1 to 25 of 258 Performance Tuning Jobs in London

Senior Database Engineer - Postgres

Location
Greater London, England, United Kingdom
will be responsible for implementation, support and maintenance of mission critical database environments. The administration of these environments includes clustering, storage, securing, monitoring, performance tuning, troubleshooting, and disaster recovery. This person will help manage and support current and future database and storage environments and initiatives, and proactively evaluate … with the dynamic and growing business needs of DRW. Responsibilities: Proactively manage and optimize various database platforms and related OS environments Perform database performance and query tuning Implement and maintain production and non-production databases Perform database backups, restores, log shipping, mirroring and replication, etc. Work with system ...

SQL Server DBA/Engineer

Location
City Of London, England, United Kingdom
Hybrid - 1-2 days per week on site The SQL DBA Engineer is responsible for designing, managing, and optimizing SQL database environments to ensure performance, availability, scalability, and security across business-critical systems. The role combines database architecture, administration, performance tuning, governance, backup and recovery planning … infrastructure teams. Key Responsibilities Design and maintain SQL database architecture aligned to business and application requirements Administer, monitor, and optimize SQL database environments for performance, reliability, and scalability Lead database installation, configuration, patching, upgrades, and migration activities Define and implement backup, recovery, disaster recovery, and high-availability strategies Troubleshoot ...

SQL Server DBA/Engineer

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£541 - £563/day Inside IR35
days per week on site Job Summary The SQL DBA Engineer is responsible for designing, managing, and optimizing SQL database environments to ensure performance, availability, scalability, and security across business-critical systems. The role combines database architecture, administration, performance tuning, governance, backup and recovery planning, and support … infrastructure teams. Key Responsibilities Design and maintain SQL database architecture aligned to business and application requirements Administer, monitor, and optimize SQL database environments for performance, reliability, and scalability Lead database installation, configuration, patching, upgrades, and migration activities Define and implement backup, recovery, disaster recovery, and high-availability strategies Troubleshoot ...

Senior Data Platform Engineer London, England, United Kingdom

Location
Greater London, England, United Kingdom
including APIs, configuration templates, automated provisioning, access requests, pipeline deployment and operational guardrails. Optimize cloud database spend through workload right-sizing, consolidation, scheduling and performance tuning; develop transparent SingleStore cluster, application and team-level cost allocation and showback. Own production readiness and database reliability: monitoring, incident triage, root … experience in data platform engineering, database engineering or closely related production data roles. Advanced SQL and PostgreSQL expertise, including query plans, schema design, performance tuning and operational troubleshooting. Strong Python and practical experience developing production-grade ingestion and transformation pipelines, with testing and observability. Experience with distributed ...

Senior Software Engineer – Ultra Low Latency Risk Engine Developer

Location
Greater London, England, United Kingdom
components that sit directly in the cash equities trading hot path, ensuring pre-trade and real-time risk controls are enforced with microsecond-level performance while maintaining correctness and resiliency at scale. This is a hands‐on, deeply technical role that also carries leadership responsibilities — mentoring engineers, driving architecture … Engine responsible for real-time pre-trade risk checks, position limits, and exposure controls across cash equities electronic execution flows. Architect and optimize high-performance, lock-minimal, multi-threaded components capable of processing risk decisions in the sub-microsecond to low-microsecond range. Integrate risk and position components with ...

Senior Oracle Database Administrator

Location
Greater London, England, United Kingdom
mission-critical on-premises Oracle database environments, with a strong focus on Oracle PeopleSoft applications. The role holder will be responsible for the administration, performance, security, and availability of Oracle databases supporting PeopleSoft Financials.Key Responsibilities:Oracle Database Administration· Patch, update, and maintain Oracle Database environments.· Administer Oracle 19c databases … across development, test, QA, and production environments.· Manage Oracle ASM, Data Guard, RMAN, and related technologies.· Monitor database performance, capacity, and availability.PeopleSoft Administration Support· Support Oracle databases underlying PeopleSoft Financials application.· Support PeopleSoft infrastructure including Application Server, Process Scheduler, WebLogic, Tuxedo, and Integration Broker components.· Lead PeopleTools upgrades ...

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 ...

Performance test lead

Location
City Of London, England, United Kingdom
date technical expertise in the ever-changing and dynamic software world, Synergy Solutions International is now growing their team. Job Description Performance Test Lead Key Skills & Experience Minimum of 5+ years of experience in Performance Engineering and Benchmarking Large Scale systems and applications with skill in modeling … system under load and tuning the end of the technology stack Experience in working with different protocols using performance test tools like JMeter, Loadrunner, and SilkPerformer. Knowledge of API/web services testing tools, such as Postman, SoapUl. Good working experience in monitoring tools (Logic Monitor/ ...

Senior Software Engineer – Ultra Low Latency Risk Engine Developer (VP)

Hiring Organisation
Citigroup
Location
London, England, United Kingdom
components that sit directly in the cash equities trading hot path, ensuring pre-trade and real-time risk controls are enforced with microsecond-level performance while maintaining correctness and resiliency at scale. This is a hands-on, deeply technical role that also carries leadership responsibilities — mentoring engineers, driving architecture … Risk Engine responsible for real-time pre-trade risk checks, position limits, and exposure controls across cash equities electronic execution flows.Architect and optimize high-performance, lock-minimal, multi-threaded components capable of processing risk decisions in the sub-microsecond to low-microsecond range.Integrate risk and position components with Client ...

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 ...

SQL DBA - Kingston - Hybrid - £85,000

Hiring Organisation
Ashdown Group
Location
Kingston Upon Thames, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Salary
£85,000
looking for an experienced Senior SQL Server Database Administrator to take full technical ownership of their SQL Server estate, driving the modernisation, scalability, performance and resilience of our database services across a hybrid cloud environment. This is a hands-on, senior technical role where you will be responsible … database architecture and design, working closely with agile development teams to influence technical decisions, challenge inefficient database code and promote best practices. From advanced performance tuning and disaster recovery to security governance and data lifecycle management, you will ensure our database services meet the highest standards of operational ...

Mainframe Performance SME

Hiring Organisation
McGregor Boyall
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£900.00 - £1,100.00 per day
Mainframe Performance & Scalability SME London (Hybrid) | 6-Month Rolling Contract | Inside IR35 We are supporting a major financial services organisation seeking a highly experienced Mainframe Performance & Scalability SME to undertake a strategic assessment of a large-scale IBM Mainframe environment supporting critical pension administration services. This … senior consulting engagement focused on identifying performance bottlenecks, scalability constraints and future growth risks across IBM Z infrastructure, z/OS, Db2 and CICS environments. You will work closely with architecture, engineering and operations teams to assess current platform performance, analyse capacity trends and provide evidence-based recommendations ...

ETL Developer

Location
Greater London, England, United Kingdom
optimise enterprise data-processing solutions. You will work extensively with Ab Initio graphs, parameter sets and plans , delivering high-quality data transformations and performance improvements within a product-aligned squad. Key Responsibilities Design, develop and maintain Ab Initio graphs and data workflows. Build and manage parameter sets and execution … plans. Diagnose performance issues and optimise batch processing. Support build, run and continuous-improvement activities. Embed quality, security, resilience and observability into solutions. Contribute to incident resolution, root-cause analysis and service improvement. Maintain technical documentation, runbooks and knowledge articles. Participate in Agile ceremonies, CI/CD and automated ...

Associate Data Engineer

Hiring Organisation
National Health Service
Location
London, England, United Kingdom
English that can be understood by all audiences.Experience of having discussions with stakeholders (internal and external) to clarify or define specifications.Experience of database configuration, performance tuning and administration.DesirableExperience in NHS information flows, hospital systems and applications.Significant experience of ETL and data warehouse schemas, and relational database systems.Experience … English that can be understood by all audiences.Experience of having discussions with stakeholders (internal and external) to clarify or define specifications.Experience of database configuration, performance tuning and administration.DesirableExperience in NHS information flows, hospital systems and applications.Significant experience of ETL and data warehouse schemas, and relational database systems.Experience ...

Platform Engineering Specialist - Database Infrastructure

Hiring Organisation
TurleyWay Limited
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
passionate about building and operating highly scalable database platforms? Have you administered and optimised mission-critical PostgreSQL environments in cloud-first organisations, ensuring performance, availability and resilience at scale? Can you demonstrate broad technical knowledge across Platform Engineering, DevOps and Infrastructure, alongside experience with automation and scripting using Python … technology landscape. This is an opportunity to become a technical authority for database infrastructure, helping shape the future of the database platform whilst improving performance, resilience, scalability and operational efficiency. A selection of your key responsibilities will include administering and optimising large-scale PostgreSQL environments, managing connection pooling ...

Senior Java Developer (Low-Latency & JVM Performance)

Location
Greater London, England, United Kingdom
Project description Join a global technology team developing high-performance, low-latency platforms supporting critical trading and real-time processing workflows. The project focuses on building event-driven and reactive Java systems designed to operate at high frequency with demanding latency and throughput requirements.The environment combines advanced JVM performance … engineering, concurrency, networking, and Linux optimization. The team works close to the hardware and operating-system level, optimizing memory utilization, network communication, and application performance to deliver highly efficient and reliable systems. Responsibilities - Design and develop high-performance, low-latency applications using Core Java.- Perform advanced JVM profiling ...

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 ...

Senior SAS Viya Platform Engineer/SAS Administrator

Hiring Organisation
Layer7
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 540 Daily
Viya 4 within an Azure-hosted environment. The successful candidate will provide hands-on SAS platform expertise across installation, configuration, administration, security, monitoring, performance, upgrades, and production support. The role will work closely with DevOps Engineers, Cloud Architects, security teams, and analytical users to ensure the SAS Viya platform … integrating SAS Viya with enterprise identity and security services where required. Perform platform health checks, monitoring, incident investigation, troubleshooting, and root-cause analysis. Support performance tuning, resilience, availability, capacity management, backup and recovery activities. Manage SAS Viya configuration changes, maintenance activities, patches, updates, and upgrades. Support integration ...

Senior SAS Viya Platform Engineer / SAS Administrator

Location
London Borough of Barking and Dagenham, England, United Kingdom
Viya 4 within an Azure-hosted environment. The successful candidate will provide hands-on SAS platform expertise across installation, configuration, administration, security, monitoring, performance, upgrades, and production support. The role will work closely with DevOps Engineers, Cloud Architects, security teams, and analytical users to ensure the SAS Viya platform … integrating SAS Viya with enterprise identity and security services where required. Perform platform health checks, monitoring, incident investigation, troubleshooting, and root-cause analysis. Support performance tuning, resilience, availability, capacity management, backup and recovery activities. Manage SAS Viya configuration changes, maintenance activities, patches, updates, and upgrades. Support integration ...

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 ...

Principal Database Administrator Fully Remote

Hiring Organisation
Interact Consulting Limited
Location
South West London, South East, United Kingdom
Employment Type
Permanent Contract, Remote
market-leading SaaS platform 24x7. This is a true player-coach role: you'll set the long-term database strategy and standards, improve reliability, performance, and security across the estate, and line-manage and develop our existing DBA team. You'll be the senior technical authority for database architecture … strategy, standards, and roadmap for the database function across SQL Server, Azure SQL, and Cosmos DB. Get hands-on with a live production estate: performance tuning, configuration, backups, restores, disaster recovery, incident response, and release support. Right-size and optimise Azure SQL deployments across General Purpose, Business Critical ...

Market Data Engineer, Parameta Solutions

Location
City Of London, England, United Kingdom
supporting the infrastructure and services that underpin our market data capabilities. This is a hands-on engineering role with a strong focus on availability, performance, automation and continuous improvement. You will have the opportunity to solve complex technical challenges, enhance the scalability and resilience of our market data estate … technical planning for platform upgrades, lifecycle management, maintenance and production deployments. Develop automation for data ingestion, processing, monitoring and operational workflows. Support capacity planning, performance tuning and infrastructure improvements. Partner with technology teams, business stakeholders, exchanges and vendors to deliver effective market data solutions. Support compliance with relevant ...

Market Data Engineer, Parameta Solutions

Location
Greater London, England, United Kingdom
providers, supporting the infrastructure and services that underpin our market data capabilities.This is a hands-on engineering role with a strong focus on availability, performance, automation and continuous improvement. You will have the opportunity to solve complex technical challenges, enhance the scalability and resilience of our market data estate … scalable performance.Lead technical planning for platform upgrades, lifecycle management, maintenance and production deployments.Develop automation for data ingestion, processing, monitoring and operational workflows.Support capacity planning, performance tuning and infrastructure improvements.Partner with technology teams, business stakeholders, exchanges and vendors to deliver effective market data solutions.Support compliance with relevant exchange policies ...