1 to 25 of 32 SQL Optimisation Jobs in London

asset management firms. Public Sector: We're trusted by multiple UK government departments and public sector organisations to deliver predictive maintenance systems, supply chain optimisation, and process automation. SaaS, Manufacturing & More : From innovative SaaS providers to global manufacturing leaders, our cross-industry expertise ensures we bring diverse perspectives to … Lead high-impact analytics projects across diverse sectors—from building predictive models that help private equity firms identify value creation opportunities to creating inventory optimisation algorithms for household-name retailers.Tackle Exciting Challenges: Design and implement technically sophisticated solutions such as real-time analytics platforms for FTSE 100 companies, automated … ensure our solutions are production-ready and maintainable. Mentor Rising Talent: Guide junior analytics engineers and data scientists, sharing your expertise in pipeline design, SQL optimisation, and Python development. You'll help build the next generation of analytics engineering talent at QuantSpark. Shape Client Solutions: Work directly with More ❯

asset management firms. Public Sector: We're trusted by multiple UK government departments and public sector organisations to deliver predictive maintenance systems, supply chain optimisation, and process automation. SaaS, Manufacturing & More : From innovative SaaS providers to global manufacturing leaders, our cross-industry expertise ensures we bring diverse perspectives to … Lead high-impact analytics projects across diverse sectors-from building predictive models that help private equity firms identify value creation opportunities to creating inventory optimisation algorithms for household-name retailers.Tackle Exciting Challenges: Design and implement technically sophisticated solutions such as real-time analytics platforms for FTSE 100 companies, automated … ensure our solutions are production-ready and maintainable. Mentor Rising Talent: Guide junior analytics engineers and data scientists, sharing your expertise in pipeline design, SQL optimisation, and Python development. You'll help build the next generation of analytics engineering talent at QuantSpark. Shape Client Solutions: Work directly with More ❯

frameworks like Apache Spark. Experience with cloud platforms (AWS, Azure, GCP) and services (S3, Redshift, BigQuery). Knowledge of data modelling, database systems, and SQL optimisation. Other key criteria Knowledge of UK broadcast industry & broadcast/OTT advertising market. Understanding of digital marketing and advertising industry. Familiarity with data More ❯

microservice architectures. Deep understanding of event-driven systems and message queues (e.g. NATS, RabbitMQ, Kafka). Strong understanding of relational database design principles and SQL optimisation techniques. Experience designing and implementing RESTful APIs. Experience with relational databases (e.g., PostgreSQL). Solid understanding of data structures, algorithms, and software More ❯

practices, version control (Git) , and CI/CD pipelines . Comfortable with Agile methodologies and collaborative team-based development. Proficient in writing and optimizing SQL queries and working with relational databases . Familiar with Linux/Unix systems , shell scripting, and command-line utilities. A careful, methodical coder with More ❯

automated testing, and CI/CD deployment (e.g., Github Actions, Jenkins). Experience with distributed frameworks like Apache Spark, data modeling, database systems, and SQL optimization. Experience with cloud platforms (AWS, Azure, GCP) and services like S3, Redshift, BigQuery. Additional desirable qualities: Knowledge of UK broadcast industry & digital marketing. More ❯

engineer with a focus on Power BI solutions. Strong knowledge of Power BI architecture, data modeling, DAX, and AML. Proficient in designing and optimizing SQL queries, stored procedures, and data warehouses. Hands-on experience with ETL tools and data integration processes. Familiarity with data governance, security, and compliance standards. More ❯

and secure applications. Experience working with cloud-based environments, particularly AWS. Familiarity with performance optimization and debugging tools. Knowledge of database design principles and SQL optimization. Engineering Mindset Ability to understand and consider the broader business context and long-term implications of technical decisions. Willingness to take ownership, innovate More ❯

and secure applications. Experience working with cloud-based environments, particularly AWS. Familiarity with performance optimization and debugging tools. Knowledge of database design principles and SQL optimization. Engineering Mindset Ability to understand and consider the broader business context and long-term implications of technical decisions. Willingness to take ownership, innovate More ❯

message flows. Expertise in event-driven microservices development. A proven track record in building and optimizing high-throughput, distributed systems. Extensive experience with PostgreSQL, SQL optimization, and architecting high-throughput transactional databases. Hands-on experience deploying and managing services on AWS, with a solid understanding of container orchestration tools More ❯

and secure applications. Experience working with cloud-based environments, particularly AWS. Familiarity with performance optimization and debugging tools. Knowledge of database design principles and SQL optimization. Ability to understand and consider the broader business context and long-term implications of technical decisions. Willingness to take ownership, innovate, and proactively More ❯

and secure applications. Experience working with cloud-based environments, particularly AWS. Familiarity with performance optimization and debugging tools. Knowledge of database design principles and SQL optimization. Ability to understand and consider the broader business context and long-term implications of technical decisions. Willingness to take ownership, innovate, and proactively More ❯

Azure Medallion architecture principles in future-state design. Data Ingestion & Integration Design and implement ingestion pipelines into Azure (Data Lake, Synapse, Blob Storage, Azure SQL). Ingest structured, semi-structured, and unstructured data from APIs, FTP/SFTP, cloud platforms, and file-based sources. Manage data integrations with suppliers … analytics and reporting needs. Apply data validation, cleansing, and lineage tracking throughout the pipeline lifecycle. Support both existing and future ETL workloads with strong SQL and scripting capabilities. Data Platform & Server Management Revamp and support existing database designs to enable a scalable migration to Azure. Introduce and enforce standards … and governance around data structures and code. Optimize T-SQL code and SQL Server performance before deploying into production. Manage consistent data platforms across regions with a focus on reusability and modularity. Monitor and control database file growth, indexing strategies, and performance tuning. Develop scalable solutions based on More ❯

maintain a highly scalable, reliable and efficient data system to support the fast growing business. You will work with analytic tools, can write excellent SQL scripts, optimize performance of SQL queries and can partner with internal customers to answer key business questions. We look for candidates who are … system. - 2+ years of data engineering experience - Experience with data modeling, warehousing and building ETL pipelines - Experience with one or more query language (e.g., SQL, PL/SQL, DDL, MDX, HiveQL, SparkSQL, Scala) - Experience with one or more scripting language (e.g., Python, KornShell) - Knowledge of AWS Infrastructure - Knowledge … of writing and optimizing SQL queries in a business environment with large-scale, complex datasets - Strong analytical and problem solving skills. Curious, self-motivated & a self-starter with a 'can do attitude'. Comfortable working in fast paced dynamic environment - Bachelor's degree in a quantitative/technical field More ❯

maintain a highly scalable, reliable and efficient data system to support the fast growing business. You will work with analytic tools, can write excellent SQL scripts, optimize performance of SQL queries and can partner with internal customers to answer key business questions. We look for candidates who are … QUALIFICATIONS - 2+ years of data engineering experience - Experience with data modeling, warehousing and building ETL pipelines - Experience with one or more query language (e.g., SQL, PL/SQL, DDL, MDX, HiveQL, SparkSQL, Scala) - Experience with one or more scripting language (e.g., Python, KornShell) - Knowledge of AWS Infrastructure - Knowledge … of writing and optimizing SQL queries in a business environment with large-scale, complex datasets - Strong analytical and problem solving skills. Curious, self-motivated & a self-starter with a ‘can do attitude’. Comfortable working in fast paced dynamic environment PREFERRED QUALIFICATIONS - Bachelor's degree in a quantitative/ More ❯

opportunities employer committed to removing bias and barriers, supporting authenticity and inclusion throughout your application journey. The must haves Proficiency in writing and optimizing SQL queries within Google BigQuery, with a solid understanding of GCP tools and services for data management and analysis. Experience creating interactive dashboards and reports More ❯

coverage, and operational reliability Ability to handle complex data sets and transactions in a financial services context Strong experience working with databases and optimising SQL queries Desirable (Nice to have) Experience in fintech, payments, banking, or working with payments and cards Experience of working in a regulated and/ More ❯

In this role, you will: Understand a broad range of Amazon's data resources and processes. Manipulate/mine data from database tables using SQL, and from log files by writing scripts (e.g. PERL, Python). Interface with Global Stakeholders, Data Engineers, and Business Analysts across time zones to … better-rounded professional. BASIC QUALIFICATIONS - Bachelor degree in mathematics, statistics, computer science, engineering. 8+ yrs of experience in Analytics/BI, writing and optimizing SQL/Python with large-scale, complex datasets. - 3+ years' experience using business intelligence tools like QuickSight, Tableau, PowerBI. - Strong financial acumen and analytics skills More ❯

QUALIFICATIONS - 1+ years of data engineering experience - Experience with data modeling, warehousing and building ETL pipelines - Experience with one or more query language (e.g., SQL, PL/SQL, DDL, MDX, HiveQL, SparkSQL, Scala) - Experience with one or more scripting language (e.g., Python, KornShell) PREFERRED QUALIFICATIONS - Experience with AWS … technologies like Redshift, S3, AWS Glue, EMR, Kinesis, FireHose, Lambda, and IAM roles and permissions - Experience writing and optimizing SQL queries with large-scale, complex datasets - Experience with any ETL tool like, Informatica, ODI, SSIS, BODI, Datastage, etc. Our inclusive culture empowers Amazonians to deliver the best results for More ❯

and reporting to provide Deutsche Bank sales managers a clear view on clients' activity and profitability. We are seeking an experienced Oracle PL/SQL Developer with a strong background in database development to join our cross-functional application development team. The ideal candidate should have significant hands-on … experience in designing, developing, tuning and maintaining PL/SQL that underpins important analytical applications. This is an excellent opportunity to contribute to the development of strategic database systems and work in a collaborative and dynamic environment. What Well Offer You A healthy, engaged and well-supported workforce are … opportunity to support a wide ranging CSR programme + 2 days volunteering leave per year Your Key Responsibilities Design, develop, and maintain PL/SQL code for database procedures, packages, functions and triggers. Work as part of a cross-functional team to gather and analyze business requirements, translate them More ❯

maintain databases and datasets optimised for AI consumption. Design and maintain scalable ETL/ELT pipelines to transform and prepare data. Maintain and optimise SQL-based transformations and data models to ensure accuracy and performance. Solutions Lifecycle Troubleshoot and resolve data-related issues, improving data flow efficiency and performance. … focused on data structuring, transformation, and visualisation. Python skills, particularly for scripting, data manipulation, and integrating with AI tools and APIs. Experience in optimising SQL queries and managing complex datasets. Comfortable using version control tools such as Git to collaborate and maintain clean code practices. Nice to have An More ❯

What you'll be involved in: Collaborating closely with traders, analysts, and stakeholders to gather requirements and develop tailored visualization solutions. Writing and optimizing SQL queries to effectively extract, analyze, and present data. Developing and continuously improving visualization best practices and documentation. What we need from you: Proven experience … creating impactful data visualizations and dashboards. Strong proficiency in SQL with experience querying complex databases. Programming experience in Python. Solid understanding of database structures, data modeling concepts, and performance optimization. Excellent analytical, problem-solving, and communication skills. Familiarity with DBT (Data Build Tool) or similar frameworks is advantageous. Experience More ❯

deviations, while meeting with business stakeholders to understand their metrics requirements. The afternoon could be spent building QuickSight visualizations for evaluation dashboards and optimizing SQL queries for newly defined business metrics. Throughout the day, you'll partner with data engineers on implementing quality checks, write Python scripts to automate … a collaborative environment where innovation and work-life harmony thrive. BASIC QUALIFICATIONS - Experience with data visualization using Tableau, Quicksight, or similar tools - Experience with SQL - Experience with scripting language (e.g., Python, Java, or R) - Experience in the data/BI space - Experience in analyzing and interpreting data with Redshift More ❯

to-pay teams across the globe to protect organisational spend. We invite you to embark on a transformative journey with us as an Azure SQL Database Engineer. Your Journey Starts Here – Azure SQL Database Engineer If you're passionate about a role that involves improving and maintaining innovative … You’ll spend half of your time working with our developers, evaluating and improving the database design, improving database performance, and writing and optimising SQL queries. Expect to make good use of your extensive Azure SQL database knowledge. You’ll spend the other half of your time working More ❯

creating impactful dashboards and visual reports, responding to business data requests, and providing actionable insights to various stakeholders. You will leverage your experience with SQL and BigQuery to build efficient data models and enhance the company's data-driven decision-making processes. Specific duties will include: Developing and maintaining … Power BI dashboards and reports to present key business data Writing and optimising SQL queries to manipulate and analyse large datasets Using BigQuery to manage and query cloud-based data Collaborating with stakeholders to capture business requirements and translate them into technical specifications Troubleshooting and resolving issues related to … goals YOUR SKILLS AND EXPERIENCE: The ideal Power BI Developer will have: Strong commercial experience in building dashboards and reports using Power BI Advanced SQL skills, including complex query writing and data manipulation Experience working with BigQuery or similar cloud-based data platforms A proven track record of delivering More ❯