1 to 25 of 206 Permanent Performance Tuning Jobs in London

Mainframe Performance QA Engineer BCP Special Pool IRC248855 Job: IRC248855 Location: United Kingdom - London Designation: Lead Test Engineer Experience: 5-10 years Function: Quality Assurance Skills: DB2, IBM IMS, JCL, Performance testing/tuning, z/OS Work Model: Remote, Hybrid The client is a world-leading … years of hands-on experience: Good knowledge of IMS (log (IMS type 07 and Type 56FA) and ABEND analysis, DC Monitor (DFSUTR20), STROBE, Performance Analyzer, IMSASAP/GPAR, ability to read SYSUDUMPs, etc.) Performance tuning techniques: OS (z/OS,) Database (IMS, DB2) with focus on IMS … tuning Strong expertise in performance testing and tuning Strong technical QA experience Excellent skills in defining, documenting, and analyzing test strategy, test plan, test cases, and test results Excellent test case execution and troubleshooting skills Testing proficiency (release-specific testing, regression testing) Testing in a Waterfall environment More ❯

to Obtain: Secret Potential for Remote Work: Remote Benefits: Click here The SQL Server DBA will be responsible for the implementation, configuration, maintenance, and performance of critical SQL Server RDBMS systems, to ensure the availability and consistent performance of our corporate applications. This is a "hands-on" position … skills. The successful candidate will be responsible for the development and sustainment of the SQL Server Warehouse, ensuring its operational readiness (security, health and performance), executing data loads, and performing data modeling in support of multiple development teams. The data warehouse supports an enterprise application suite of program management … multiple product lifecycle environments, from development to mission-critical production systems. Configure and maintain database servers and processes, including monitoring of system health and performance, to ensure high levels of performance, availability, and security. Apply data modeling techniques to ensure development and implementation support efforts meet integration and More ❯

team carrying out hybrid Devops/SRE/Business App support. The Site Reliability Engineer (SRE) is responsible for ensuring the reliability, availability, and performance of the bank's critical systems and infrastructure. The SRE focuses on building & supporting scalable solutions to improve system resiliency, automating repetitive operational tasks … Introduction, Project, Architecture & Design initiatives and support discussions. • Coach, Mentor and Support team members. • Drive continual improvement supporting the KPI's. 2. Reliability and Performance • Monitor and maintain the reliability, uptime, and performance of production systems and services. • Design and implement tools and frameworks to proactively identify and … mitigate potential issues. • Conduct performance tuning and capacity planning to ensure systems scale with the bank's needs. 3. Incident Management and Root Cause Analysis • Lead the response to critical incidents, ensuring swift resolution to minimize business impact. • Support Application and Business teams triaging incidents and problems. • Conduct More ❯

team carrying out hybrid Devops/SRE/Business App support. The Site Reliability Engineer (SRE) is responsible for ensuring the reliability, availability, and performance of the bank's critical systems and infrastructure. The SRE focuses on building & supporting scalable solutions to improve system resiliency, automating repetitive operational tasks … balances operational responsibilities with engineering innovation to align with the bank's strategic goals of delivering seamless and secure services. Responsibilities: 1. Reliability and Performance • Monitor and maintain the reliability, uptime, and performance of production systems and services. • Design and implement tools and frameworks to proactively identify and … mitigate potential issues. • Conduct performance tuning and capacity planning to ensure systems scale with the bank's needs. 2. Incident Management and Root Cause Analysis • Support the response to critical incidents, ensuring swift resolution to minimize business impact. • Support Application and Business teams triaging incidents and problems. • Support More ❯

carrying out hybrid Devops/SRE/Business App support. The Lead Site Reliability Engineer (SRE) is responsible for ensuring the reliability, availability, and performance of the bank's critical systems and infrastructure. The SRE focuses on building & supporting scalable solutions to improve system resiliency, automating repetitive operational tasks … with the bank's strategic goals of delivering seamless and secure services. Responsibilities: 1. Leadership • Coach, Mentor and Support team members. 2. Reliability and Performance • Monitor and maintain the reliability, uptime, and performance of production systems and services. • Design and implement tools and frameworks to proactively identify and … mitigate potential issues. • Conduct performance tuning and capacity planning to ensure systems scale with the bank's needs. 3. Incident Management and Root Cause Analysis • Lead the response to critical incidents, ensuring swift resolution to minimize business impact. • Support Application and Business teams triaging incidents and problems. • Conduct More ❯

best Enhancing our automated testing efforts and optimizing our UAT process Serving as advisor or coach to new or lower-level analysts Troubleshooting challenging performance and scalability issues Engaging with business users in London and across Europe (Paris, Milan) Assisting in third line support during core trading hours Acting … team members. Liaising with the global business, support, and development teams on various exciting projects Job Opportunities: Build a strong profile in a high-performance global team (London, Paris, NY) Develop efficient and robust solutions to challenging business problems. Work on a globally distributed team to deliver the next … and Linux Experience developing large financial software trading systems with substantial hands-on development experience in building systems with an attention to optimizing and tuning performance, while also demonstrating critical thinking skills related to re-use, scalability, and troubleshooting. Prior experience in building algo trading systems is highly More ❯

be responsible for designing, implementing, managing, and optimizing Azure SQL database environments. This role requires expertise in cloud-based database administration, high availability solutions, performance tuning, and security best practices. You will collaborate with development, infrastructure, and security teams to ensure efficient database operations that align with business … objectives. Main Duties and Responsibilities Design, implement, and maintain Azure SQL databases to support business applications. Monitor and optimize database performance, security, and availability. Configure and manage high availability and disaster recovery (HA/DR) solutions such as Always On Availability Groups. Perform database tuning, indexing, and query … . Expertise in database backup, recovery, and disaster recovery planning. Experience implementing security best practices, including RBAC, encryption, and auditing . Strong understanding of performance tuning techniques , including indexing strategies and query optimization. Familiarity with PowerShell scripting and Infrastructure as Code (IaC) tools such as Terraform or ARM More ❯

Salary: Up to £280k base + Benefits Our client is a global leader focused on delivering mission-critical, low latency infrastructure solutions for high-performance trading environments. They are looking for a highly skilled Platform Specialist to join their talented team and ensure the highest levels of availability, performance … this role, you will: Design, document, and enhance platform services including servers, storage, and cloud infrastructure. Provide L3 escalation support to troubleshoot and remediate performance and availability issues. Collaborate with internal and external partners including network, application, quant, and business teams to deliver scalable solutions. Proactively identify potential system … bottlenecks and implement performance tuning and optimizations. Manage and tune Linux systems (RHEL, Rocky, CentOS, OEL) for low latency applications, including memory, CPU, and network tuning. Work closely with low latency network technologies, including kernel bypass with Solarflare/onload, and understand physical server architecture differences (Intel, AMD More ❯

Salary: Up to £280k base + Benefits Our client is a global leader focused on delivering mission-critical, low latency infrastructure solutions for high-performance trading environments. They are looking for a highly skilled Platform Specialist to join their talented team and ensure the highest levels of availability, performance … this role, you will: Design, document, and enhance platform services including servers, storage, and cloud infrastructure. Provide L3 escalation support to troubleshoot and remediate performance and availability issues. Collaborate with internal and external partners including network, application, quant, and business teams to deliver scalable solutions. Proactively identify potential system … bottlenecks and implement performance tuning and optimizations. Manage and tune Linux systems (RHEL, Rocky, CentOS, OEL) for low latency applications, including memory, CPU, and network tuning. Work closely with low latency network technologies, including kernel bypass with Solarflare/onload, and understand physical server architecture differences (Intel, AMD More ❯

Location: London, UK About the Client: We are partnering with an exciting, disruptive technology company at the forefront of machine learning (ML) and high-performance GPU computing. This innovative firm is leveraging cutting-edge GPU technology to optimize machine learning algorithms and computational models, powering the next wave of … AI and data-driven applications. Their mission is to drive performance optimization in ML and AI workloads, transforming industries such as autonomous vehicles, healthcare, and immersive gaming experiences. This is a fantastic opportunity for someone passionate about low-level systems programming and ML optimization to be part of a … the future of technology. The Role: We are seeking a Low-Level C++ Engineer to join their team and work directly on optimizing GPU performance for machine learning (ML) workloads. As part of the ML optimization team, you will be responsible for developing and fine-tuning GPU-level More ❯

technologies. Scripting: SQL, PL/SQL, Shell, PowerShell. Tools: pgAdmin, SSMS, Oracle Enterprise Manager, AWS RDS, Azure SQL, etc. Backup solutions, monitoring tools, and performance tuning utilities. Minimum Qualifications: Degree or equivalent qualification; 2-3 years of Database Administration experience. Duties and Responsibilities: Database Management & Maintenance Install, configure … and upgrade database management systems (DBMS) such as Oracle, SQL Server, MySQL, PostgreSQL, etc. Perform routine maintenance including backups, updates, and patches. Monitor database performance and tune for efficiency (indexing, query optimization, etc.). Manage database storage and capacity planning. Security & Compliance Implement and manage database security policies including … recovery strategies. Perform regular data backups and test restoration procedures. Respond quickly to restore data in the event of a failure or breach. Monitoring & Performance Tuning Monitor database activity and usage. Analyze slow-running queries and make recommendations for optimization. Use tools to track performance metrics and More ❯

across data platform components Provide technical leadership and mentorship to engineers across the team Experience Strong, hands-on experience with Databricks , including migration projects, performance tuning, and solution delivery (not just high-level design) Experience migrating data and logic from traditional SQL Server environments to Databricks , including rewriting … Solid experience with infrastructure-as-code , deployment automation, and DevOps in data environments (e.g., Azure DevOps, Terraform, ARM templates) Excellent skills in T-SQL , performance tuning, and optimizing large-scale data solutions Key Skills & Attributes Strong balance of hands-on engineering and strategic architectural thinking Able to independently More ❯

client reporting, regulatory, surveillance, supervisory reporting(s) and data science solutions. It will also provide enhanced data quality controls , completeness and accuracy, reconciliations, entitlements, performance, management of data retention and archival per regulatory guidelines. Risk data program involves centralizing the Risk data across Markets and have one golden source … and retaining top and diverse talent Manage/develop multiple teams of professionals to accomplish established goals and conduct personnel duties for team (e.g. performance evaluations, hiring and disciplinary actions) as well as ensure team adheres to best practices and process Develop vision for team around roles and responsibilities … Data architecture , strong Software development fundamentals, data structures, design patterns, object-oriented principles Experience in design and delivery of multi-tiered applications and high performance server side components Skills on system performance tuning, high performance, low latency, multithreading and experience with Java server side programming Preferred More ❯

Staff Software Engineer, GPU Performance, Core ML link Copy link corporate_fare Google place London, UK Advanced Experience owning outcomes and decision making, solving ambiguous problems and influencing stakeholders;deep expertise in domain. Apply link Copy link Bachelor's degree or equivalent practical experience. 8 years of experience in … or Python). 5 years of experience with Machine Learning (ML) design and ML infrastructure (e.g., model deployment, model evaluation, data processing, debugging, fine tuning). Experience working with GPUs. Experience in a technical leadership role leading project teams and setting technical direction. Preferred qualifications: Master's degree or … Expertise in tailoring algorithms and ML models to exploit GPU strengths and minimize weaknesses. Knowledge of low-level GPU programming (CUDA, OpenCL, etc.) and performance tuning techniques. Understanding of modern GPU architectures, memory hierarchies, and performance bottlenecks. Ability to develop and utilize sophisticated performance models and More ❯

database structure design and T-SQL. The ideal candidate will have expertise in MS SQL Server and a passion for developing and optimizing the performance of particularly complex datasets. Experience of using SQL Server Database Systems is a must and you must have a creative mindset, willing to develop … to their effectiveness across multiple media channels. Using your interest in database developments, builds, migrations and upgrades, you will be responsible for enhancing the performance of this dashboard and other YouGov Sport systems. Overall role objectives: Work alongside experienced colleagues to maintain and develop YouGov Sport databases, working towards … ll do (not all of it, just the important stuff): Design, develop, implement, and maintain database solutions using MS SQL Server, ensuring scalability, reliability, performance and security. Develop SQL DB objects as per the design and defined standards. Maintain/Write SQL database schemas and scripts, including views, stored More ❯

/8. Experience with app authentication using Azure AD/B2C. Scripting and Automation: Proficient in scripting and automation with Python, Bash, or PowerShell. Performance & Scalability: Experience with performance testing, auto-scaling strategies, and database performance tuning. Security & Best Practices: Knowledge of security best practices in cloud … environments. Additional Experience: Experience with Python, SQL, and NoSQL database performance tuning, as well as progressive deployment techniques, would be highly desirable. The successful Azure DevOps Engineer/SRE will earn up to £80,000 and in addition there are exceptional benefits which come as part of the More ❯

/8. Experience with app authentication using Azure AD/B2C. Scripting and Automation: Proficient in scripting and automation with Python, Bash, or PowerShell. Performance & Scalability: Experience with performance testing, auto-scaling strategies, and database performance tuning. Security & Best Practices: Knowledge of security best practices in cloud … environments. Additional Experience: Experience with Python, SQL, and NoSQL database performance tuning, as well as progressive deployment techniques, would be highly desirable. The successful Azure DevOps Engineer/SRE will earn up to £80,000 and in addition there are exceptional benefits which come as part of the More ❯

low-latency trading infrastructure? Our client, a global quantitative trading firm, is searching for a Core C++ Developer to push the boundaries of high-performance computing. This role offers the chance to optimise execution speed, enhance system scalability, and collaborate with top-tier engineers to develop trading systems at … the cutting edge of technology... Key Responsibilities Design and optimise high-performance, low-latency trading infrastructure in modern C++ (C++17/20) Develop and fine-tune order execution and risk management systems, ensuring robustness and efficiency Optimise CPU performance, memory management, and multi-threaded applications for peak efficiency … Implement and refine networking performance, including TCP/UDP tuning and kernel bypass techniques (AF_XDP, DPDK) Benchmark, profile, and debug real-time systems, reducing latency and maximising throughput Collaborate with quantitative researchers, traders, and infrastructure engineers to improve execution speed Ensure fault tolerance and system resilience, maintaining More ❯

low-latency trading infrastructure? Our client, a global quantitative trading firm, is searching for a Core C++ Developer to push the boundaries of high-performance computing. This role offers the chance to optimise execution speed, enhance system scalability, and collaborate with top-tier engineers to develop trading systems at … the cutting edge of technology... Key Responsibilities Design and optimise high-performance, low-latency trading infrastructure in modern C++ (C++17/20) Develop and fine-tune order execution and risk management systems, ensuring robustness and efficiency Optimise CPU performance, memory management, and multi-threaded applications for peak efficiency … Implement and refine networking performance, including TCP/UDP tuning and kernel bypass techniques (AF_XDP, DPDK) Benchmark, profile, and debug real-time systems, reducing latency and maximising throughput Collaborate with quantitative researchers, traders, and infrastructure engineers to improve execution speed Ensure fault tolerance and system resilience, maintaining More ❯

Mainframe Architect Salary: Upwards from £120,000 per annum + performance-related bonus Location : London-based (hybrid), with flexibility for occasional travel to client sites. The Role We are seeking an experienced Mainframe Architect to lead the design, implementation, and modernisation of mission-critical mainframe solutions for high-profile … clients. This role is pivotal in bridging business requirements with cutting-edge technology, ensuring seamless integration, scalability, and performance across complex enterprise environments. As a Mainframe Architect , you will be responsible for crafting tailored mainframe database architectures, working closely with stakeholders to define solutions that align with both client … needs and industry best practices. You will oversee the technical execution of projects from inception to delivery, ensuring efficiency, security, and performance optimization. This is a strategic leadership role that requires both deep technical expertise and the ability to communicate complex solutions to technical and non-technical stakeholders alike. More ❯

Mainframe Architect Salary: Upwards from £120,000 per annum + performance-related bonus Location : London-based (hybrid), with flexibility for occasional travel to client sites. The Role We are seeking an experienced Mainframe Architect to lead the design, implementation, and modernisation of mission-critical mainframe solutions for high-profile … clients. This role is pivotal in bridging business requirements with cutting-edge technology, ensuring seamless integration, scalability, and performance across complex enterprise environments. As a Mainframe Architect , you will be responsible for crafting tailored mainframe database architectures, working closely with stakeholders to define solutions that align with both client … needs and industry best practices. You will oversee the technical execution of projects from inception to delivery, ensuring efficiency, security, and performance optimization. This is a strategic leadership role that requires both deep technical expertise and the ability to communicate complex solutions to technical and non-technical stakeholders alike. More ❯

S3, Redshift, Athena, and Lake Formation. Implement data governance, security, and compliance best practices, including IAM roles, encryption, and access controls. Monitor and optimize performance of data workflows using CloudWatch, AWS Step Functions, and performance tuning techniques. Automate data processes using Python, PySpark, SQL, or AWS SDKs. … and business intelligence initiatives. Maintain and enhance CI/CD pipelines for data infrastructure using Terraform, CloudFormation, or CDK. Troubleshoot and resolve data integration, performance, and reliability issues in a cloud environment. Required Skills & Qualifications: 5+ years of experience in data engineering with a strong focus on AWS cloud … Apache Spark, Hadoop, or Presto. Hands-on experience with machine learning pipelines and AI/ML data engineering on AWS. Benefits: Competitive salary and performance-based bonus structure. Join a rapidly expanding start-up where personal growth is a part of our DNA. Benefit from a flexible work environment More ❯

and fund administrators. Collaboration: work closely with front-end developers, product managers, and other stakeholders to deliver high-quality features that meet customer needs. Performance Tuning: identify and resolve performance bottlenecks in the back-end services and ensure efficient data flow and processing. Security: implement best practices More ❯

seeking a talented Software Engineer who will play a critical role in developing and optimizing high-frequency trading systems, ensuring they operate at peak performance with minimal latency. This is an opportunity to work in a fast-paced, intellectually challenging environment where your contributions will have a direct impact … where you will work and learn from the best. As a Software Engineer you will have the following responsibilities: Design, develop, and maintain high-performance trading applications. Performance tuning of state of the art trading systems - optimise code for maximum speed and efficiency, minimising latency. Implement and More ❯

seeking a talented Software Engineer who will play a critical role in developing and optimizing high-frequency trading systems, ensuring they operate at peak performance with minimal latency. This is an opportunity to work in a fast-paced, intellectually challenging environment where your contributions will have a direct impact … where you will work and learn from the best. As a Software Engineer you will have the following responsibilities: Design, develop, and maintain high-performance trading applications. Performance tuning of state of the art trading systems - optimise code for maximum speed and efficiency, minimising latency. Implement and More ❯