19 of 19 Performance Tuning Jobs in the City of London

department. MAIN RESPONSIBILITIES Database estate administration and monitoring Managing application system Disaster Recovery and high availability Managing backup and recovery strategies/automation of maintenance and batch processing Database performance tuning including TSQL/Procedural performance tuning (Optimizer and Index usage) Database design and architecture, development and administration Setting up best practice database development and acting … in a constructive manner Strong analytical skills Data Modelling Relational Database Design Database Application Development Microsoft - SQL Server/Transact SQL Server/Data Warehousing & Reporting PowerShell, DOS Database performance tuning Degree in Computer Science/Information Systems Design or equivalent Desirable: Knowledge of Fuel oil and the Bunker Industry desirable More ❯

migration experience. This role focuses on supporting enterprise-level systems, with PostgreSQL as the strategic database engine, and requires working collaboratively with development and infrastructure teams to ensure availability, performance, and scalability of data platforms. Key Responsibilities Cloud-Based & On-Prem DB Administration: Administer, configure, and optimize PostgreSQL, MS SQL Server, and Oracle databases hosted in AWS, Azure, and … on-premises. Database Design & Development: Design new schemas, optimize existing structures, and support database components aligned with application needs. Performance Tuning: Monitor and tune query and system performance across PostgreSQL, MS SQL, and Oracle DBs. Identify and resolve performance bottlenecks. Backup & Disaster Recovery: Define and implement robust backup/recovery procedures for multi-DB environments across … and scripting (e.g., Terraform, Ansible, AWS RDS/Aurora tools, Azure SQL automation). Monitoring & Health Checks: Utilize tools such as CloudWatch, Azure Monitor, OEM, or Prometheus to monitor performance and availability. Troubleshooting & Root Cause Analysis: Diagnose and resolve database incidents; conduct RCAs for critical incidents and outages. Collaboration: Work closely with DevOps, Application, and Security teams for seamless More ❯

as primary technical authority for Oracle database architecture with a specialized focus on Oracle Exadata platforms Lead deployment, configuration, and optimization of Oracle platforms, leveraging advanced features while establishing performance tuning methodologies and disaster recovery protocols Design data models, physical schemas, and partitioning strategies for high-volume workloads while overseeing database upgrades and patch deployment with minimal disruption … processing and high-frequency data operations Extensive experience with Oracle Exadata platforms, including configuration, optimization, and troubleshooting Hands-on expertise with Oracle RAC, Data Guard, ASM, RMAN, and advanced performance tuning techniques Deep understanding of Oracle database architecture, including advanced features and optimization techniques Experience with Oracle Enterprise Manager (OEM) for installation, upgrades, administration, and monitoring Knowledge of More ❯

business is actively expanding as there is additional headcount for a number trade platform specialist Java Development with a focus on either/or Quantitative Development or low-latency performance optimization. You will be working on greenfield projects to build out and enhance their low latency trading systems. THE ROLE: Working in a fast-paced trading environment as a … tune trading strategies across both spot and derivative markets. Based directly on the trading floor, you will play a crucial role in enhancing execution logic, automating workflows, and ensuring performance at scale for a high-frequency, multi-exchange setup. You will focus on optimising every component of the trading stackincluding multi-threading, network communication, order processing, and execution logicto … achieve ultra-low latency and high throughput. Robust monitoring, alerting, and performance tracking ensure system reliability. The team has deep expertise in trading protocols, messaging systems, network architectures, and concurrent computing to support a complex, high-frequency trading landscape. KEY RESPONSIBILITIES: Build and refine algorithmic trading models for use across various digital asset exchanges Improve and maintain dynamic hedging More ❯

in migrating legacy systems, especially from Oracle to PostgreSQL or similar. - Strong understanding of PL/SQL and experience translating stored procedures into application logic. - Familiarity with PostgreSQL, including performance tuning and SQL dialect differences. - Experience working in hybrid environments where legacy and modern systems coexist. - Comfortable using AI tools (e.g., GitHub Copilot, ChatGPT, code translators) to assist More ❯

Work independently and own feature development from concept to delivery. • Collaborate with the engineering team and contribute to the overall design of the system. • Develop automated tests and conduct performance tuning • Contribute to code reviews Key qualifications • Bachelor's degree in a technical field, computer science, software engineering or similar. • 10+ years’ experience in software development, spanning backend More ❯

automation, and enterprise-grade system performance. What You’ll Be Doing Administer and monitor enterprise systems, ensuring high availability Lead and manage a VMware virtualised environment : upgrades, provisioning, and performance tuning Automate infrastructure using tools like Ansible , PowerShell, or Bash Implement robust backup and disaster recovery strategies Enforce security measures, conduct audits, and ensure compliance Troubleshoot complex system … issues and support continuous improvement Document system configurations and generate performance reports What You’ll Bring 6+ years in systems administration or infrastructure engineering Expert-level VMware experience (upgrade, provisioning, tuning) Strong skills in Ansible and other automation/scripting tools Solid Linux/Windows OS knowledge Experience with Red Hat Satellite and patching infrastructure Excellent problem-solving More ❯

of it. Key Responsibilities: Design and deliver Power BI dashboards for external clients Build scalable data models using DAX and SQL Run stakeholder workshops to define dashboard requirements Optimise performance using DAX Studio and best-practice modelling Support broader data integration and delivery with cross-functional teams What You’ll Bring Extensive BI development experience in a client-facing … of DAX (CALCULATE, SUMX, VAR, FILTER, REMOVEFILTERS, time intelligence) Proficiency in SQL and solid understanding of tabular/star schema models Experience working with cloud platforms, ETL tools, and performance tuning Confident leading sessions with both technical and non-technical stakeholders Why Apply his is a key role within a growing analytics function, offering the chance to fully More ❯

a strong culture rooted in integrity, creativity, and technical excellence, they've become a trusted partner across global industries. In this role you'll take ownership of the reliability, performance, and deployment of React-based user interfaces used by clients around the world. You'll work very closely with SRE, DevOps, and Product Teams, and drive front-end observability … The ideal candidate will be someone who combines deep React expertise with infrastructure awareness. Candidates must be comfortable working with Kubernetes, AWS, CI/CD tooling, and browser-level performance monitoring. This is a fantastic opportunity to play a leading role in building robust, scalable, and reliable front-end systems in a company that invests in both people and … technology. The Role: *Owning React application reliability, observability, and performance in production environments *Designing and managing CI/CD Pipelines for automation testing, canary deployments, and rollbacks *Optimising front-end delivery via CDN configuration, caching strategies, and real user monitoring (Datadog/Sentry) *Collaborate with platform and SRE teams to ensure seamless delivery of React applications on Kubernetes and More ❯

core Java development skills including streams, lambdas, and advanced concurrency APIs Extensive experience and understanding of distributed systems, developing, profiling, and maintaining multi-threaded, asynchronous applications JVM monitoring, profiling, performance tuning, and debugging. Experience with analysis tools such as JConsole, JVisualVM, Elastic Search/Logstash, Prometheus; Open tracing Extensive experience of test driven development Knowledge of CI/ More ❯

systems that support critical research and trading workloads. This role offers the opportunity to work on innovative, high-impact projects at the intersection of cloud, open-source, and high-performance computing. The Role: Design and develop scalable data orchestration services across cloud and on-prem environments. Create unified platform abstractions to streamline data access across diverse storage technologies. Integrate … open-source and vendor storage solutions through rapid prototyping and engineering. Optimise storage performance and efficiency across large-scale infrastructure. Collaborate across engineering functions to deliver robust end-to-end platform capabilities. Own operational responsibilities: troubleshooting, performance tuning, and user support. Your Background: 5+ years' development experience with a degree in Computer Science, Engineering, or related field. … Datadog. Exposure either AWS or GCP plus IaC, (Terraform or similar) would be beneficial. Knowledge with open-source storage tools (Ceph, Minio, JuiceFS or Fuse) and familiarity with high-performance data transport protocols (RDMA, GPUDirect, DPDK) would be well received. This is a chance to contribute to a mission-critical team operating at the forefront of platform engineering in More ❯

with planning, management and resource allocation of inter-departmental projects alongside the company’s PM team. Oversee incident management, root cause analysis, and rapid resolution of system outages or performance degradation. Ensure compliance of company procedures such as change management, patch management and security and audit processes. Assist in the maintenance of these procedures. Support regular security audits and … 7+ years Linux system administration experience with at least 3 years in a managerial or team lead role. Strong expertise with RHEL-based systems, including installation, ongoing management, monitoring, performance tuning, system security hardening, etc. Proven track record of managing geographically distributed teams, including senior engineers and tier-1/2 support staff including on-call and rota More ❯

Act as SME for server virtualisation, storage integrations, HA/DR, and migration planning Work closely with clients to define technical requirements and provide architectural guidance Conduct health checks, performance tuning, and capacity planning of virtual environments Migrate legacy systems to modern virtual infrastructure (vSphere/Hyper-V to Azure, etc.) Document and support all solutions including HLDs More ❯

openness, and excellence. My client work in a collaborative style and take collective responsibility for successes and our failures. We value: High personal integrity Innovative thinking Efficient and reliable performance Spark You will join a supportive team, where we aim to recruit the best people from all walks of life and diverse business backgrounds. If these sentiments align with … the day-to-day operations of the Linux infrastructure team, including both senior-level system administrators and the Linux support desk staff. This role ensures the stability, security, and performance of mission-critical Linux-based systems including multiple exchanges as well as providing strategic direction, operational excellence, effective team leadership and close collaboration with other departments Responsibilities and Duties … initiatives. Assist with planning, management and resource allocation of inter-departmental projects alongside the PM team. Oversee incident management, root cause analysis, and rapid resolution of system outages or performance degradation. Ensure compliance of procedures such as change management, patch management and security and audit processes. Assist in the maintenance of these procedures. Support regular security audits and penetration More ❯

openness, and excellence. My client work in a collaborative style and take collective responsibility for successes and our failures. We value: High personal integrity Innovative thinking Efficient and reliable performance Spark You will join a supportive team, where we aim to recruit the best people from all walks of life and diverse business backgrounds. If these sentiments align with … the day-to-day operations of the Linux infrastructure team, including both senior-level system administrators and the Linux support desk staff. This role ensures the stability, security, and performance of mission-critical Linux-based systems including multiple exchanges as well as providing strategic direction, operational excellence, effective team leadership and close collaboration with other departments Responsibilities and Duties … initiatives. Assist with planning, management and resource allocation of inter-departmental projects alongside the PM team. Oversee incident management, root cause analysis, and rapid resolution of system outages or performance degradation. Ensure compliance of procedures such as change management, patch management and security and audit processes. Assist in the maintenance of these procedures. Support regular security audits and penetration More ❯

automate business processes. Integrate Power Apps with various data sources using standard and premium connectors and develop custom connectors if necessary Implement security measures for Power platform solutions Perform performance tuning and optimization of Power Platform solutions Participate in the deployment of Power Platform solutions to higher environments (QA, UAT, Production) Implement and enhance robust ALM process for More ❯

clients and sectors. You’ll work closely with technical squads, internal teams, and partners to build and scale a modern data capability —with a clear mandate to influence architecture, performance, security, and cost optimisation across the board. This is not a pure delivery or line management role — it’s for someone who wants to build IP , define methodology, coach … Define and lead Snowflake best practice across clients and internal teams ✅ Build repeatable assets, patterns, and frameworks (with an eye on reusability + commercial value) ✅ Guide squads on architecture, performance tuning, security, cost management ✅ Be the go-to Snowflake SME for our internal teams, partners, and clients ✅ Shape our internal Snowflake playbook and CoE vision You should have More ❯

In this role you'll take ownership of platform reliability, resilience engineering, and incident management across cutting-edge cloud infrastructure. You'll play a key role in ensuring uptime, performance, and continuous improvement of core systems. The ideal candidate will be an experienced Site Reliability Engineer with a deep background in AWS, Kubernetes (EKS), Terraform, and monitoring/eventing … tools. You'll have a strong grasp of application-level troubleshooting, chaos engineering, and performance tuning. This is a fantastic opportunity to work in a modern DevOps environment where innovation is encouraged, personal development is supported, and technical impact is real. The Role: *Manage and optimise AWS and Kubernetes (EKS) infrastructure *Implement resilience strategies and conduct chaos engineering experiments … Monitor and maintain Kafka clusters for performance and reliability *Respond to and resolve application-level production incidents The Person: *5+ years in SRE, DevOps, or infrastructure engineering *Strong experience with AWS, EKS/Kubernetes, and Terraform *Familiar with Kafka and observability tools like Datadog or Grafana *Able to troubleshoot issues across infrastructure and application layers Reference number: BBBH(phone More ❯

and collaborating with stakeholders to translate complex business requirements into scalable and maintainable Pega applications. CLSAs possess deep expertise in Pega Platform capabilities, including case management, decisioning, integrations, and performance tuning. They are skilled in enterprise architecture, agile methodologies, and governance, and play a critical role in quality assurance, code reviews, and guiding the overall technical vision of Pega … and collaborating with stakeholders to translate complex business requirements into scalable and maintainable Pega applications. CLSAs possess deep expertise in Pega Platform capabilities, including case management, decisioning, integrations, and performance tuning. They are skilled in enterprise architecture, agile methodologies, and governance, and play a critical role in quality assurance, code reviews, and guiding the overall technical vision of Pega More ❯