51 to 75 of 336 Performance Tuning Jobs in London

with stakeholders across Front Office, Risk, Product Control, and Finance to deliver timely, consistent, high-quality analytics. You will help strengthen reliability, governance, and performance across enterprise data platforms, including Databricks and Amazon Redshift. As a Senior Lead Software Engineer at JPMorgan Chase in the Risk Central team … operational excellence. Design and build robust batch and streaming pipelines using distributed compute for high-volume workloads. Implement efficient data modeling, partitioning, and performance tuning strategies for large datasets. Build reusable frameworks and components to accelerate onboarding of new datasets and analytics use cases. Engineer data products ...

graph platforms/database engineering)Role OverviewWe are seeking a Neo4j Platform Engineer to build and manage the Neo4j infrastructure layer, ensuring high availability, performance, and secure access to enterprise knowledge graphs. This role is responsible for cluster configuration, performance tuning, and access control, enabling scalable … backup, restore, and disaster recovery processesPerformance OptimizationTune and optimize Cypher queries for production workloadsOptimize graph traversal patterns for Graph RAG use casesIdentify and resolve performance bottlenecks in large-scale graph environmentsBenchmarking & ScalabilityDesign and execute query performance benchmarks at scaleMonitor system performance and ensure high throughput ...

multiple product lifecycle environments, from development to mission-critical production systems.• Configure and maintain database servers and processes, including monitoring of system health and performance, to ensure high levels of performance, availability, and security.• Database performance tuning.• Planning, deploying, maintaining, troubleshooting of high-availability database environments (RAC. … Qualifications• 8+ years on Oracle 12.x/Above versions in database administration, in an enterprise environment with multiple database servers is required. • Experience with Performance Tuning and Optimization (PTO), using native monitoring and troubleshooting tools• Experience with backups, restores and recovery models• Experience with database administration• Experience with ...

ability to lead multiple projects simultaneously, delivering to deadlines Expert-level experience with MSSQL, Oracle and Sybase database environments, including complex query-writing and performance tuning A natural leader who relishes the prospect of supporting an expanding business and driving continuous improvement in support functions Motivated self-starter … scope for growth. And connections act as a catalyst. Sparking richer solutions for our clients to break new ground, modernising markets for future performance, and creating dynamic careers for our people. Our capacity to connect builds trust, supports communities and gives us the power to anticipate and respond ...

ability to lead multiple projects simultaneously, delivering to deadlines* Expert-level experience with MSSQL, Oracle and Sybase database environments, including complex query-writing and performance tuning* A natural leader who relishes the prospect of supporting an expanding business and driving continuous improvement in support functions* Motivated self-starter ...

growing financial technology business is looking for a Senior Database Developer to join its London technology team and take significant ownership of the design, performance and evolution of its core data platform. This is a hands‐on senior position for someone who has developed deep SQL Server expertise … enterprise‐scale SQL Server solutions Taking ownership of schema design, data modelling and data architecture Optimising complex queries, execution plans, indexes and overall database performance Diagnosing production database issues and conducting root‐cause analysis Developing and maintaining data pipelines using dbt Supporting existing SSIS/SSRS solutions Managing database ...

data collection, deep market expertise, and continuously evolving methodologies. Its data and technology underpin how investors raise capital, evaluate opportunities, monitor portfolios, and assess performance at scale. About Company Intelligence Company Intelligence is a data business it ownss private company data platform, providing structured, auditable company-level data … analytics across the private markets investment lifecycle. It integrates company, deal, and ownership data with fund, manager, and performance information to deliver a connected view of private capital activity. Built on granular data and robust methodologies, Company Intelligence supports scalable analysis across deal sourcing, due diligence, valuation benchmarking ...

operational decision‐making. You will drive the development of data pipelines, models, and architecture across our modern data stack (AWS, Snowflake, dbt) ensuring performance, reliability, and scalability. Working closely with Architecture, Data Analytics, and Salesforce teams, you will drive the evolution of our data platform, guide best practices … models and frameworks to ensure high data quality, consistency, and maintainability. Own data pipeline reliability, proactively monitoring, troubleshooting, and resolving complex data and performance issues with minimal disruption. Architect and evolve analytics‐ready data models (e.g., star schemas, data marts), balancing performance, flexibility, and usability. Collaborate with senior ...

services and will play a critical part in our migration to Microsoft Azure. You will provide deep technical expertise across database operations, migration planning, performance tuning, security and service improvement. Working closely with Technology colleagues, project teams, suppliers and business stakeholders, you will ensure our database platforms … dependency planning. Manage day to day operational support for Microsoft SQL Server and related Azure data services. Monitor, tune and continuously improve database performance, availability, capacity and resilience. Troubleshoot and resolve database integrity, performance, replication, connectivity and security issues. Respond to alerts, failed jobs and incidents, ensuring timely ...

United Kingdom (GB).Key Responsibilities Design, optimize, and maintain scalable Databricks pipelines (ETL, streaming, ML workflows). Perform cluster and job performance tuning: optimize cluster sizing, caching, partitioning, and shuffle management. Monitor Spark job metrics, analyze logs, and identify bottlenecks in data throughput or latency. Implement cost-optimization … autoscaling and job consolidation. Ensure efficient scheduling and orchestration of jobs using Databricks Workflows Collaborate with data scientists and platform teams to improve query performance on Delta Lake. Develop automated monitoring and alerting mechanisms using Databricks REST APIs, Prometheus, or Azure Monitor. Maintain best practices for data engineering performance ...

Server and SAP Business One backend tables Database Management : Write optimized SQL queries, stored procedures, and indexing strategies to efficiently handle large datasets Performance Optimization : Monitor and enhance API performance, database query execution, and application scalability Documentation : Maintain clear and detailed documentation for APIs, database structures … Code Quality : Conduct code reviews, debugging, and error handling to maintain system reliability Best Practices : Stay up to date with API design standards, database performance tuning, and cloud integration trends What You’ll Need 5+ years of backend development experience Strong .NET and C# skills for API development ...

will work with complex enterprise data, mission‐critical processes and high‐impact decisions, using AI, data and engineering to reshape how organisations plan, control performance and allocate resources. The opportunity goes beyond building technically strong solutions: you will see how those solutions influence cash, profitability, risk and business growth … tokenisation, retention, tenant isolation and audit logging. Apply software and DataOps practices including Git, automated testing, CI/CD, infrastructure as code where relevant, performance tuning, cost optimisation and production support. Collaborate with finance SMEs, data owners, architects and governance teams to agree definitions, resolve data issues ...

ensuring alignment to customer business objectives. . Snowflake Architecture: Design and optimise Snowflake environments, including data sharing, secure data access, data warehouse design, performance tuning, governance, and cost optimisation. Databricks Architecture: Design and implement Databricks lakehouse architectures, supporting large-scale data engineering, streaming, analytics, AI, and machine learning … strategic asset and enabling data-driven decision making. Ability to mentor engineers and architects while contributing to technical leadership within delivery teams. Experience balancing performance, security, scalability, and cost optimisation within cloud data platforms. #J-18808-Ljbffr ...

leading or mentoring teams of engineers to deliver high-quality scalable data solutions. Technical Expertise: Deep expertise with Snowflake features (warehouses, Snowpark, data sharing, performance tuning).Proficiency in ETL/ELT tools such as DBT, Matillion, Talend, or equivalent. Strong SQL and Python (or equivalent language) skills ...

Database Administrator to support and enhance enterprise database platforms and Oracle APEX application environments. This role will be responsible for the design, administration, performance optimization, and lifecycle management of Oracle databases and APEX/ORDS platforms supporting critical business applications.The successful candidate will work closely with DBA, middleware … application teams to ensure high availability, performance, and security of systems across development, QA, and production environments.Key ResponsibilitiesOracle Database AdministrationManage and maintain Oracle databases (19c and newer) across multiple environmentsPerform database installations, upgrades, patching, and migrationsImplement backup/recovery strategies and disaster recovery solutionsMonitor database performance and tune ...

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 ...

responsibilitiesDesign scalable, reusable data processing and data quality frameworks using Python, PySpark, and dbtBuild and optimize batch and streaming data pipelines with strong performance, fault tolerance, and observabilityDevelop and operate workflow orchestration (e.g., Apache Airflow) to schedule, monitor, and manage data movement and transformationsModel and transform data for analytics … using SQL and dbt to support business intelligence and reporting workloadsWrite production-grade Python/PySpark code with disciplined testing, performance tuning, and maintainable object-oriented designImplement infrastructure-as-code (e.g., Terraform) to provision and manage cloud-based data platform componentsContainerize and deploy services using Docker and Kubernetes ...

stack (Data Factory, Synapse/Fabric, SQL‐based semantic layers). Advanced Power BI: data modelling (star schemas), advanced DAX, Power Query/M, performance tuning, RLS, and deployment via pipelines. Understanding of Power BI engineering discipline: PBIP/TMDL source format, Git‐based version control, pull‐request … experience of these practices in a team. Proven ability to carry out peer review and QA of analytics work – spotting model errors, DAX issues, performance problems and UX weaknesses, and giving constructive feedback. Excellent written and verbal communication skills, including presenting to underwriting and internal stakeholders. Strong stakeholder engagement ...

looking for an experienced Senior Database Administrator with extensive Microsoft SQL Server experience and strong knowledge of Azure, database performance, security, automation and DevOps . You will lead the ongoing management, optimisation and modernisation of the database estate, supporting migration, upgrades, resilience and technical debt reduction while working closely … support the Microsoft SQL Server estate and related Azure data services. Lead database upgrades, migrations, optimisation and decommissioning activity. Monitor, tune and improve database performance, availability, capacity and resilience . Troubleshoot integrity, performance, blocking, deadlocking, replication, connectivity and security issues. Manage backup, restore, patching, maintenance and disaster recovery ...

collaborate closely with stakeholders including Ratings, Business, and Operation teams to deliver scalable data infrastructure, APIs, and services with a focus on reliability, performance, data integrity, and innovation—including the integration of AI/ML capabilities to enhance data solutions and developer productivityHow You'll Make an Impact: Lead … high-quality software delivery through automated testing, code reviews, observability, and engineering governance. Lead resolution of complex technical and operational challenges while improving platform performance, resiliency, and operational excellence. Champion DevSecOps, CI/CD, and automation practices to accelerate delivery and improve engineering efficiency. Evaluate and adopt emerging technologies ...

access controls, row‐level security, dynamic data masking, and PII governance in line with regulatory requirements (GDPR, BCBS 239) Champion Snowflake best practices for performance tuning, clustering keys, materialised views, and query optimisation Evaluate Snowflake‐native capabilities (Snowpark, Cortex AI, Dynamic Tables) and recommend adoption where they accelerate … Formation, IAM, VPC Data Governance Data lineage, cataloguing (Apache Atlas/Collibra/Snowflake Horizon), GDPR, BCBS 239, MDM AI/ML Data Query & Performance SQL optimisation, clustering keys, partitioning, query profiling, cost‐based tuning Data Landscape The Data Architect will work across the following technology landscape. Candidates ...

translate requirements into scalable technical solutions and reusable datasets that deliver measurable business value. Continuous Improvement & Strategic Contribution: Identify opportunities to improve platform performance, scalability and cost efficiency, while contributing to engineering standards, roadmap initiatives and the long-term growth of Primark's Data & Analytics capabilities. What … Engineering Best Practices: Experience withdbtCloud ordbtCore, including model development, testing, documentation, lineage, deployment workflows, CI/CD and version control practices. Data Quality, Performance &Optimisation: Strong understanding of data quality, observability, operational monitoring and performance tuning, with a focus on delivering reliable, scalable and cost-efficient data ...

Capital on Tap is seeking a Database Performance Engineer to own performance and scale of our SQL Server estate on Azure. You will join a small, senior, hands‐on team of DBAs and SREs to optimize latency, cost and reliability. You'll own performance tuning ...

Ansible , along with strong communication and stakeholder skills Experience with cloud database technologies such as MongoDB, Cosmos DB, SQL PaaS services including optimisation, performance tuning and high availability Strong networking knowledge across VNet design, firewalls, routing, private endpoints, WAFs and network security groups Understanding of compliance and regulatory ...

leading or mentoring teams of engineers to deliver high-quality scalable data solutions. Technical Expertise Deep expertise with Snowflake features (warehouses, Snowpark, data sharing, performance tuning). Proficiency in ETL/ELT tools such as DBT, Matillion, Talend, or equivalent. Strong SQL and Python (or equivalent language) skills ...