151 to 175 of 206 Performance Tuning Jobs in England

Senior Infrastructure Engineer

Hiring Organisation
IT Talent Solutions
Location
Milton Keynes, Buckinghamshire, United Kingdom
Employment Type
Permanent
Salary
£55000 - £70000/annum Excellent benefits
environments across Azure, VMware , and on-prem systems Improve and maintain LAN/WAN, networking, and core security infrastructure Provide expert-level troubleshooting and performance tuning Collaborate with cross-functional teams and senior stakeholders Ensure robust security, disaster recovery, and compliance standards YOU 5+ years of experience ...

Data Migration Engineer

Hiring Organisation
JAM Recruitment Ltd
Location
Rochester, Kent, South East, United Kingdom
Employment Type
Contract
Contract Rate
£41.00 - £42.11 per hour
Skills: Strong experience with Oracle SQL and PL/SQL Solid understanding of Oracle ERP database architecture Experience with joins, subqueries, analytic functions, and performance tuning of data extractions Knowledge of ETL techniques and methods Experience in Oracle 11i data structures or Oracle Cloud environments Previous experience ...

Infrastructure Engineer (Virtualisation)

Hiring Organisation
KBC Technologies UK LTD
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
ESXi/vCenter or Hyper-V). Background in infrastructure engineering or platform operations in enterprise environments. Expertise in platform upgrades, patching, troubleshooting, and performance tuning . Solid understanding of server hardware, storage integration, and enterprise networking . Knowledge of ITIL processes (incident, problem, change). Desirable Skills ...

Azure Platform Engineer

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600.0 - £690.0 per day + up to £690pd (Inside IR35)
integrating mobile applications with cloud-native backends Knowledge of CI/CD pipelines for containerized applications Familiarity with zero-trust architecture principles Background in performance tuning or cost-optimised cloud design If you're interested in this role, click 'apply now' to forward an up-to-date copy ...

Integration Engineer

Hiring Organisation
JAM Recruitment Ltd
Location
Rochester, Kent, South East, United Kingdom
Employment Type
Contract
Contract Rate
£40.00 - £42.00 per hour
Solid understanding of Oracle ERP database architecture and/or Oracle Cloud environments (EPM/Fusion) Experience with joins, subqueries, analytic functions, and performance tuning of data extractions Knowledge of ETL techniques and methods Powershell or other scripting/automation tools Experience in Oracle 11i data structures ...

Senior Unity Programmer (Localisation)

Hiring Organisation
Pixel Toys Ltd
Location
Leamington Spa, Warwickshire, West Midlands, United Kingdom
Employment Type
Permanent
system development. You will spend your time implementing and optimising game systems alongside Artists and Designers, while also diving deep into profiling and performance tuning to resolve critical bottlenecks. By creating thorough technical designs and conducting insightful code reviews, you will ensure our codebase remains stable, secure ...

C Developer

Hiring Organisation
Harrington Starr
Location
London Area, United Kingdom
Software Engineer – Low‐Latency Trading Contract - OUTSIDE IR35 Rate - Dependent on skills London - Hybrid working 50% in office. You'll be joining a high‐performance trading technology firm. Helping to building ultra‐low‐latency systems powering global electronic markets. Working alongside world‐class engineers solving complex challenges across C++ … Linux, networking, and hardware‐accelerated trading pipelines. What You'll Do Build and optimise high‐performance, low‐latency C++ applications Develop real‐time systems interacting directly with global exchanges Work closely with FPGA, network, and infrastructure teams Improve latency, throughput, and reliability across mission‐critical systems Contribute to performance ...

Rust Developer

Hiring Organisation
Intec Select Ltd
Location
London, Aldgate, United Kingdom
Employment Type
Contract
Contract Rate
£800 - £850/day
Contract | £850/day | Outside IR35 Role Overview: A leading technology-driven trading firm is looking for a Rust Developer to join their high-performance engineering team. You will play a key role in designing, building, and maintaining low-latency, mission-critical trading systems. The role offers the opportunity … This is a fast-paced, intellectually challenging environment where your work has a visible impact on the business. Key Responsibilities: Develop and maintain high-performance trading applications using Rust. Write clean, maintainable, and well-tested code. Collaborate closely with engineers, quants, and operations teams to deliver reliable solutions. Contribute ...

Applications Operations Analyst

Hiring Organisation
Ryder Reid Legal
Location
London Area, United Kingdom
experienced Applications Operations Analyst to join its London office. This is a fantastic opportunity to play a key role in maintaining and improving the performance, security, and reliability of enterprise applications across a dynamic and fast-paced professional services environment. Reporting to the Manager of Applications Operations, the successful … also contributing to process improvement, documentation, and integration stability. The role involves close collaboration with infrastructure, security, and business teams to ensure seamless application performance and user experience. Key Responsibilities: Perform system maintenance, patching, and upgrades in line with change management procedures Monitor application health and performance, proactively ...

Senior SQL DBA

Hiring Organisation
DMR Personnel Ltd
Location
NR2, Norwich, Norfolk, United Kingdom
Employment Type
Permanent
Salary
£50000 - £57000/annum Plus excellent benefits
database-related tasks. A key part of the role will involve identifying and resolving non-performant SQL queries, ensuring smooth operations and high performance across our systems. You will contribute to maintaining a reliable and secure SQL Server estate, ensuring it operates efficiently and securely, and the role will … fulfil the requirements of both internal and external customers. This is a fantastic opportunity for someone with a passion for databases and performance tuning to make a tangible impact. The ideal candidate will possess strong technical skills within a scalable environment and demonstrate the ability to design, implement ...

Senior SRE (Java)

Hiring Organisation
Morgan McKinley
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
traditional, infrastructure-heavy SRE; they need a Senior Java Developer who has recently transitioned into the SRE space. My client operates high-performance trading platforms for over 340,000 global users. They need an engineer who can "get under the hood" of a Java codebase to build, debug … team to champion reliability patterns. Complex Challenges: You'll work with high-throughput, low-latency trading operations that demand zero downtime, focusing on JVM performance tuning and message-driven systems. The Essentials The Foundation: 5+ years of Java development experience with a deep understanding of JVM internals. ...

Azure Data Architect (Railway/ Transportation)

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
major system programmes: Power Apps and .NET. What You'll Need to Succeed Advanced expertise in Azure and Azure SQL, including solution design, performance tuning, and security click apply for full job details ...

Engineering Manager, Secure Identity & Auth Platform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
mentoring developers and managing a critical authentication system built with Go and Python on AWS. A strong background in distributed systems, security protocols, and performance tuning is essential. The company offers a flexible hybrid working model and opportunities for continuous professional development. #J-18808-Ljbffr ...

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 ...

Integration Consultant webMethods, Boomi

Hiring Organisation
Smart Sourcer Limited
Location
High Wycombe, Buckinghamshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
service scaffolding, mapping, testing, and runbooks. Implement CI/CD, automated testing, and modern release strategies (blue/green, canary). Strengthen operations with performance tuning, resiliency patterns, and observability dashboards. Govern APIs (authN/Z, rate limiting, threat protection) and manage lifecycle. What You Bring: 35+ years ...

Backend Support Engineer

Hiring Organisation
Valiant Finance
Location
City of London, London, United Kingdom
Proven experience in a technical support, site reliability, or escalations engineering role. Proven experience integrating with multiple external APIs. Experience with database design and performance tuning, particularly with PostgreSQL. Experience designing and maintaining infrastructure with AWS, GCP, or Heroku. Experience with testing frameworks like Rspec. Experience with high ...

Infrastructure Engineer - DV Cleared

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
Farnborough, Hampshire, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £700/day
requires strong VMware expertise and an active MOD DV clearance . You will be responsible for maintaining and optimising virtual infrastructure, ensuring high availability, performance, and security across critical systems. Key Responsibilities Administer and manage VMware vSphere environments, including ESXi hosts, vCenter, clusters, and resource pools Design, deploy … segmentation Support and maintain VMware Horizon VDI environments (desirable) Develop and maintain automation using PowerCLI , templates, and provisioning workflows Monitor and optimise system performance: Troubleshoot host and VM issues Analyse logs and tune workloads Implement and support backup and disaster recovery solutions: Tools such as Veeam, SRM, or Zerto ...

Storage SAN Architect

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
Sheffield, South Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£540/day inside ir35
within the banking sector. Key Responsibilities: Define storage architecture strategy for OpenShift clusters and workloads, incorporating Pure Storage best practices. Advise on storage provisioning, performance tuning, and capacity planning for Pure Storage arrays. Serve as the go-to expert for storage-related issues and escalations, including Pure Storage … Engineers and OpenShift Architects to integrate Pure Storage solutions with compute and networking layers. Ensure compatibility with containerized workloads and persistent storage requirements. Conduct performance assessments and recommend improvements for Pure Storage systems. Required Skills & Qualifications: Extensive experience in enterprise storage technologies with a strong focus on Pure Storage ...

Golang Developer

Hiring Organisation
Intelligenz IT
Location
London Area, United Kingdom
Skills & Experience: 5+ years of professional experience with Golang Experience with gRPC, goroutines, and channels Hands-on knowledge of PostgreSQL performance tuning Familiarity with GORM, Prometheus, Grafana, and Kafka Exposure to Ruby on Rails, JavaScript, and TypeScript Practical experience applying design patterns such as Singleton and Factory DevOps … Responsibilities: Design, develop, and maintain scalable microservices using Golang Optimize PostgreSQL databases through advanced indexing and partitioning Ensure application reliability through robust testing and performance monitoring using Prometheus and Grafana Participate in system architecture discussions, especially in migrating monoliths to microservices Work with Kafka and asynchronous communication systems Manage ...

Founding Product Engineer- Build the future of Human-Centric AI

Hiring Organisation
Albert Bow
Location
City of London, London, United Kingdom
rollout. Develop background processing systems, task queues, and agent orchestration. Work hands‐on with LLM integrations, RAG pipelines, and AI‐driven systems. Enhance system performance across SQL queries, APIs, and distributed jobs. Build and operate cloud infrastructure on GCP. Lead debugging and incident resolution in a high‐usage environment. … Looking For 5+ years of production backend engineering experience. Deep expertise with Python, Django, and Django REST Framework. Strong SQL knowledge and performance tuning experience. Practical experience with Celery or background job systems. Exposure to LLMs, AI infrastructure, or agentic systems. Experience building reliable, observable distributed systems. Cloud ...

Senior VMware Engineer - VCF / NSX-T

Hiring Organisation
Henderson Scott
Location
North West, United Kingdom
Employment Type
Contract
Edge nodes, T0/VRF, DFW, routing) Administer and optimise vSphere/ESXi clusters Support vSAN and storage integration VM lifecycle management (Linux & Windows) Performance tuning and capacity planning Advanced troubleshooting and root cause analysis Work alongside infrastructure, security and networking teams Required Experience: Strong enterprise VMware engineering ...

Sharepoint Developer & Administrator

Hiring Organisation
DGH Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
Graph. - Solid experience with C# and .NET Framework for backend and integration development. - Hands-on experience administering SharePoint on-prem environments, including patching, upgrades, performance tuning, and troubleshooting. Sharepoint Developer & Administrator In accordance with the Employment Agencies and Employment Businesses Regulations 2003, this position is advertised based upon ...

Microsoft Endpoint Configuration Manager (MECM/SCCM)

Hiring Organisation
Gazelle Global Consulting Ltd
Location
London, United Kingdom
Employment Type
Contract
Active Directory, Azure, Office 365, and virtualization technologies to ensure smooth end-user computing operations. Design and execute MECM infrastructure maintenance tasks, including backups, performance tuning, and system health checks. Develop and maintain documentation related to building processes, deployment standards, and operational procedures. Contribute to problem management ...

Senior Storage Engineer-NetApp-Enterprise Storage- Higher Education

Hiring Organisation
Morson Edge
Location
Luton, Bedfordshire, South East, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£450 - 465 per day
LUNs, qtrees, NFS, CIFS/SMB, storage virtual machines (SVMs), snapshots and snapMirror. • Experience of designing and support enterprise storage solutions, capacity planning and performance tuning. • Experience of working with High availability (HA pairs, clustering) • Knowledge of Firmware and ONTAP upgrades • Experience of storage migrations and data lifecycle management. ...

Certified Pega Lead Decisioning Architect

Hiring Organisation
Accenture
Location
Birmingham, West Midlands, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
People, Client Value Creation, One Global Network, Respect for the Individual and Integrity. Year after year, Accenture is recognized worldwide not just for business performance but for inclusion and diversity too. “Across the globe, one thing is universally true of the people of Accenture: We care deeply about what … strategies. Ensure compliance with industry standards and Pega architecture guidelines. Collaborate with cross-functional teams to deliver scalable, integrated solutions. Oversee code reviews, performance tuning, and optimisation of decisioning applications. Support production deployment, testing, and solution maintenance. Stay up to date on evolving Pega decisioning capabilities and best ...