1 to 25 of 54 Performance Tuning Jobs in London

enterprise Linux/AIX systems , ideally gained within a banking or financial services environment . You'll be responsible for ensuring the stability, performance, and availability of business-critical banking and finance applications, working closely with senior IT stakeholders and wider application teams. Key Responsibilities Administer, maintain, and optimise … databases supporting Flexcube banking applications Manage Linux (RHEL/Oracle Linux) and AIX environments hosted on IBM Power 10 infrastructure Perform system upgrades, patching, performance tuning, and capacity planning Support high availability and disaster recovery solutions using Oracle RAC, ASM, RMAN, and Data Guard Collaborate with application ...

across podcasting, video and next generation consumer experiences. Their analytics and BI capability sits at the heart of digital strategy, supporting product teams, content performance and audience engagement. The business is actively modernising its data stack, moving away from legacy BI platforms toward scalable, best in class solutions. … optimise Power BI solutions, covering data modelling, DAX and semantic layers. Design robust data models using star schema principles and well managed relationships. Own performance tuning across Power BI models and reports to ensure scalability and usability. Partner closely with data engineering and analytics to shape high quality ...

hands-on Senior Data Architect who is equally comfortable designing the target state for a multi-system SQL data estate, writing and tuning the T-SQL that delivers it, and standing up the security, monitoring and operational practices that keep it running. You will own data architecture across … framework and PowerShell development at expert level partition design and partition-aligned indexing, clustered/nonclustered index strategy, deduplication, parallel-run cutovers, schema migration, performance tuning of high-impact production queries. Driving the in-flight ETL replatform replacing legacy SSIS jobs with a table-driven, parallel ...

Lambda; strong PySpark/Python and SQL for large-scale batch processing. Data engineering at scale in government or similarly complex domains, including performance tuning and data quality management. CI/CD & DevOps: pipelines and IaC (e.g., Terraform), automated testing, and release governance. Version control & collaboration: Git/ ...

doing Designing, developing, and maintaining MS SQL Server databases, writing T-SQL queries, stored procedures, views, and functions to support business operations. Optimising query performance through indexing, execution plans, and tuning techniques to ensure reliable, high-speed data access. Developing and managing ETL processes for data integration … migration, working closely with data and application teams to deliver seamless solutions. Monitoring database performance proactively, resolving issues before they impact the business, and supporting database deployments and release processes. Gathering and translating data requirements from stakeholders, and producing clear documentation for database designs, processes, and standards. What ...

doing Designing, developing, and maintaining MS SQL Server databases, writing T-SQL queries, stored procedures, views, and functions to support business operations. Optimising query performance through indexing, execution plans, and tuning techniques to ensure reliable, high-speed data access. Developing and managing ETL processes for data integration … migration, working closely with data and application teams to deliver seamless solutions. Monitoring database performance proactively, resolving issues before they impact the business, and supporting database deployments and release processes. Gathering and translating data requirements from stakeholders, and producing clear documentation for database designs, processes, and standards. What ...

influence decisions and drive adoption of data products Ÿ Data Integration Ÿ Standardise data across disparate systems with varying structures to support consistent analytics, reporting and performance tracking Ÿ Define and implement robust data validation, monitoring and documentation practices in line with good data governance principles Ÿ Work closely with IT and business … Experience leading multi-stakeholder analytics projects and engaging confidently with senior decision-makers Technical Ÿ SQL: Advanced querying capabilities, including complex joins, stored procedures and performance optimisation Ÿ Python & VBA: Strong programming skills including pandas, data manipulation libraries and proficient in Excel automation and macro development Ÿ Power Automate & SharePoint: Proficient ...

Clustering Keys ✅ Materialized Views ✅ Cost Governance ✅ Query Optimization Databases ✅ PostgreSQL ✅ Oracle Database ✅ Redis ✅ MongoDB ✅ TimescaleDB ✅ InfluxDB Skills Required: Schema Design Indexing Strategy Replication Database Performance Tuning Data Lifecycle Management Data Integration & Engineering ✅ CDC (Change Data Capture) ✅ Debezium ✅ Kafka Connect ✅ ETL/ELT ✅ Apache Spark ✅ AWS Glue ✅ Event-Driven … lineage, and quality controls. Snowflake Leadership Design and optimize Snowflake architecture. Build ingestion frameworks and transformation standards. Implement security and compliance controls. Manage warehouse performance and costs. Database Governance Review database schemas and performance. Define migration and versioning standards. Ensure consistency between transactional and analytical systems. Data Governance Implement ...

Power BI to augment client decision-making and operational outcomes. Architecture, Governance & Standards Translate business requirements into end-to-end data architecture, balancing performance, cost, security, and maintainability. Apply and advise on security patterns and contribute to governance-by-design. Enforce technical documentation standards, architectural artefacts, and implementation patterns … audiences. Strong relationship-building and stakeholder management in complex client environments. Code Management CI/CD for Fabric items. Git-based workflow. Testing frameworks. Performance tuning patterns. Cost/capacity optimisation. Desirable Skills & Experience Experience across adjacent Microsoft services often paired with Fabric (e.g., Azure Synapse Analytics, Azure ...

data structures Hands-on experience with AWS cloud services, particularly: EC2, RDS, Lambda, Athena, Glue Expertise in relational and/or NoSQL databases, including performance tuning Proficiency in Python or similar programming/scripting languages Experience with Test Driven Development (TDD) and automated testing frameworks Desirable Skills Familiarity ...

Manage virtual machine lifecycle including provisioning, maintenance, migration, and decommissioning Perform OS rebuilds and bare metal provisioning using Rebar Maintain infrastructure stability, availability, and performance Operating Systems Advanced Linux administration including troubleshooting, patching, hardening, and performance tuning Windows Server administration and operational support Perform system upgrades, rebuilds … recovery activities Cloud Support Provide operational support for AWS cloud environments Troubleshoot cloud infrastructure, performance, networking, and access issues Monitor cloud resources and recommend improvements for reliability, security, and cost efficiency Support hybrid infrastructure environments Infrastructure as Code and DevOps Strong experience with Terraform for infrastructure provisioning and updates ...

Data Warehousing, AWS, SQL Server DBA/Data Engineer) Founded in 2010, our client is a rapidly growing software company focused on delivering high-performance data solutions for enterprise clients. With a strong presence across the U.S. and Europe, they're now scaling their operations … their expansion, they are looking for a talented SQL/Data Engineer. In particular, they are looking to move into the field of high-performance data analytics. contribute to the ongoing development and performance optimisation of their mission-critical data platforms. Our client is looking for passionate ...

data models Creating dashboards and reports for senior leaders and business users Improving data quality, documentation, and governance Optimising SQL queries and dashboard performance Working with stakeholders to define KPIs and technical requirements Supporting junior engineers with code reviews and BI best practice Skills and experience: 5+ years' experience … data engineering, analytics engineering, or technical analytics Strong SQL skills, including joins, window functions, and performance tuning Experience with Databricks, Snowflake, or BigQuery Strong data modelling experience, ideally with dbt Experience with BI tools such as Omni, Power BI, Tableau, Looker, or Sigma Strong stakeholder management and communication ...

requirements and deliver tailored solutions. Ensure data quality, integrity, and security across all systems and processes. Optimise and troubleshoot existing data architectures to improve performance and reliability. Implement best practices for data engineering, including version control, testing, and documentation. Work closely with stakeholders to provide insights and support data … Python for ETL/ELT pipelines Proven ability to lead, mentor, and develop data engineering teams Hands-on experience with data warehousing, modelling, and performance tuning Solid understanding of data governance, quality, and lineage frameworks Experience implementing monitoring, automation, and platform reliability practices Strong stakeholder management skills, translating ...

Define environment strategies (dev/test/prod), CI/CD pipelines, and release processes for Databricks deployments Implement monitoring, logging, cost optimisation, and performance tuning across the platform Design and implement data pipelines using Delta Live Tables, Auto Loader, and Databricks Workflows for both batch and streaming … GDPR, ISO 27001, sector-specific standards) What success looks like in the role: Delivery of robust, secure, and scalable Databricks platforms that meet client performance and cost expectations Clear, well-architected solutions that balance flexibility, governance, and operational efficiency Strong client relationships built on trust, technical credibility, and effective ...

optimal results, conforming to standards for but not limited to quality, safety and sustainability. In doing so, they ensure compliance with the defined scope, performance, cost, ROI and schedule through agile delivery and ways of working. The role forms part of the data product teams within a business unit … cost and query optimization including experience with CapitalOne Slingshot. Expertise in advanced concepts like setting up resource monitors, RBAC controls, virtual warehouse sizing, query performance tuning, Zero copy clone, time travel and understanding of how to use these features. Awareness in Data Migration from RDBMS, SAP systems, Salesforce ...

operational improvement programs .Strong troubleshooting and problem-solving skills with the ability to resolve complex platform and integration issues .Experience in platform upgrades, migrations, performance tuning and environment optimization activities .Ability to produce architecture documentation, solution designs, technical standards and operational procedures .Excellent stakeholder management, communication and collaboration ...

transactions and flows Driving projects from inception through design, build, testing and release Core requirements: Strong C#/.NET development experience Advanced SQL skills (performance tuning, complex queries, data modelling) Azure cloud experience (App Services, Functions, Service Bus, DevOps etc.) Experience building highly available, resilient systems Excellent communication ...

ground running. Extensive Database experience, focusing on PostgreSQL, MySQL Server and CosmosDB Strong Infrastructure as Code (IaC) and Automation Database monitoring and performance tuning SQL replication Deep Azure background Patching, upgrades and maintenance High availability database environments Highly Desirable Skills: Terraform CI/CD pipelines Azure DevOps Kubernetes … Database Engineer will be responsible for: Managing and maintaining cloud and on-prem database environments Supporting critical 24/7 production systems Improving database performance, availability, and resilience Building automation and Infrastructure as Code solutions Implementing and improving monitoring across database platforms Managing backup, recovery, disaster recovery, and maintenance ...

Microsoft Graph. SharePoint Administration & Operations Administer both SharePoint SE (on-prem) and SharePoint Online environments. Manage updates, cumulative patches and platform maintenance. Monitor performance, availability, capacity and reliability. Oversee site collections, permissions, authentication, service applications and governance. Support backup, restore and disaster recovery processes. Troubleshoot complex cloud … React, HTML5, CSS3. Strong REST API and Microsoft Graph integration experience. Solid C#/.NET framework experience. Deep knowledge of SharePoint on-prem administration, performance tuning, patching and troubleshooting. Experience with BCS and creating External Content Types. Strong SQL Server skills. Understanding of authentication, permissions, governance and security ...

C++) - Experienced in data persistence across SQL (Postgres, MySQL), NoSQL (Cassandra, MongoDB) and TSDB ( TimescaleDB , InfluxDB , Prometheus TSDB) - Skilled in schema design, optimisation and performance tuning Distributed Systems & State Management - Strong understanding of distributed systems, transaction management and telemetry pipelines - Understands how state is managed across multiple systems ...

administration experience to own and scale its enterprise graph data platform. This is a hands-on platform ownership role focused on ensuring the stability, performance, and governance of Neo4j environments supporting critical enterprise data workloads. Key Responsibilities Own the design, deployment, and administration of Neo4j graph platforms Ensure high … availability, performance, scaling, backup, and recovery of production systems Define and enforce platform standards, governance, and operating procedures Manage cluster operations, monitoring, and incident response Optimise graph database performance and support large-scale data workloads Integrate Neo4j with broader enterprise data infrastructure (ETL, APIs, data platforms) Support data ...

Database Engineer to join a high-performing database and platform engineering team. This is a hands-on role focused on Oracle database administration, automation, performance optimisation and platform engineering across large-scale enterprise environments. The Oracle Database Engineer role is suited to an experienced Oracle professional who enjoys solving … implement permanent solutions through automation and engineering improvements Reduce manual operational workload through scripting and automation initiatives Support application development teams with database performance, architecture and product selection guidance Provide L3 support across Oracle Database and Exadata Cloud environments Design and optimise database models to support enterprise applications Contribute ...

engineering standards and CI/CD practices across the platform. The Role You'll play a key role in building and evolving a high-performance Databricks lakehouse platform, taking ownership from ingestion through to production deployment. Key responsibilities include: Design, build and operate end-to-end data pipelines using … mature CI/CD pipelines for data engineering (testing, deployment, versioning) Develop reusable, production-ready data frameworks and patterns Drive engineering best practice across performance, security, reliability and cost optimisation Lead technical design decisions and influence long-term data platform strategy Mentor other engineers and raise overall data engineering ...

part of a small and highly effective IT team, no two days are the same. You may be investigating complex database issues, optimising SQL performance or developing new functionality one day, and supporting users with application access, system issues or technical queries the next. This variety offers a unique … user support when required. Support user account administration, system access and day-to-day technical queries. Design and implement database improvements to increase performance, efficiency and reliability. Troubleshoot hardware, software and networking issues. Work closely with stakeholders across the business to gather requirements and deliver effective technical solutions. Assist ...