251 to 275 of 394 Performance Tuning Jobs in England

based services to surface AI insights and automation directly in the UI Creating reusable components and libraries that accelerate development across the team Keeping quality high through modern testing, performance tuning, and CI/CD practices Working closely with product, UX, AI engineering, and DevOps teams to align front-end features with real user needs Taking part in More ❯

code reviews, ensure testing best practices (manual & automated) are followed. Collaborate with internal stakeholders to deliver effective, efficient systems. Support and mentor junior developers. Contribute to infrastructure design and performance tuning on AWS. Deliver robust, scalable solutions aligned with commercial and user needs. Skills & Experience Essential: 5+ years’ commercial experience with Laravel . 5+ years’ experience with React More ❯

UX best practices. Hands-on experience with CI/CD, automated testing (JUnit, Espresso), and DevOps workflows. Familiarity with Google Play Console, crash analytics, A/B testing, and performance tuning. Knowledge of mobile security, data encryption, and compliance with Play Store policies. Agile mindset with experience in Scrum or similar methodologies. Please apply with your up-to-date More ❯

UX best practices. Hands-on experience with CI/CD, automated testing (JUnit, Espresso), and DevOps workflows. Familiarity with Google Play Console, crash analytics, A/B testing, and performance tuning. Knowledge of mobile security, data encryption, and compliance with Play Store policies. Agile mindset with experience in Scrum or similar methodologies. Please apply with your up-to-date More ❯

robust, scalable software in Python, with opportunities to contribute to components in C++ or Rust. Working across the full lifecycle – from idea generation and prototyping to production deployment and performance tuning. Leveraging statistical methods, data analysis, and modern compute infrastructure to improve research and execution workflows. What you need Strong programming background, primarily in Python (NumPy, Pandas, SciPy, etc. More ❯

robust, scalable software in Python, with opportunities to contribute to components in C++ or Rust. Working across the full lifecycle – from idea generation and prototyping to production deployment and performance tuning. Leveraging statistical methods, data analysis, and modern compute infrastructure to improve research and execution workflows. What you need Strong programming background, primarily in Python (NumPy, Pandas, SciPy, etc. More ❯

UX best practices. Hands-on experience with CI/CD , automated testing ( JUnit , Espresso ), and DevOps workflows. Familiarity with Google Play Console , crash analytics, A/B testing, and performance tuning. Knowledge of mobile security , data encryption, and compliance with Play Store policies. Agile mindset with experience in Scrum or similar methodologies. If you would like immediate consideration, please More ❯

UX best practices. Hands-on experience with CI/CD , automated testing ( JUnit , Espresso ), and DevOps workflows. Familiarity with Google Play Console , crash analytics, A/B testing, and performance tuning. Knowledge of mobile security , data encryption, and compliance with Play Store policies. Agile mindset with experience in Scrum or similar methodologies. If you would like immediate consideration, please More ❯

an impact, this could be the perfect next step for you. What You'll Be Doing Maintain & Improve Systems: Keep production environments running smoothly with proactive maintenance, patching and performance tuning. Automate & Optimise: Use tools like Terraform, Ansible and AWS to manage infrastructure and enhance automation. Collaborate & Support: Work hand-in-hand with cross-functional teams and help develop More ❯

to ensure data availability, accessibility, and usability across the organisation. * Implement data quality checks, validation routines, and monitoring processes to maintain data integrity and reliability. * Optimise data workflows for performance, cost-efficiency, and maintainability using tools such as Azure Data Factory, AWS Data Pipeline, Databricks, or Apache Spark . * Integrate and prepare data for Tableau dashboards and reports , ensuring … optimal performance and alignment with business needs. * Collaborate with visualisation teams to develop, maintain, and enhance Tableau data sources (including Extracts, Hyper files, and live connections) and to support self-service analytics. * Ensure compliance with data governance, security, and privacy policies , maintaining adherence to organisational standards. * Document data architecture, pipelines, and Tableau data models to promote transparency, maintainability, and … knowledge sharing. * Contribute to the development of a modern, scalable data platform that supports both real-time and batch data processing. * Champion best practices in Tableau data design , including performance tuning, data source optimisation, and dashboard scalability. Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have More ❯

seeking an experienced KDB+ Developer with strong hands-on expertise in KDB+/q and time-series data processing. The ideal candidate will have demonstrated experience working with high-performance, Real Time data systems within financial services preferably in environments such as trading, risk, or market data platforms. Experience in KDB is the primary qualification for this role.The role … research, and time-series data storage and retrieve. Key Responsibilities Design, develop, and maintain KDB+/q applications for Real Time and historical data processing. Build and optimize high-performance, in-memory, time-series databases to support trading, analytics, and risk systems. Implement data ingestion pipelines for market data, trade data, quotes, and other time-series feeds . Develop … trading desks and quantitative teams. Collaborate with quants, traders, data engineers, and technology teams to deliver low-latency solutions . Trouble shoot, optimize, and improve existing KDB+ systems for performance, memory usage, parallelization, and scalability . Work with Real Time streaming systems and support high-frequency trading (HFT), surveillance, P&L reporting, and analytics platforms . Support the adoption More ❯

seeking an experienced KDB+ Developer with strong hands-on expertise in KDB+/q and time-series data processing. The ideal candidate will have demonstrated experience working with high-performance, Real Time data systems within financial services preferably in environments such as trading, risk, or market data platforms. Experience in KDB is the primary qualification for this role.The role … research, and time-series data storage and retrieve. Key Responsibilities Design, develop, and maintain KDB+/q applications for Real Time and historical data processing. Build and optimize high-performance, in-memory, time-series databases to support trading, analytics, and risk systems. Implement data ingestion pipelines for market data, trade data, quotes, and other time-series feeds . Develop … trading desks and quantitative teams. Collaborate with quants, traders, data engineers, and technology teams to deliver low-latency solutions . Trouble shoot, optimize, and improve existing KDB+ systems for performance, memory usage, parallelization, and scalability . Work with Real Time streaming systems and support high-frequency trading (HFT), surveillance, P&L reporting, and analytics platforms . Support the adoption More ❯

Join our team as a MongoDB Site Reliability Engineer, where you'll be at the forefront of designing and maintaining robust, high-performance systems that power critical financial services. In this dynamic and fast-paced environment, your role will be essential to ensuring our infrastructure remains resilient, secure, and scalable. You’ll work on automating operations, enhancing system observability … as a MongoDB Site Reliability Engineer, you should have experience with:Working in Site Reliability Engineering, DevOps, and MongoDB administration in financial services.Using MongoDB features like replicaset, sharding, backups, performance tuning, and shell scripting.Writing scripts in Python or Bash to automate tasks and reduce manual work. Some other highly valued skills may include:Using Percona, ClusterControl, CI/… CD tools, and automation platforms like Ansible or Chef.Monitoring systems with Prometheus, Grafana, ELK stack, and running containers with Kubernetes.Building APIs with FastAPI and supporting scalable, high-performance systems. You may be assessed on the key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen, strategic thinking and digital and technology More ❯

Join our team as a MongoDB Site Reliability Engineer, where you'll be at the forefront of designing and maintaining robust, high-performance systems that power critical financial services. In this dynamic and fast-paced environment, your role will be essential to ensuring our infrastructure remains resilient, secure, and scalable. You’ll work on automating operations, enhancing system observability … as a MongoDB Site Reliability Engineer, you should have experience with:Working in Site Reliability Engineering, DevOps, and MongoDB administration in financial services.Using MongoDB features like replicaset, sharding, backups, performance tuning, and shell scripting.Writing scripts in Python or Bash to automate tasks and reduce manual work. Some other highly valued skills may include:Using Percona, ClusterControl, CI/… CD tools, and automation platforms like Ansible or Chef.Monitoring systems with Prometheus, Grafana, ELK stack, and running containers with Kubernetes.Building APIs with FastAPI and supporting scalable, high-performance systems. You may be assessed on the key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen, strategic thinking and digital and technology More ❯

Join our team as a MongoDB Site Reliability Engineer, where you'll be at the forefront of designing and maintaining robust, high-performance systems that power critical financial services. In this dynamic and fast-paced environment, your role will be essential to ensuring our infrastructure remains resilient, secure, and scalable. You’ll work on automating operations, enhancing system observability … a MongoDB Site Reliability Engineer, you should have experience with: Working in Site Reliability Engineering, DevOps, and MongoDB administration in financial services. Using MongoDB features like replicaset, sharding, backups, performance tuning, and shell scripting. Writing scripts in Python or Bash to automate tasks and reduce manual work. Some other highly valued skills may include: Using Percona, ClusterControl, CI … CD tools, and automation platforms like Ansible or Chef. Monitoring systems with Prometheus, Grafana, ELK stack, and running containers with Kubernetes. Building APIs with FastAPI and supporting scalable, high-performance systems. You may be assessed on the key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen, strategic thinking and digital More ❯

Join our team as a MongoDB Site Reliability Engineer, where you'll be at the forefront of designing and maintaining robust, high-performance systems that power critical financial services. In this dynamic and fast-paced environment, your role will be essential to ensuring our infrastructure remains resilient, secure, and scalable. You'll work on automating operations, enhancing system observability … a MongoDB Site Reliability Engineer, you should have experience with: Working in Site Reliability Engineering, DevOps, and MongoDB administration in financial services. Using MongoDB features like replicaset, sharding, backups, performance tuning, and shell scripting. Writing scripts in Python or Bash to automate tasks and reduce manual work. Some other highly valued skills may include: Using Percona, ClusterControl, CI … CD tools, and automation platforms like Ansible or Chef. Monitoring systems with Prometheus, Grafana, ELK stack, and running containers with Kubernetes. Building APIs with FastAPI and supporting scalable, high-performance systems. You may be assessed on the key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen, strategic thinking and digital More ❯

integration between computation, data, and science. You should have Deep experience building and scaling backend systems and distributed applications . Strong coding skills in Python , with an understanding of performance tuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . Proficiency with databases — schema design, performance optimization, and analytics. Familiarity with REST APIs … security best practices. A disciplined engineering mindset — you think about reliability, maintainability, and long-term scalability. Nice-to-haves Experience with MLOps and model-serving infrastructure. Background in high-performance computing or large-scale scientific workloads. Expertise in data pipeline architecture and real-time streaming systems. Knowledge of scientific or biological computing environments . This is a rare opportunity More ❯

integration between computation, data, and science. You should have Deep experience building and scaling backend systems and distributed applications . Strong coding skills in Python , with an understanding of performance tuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . Proficiency with databases — schema design, performance optimization, and analytics. Familiarity with REST APIs … security best practices. A disciplined engineering mindset — you think about reliability, maintainability, and long-term scalability. Nice-to-haves Experience with MLOps and model-serving infrastructure. Background in high-performance computing or large-scale scientific workloads. Expertise in data pipeline architecture and real-time streaming systems. Knowledge of scientific or biological computing environments . This is a rare opportunity More ❯

Inside IR35 Role Overview We are looking for a highly skilled Netscaler SME/Citrix Expert to support a major banking client in designing, implementing, and managing secure, high-performance Citrix and Netscaler environments. The ideal candidate will be responsible for delivering stable, scalable, and secure application delivery solutions within a complex banking infrastructure. Key Responsibilities Design, configure, and … maintain Citrix Netscaler (ADC/Gateway) infrastructure for secure application delivery. Act as the subject matter expert for Citrix Virtual Apps & Desktops (XenApp/XenDesktop). Troubleshoot performance issues, latency, and connectivity problems across Citrix/Netscaler environments. Optimize Netscaler load-balancing, traffic management, high availability, and SSL offloading. Implement security policies, multi-factor authentication, and access controls for … integration, SSL certificates, and application delivery. Good knowledge of networking (TCP/IP, DNS, VPNs, routing, firewalls). Experience with security and compliance in financial institutions. Strong troubleshooting and performance tuning skills. Excellent communication and stakeholder management abilities. Nice-to-Have Citrix certifications (CCA-V, CCP-V, CCP-N). Experience with F5, Azure, VMware, or other application More ❯

applications. Act as an escalation point for complex technical issues, providing hands-on problem-solving where required. Collaborate with IT, Change, and Underwriting teams to maintain data integrity, optimise performance, and support system enhancements. Identify and implement process improvements, documentation standards, and automation opportunities to improve efficiency. Requirements: Proven experience in an Application Support or Support Management role within … the Insurance sector Strong technical skills in SQL Server, including complex query writing, troubleshooting, and performance tuning Demonstrated experience supporting Policy Administration Systems or similar core insurance platforms Strong problem-solving, stakeholder engagement, and communication skills Experience leading small technical teams and providing hands-on escalation support in a fast-paced environment More ❯

competitive + excellent bonus + benefits International Capital Markets firm is scaling its London Equities platform and is hiring a Senior TechOps Associate to drive platform reliability, low-latency performance, and controlled change across OMS/EMS, eTrading/algo, market data, and exchange connectivity. You will sit close to the desk and act as the go-to owner …/post-mortems. Safer, faster releases (blue/green, canary, feature flags) in partnership with Trading, Quant, and Engineering. Mature observability (logs/metrics/traces), capacity planning, and performance tuning for low-latency flows. Strong production hygiene and controls aligned to MiFID II/MAR/best-ex. Leadership of the London on-call rota and contribution … Splunk/Geneos. Practical understanding of market microstructure, exchange connectivity, and TCA/controls. Composed, commercially aware communicator with traders and senior leadership. Package & set-up Competitive base + performance bonus, benefits, and flexible hybrid working. A clear runway to platform ownership and team leadership. London HQ; hybrid model. Nice to haves Low-latency tuning experience. Experience with More ❯

Senior TechOps, Equities Platform London, Hybrid International Capital Markets firm is scaling its London Equities platform and is hiring a Senior TechOps Associate to drive platform reliability, low-latency performance, and controlled change across OMS/EMS, eTrading/algo, market data, and exchange connectivity. You will sit close to the desk and act as the go-to owner …/post-mortems. Safer, faster releases (blue/green, canary, feature flags) in partnership with Trading, Quant, and Engineering. Mature observability (logs/metrics/traces), capacity planning, and performance tuning for low-latency flows. Strong production hygiene and controls aligned to MiFID II/MAR/best-ex. Leadership of the London on-call rota and contribution … Splunk/Geneos. Practical understanding of market microstructure, exchange connectivity, and TCA/controls. Composed, commercially aware communicator with traders and senior leadership. Package & set-up Competitive base + performance bonus, benefits, and flexible hybrid working. A clear runway to platform ownership and team leadership. London HQ; hybrid model. Nice to haves Low-latency tuning experience. Experience with More ❯

to Work With: Modern microservices architecture powering high-volume systems Containerisation using Docker and Kubernetes for scalable deployments Cloud-native platforms and automated CI/CD pipelines Real-time performance engineering and distributed computing challenges Secure development practices with a focus on system architecture and compliance Key Responsibilities: Advocating TDD and solid development practices Providing technical leadership and peer … provide support What You’ll Need: Experience working on large commercial systems Strong skills in C#, .NET Core, and Web APIs Database experience, working with both SQL and NoSQL Performance tuning and optimisation expertise Contact Philip Boltt at Lorien Global for more information. More ❯

and experienced DB2 Database Administrator (DBA) with strong expertise in IBM DB2 on Linux . The ideal candidate will be responsible for day-to-day operational support, issue resolution, performance tuning, and incident management of DB2 databases in a 24x7 production environment. The candidate should have a deep understanding of Linux environments, DB2 internals, and database troubleshooting. Key … Responsibilities: Provide L2 support for IBM DB2 databases running on Linux platforms . Monitor database performance and proactively identify and resolve issues. Manage database incidents, service requests, and change management processes. Perform regular database health checks, backup/recovery, reorgs, and runstats. Work with development and application teams for query optimization and tuning. Analyze and resolve space, locking, and … connectivity-related issues. Participate in database maintenance activities such as patching, upgrades, and migrations. Collaborate with infrastructure and storage teams for performance and capacity planning. Maintain documentation of DB configurations, procedures, and troubleshooting steps. Ensure adherence to SLAs, security policies, and compliance standards. Required Skills: 5–8 years of hands-on experience as a DBA supporting IBM DB2 databases More ❯

and experienced DB2 Database Administrator (DBA) with strong expertise in IBM DB2 on Linux . The ideal candidate will be responsible for day-to-day operational support, issue resolution, performance tuning, and incident management of DB2 databases in a 24x7 production environment. The candidate should have a deep understanding of Linux environments, DB2 internals, and database troubleshooting. Key … Responsibilities: Provide L2 support for IBM DB2 databases running on Linux platforms . Monitor database performance and proactively identify and resolve issues. Manage database incidents, service requests, and change management processes. Perform regular database health checks, backup/recovery, reorgs, and runstats. Work with development and application teams for query optimization and tuning. Analyze and resolve space, locking, and … connectivity-related issues. Participate in database maintenance activities such as patching, upgrades, and migrations. Collaborate with infrastructure and storage teams for performance and capacity planning. Maintain documentation of DB configurations, procedures, and troubleshooting steps. Ensure adherence to SLAs, security policies, and compliance standards. Required Skills: 5–8 years of hands-on experience as a DBA supporting IBM DB2 databases More ❯