26 to 50 of 65 Performance Tuning Jobs in London

Development Lead

Hiring Organisation
Matchtech
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£1,000 - £1,100 per day
global development teams, fostering capability growth and collaboration. Continuous Improvement Champion modernisation through SAP BTP, Fiori, automation, and best-practice engineering techniques. Drive system performance tuning and post-go-live optimisation. Support knowledge sharing and continuous improvement across SAP development teams. Qualifications & Experience Essential Bachelor's or Master ...

Research Engineer

Hiring Organisation
Plasma
Location
London Area, United Kingdom
recommend whether to integrate, adapt, or design anew. Produce high-quality design specifications that engineers can implement: threat models, protocol sketches, interface boundaries, performance assumptions, and roll-out considerations. Build proofs-of-concept where useful to validate feasibility, performance, and integration risk (coding is important … protocol concerns , including (but not limited to): Zero-knowledge and applied cryptography Block propagation and networking Consensus and finality trade-offs Latency reduction and performance tuning Communicate trade-offs clearly across functions (Product, Research, Engineering, Platform): help align “where we want to go” with “how we get there ...

MongoDB-Site Reliability

Hiring Organisation
Barclays Bank PLC
Location
Tower Hamlets, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
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 … 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 ...

MongoDB-Site Reliability

Hiring Organisation
Barclays Bank Plc
Location
Poplar, Greater London, UK
Employment Type
Full-time
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 … 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 ...

Backend Engineer – POS Platforms Integration

Hiring Organisation
On
Location
London Area, United Kingdom
team—where technology meets the shop floor and every request matters. If you love crafting clean APIs, streamlining integrations, and optimizing real-world system performance, you’ll feel right at home. Your mission Backend & Integration Engineering: Design, build, and scale backend services that power POS integrations across ERP, eCom … architecture for global retail operations Build scalable integration patterns using message queues (Kafka, RabbitMQ) and serverless workflows Support observability through proactive monitoring, alerting, and performance tuning (e.g., NewRelic) Testing & Quality Automation: Ensure reliability through a robust automated testing stack: contract tests, load tests, and test data pipelines Collaborate ...

Senior Storage Engineer

Hiring Organisation
83zero Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550/day
Lead data migrations from Dell EMC VMAX and Commvault systems Deliver expert-level support and management across SAN and NAS platforms Oversee storage provisioning, performance tuning, and capacity planning Troubleshoot complex storage incidents in high-availability environments Support upgrades, lifecycle management, and transformation initiatives Collaborate with infrastructure, networking ...

C# Oracle PL/SQL Developer Role

Hiring Organisation
GCS
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £415/day Inside IR35
code logic and database interactions. Key Skills & Requirements: Strong proficiency in C#/.NET and Oracle PL/SQL, including complex query analysis and performance tuning. Solid understanding of application server and Oracle database structures. Python scripting skills for automation or data analysis (desirable). Familiarity with data lineage ...

Data Lineage Developer

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£415/day
code logic and database interactions. Key Skills & Requirements: Strong proficiency in C#/.NET and Oracle PL/SQL, including complex query analysis and performance tuning. Solid understanding of application server and Oracle database structures. Python scripting skills for automation or data analysis (desirable). Familiarity with data lineage ...

Storage Engineer

Hiring Organisation
Ncounter LTD
Location
City of London, London, United Kingdom
Employment Type
Permanent
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 ...

Sharepoint Engineer

Hiring Organisation
VIQU IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Sharepoint Engineer Act as the SharePoint SME, providing expert guidance across on-premise and Azure cloud environments. Lead platform upgrades, deployments, and performance optimization initiatives. Collaborate with IT teams, vendors, and business stakeholders to deliver solutions. Integrate SharePoint with SSO, MFA, and Azure services. Troubleshoot and resolve complex SharePoint … improvements to enhance platform resilience and performance. Key Requirements Proven experience as a SharePoint Engineer with on-premise and cloud (Azure) environments. Strong troubleshooting, performance tuning, and problem-solving skills. Experience with SSO, MFA, and Azure integrations desirable. Excellent stakeholder management and communication skills. Proactive, analytical, and able ...

Sharepoint Engineer

Hiring Organisation
VIQU IT Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Sharepoint Engineer Act as the SharePoint SME, providing expert guidance across on-premise and Azure cloud environments. Lead platform upgrades, deployments, and performance optimization initiatives. Collaborate with IT teams, vendors, and business stakeholders to deliver solutions. Integrate SharePoint with SSO, MFA, and Azure services. Troubleshoot and resolve complex SharePoint … improvements to enhance platform resilience and performance. Key Requirements Proven experience as a SharePoint Engineer with on-premise and cloud (Azure) environments. Strong troubleshooting, performance tuning, and problem-solving skills. Experience with SSO, MFA, and Azure integrations desirable. Excellent stakeholder management and communication skills. Proactive, analytical, and able ...

Sharepoint SME

Hiring Organisation
VIQU IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
business teams. Key Responsibilities Act as the SharePoint SME, providing expert guidance across on-premise and Azure cloud environments. Lead platform upgrades, deployments, and performance optimization initiatives. Collaborate with IT teams, vendors, and business stakeholders to deliver solutions. Integrate SharePoint with SSO, MFA, and Azure services. Troubleshoot and resolve … improvements to enhance platform resilience and performance. Key Requirements Proven experience as a SharePoint SME with on-premise and cloud (Azure) environments. Strong troubleshooting, performance tuning, and problem-solving skills. Experience with SSO, MFA, and Azure integrations desirable. Excellent stakeholder management and communication skills. Proactive, analytical, and able ...

Sharepoint Engineer

Hiring Organisation
VIQU IT
Location
Greater London, Farringdon Without, United Kingdom
Employment Type
Permanent
Sharepoint Engineer Act as the SharePoint SME, providing expert guidance across on-premise and Azure cloud environments. Lead platform upgrades, deployments, and performance optimization initiatives. Collaborate with IT teams, vendors, and business stakeholders to deliver solutions. Integrate SharePoint with SSO, MFA, and Azure services. Troubleshoot and resolve complex SharePoint … improvements to enhance platform resilience and performance. Key Requirements Proven experience as a SharePoint Engineer with on-premise and cloud (Azure) environments. Strong troubleshooting, performance tuning, and problem-solving skills. Experience with SSO, MFA, and Azure integrations desirable. Excellent stakeholder management and communication skills. Proactive, analytical, and able ...

.NET Developer

Hiring Organisation
Rise Technical Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£60,000 - £70,000 per annum
hosted systems. You will work with technologies such as C#, ASP.NET Core, RESTful APIs, SQL Server, and AWS services. You will also support deployments, performance tuning, and the improvement of backend architecture and development processes.The ideal candidate will have strong commercial experience in backend focused .NET development with … systems and APIs* Develop secure, scalable, and maintainable services using C# and ASP.NET Core* Work with SQL Server to optimise queries, stored procedures, and performance* Support AWS deployments and cloud environment configuration* Analyse issues in existing systems and provide robust technical solutions* Contribute to continuous improvement of tools, processes ...

NET Developer

Hiring Organisation
Rise Technical Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£60000 - £70000/annum
hosted systems. You will work with technologies such as C#, ASP.NET Core, RESTful APIs, SQL Server, and AWS services. You will also support deployments, performance tuning, and the improvement of backend architecture and development processes. The ideal candidate will have strong commercial experience in backend focused .NET development … systems and APIs * Develop secure, scalable, and maintainable services using C# and ASP.NET Core * Work with SQL Server to optimise queries, stored procedures, and performance * Support AWS deployments and cloud environment configuration * Analyse issues in existing systems and provide robust technical solutions * Contribute to continuous improvement of tools, processes ...

Java Developer

Hiring Organisation
Lynx Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
develop, and maintain Java-based solutions using the Spring Framework Collaborate with cross-functional teams to deliver high-quality software Contribute to solution design, performance tuning, and code reviews Requirements: Proven experience as a Java Developer (Spring Boot/Spring Framework) Degree in IT or a business-related ...

Backend Developer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£100,000 - £110,000 per annum
secure distributed systems for a growing customer base. Set engineering standards, mentor engineers, and collaborate across teams to deliver scalable features. Tackle challenges in performance, fault tolerance, and data-heavy workloads while influencing product strategy.Requirements: Strong foundations in algorithms, data structures, and distributed systems Experience building and operating large … scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/CD Proven leadership in technical strategy and mentoring What you need to do now If you're interested ...

Backend Developer

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Permanent
Salary
£100000 - £110000/annum £110,000 -£130,000
secure distributed systems for a growing customer base. Set engineering standards, mentor engineers, and collaborate across teams to deliver scalable features. Tackle challenges in performance, fault tolerance, and data-heavy workloads while influencing product strategy. Requirements: Strong foundations in algorithms, data structures, and distributed systems Experience building and operating … large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/CD Proven leadership in technical strategy and mentoring What you need ...

SC cleared Red Hat OpenStack Engineer

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£380 - £400 per day
Storage for persistent storage and Red Hat Enterprise Linux (RHEL) as the underlying operating system. Delivery: Performing advanced troubleshooting, patching, upgrades, capacity planning, and performance tuning of the OpenStack environment. Container Integration: Increasingly, this role involves enabling container platforms like Red Hat OpenShift … OpenStack virtual machines (VMs). Essential commercial experience Expert-level Red Hat Enterprise Linux (RHEL) administration, including networking, security, storage, and performance tuning. Deep knowledge of core services (Nova, Neutron, Cinder, Keystone, Glance, Swift Experience of Ansible for configuration management and orchestration, and scripting with Python or Go . ...

Databricks Data Engineer Azure Cloud & Performance Optimization

Hiring Organisation
Brightbox GRP Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £458 per day, Benefits remote
Databricks Data Engineer Azure Cloud & Performance Optimization £400-£458pd (Inside IR35) SC Clearance is Essential Remote Overview We are seeking a Databricks Data Engineer experienced in building high-quality data pipelines and optimizing large-scale workloads on the Databricks Data Intelligence Platform. The ideal candidate is strong in PySpark … Delta Lake, Azure services, workflow automation, and performance tuning. Key Responsibilities Build and maintain scalable batch and streaming pipelines using Databricks notebooks, Jobs, and Workflows. Optimize Spark and Delta Lake performance through cluster tuning, efficient configurations, AQE, and caching. Run performance tests and ensure workloads ...

GPS Deploy - Senior Implementation Specialist, Service Delivery

Hiring Organisation
Halian Technology Limited
Location
Central London, London, United Kingdom
Employment Type
Contract
About the Role: Were seeking an experienced Senior Implementation Specialist to join a global enterprise delivery team responsible for designing, building, and supporting high-performance SAN environments. Youll play a key role in end-to-end SAN architecture, configuration, and delivery, leveraging deep expertise in Brocade Gen6/Gen7 … compliance Provide 3rd Line operational support and lead migration/refresh projects (e.g. global SAN upgrades). Ensure best practices in fabric design, performance tuning, and lifecycle management. Collaborate with service delivery teams to meet operational and business objectives. Skills & Experience: Proven background in Brocade Gen6/Gen7 ...

IT Applications Analyst

Hiring Organisation
Larbey Evans
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 per annum
patching, and upgrades in coordination with change management procedures Manage user access controls, including provisioning, de-provisioning, and access reviews Monitor system health and performance; initiate health checks and proactively remediate issues Respond to and resolve incidents and service requests in line with SLAs Provide break/fix troubleshooting … tools Understanding of access management, patch management, and vulnerability remediation processes Familiarity with ITIL practices (Incident, Problem, Change, and Configuration Management) Exposure to application performance tuning, cloud platforms, or scripting (e.g., PowerShell, Python ...

Senior Network Security Engineer - WAF

Hiring Organisation
Revybe IT Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £500 per day
posture, drive improvements across our network security stack, and support key projects focused on cloud, firewall, and WAF optimisation. Key Responsibilities Lead the configuration, tuning, and optimisation of Barracuda WAF platforms Support and enhance Azure networking components including VNets, NSGs, firewalls, load balancers, and routing Work with next-generation … network security, traffic flows, segmentation, and application security Understanding of OWASP, threat mitigation, and secure configuration principles Experience in incident response, troubleshooting, and performance tuning Excellent communication and documentation skills Click apply to be considered. ...

Senior Full Stack Developer

Hiring Organisation
Meraki Talent Limited
Location
North London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £80,000 per annum
core products – ASP.Net Core, C#, React.js Knowledge of HTML/CSS/JavaScript/Typescript Deployment and support of solutions into Azure Experience of performance tuning when dealing with large data sets Strong stakeholder management Experience taking a product from inception through to completion. Please note: You must ...

Infrastructure & Application Engineer

Hiring Organisation
Nextech
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £60,000 per annum
moving change environments. What You'll Do Lead and support application migrations to modern platforms (cloud & on-prem) Own application lifecycle - deployment, configuration, upgrades & performance tuning Troubleshoot complex issues across servers, networks, databases & integrations Enhance monitoring, automation and resilience across core services Collaborate with vendors and internal teams ...