategic decisions, making this a business-critical hire. THE TEAM ...

MARKETING DATA ANALYST UP TO £50,000 LONDON – HYBRID (2X PER WEEK IN OFFICE) *Please note, you must be a UK resident and hold full right to work* ABOUT THE BUSINESS This is a brand and social impact agency with over 20 years’ experience helping organisations connect meaningfully with … business focuses on deep engagement with the UK and Ireland education systems, working in partnership with schools and delivering education-led campaigns at scale. Data sits at the heart of how the agency operates. There is a strong emphasis on data quality, accuracy, and insight-led storytelling, with ...

skilled C++ Developer? You could be progressing your career in a senior, hands-on role at a global market data provider whilst enjoying a range of perks and benefits. As a C++ Developer 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/ ...

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 ...

research to enhance optimisation frameworks and algorithm performance. Required Experience Strong foundation in mathematics, optimisation, or operations research. Demonstrated Python engineering skills (OOP, algorithms, data structures). Ability to transform theoretical models into practical solutions. Strong communication and teamwork skills. Preferred Experience MSc/PhD in a quantitative ...

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 ...

handling everything from trade intake and real time position tracking to PnL calculation, inventory control and internal routing logic. The platform processes heavy market data flows and fast changing state across both live and historical workloads, so efficient memory management, intelligent data structures and tight control … environment. We are looking for engineers who enjoy solving problems at scale and want to design robust components that can ingest, compute and distribute data across a distributed Linux estate. You will be involved in building services that must respond predictably under load, propagate risk metrics across internal systems ...

technical presentations. Proactively identify areas for improvement in processes and tooling within Agile workflows. Apply best practices in object-oriented design, SOLID principles, and data structures. Tech Stack: Python, FastAPI, Django AWS, Kubernetes, Helm, Terraform PostgreSQL, OpenSearch GitHub Required Experience & Skills: Strong experience building backend services in Python … framework). Solid understanding of databases, OO design, data structures, and SOLID principles. Analytical mindset with strong problem-solving skills and process improvement focus. Excellent collaboration and communication skills to work with peers and business stakeholders. Experience with cloud infrastructure and containerized environments (AWS, Kubernetes, Helm, Terraform). ...

experimentation, optimization, and personalization strategies to improve UI performance and deliver a seamless user experience. Collaborate with cross-functional teams including business partners, engineers, data scientists, and UX designers to design, build, and deliver high-quality applications and services. Utilize optimization tools within an Agile squad to continuously improve … testing to write regression tests Solid experience of website personalisation and audience targeting Solid experience of working with fully responsive websites Advanced understand of Data analytics and Tag manager (GTM Nice to Have Experience of developing in TypeScript and JavaScript, Python or Java. Prior use of split testing platforms ...

coding, across backend, frontend, and infrastructure. Design scalable systems and technical architecture for rapidly evolving AI products. Collaborate with cross-functional teams — product, design, data, and AI — to ship impactful features. Explore and integrate the latest advancements in large language models and generative AI. Help build a strong, values … should have Experience leading or mentoring software engineers. Solid background across the full stack (Ruby, Go, Python, Typescript) Strong grasp of system design, data structures, and scalable architectures. Familiarity with cloud platforms (e.g. GCP, AWS) and AI tooling. A product-focused mindset and passion for solving real-world ...

foundation in probability, statistics, and linear algebra. Solid intuition for ML/AI methods. Strong Python skills; ability to read C++. Knowledge of algorithms, data structures, and performance optimization. Comfortable with Linux/Unix, Git, and modern dev practices (tests, CI/CD, containers). Clear communicators ...

technical escalation point for complex incidents, investigating issues at application, database, and integration level before engaging vendors. Use SQL to interrogate data, validate incidents, confirm fixes, and support root cause analysis. Coordinate incident, problem, and change activities across internal teams and third-party suppliers, ensuring accountability through to resolution. … environment. Strong understanding of policy and claims systems and how they operate at system level. Practical experience using SQL to support application troubleshooting and data validation. Experience working with offshore or third-party vendors in an application support or service ownership capacity. Familiarity with release management, incident management ...

/4HANA. Proven background in real estate contracts, lease management, valuation, postings, and IFRS 16 processes. Deep understanding of configuration, data structures, and system architecture within RE-FX. Experience working on full lifecycle SAP implementations or major enhancements. Ability to work independently in a remote environment and manage ...

deep and broad. They are hands on, producing both detailed technical work and high-level architectural designs. Basic Experience Knowledge of object-oriented design, data structures, and algorithms Experience (non-internship) in professional software development Preferred Experience Experience designing and building large-scale systems in a multi-tiered ...

MARKETING DATA ANALYST UP TO £50,000 LONDON – HYBRID (2X PER WEEK IN OFFICE) *Please note, you must be a UK resident and hold full right to work* ABOUT THE BUSINESS This is a brand and social impact agency with over 20 years’ experience helping organisations connect meaningfully with … education systems, working in partnership with schools and delivering education-led campaigns at scale. THE ROLE This is a varied, fast-paced, agency-style Data Analyst role combining hands-on analysis, forecasting, CRM insight, and increasing client-facing engagement over time. KEY RESPONSIBILITIES Analysis & Insight Act as a triage ...

PMOs to ensure smooth deployment and integration Design and maintain Celoxis workflows, templates, dashboards, and reports aligned with CoE standards. Establish governance for data structure, permissions, and version control within Celoxis. Serve as key liaison with Celoxis vendor support for issue resolution, feature requests, and updates. Knowledge … Knowledge Hub. Run regular clinics and drop-in sessions to reinforce standards and collect user feedback. Conduct adoption and usage reviews, reporting on engagement, data quality, and compliance. Capture improvement opportunities and iterate tool and hub functionality. Reporting, Benchmarking & Governance Develop best practice for project reporting and develop approach ...

needs into actionable, testable product requirement s.• Work closely with engineering to maintain API reliability, documentation, and deployment consistency across market s.• Partner with data and tech teams to establish real-time data pipelines between marketing systems and the core platform, enabling event-based personalisation and fast campaign … trigger s.• Partner with marketing and data teams to track attribution and retention metrics and maintain data structure consistency across platform s.• Support the data and analytics teams in defining and implementing segmentation, audience management, and real-time personalisation strategie s.• Work with data teams ...