1 to 25 of 33 Performance Tuning Jobs in the City of London

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. ...

//risk.lexisnexis.com/insurance About our Team The Database Administration team provides enterprise-wide support for mission-critical database platforms, ensuring high availability, performance, security, and operational stability. The team manages MySQL, SQL Server, PostgreSQL, Oracle, and cloud database technologies across hybrid environments while driving automation, observability, disaster … members to provide technical designs and guidance to the Database Operations team. Take responsibility for the implications and impact of technical design decisions. Resolve performance issues and support root cause resolution. Perform thorough impact analysis for assigned database infrastructure activities and understand their effect on business operations. Respond ...

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 ...

changing and dynamic software world, Synergy Solutions International is now growing their team. Database Administrator Job Summary The successful candidate will be responsible for performance tuning of database systems, developing processes for optimizing database security, diagnosing and troubleshooting database errors, and recommending emerging database technologies. Performance tuning … Detailed understanding of Oracle Database operational running and replication Strong command of SQL and SQL toolsets Knowledge of database security, backup and recovery, and performance monitoring standards Unix Shell scripting Understanding of relational data modelling Strong mathematical and statistical knowledge Good written and verbal communications Experience with Unix environments ...

endpoints using NodeJS and Express, including detailed API documentation. Database Management: Design, optimize, and maintain complex SQL data models, ensuring efficient data structures, query performance, and reliability. Full‐Stack Development: Develop responsive and performant front‐end applications using ReactJS, focusing on UX/UI best practices. Integration & Automation: Architect … development teams and managing large‐scale projects. Database Expertise: In‐depth experience with PostgreSQL/SQL, including design of complex schemas, writing queries and performance optimisation. Security & Performance: Deep understanding of application security best practices, performance tuning, and scalable architecture. Problem‐Solving: Ability to troubleshoot complex ...

proposals, architecture options papers, and business cases to senior stakeholders and governance boards Lead architecture assurance and design authority reviews, ensuring solutions meet security, performance, resilience, and compliance requirements Define solution patterns and reference architectures for Oracle cloud workloads that can be reused across programmes Manage technical risk throughout … above) on-premises and in cloud Manage Oracle Database Service deployments across OracleDB@Azure, OracleDB@AWS, and OracleDB@GCP Perform database performance tuning, patching, backup and recovery, and capacity planning Manage Oracle RAC, Data Guard, and ASM environments Support Oracle Advanced Security features including TDE, audit vault ...

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 ...

data delivery across multiple business functions. Develop and support Lakeflow pipelines, Delta Lake implementations, and modern data engineering frameworks. Drive best practices across performance optimisation, security, governance, monitoring, and platform reliability. Collaborate with business, data, and technology teams to deliver high-quality data products that support organisational growth … Factory, ADLS, Key Vault, and other Azure services. Hands-on experience with Git, CI/CD pipelines, deployment automation, and production support. Strong troubleshooting, performance tuning, and optimisation experience across Databricks and SQL environments. Excellent stakeholder engagement and communication skills, with the ability to operate effectively across both ...

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 … Architecture, DevOps, and Product Mentor and guide engineers to improve technical capability and engineering standards Experience/Competences 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 ...

environments. Essential Criteria 8-10+ years of dedicated experience delivering complex enterprise data migration and data engineering projects. Mastery of SQL (complex joins, performance tuning, advanced analytical queries, and reconciliation). Strong Azure Cloud Stack Experience: Azure Data Factory (ADF) Azure SQL DB Azure Data Lake/ ...

objectives into sound technical designs and testable acceptance criteria; decompose epics into implementable stories Design and implement complex features; complete complex bug fixes and performance improvements Define and uphold Definition of Ready/Done including code quality, automated test coverage, security checks, and observability Establish/maintain CI/…/JVM, JavaScript/TypeScript, .NET/C#, Python, C/C++, SQL, Linux, or Windows Experience with relational and non‐relational data stores, performance tuning, and data modelling Knowledge of CI/CD platforms, containers, cloud technologies, observability, and monitoring practices Understanding of secure coding, performance ...

Elsevier is looking for a Systems Engineer I to join our TIO team. In this role, you'll help ensure the reliability, scalability, and performance of the systems that power Elsevier's products, working closely with software engineers, platform teams, and other systems engineers. This is an entry … their career who want to grow their skills in cloud infrastructure, automation, and operational excellence. Responsibilities Monitor, maintain, and improve the reliability, availability, and performance of production systems running on AWS Respond to incidents and help drive root cause analysis and postmortems Build and maintain automation for deployment, monitoring ...

development using PL/SQL Strong SQL skills and experience using tools such as SQL Developer, Toad or SQL*Plus Experience writing complex and performance-focused SQL queries Experience debugging and performance-tuning PL/SQL Experience with ETL processes and data extraction/transformation/loading ...

analytics and reporting. Collaborate with cross‐functional teams to understand data requirements and deliver robust solutions. Monitor, troubleshoot, and enhance data workflows for performance and reliability. Maintain technical documentation and contribute to data engineering best practices. Required Skills & Qualifications: Strong experience withDatabricks- DLT, Delta Lake concepts, UC governance. Solid …/ELT processes, and data architecture. Experience in MS Copilot, AI Foundry , Databricks (MosiacAI, MLflow, Agentbricks, Genie) Strong analytical background with problem‐solving skills. Performance tuning concepts like watermarking, late data handling, parallelism & checkpointing. Hands‐on expertise inADF, and Qlik Replicatefor data ingestion and replication. Experience working inAzure ...

forestall future enhancements. Investigate, troubleshoot, and resolve Real Time production issues, working closely with traders, developers, and infrastructure teams. Ensure continuous system stability and performance across all FICC trading platforms, supporting both traders and institutional clients. Serve as the local subject matter expert for EMEA FICC trading infrastructure, owning … reduce manual intervention. Provide technical expertise on connectivity, data flows, and integration points between trading, pricing, and risk systems. Contribute to capacity planning, performance tuning, and resilience testing. Support global follow-the-Sun coverage and participate in on-call rotation as required. Required Skills and Experience: Tech ...

call burden. Apply AI and machine learning tools to improve developer productivity, automate operational tasks, and enhance system capabilities. Evaluate and introducenew technologiesthat improve performance, reliability, or engineering velocity. WHAT YOU NEED TO KNOW (or TECHNICAL SKILLS) Proven ability to reasonaboutdistributed systemstradeoffs- scalability, consistency, availability, latency and make defensible … traffic systems at scale - this is a coding role first. Expertisein Java (17+); and the JVM, withstrongcommand of JVM internals, garbage collection behavior, and performance tuning under load. Kotlin is a plus. Hands-on experience with a reactive, non-blocking framework (Vert.x, SpringWebFlux, or equivalent) and asynchronous, event ...

business applications. This role involves building scalable, cloud-based solutions, integrating with third-party platforms and ensuring operational reliability while meeting strict compliance and performance standards, in a highly regulated financial environment. Responsibilities Analyze business requirements and translate them into technical solutions Design, implement, and maintain modern, cloud-enabled … environment Nice to Have Skills: Good scripting experience with Powershell/Bash Knowledge of market gateways and clearing connectivity (exchange-facing flows) Understanding of performance tuning and application resilience for high-volume middle office systems Familiarity with container orchestration and microservices-based architectures #J-18808-Ljbffr ...

Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing & Risk, working on our high-performance, high-frequency trading platform. This is a hands-on role at the core of our market-making technology stack, where nanoseconds matter and engineering excellence … critical. You will design and build ultra-low latency pricing and risk systems that directly power our global trading operations. If you thrive in performance critical environments and want your work to have real market impact, we would love to hear from you. Please note that this ...

technology operates at serious scale, with response times in the 10-100 microsecond range. We're looking for experience in: Modern Java and JVM performance optimisation Low-latency algorithmic trading systems Market data and back-testing/simulation tools Linux internals, system calls and kernel tuning TCP/… kernel-bypass technologies Event-driven or event-sourcing microservices Performance analysis and targeted optimisation Experience with KDB, Rust or C++ would be highly advantageous. London - hybrid working, with up to two days from home £Excellent basic plus strong bonus potential This is an excellent opportunity for someone who remains ...

improvements to monitoring, logging, and observability platforms. Driving automation and infrastructure-as-code best practices. Supporting and enhancing Kubernetes and GitOps deployments. Troubleshooting complex performance and reliability issues. Collaborating with technical teams to improve platform scalability, resilience, and security. Promoting DevOps best practices across engineering teams. Requirements: Strong experience … essential Experience with Ansible Knowledge of Kafka Strong Kubernetes experience Experience with ArgoCD Advanced scripting and automation skills Experience with GitLab Strong troubleshooting and performance tuning experience Infrequent travel to London ECS Recruitment Group Ltd is acting as an Employment Business in relation to this vacancy. ...

engines (e.g., Starburst or similar) Own API contracts with living documentation in CI/CD Build production-grade, testable pipelines Drive observability, reliability, and performance Contribute to architecture decisions (modularity, DI, extensibility) What You Bring (Must-Have) Strong hands-on experience in Java (17/21) + Spring Deep … parsing/validation, query planning/optimization Experience with SQL planners or query transformation layers Strong grounding in data structures, algorithms, and backend performance Production-grade testing using JUnit 5, Mockito Experience with clean architecture, DI, modular design Comfortable owning CI/CD, code quality, observability Familiarity with Docker ...

report troubleshooting. Support and maintain data warehouse environments such as Azure Synapse Analytics, SQL Server/Azure SQL DB, Snowflake or BigQuery. Monitor ETL performance and investigate slow-running queries and data load failures. Issue Investigation & RCA Investigate job failures and performance issues across data pipelines, ML endpoints … Warehousing – SQL skills for debugging, data validation, and optimization; experience with Azure SQL DB or SQL Server; familiarity with data modeling concepts and warehouse performance tuning. Support & Incident Management – Strong troubleshooting and analytical skills for root cause analysis; exposure to ITSM tools such as ServiceNow and Jira. Preferred Qualifications ...

consumers of the graph Writes and optimises Cypher queries for data loading, transformation, and application-facing retrieval Implements graph data models that balance query performance with semantic accuracy Builds and maintains APIs/integration layers exposing graph data to downstream consumers (including the chatbot) Collaborates with the Knowledge Graph … Architect to implement ontology, knowledge and schema changes as code Supports performance tuning, indexing, and scaling of the Neo4j instance Automates data refresh and synchronisation processes between source systems and the graph Troubleshoots data integrity and pipeline issues in collaboration with the Quality Engineer Documents graph schema ...

/4HANA, SAP ECC, SAP BTP, SAP PI/PO, SAP Fiori/UI5, and integrated enterprise systems. This role ensures high‐performance, scalable, secure, and future‐ready SAP solutions that align with business strategy and IT roadmaps. The architect collaborates closely with business leaders, solution architects, Basis, development … Deep understanding of SAP system landscape design, including DEV/QAS/PRD/DR environments. In‐depth knowledge of SAP Basis, system sizing, performance tuning, high‐availability (HA) and disaster recovery (DR) configurations. Strong experience with SAP HANA database architecture, optimization, backup/restore strategies, and security. ...

reused across multiple brands and platforms. Drive engineering excellence for the services you own by championing code quality, automated testing, observability, performance optimization, and simplification, taking technical responsibility for service health, scalability, resilience, and the ongoing reduction of technical debt and operational overhead. Provide technical mentorship and guidance … experience. 8+ years of relevant professional software development experience with a strong focus on backend development, using Java or Kotlin, building and operating high-performance, high-throughput, highly available, and scalable services on cloud platforms. Proven experience owning one or more production services or components throughout their lifecycle, including ...