76 to 100 of 343 Performance Tuning Jobs in London

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 ...

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 ...

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 ...

readiness and the identification of technical risks or dependencies.* Use deep data knowledge to guide data modelling, access patterns, data quality, lineage, retention and performance considerations across operational and analytical use cases.* Analyse and query data across relevant platforms to investigate problems, validate assumptions and support decision-making, using … technical leaders, creating clarity on good engineering practice and helping build stronger technical judgement throughout the group.* Investigate complex production issues and systemic performance or reliability concerns, driving root-cause analysis and durable improvements.* Communicate technical strategy, risks, trade-offs and progress clearly to technical and non-technical stakeholders ...

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 ...

readiness and the identification of technical risks or dependencies. Use deep data knowledge to guide data modelling, access patterns, data quality, lineage, retention and performance considerations across operational and analytical use cases. Analyse and query data across relevant platforms to investigate problems, validate assumptions and support decision-making, using … technical leaders, creating clarity on good engineering practice and helping build stronger technical judgement throughout the group. Investigate complex production issues and systemic performance or reliability concerns, driving root-cause analysis and durable improvements. Communicate technical strategy, risks, trade-offs and progress clearly to technical and non-technical stakeholders ...

readiness and the identification of technical risks or dependencies. Use deep data knowledge to guide data modelling, access patterns, data quality, lineage, retention and performance considerations across operational and analytical use cases. Analyse and query data across relevant platforms to investigate problems, validate assumptions and support decision‐making, using … technical leaders, creating clarity on good engineering practice and helping build stronger technical judgement throughout the group. Investigate complex production issues and systemic performance or reliability concerns, driving root‐cause analysis and durable improvements. Communicate technical strategy, risks, trade‐offs and progress clearly to technical and non‐technical stakeholders ...

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 ...

maintain CI/CD pipelines using GitHub Actions, enabling teams to ship safely and frequently. Operate and tune production RDS/Aurora databases, including performance, backups, migrations, partitioning, and scaling strategies. Support ML Ops needs: help productionise machine learning workloads and ensure the ML infrastructure is reliable, observable … Terraform — this is a must‐have, not a nice‐to‐have. Solid experience with database operations , ideally PostgreSQL in AWS RDS/Aurora , including performance tuning, migrations, backups, and scaling large or high‐throughput databases. Practical experience with CI/CD pipelines , specifically GitHub Actions . A strong ...

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 ...

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 ...

CSPM, ITSM, DevOps tooling (CI/CD), and secrets management.* Be responsible for the operational model: backup/recovery, DR, platform upgrades, policy hardening, performance tuning, and continuous improvement.* Drive onboarding at scale ensuring standardized onboarding patterns and controls.* Establish guardrails and RBAC/ABAC models aligned ...

across on‐premises and AWS environments Supporting large-scale deployments of PostgreSQL, Microsoft SQL Server, MySQL and CockroachDB, ensuring high availability, disaster recovery and performance Contributing to the design and implementation of automation for database provisioning, upgrades, replication and monitoring using Python, Ansible and Terraform Driving improvements in performance tuning, query optimisation, indexing strategies and storage design Collaborating with application and research teams to design and deliver database solutions that meet demanding scalability and latency requirements Participating in the out-of-hours rota to provide support for critical systems Staying up to date with industry trends ...

maintain, and enhance CI/CD pipelines enabling automated testing, seamless deployments, and continuous integration. Diagnose and resolve complex system‐level issues related to performance, scalability, networking, and automation. Collaborate with cross‐functional teams to deliver cloud‐native solutions aligned with engineering best practices and business goals. Required Skills … Kubernetes services such as CoreDNS , cert‐manager , Dynatrace , Cloudability , and Infoblox . Familiarity with OPA Gatekeeper for policy enforcement and tenant isolation. Security, Observability & Performance Strong security mindset with a proven track record of designing secure, resilient cloud‐native systems. Experience implementing observability stacks including Prometheus , Dynatrace , and OpenTelemetry ...

Project description We are seeking an experienced Senior KDB+ Developer to design, develop and optimize high performance data platforms built on kdb+. The ideal candidate will have deep expertise in kdb+ tick architecture, performance tuning at scale and close collaboration with business stakeholder - particularly within Risk functions … deliver robust, efficient and maintainable solutions. Responsibilities Design, develop and maintain kdb+ tick systems with strong understanding of data organization, schema design and the performance implications of different architectural approaches. Build and operate solutions handling large scale, high frequency datasets, ensuring low latency, high throughput and efficient memory usage. ...

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 ...

optimising mission‐critical trading services across multiple asset classes. Role Responsibilities Design and implement distributed, fault‐tolerant Java services for electronic trading environments Lead performance tuning, optimisation, and refactoring of low‐latency trading components Investigate and resolve production issues, ensuring system stability and high availability Collaborate with global … DevOps, and Product Mentor and guide engineers to improve technical capability and engineering standards Experience/Competences Essential Strong experience designing and building high‐performance, low‐latency Java services within electronic trading Strong experience with distributed messaging technologies (Solace/Kafka) and real‐time systems Strong experience designing ...

decisions and the outcomes delivered. Strong system design and engineering judgement, with experience making practical trade-offs around architecture, data models, reliability, scalability or performance, and diagnosing difficult production problems. Strong communication and collaboration skills, with the ability to turn loosely defined problems into practical solutions and drive delivery … such as GitHub Actions. Depth in distributed or event-driven systems, asynchronous processing, or data-intensive and high-throughput applications. Experience with observability and performance tuning, including tools such as Prometheus, Grafana, ELK or Datadog, or optimising CPU-, GPU- or distributed ML workloads. Experience in startups, scaleups ...

resilience, and recovery of critical database platforms. The successful candidate will be a hands-on technical expert, actively involved in architecture decisions, database design, performance tuning, data reconciliation, and operational support. Key Requirements: Active SC Clearance held by a Government agency used within the last 6 months. Lead … PostgreSQL. Design scalable, resilient and highly available database platforms, including schema design, data modelling, indexing, replication and disaster recovery strategies. Drive database performance optimisation through SQL development, query tuning, execution plan analysis and configuration improvements. Manage database operations including upgrades, patching, security, monitoring, capacity planning, backup and recovery ...

3.x and/or SAS Viya 4, ideally supporting migration or transformation projects. Expertise in data migration, data transformation, validation, data quality management and performance tuning within large-scale environments. Strong hands-on skills with SQL, Python and scripting for data processing and automation. Experience developing automated data ...

3.x and/or SAS Viya 4, ideally supporting migration or transformation projects. Expertise in data migration, data transformation, validation, data quality management and performance tuning within large-scale environments. Strong hands-on skills with SQL, Python and scripting for data processing and automation. Experience developing automated data ...

Strong proficiency in Python, Go, and/or Bash; ability to write maintainable, production-quality code. GNU/Linux: Deep system-level understanding, including performance tuning and hardening. Windows Server: Proficiency in Windows Server 2016+ including ADFS, ADCS, and ADDS. Networking: Strong understanding of IP networking, physical network ...

recovery and performanceContributing to the design and implementation of automation for database provisioning, upgrades, replication and monitoring using Python, Ansible and TerraformDriving improvements in performance tuning, query optimisation, indexing strategies and storage designCollaborating with application and research teams to design and deliver database solutions that meet demanding scalability ...