1 to 25 of 307 Performance Tuning Jobs in London

Senior Database Administrator Leading Financial

Hiring Organisation
Stream Search Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£95,000
ownership of a diverse database estate supporting critical trading and operational systems within a leading financial exchange technology environment. Youll be responsible for database performance, availability, security, upgrades, backups, recovery and migrations , while working closely with developers and infrastructure teams. Key Responsibilities Own and manage the database environment. Ensure … high availability, performance, reliability and security. Performance tuning, monitoring and troubleshooting. Manage upgrades, patching, backups and recovery. Support schema design, SQL optimisation and integrations. Manage database access, permissions and compliance. Act as the escalation point for database issues. Build and optimise SQL queries for Grafana and reporting. ...

Senior Performance Support Specialist

Hiring Organisation
Unit4
Location
Greater London, United Kingdom
Employment Type
Full Time
people by providing them with the right tools to achieve the autonomy they need - it's what makes us unique Key Tasks and Responsibilities Performance tuning of Unit4 Financials by Coda Pre and Post Go Live. Troubleshoot performance issues across new implementations (Project) and existing implementations … Unit4 Financials by Coda, this includes Technical and Application aspects. Develop enhanced, proactive monitoring, detection and remediation of performance issues. Develop proactive, continuous performance tuning and processes to maintain optimal performance levels. Comply with the Company's information security requirements and all Company business procedures ...

Lead Oracle Database Administrator

Location
Greater London, England, United Kingdom
Unix/Linux . Manage backup and recovery using RMAN and monitoring through Oracle Enterprise Manager (OEM) . Investigate complex database incidents and performance issues. Ensure database environments remain secure, stable and resilient. Oracle E-Business Suite Provide expert DBA support for Oracle E-Business Suite R12 . Support … upgrades, migrations, patching and technical changes. Work with EBS Concurrent Managers and troubleshoot performance and operational issues. Support complex legacy ERP environments and their application, database and middleware dependencies. SQL & Performance Tuning Perform advanced Oracle SQL and PL/SQL tuning . Analyse execution plans, indexes ...

DB2 Database Administrator (DBA)

Location
Greater London, England, United Kingdom
resolution of database-related incidents and problems. Demonstrate strong analytical and problem-management capabilities to resolve complex technical issues. Provide consulting services on database performance monitoring, tuning, capacity planning, and optimization. Coordinate with development teams during project implementations and release cycles. Participate in infrastructure modernization, technical initiatives … Required Qualifications Typically 8-12 years Hands‐on experience in IBM z/Mainframe environments with strong expertise in DB2 Database Administration, database support, performance tuning, security implementation, automation, disaster recovery, and production support. Deep understanding of Db2 database architecture, administration, backup and recovery procedures. Experience in production ...

ServiceNow GRC Architect

Location
Greater London, England, United Kingdom
integrations, and innovative customizations. Technical Advisory & Governance Act as a subject matter expert and trusted advisor to clients and internal teams on platform capabilities, performance, scalability, and security. Establish governance frameworks to ensure technical consistency, integrity, and adherence to platform best practices. Requirements Analysis & Solution Design Collaborate with business … SOAP, JDBC, and MID Server technologies. Technical Oversight & Quality Assurance Provide technical direction to development teams, ensuring compliance with design patterns, coding standards, and performance guidelines. Conduct code reviews, ensure solution quality, and oversee technical delivery milestones. Prototyping & Demonstrations Lead the creation of technical prototypes and conduct platform demonstrations ...

LEAD ADMINISTRATOR L1(CONTRACT)

Location
Greater London, England, United Kingdom
implement, and maintain Sybase ASE & Sybase IQ database instances, including installation, configuration, upgrades, and patching across Linux/Unix platforms. Perform Sybase & IQ database performance tuning, query optimization, index management, and capacity planning to ensure optimal throughput and minimal downtime. Perform routine Sybase database maintenance activities like housekeeping … restore strategies using dump/load, replication, or backup server. Maintain large-scale IQ databases with terabyte-level storage and ensure optimal bulk loading performance using BCP, IQ load utilities, or ETL tools. Configure and support high-availability solutions such as Sybase Replication Server, Warm Standby, MSA, Failover Clustering ...

Database Engineer

Hiring Organisation
Talent-Relay Limited
Location
South West London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£62,614
position . Youll work across Oracle, PostgreSQL and NoSQL platforms , helping build, automate and optimise highly available enterprise database environments. If you enjoy automation, performance tuning, modern DevOps and solving complex database challenges , this role offers the opportunity to work at significant enterprise scale. Key Responsibilities: Engineer … Cassandra, MongoDB and/or Couchbase . Automate database provisioning, configuration and deployments. Implement Infrastructure as Code and CI/CD practices. Optimise database performance, queries and indexing. Support high availability, replication and resilience. Troubleshoot complex production issues and perform root-cause analysis. Partner with developers, architects and infrastructure ...

Lead Data Engineer

Location
Greater London, England, United Kingdom
Design scalable, reusable data processing and data quality frameworks using Python, PySpark, and dbt Build and optimize batch and streaming data pipelines with strong performance, fault tolerance, and observability Develop and operate workflow orchestration (e.g., Apache Airflow) to schedule, monitor, and manage data movement and transformations Model and transform … data for analytics using SQL and dbt to support business intelligence and reporting workloads Write production-grade Python/PySpark code with disciplined testing, performance tuning, and maintainable object-oriented design Implement infrastructure-as-code (e.g., Terraform) to provision and manage cloud-based data platform components Containerize ...

Principal Engineer (AWS & Java)

Hiring Organisation
London Stock Exchange Group
Location
London, UK
Employment Type
Full-time
guide effective development approaches by the engineering teams. Lead the implementation of the most complex and business‐critical changes, setting the standard for quality, performance, and maintainability. Provide hands‐on expertise in Java‐based systems, including concurrency, performance tuning, memory management, and API design. Non‐Functional Ownership … capacity management, ensuring the platform performs predictably under variable and peak loads. Provide deep expertise in working with large databases and data stores, including performance optimisation, data access patterns, and operational scaling. Problem Solving & Technical Decision SupportSolve the most complex and ambiguous technical problems, particularly those spanning multiple components ...

Senior ETF Engineer, Investment Technology

Hiring Organisation
Invesco
Location
London, UK
Employment Type
Full-time
processes across Equities, Fixed Income, and Alternatives. This role will partner closely with portfolio managers, quantitative researchers, and business teams to deliver scalable, high-performance solutions that support both technology-owned platforms and business-driven workflows (e.g., co-developed tools such as dashboards and portfolio management utilities). … services, APIs, and microservices supporting portfolio analytics, optimization workflows, and data pipelinesDesign and optimize SQL-based data processing (PostgreSQL, SQL Server), including complex queries, performance tuning, and large-scale ETL workflows. Implement and support distributed, event-driven architectures (e.g., Kafka, asynchronous workflows) for scalable platform execution. Develop ...

Oracle Database Engineer - up to £90,000 + Bonus - Hybrid

Location
City Of London, England, United Kingdom
hire an experienced Oracle Database Engineer for their database and platform engineering team. This is a hands-on position covering Oracle administration, automation and performance engineering across large-scale Exadata and cloud environments, including Autonomous Exadata Cloud@Customer. The Oracle Database Engineer role suits an Oracle professional who wants … move beyond routine administration into platform engineering: building automation that removes manual overhead, tuning at scale, and owning multi-tenant database architecture across mission-critical systems. About the role - Oracle Database Engineer (Oracle DBA): Build automation tooling and platform solutions using Ansible and scripting to reduce manual work across ...

Oracle Database Engineer - up to £90,000 + Bonus - Hybrid

Hiring Organisation
Involved Solutions
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £90,000 per annum
hire an experienced Oracle Database Engineer for their database and platform engineering team. This is a hands-on position covering Oracle administration, automation and performance engineering across large-scale Exadata and cloud environments, including Autonomous Exadata Cloud@Customer. The Oracle Database Engineer role suits an Oracle professional who wants … move beyond routine administration into platform engineering: building automation that removes manual overhead, tuning at scale, and owning multi-tenant database architecture across mission-critical systems. About the role - Oracle Database Engineer (Oracle DBA): Build automation tooling and platform solutions using Ansible and scripting to reduce manual work across ...

Senior Data Engineer

Location
Greater London, England, United Kingdom
using Azure Data Factory and Databricks,replacing legacy SSIS pipelines. Identifying opportunities toharden and automate manual steps within the Finance Close workflow ConductT-SQL performance tuning across on-prem and cloud environments.ConductT-SQL performance tuning across on-prem and cloud environments. Collaboratewith IT and business stakeholders ...

Principal Java Developer

Location
Greater London, England, United Kingdom
based in the UK or US and offers the opportunity to build scalable, real‐time services using modern technologies. If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities … with DevOps, Product, and QA teams to ensure production‐grade solutions. Drive architectural changes, advocate for best practices, and provide mentorship to peers. Drive performance tuning, fault tolerance, and observability improvements across services. Required Skills & Experience: 10+ years of experience in Java development with a focus on performance ...

Principal Java Engineer

Location
Greater London, England, United Kingdom
role is based in the UK and offers the opportunity to build scalable, real-time services using modern technologies. If you're passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities … with DevOps, Product, and QA teams to ensure production-grade solutions. Drive architectural changes, advocate for best practices, and provide mentorship to peers. Drive performance tuning, fault tolerance, and observability improvements across services. Required Skills & Experience: 10+ years of experience in Java development with a focus on performance ...

GPU Systems Engineer

Hiring Organisation
Hudson River Trading
Location
London, UK
Employment Type
Full-time
clusters in globally distributed data centers. As such, this is a high-impact role with broad scope, from HPC/AI cluster design and performance tuning, to troubleshooting and automation for thousands of nodes. ResponsibilitiesDesign, build, and optimize large-scale distributed GPU compute clustersIdentify and resolve GPU workloads … performance bottlenecks across compute, storage, and networking layersCollaborate with research and development teams to profile, benchmark, and fine-tune GPU-based workloadsAutomate system deployment, monitoring, and troubleshooting across thousands of nodesCollaborate with research, and engineering teams to support evolving workloadsOwn critical infrastructure projects — from concept to implementation and supportTest ...

Senior Lead Oracle Fusion Cloud Integration & Extension Consultant role

Hiring Organisation
Version 1
Location
London, UK
Employment Type
Full-time
transformations Implement robust error handling, replay, recovery and operational support patterns covering technical failures, business validation failures, rejected records and downstream availability issues. Support performance tuning for high-volume integrations, including batching, pagination, payload optimisation, parallel processing and appropriate use of asynchronous patterns. Implement secure integration patterns using … technical and business error-handling frameworks, including logging, notification, retry, replay and reconciliation support. Experience supporting high-volume or business-critical integration processing, including performance tuning and operational support considerations. Ability to produce clear technical design documents, mapping specifications, test evidence, deployment instructions and support handover material. Experience ...

Principal Engineer

Location
Greater London, England, United Kingdom
production-grade Lakehouse implementations using technologies such as Unity Catalog, Delta Live Tables, MLflow and Lakeflow. Own the hardest technical problems on an engagement - performance tuning, complex migrations, scale and reliability. Set engineering standards for code quality, testing, observability and reusability across delivery teams. Build reusable frameworks, accelerators … experience delivering enterprise data platforms or analytics solutions. Strong commercial experience building and delivering Databricks solutions in production. Deep expertise in Apache Spark, including performance tuning and optimisation at scale. Expert-level Python and SQL, with a track record of writing production-quality, well-tested code. Strong understanding ...

Chief Architect - Data Engineering (Databricks Practice)

Location
Greater London, England, United Kingdom
prem estates) and cloud transformation projects to Databricks on Azure/AWS/GCP, including assessment, wave planning, and cutover. Stay hands-on: performance tuning, debugging, code and design reviews, and setting engineering standards for the team. Presales & Stakeholder Management Own and defend enterprise solution designs in front … data engineering/architecture, 3+ on Databricks at enterprise scale, and still happiest when hands are on the keyboard. Deep Spark expertise — architecture, performance tuning, streaming, debugging, the advanced stuff that separates architects from diagram-drawers. Lakehouse fluency — Medallion architecture, Delta Lake, Unity Catalog, governance, orchestration (Workflows ...

Database/Data Engineer

Hiring Organisation
Salt Search
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£230.00 per day
configure database environments across development through to production Automate database provisioning, configuration and deployments Integrate database changes into CI/CD pipelines Support performance tuning, query optimisation and complex troubleshooting Engineer for high availability, resilience, security and recovery Support database migrations, upgrades and modernisation initiatives Work closely with … Looking For Strong hands-on Oracle and PostgreSQL experience Experience with at least one of Cassandra, MongoDB or Couchbase Strong database engineering, performance tuning and troubleshooting skills Automation experience using Terraform, Ansible, Python and/or Shell Experience with Infrastructure as Code, CI/CD and Git Experience ...

Java Software Engineer

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Permanent
Salary
£80,000
understand requirements and resolve issues Creating and maintaining low-level technical designs and documentation Supporting CI/CD and software delivery activities Debugging, performance tuning and improving application reliability Participating in Agile ceremonies and sprint activities Contributing to digital transformation and wider engineering projects What we're looking … experience with: Java and associated technologies Spring Boot Unit testing, test automation and TDD DevOps tooling and CI/CD Debugging, profiling and performance tuning Agile software delivery Experience with Docker or other container technologies would also be beneficial. We are looking for someone with strong problem-solving ...

Research Scientist, Robotics Pre-Training and Data Quality, DeepMind

Location
Greater London, England, United Kingdom
sources, and training and inference techniques for generative multimodal models, especially for robotics applications (e.g., VLAs, WAMs). Experience optimizing models and systems (e.g., performance tuning, experimentation, and debugging). Minimum qualifications PhD in a technical field or equivalent practical experience. Experience with algorithmic architectures, data sources … training and inference techniques for generative multimodal models, especially for robotics applications (e.g., VLAs, WAMs). Experience optimizing models and systems (e.g., performance tuning, experimentation, and debugging). Preferred qualifications Practical experience in "hill-climbing" model performance (e.g., iteratively improving training recipes and model benchmarks). Experience ...

SAP ABAP S/4 Hana Architect - UK

Hiring Organisation
Infosys Technologies
Location
London, UK
Employment Type
Full-time
etc. and SOAP . Expertise in Adobe form development(both Classical, Fragment based) with Java scripting knowledge Expert in Fiori related troubleshooting, AIF, Performance tunning Techno Functional expertise in SAP Concur, Accounts Payable/Receivables, Billing and Invoicing Hands on experience with good knowledge of S/4 HANA … Fiori Apps Strong knowledge in the ABAP runtime analysis tool (SE30), SQL Trace (ST05), System dump analysis (ST22) to analyse and improve runtime performance, performance tuning, troubleshooting, problem resolution and capacity planning. Preferred Experience in Life science domain. Previous experience for working in Pharmaceutical vertical Multilingual proficiency ...

SAP ABAP EWM S/4 Hana Architect - UK

Hiring Organisation
Infosys Technologies
Location
London, UK
Employment Type
Full-time
Fiori Apps Strong knowledge in the ABAP runtime analysis tool (SE30), SQL Trace (ST05), System dump analysis (ST22) to analyse and improve runtime performance, performance tuning, troubleshooting, problem resolution and capacity planning. Preferred Experience in Life science domain. SAP S/4 EWM technical knowhow – high level … powered core that helps prioritize the execution of change. We also empower the business with agile digital at scale to deliver unprecedented levels of performance and customer delight. Our always-on learning agenda drives their continuous improvement through building and transferring digital skills, expertise, and ideas from our innovation ...

MySQL DBA - Fintech

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Must Ideally Have:·MySQL and MariaDB on Linux·InnoDB·Database installations, backups, restores, replication·Scripting languages – Python and Bash·Stored procedures, SQL tuning·Performance Tuning·Capacity planning·Transaction processingYou will be joining a progressive and exciting company committed to excellence. They offer an excellent working environment with ...