1 to 25 of 122 Remote 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 ❯

Outside IR35 Start date: ASAP, 12-month contract What you'll be doing Leading the development of scalable, reliable systems for training and fine-tuning transformer-based models Optimising inference pipelines for real-time applications — aiming for low latency and high throughput Exploring and applying advanced fine-tuning methods like LoRA, prefix-tuning, and adapters Tuning performance across GPUs and systems using tools like DeepSpeed, Triton, TensorRT, and even custom kernels Working closely with research, platform, and product teams to deliver new features and enhance the developer experience Identifying and resolving bottlenecks through profiling … benchmarking, and performance tuning Helping to define best practices for building, testing, and maintaining production ML services and APIs Mentoring other engineers and helping to foster a culture of technical excellence and innovation What our client is looking for 7+ years of experience building and deploying large-scale More ❯

Outside IR35 Start date: ASAP, 12-month contract What you'll be doing Leading the development of scalable, reliable systems for training and fine-tuning transformer-based models Optimising inference pipelines for real-time applications — aiming for low latency and high throughput Exploring and applying advanced fine-tuning methods like LoRA, prefix-tuning, and adapters Tuning performance across GPUs and systems using tools like DeepSpeed, Triton, TensorRT, and even custom kernels Working closely with research, platform, and product teams to deliver new features and enhance the developer experience Identifying and resolving bottlenecks through profiling … benchmarking, and performance tuning Helping to define best practices for building, testing, and maintaining production ML services and APIs Mentoring other engineers and helping to foster a culture of technical excellence and innovation What our client is looking for 7+ years of experience building and deploying large-scale More ❯

Outside IR35 Start date: ASAP, 12-month contract What you'll be doing Leading the development of scalable, reliable systems for training and fine-tuning transformer-based models Optimising inference pipelines for real-time applications — aiming for low latency and high throughput Exploring and applying advanced fine-tuning methods like LoRA, prefix-tuning, and adapters Tuning performance across GPUs and systems using tools like DeepSpeed, Triton, TensorRT, and even custom kernels Working closely with research, platform, and product teams to deliver new features and enhance the developer experience Identifying and resolving bottlenecks through profiling … benchmarking, and performance tuning Helping to define best practices for building, testing, and maintaining production ML services and APIs Mentoring other engineers and helping to foster a culture of technical excellence and innovation What our client is looking for 7+ years of experience building and deploying large-scale More ❯

eFX trading systems Java Developer +Hybrid working in London +6 months + +Inside IR35 +£500 - £600 a day Skills: + Low latency & high performance tuning +FX experience To support financial and technology teams in London responsible for the client's state of the art global electronic FX … experience of tools associated with Enterprise Java application development eg: BitBucket/Git Flow SonarQ TeamCity IntelliJ Jira Devops Containerisation Virtualisation Low latency & high performance tuning If you'd like to discuss this role in more detail, please send your updated CV to (url removed) and I will More ❯

system optimization. This role requires hands-on experience with UCS Fabric Interconnects, service profiles, VMware clusters, and best practices for maintaining high availability and performance during upgrade processes. Role Responsibilities UCS Firmware Upgrades: Plan, coordinate, and execute UCS firmware upgrades across Fabric Interconnects, blades, and rack servers. Ensure minimal … Maintenance: Upgrade VMware ESXi hosts and ensure compatibility with UCS firmware versions. Validate upgrades in staging/UAT environments before deployment to production. Address performance, compatibility, and licensing considerations post-upgrade. Performance Monitoring & Troubleshooting: Monitor system performance pre- and post-upgrade to ensure stability. Investigate and resolve … any upgrade-related failures or performance degradations. Work with cross-functional teams to address any interoperability issues. Capacity Planning & Scalability: Assess current infrastructure to determine upgrade impacts and resource requirements. Plan for future scalability while ensuring UCS and ESXi environments remain optimized. Documentation & Reporting: Maintain detailed records of upgrade More ❯

system optimization. This role requires hands-on experience with UCS Fabric Interconnects, service profiles, VMware clusters, and best practices for maintaining high availability and performance during upgrade processes. Role Responsibilities UCS Firmware Upgrades: Plan, coordinate, and execute UCS firmware upgrades across Fabric Interconnects, blades, and rack servers. Ensure minimal … Maintenance: Upgrade VMware ESXi hosts and ensure compatibility with UCS firmware versions. Validate upgrades in staging/UAT environments before deployment to production. Address performance, compatibility, and licensing considerations post-upgrade. Performance Monitoring & Troubleshooting: Monitor system performance pre- and post-upgrade to ensure stability. Investigate and resolve … any upgrade-related failures or performance degradations. Work with cross-functional teams to address any interoperability issues. Capacity Planning & Scalability: Assess current infrastructure to determine upgrade impacts and resource requirements. Plan for future scalability while ensuring UCS and ESXi environments remain optimized. Documentation & Reporting: Maintain detailed records of upgrade More ❯

system optimization. This role requires hands-on experience with UCS Fabric Interconnects, service profiles, VMware clusters, and best practices for maintaining high availability and performance during upgrade processes. Role Responsibilities UCS Firmware Upgrades: Plan, coordinate, and execute UCS firmware upgrades across Fabric Interconnects, blades, and rack servers. Ensure minimal … Maintenance: Upgrade VMware ESXi hosts and ensure compatibility with UCS firmware versions. Validate upgrades in staging/UAT environments before deployment to production. Address performance, compatibility, and licensing considerations post-upgrade. Performance Monitoring & Troubleshooting: Monitor system performance pre- and post-upgrade to ensure stability. Investigate and resolve … any upgrade-related failures or performance degradations. Work with cross-functional teams to address any interoperability issues. Capacity Planning & Scalability: Assess current infrastructure to determine upgrade impacts and resource requirements. Plan for future scalability while ensuring UCS and ESXi environments remain optimized. Documentation & Reporting: Maintain detailed records of upgrade 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 ❯

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 … with Senior Stakeholders such as PMs, Quants and Traders 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 … with Senior Stakeholders such as PMs, Quants and Traders 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 … with Senior Stakeholders such as PMs, Quants and Traders 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 ❯

including IAM roles, policies, and encryption Manage WAF configurations, compliance requirements, and security event monitoring Collaborate with internal teams on policies and standards 💾 Database & Performance Optimization Oversee RDS management, backup strategies, failover configurations, and performance tuning Optimize caching using Elasticache to boost system performance 📈 Monitoring, Observability More ❯

including IAM roles, policies, and encryption Manage WAF configurations, compliance requirements, and security event monitoring Collaborate with internal teams on policies and standards 💾 Database & Performance Optimization Oversee RDS management, backup strategies, failover configurations, and performance tuning Optimize caching using Elasticache to boost system performance 📈 Monitoring, Observability More ❯

including IAM roles, policies, and encryption Manage WAF configurations, compliance requirements, and security event monitoring Collaborate with internal teams on policies and standards 💾 Database & Performance Optimization Oversee RDS management, backup strategies, failover configurations, and performance tuning Optimize caching using Elasticache to boost system performance 📈 Monitoring, Observability More ❯

leading investment platforms and back-office systems in the UK. Your Skills/Background: Design and Build of High Volume Database Architectures, TSQL, SQL, Performance Tuning. Who we are: We re Sprint Enterprise Technology a small, high-impact fintech company, doing big things in the UK wealth management industry … private cloud, carefully managed by our own Infrastructure Engineers and our hosting partners. We run a network of SQL Servers, ensuring high availability and performance for our data-driven solutions. Our product FINIO is the award winning data hub that connects investment platforms, discretionary fund managers with software providers … financial technology solutions. This is a fully remote opportunity within the fintech sector. About you: • An expert in the design and build of high performance/high volume database architectures • Highly proficient in TSQL including Stored Procedures, Views, Triggers, and UDF's • Have in-depth knowledge of SQL Internal More ❯

leading investment platforms and back-office systems in the UK. Your Skills/Background: Design and Build of High Volume Database Architectures, TSQL, SQL, Performance Tuning. Who we are: We're Sprint Enterprise Technology – a small, high-impact fintech company, doing big things in the UK wealth management industry … private cloud, carefully managed by our own Infrastructure Engineers and our hosting partners. We run a network of SQL Servers, ensuring high availability and performance for our data-driven solutions. Our product FINIO is the award winning data hub that connects investment platforms, discretionary fund managers with software providers … financial technology solutions. This is a fully remote opportunity within the fintech sector. About you: • An expert in the design and build of high performance/high volume database architectures • Highly proficient in TSQL including Stored Procedures, Views, Triggers, and UDF's • Have in-depth knowledge of SQL Internal More ❯

leading investment platforms and back-office systems in the UK. Your Skills/Background: Design and Build of High Volume Database Architectures, TSQL, SQL, Performance Tuning. Who we are: We’re Sprint Enterprise Technology – a small, high-impact fintech company, doing big things in the UK wealth management industry … private cloud, carefully managed by our own Infrastructure Engineers and our hosting partners. We run a network of SQL Servers, ensuring high availability and performance for our data-driven solutions. Our product FINIO is the award winning data hub that connects investment platforms, discretionary fund managers with software providers … financial technology solutions. This is a fully remote opportunity within the fintech sector. About you: • An expert in the design and build of high performance/high volume database architectures • Highly proficient in TSQL including Stored Procedures, Views, Triggers, and UDF's • Have in-depth knowledge of SQL Internal More ❯

will be familiar with Terraform, DevOps practices, and the use of RMAN for Oracle database backups. This position involves database design, deployment, optimisation, automation, performance tuning, and incident resolution. Collaboration with developers, architects, and DevOps teams is essential to ensure that data infrastructure meets business needs and industry … databases. Integrate database management into CI/CD pipelines using tools like GitLab CI or GitHub Actions. Use CloudWatch or other tools to monitor performance, database health, and availability. Collaborate with DevOps, Security, and Engineering teams to align database strategies with overall platform architecture. Troubleshoot complex incidents and optimise … PostgreSQL. Experience with Aurora PostgreSQL or Oracle Goldengate. Proficiency in SQL, PL/SQL, and understanding of PostgreSQL functions and extensions. Skills in SQL performance optimisation including indexing strategies, execution plan analysis, and understanding database internals. Exposure to automation tools like Terraform, CloudFormation, Ansible, or scripting in Python/ More ❯

proactive Application Support Analyst to lead support and continuous improvement of enterprise applications across our organization. This role is critical in ensuring system stability, performance, and usability that support business operations. It is a hands-on role, acting as a technical expert and escalation point, bridging gaps between IT … point for complex incidents and application issues, driving resolution end-to-end. Collaborate with development teams, infrastructure, and vendors to diagnose and resolve bugs, performance issues, and outages. Lead application upgrades, patch management, UAT, and post-deployment support. Ensure data integrity, system reliability, and compliance with internal IT governance … tools like BeyondTrust is a plus. Scripting or automation skills (PowerShell, Python). Experience with cloud platforms (AWS, Azure) and SaaS environments. Monitoring and performance tuning experience. Experience with application rollouts, upgrades, patching, and post-deployment support. Knowledge of ITIL principles is a plus. Our Culture We are More ❯

scalable, resilient, and secure Work with cloud infrastructure, containerisation (Docker, Kubernetes), and CI/CD pipelines Take part in code reviews, architecture discussions, and performance tuning What We’re Looking For A Bachelor’s degree (or higher) in Computer Science or a closely related field 4+ years experience … building scalable, high-performance, real-time applications Strong programming skills in Go (Golang) Solid understanding of distributed systems , microservices architecture , and event-driven design Experience working with cloud platforms (e.g., AWS, GCP, Azure) Familiarity with monitoring, logging, and observability tools Bonus Points For Contributions to open-source projects Contributions … to an AI product ⚙️ Tech Stack: Golang, GCP, microservices, Kubernetes, Kafka, MongoDB, Prometheus If scalability, security, databases and performance is your thing, looking for high ownership and impact - this role is for you! Please apply with an up to date CV and we will be in touch with next More ❯

scalable, resilient, and secure Work with cloud infrastructure, containerisation (Docker, Kubernetes), and CI/CD pipelines Take part in code reviews, architecture discussions, and performance tuning What We’re Looking For A Bachelor’s degree (or higher) in Computer Science or a closely related field 4+ years experience … building scalable, high-performance, real-time applications Strong programming skills in Go (Golang) Solid understanding of distributed systems , microservices architecture , and event-driven design Experience working with cloud platforms (e.g., AWS, GCP, Azure) Familiarity with monitoring, logging, and observability tools Bonus Points For Contributions to open-source projects Contributions … to an AI product ⚙️ Tech Stack: Golang, GCP, microservices, Kubernetes, Kafka, MongoDB, Prometheus If scalability, security, databases and performance is your thing, looking for high ownership and impact - this role is for you! Please apply with an up to date CV and we will be in touch with next More ❯

functions Create and manage SSIS packages (2008+) Work with structured Scrum teams to deliver SQL components as part of wider clinical systems Participate in performance tuning and database refactoring Collaborate with business analysts and developers to meet evolving system requirements Key Skills & Experience: Advanced T-SQL and SQL More ❯

or similar Experienced with Azure DevOps Solid understanding of system integration principles and practices Desirable skills: Proficient in Microsoft SQL Server database administration and performance tuning Skilled in optimising SQL queries and ensuring database efficiency Familiarity with financial terminology and standard finance practices Hands-on experience with SQL More ❯