126 to 150 of 206 Performance Tuning Jobs in England

Senior Sharepoint Developer

Hiring Organisation
Larbey Evans
Location
City Of London, England, United Kingdom
CSS3) Experience integrating SharePoint solutions using REST APIs, Microsoft Graph, C#, and .NET Hands-on management of on-prem SharePoint environments, including patching, upgrades, performance tuning, and troubleshooting Experience with Business Connectivity Services (BCS), External Content Types (ECTs), and SQL Server design and optimisation ...

Ruby Developer

Hiring Organisation
Proactive Appointments
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 80,000 Annual
love to hear from you. Key Skills 4+ years' experience with Ruby on Rails Strong understanding of OOP & Rails architecture Extensive experience with PostgreSQL (performance tuning, complex queries) Background job processing with Sidekiq & Redis Expertise in RESTful APIs , JSON, JWT, SSO Experience with AWS & Docker Production system support ...

Senior Developer / Architect

Hiring Organisation
Young's Employment Services Ltd
Location
West London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£95,000
DAPR pub/sub, saga orchestration, transactional outbox DDD fundamentals bounded contexts, aggregates, domain events, CQRS SQL Server schema design, EF Core migrations, query performance tuning This role is perfect for those who thrive in small, flat-structured teams and collaborative environments where every contribution makes a difference. ...

Database Engineer (Oracle, PostgreSQL)

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 - £650 per day
determination and ability to automate database build, deployment, configuration, and operational tasks using Ansible or equivalent automation and configuration-management tools. Solid troubleshooting and performance tuning experience. Proficient in containerisation and platform technologies, including containers and OpenShift, with a solid understanding of how PostgreSQL workloads Collaborate closely with ...

Principal Engineer -Database Platform

Hiring Organisation
PURVIEW
Location
Sheffield, England, United Kingdom
distributed SQL), deployed on IaaS or as part of DBaaS Deep understanding of database infrastructure capabilities and consumer use cases Experience with infrastructure components, performance tuning, and capacity planning Hands-on experience with microservices, software development, infrastructure automation, API development, and basic system design Strong knowledge of Site ...

Senior RPG Developer

Hiring Organisation
Moorepay
Location
Pendlebury, Swinton, Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
CLLE. Skilled in using embedded SQL within RPG. Solid understanding of DB2/400 database design and DDS. Experience in system troubleshooting, debugging, and performance tuning. Familiarity with change management tools (e.g., TurnOver, Aldon). Awareness of compliance, security, and data governance standards. Knowledge of APIs (REST/SOAP ...

Openshift Engineer

Hiring Organisation
Teksystems
Location
Humber, Devon, UK
Employment Type
Full-time
. Overview of Responsibilities: Build, maintain, and optimize OpenShift clusters. Automate deployments and environment provisioning using Ansible and Terraform. Support platform reliability, security, and performance tuning. Work with cross-functional teams to deliver scalable container-based solutions. This is a hybrid role based in Yorkshire 2-3 days ...

Openshift Engineer

Hiring Organisation
Teksystems
Location
Yorkshire, United Kingdom
Employment Type
Contract, Work From Home
. Overview of Responsibilities: Build, maintain, and optimize OpenShift clusters. Automate deployments and environment provisioning using Ansible and Terraform. Support platform reliability, security, and performance tuning. Work with cross-functional teams to deliver scalable container-based solutions. This is a hybrid role based in Yorkshire 2-3 days ...

Platform Engineer | Exchange Connectivity - Remote

Hiring Organisation
VERTECH GROUP (UK) LTD
Location
City of London, London, United Kingdom
Employment Type
Permanent
exchanges Working with APIs, WebSockets and potentially FIX protocols Ensuring high availability and reliability across trading systems Collaborating with engineering and trading teams on performance and scalability Troubleshooting connectivity, latency and production issues Essential: Strong platform/infrastructure engineering background Experience integrating with exchanges (crypto or traditional) Understanding … application-level connectivity Nice to have: Experience in trading, fintech or crypto environments Exposure to low latency systems Knowledge of networking and system performance tuning Tremendous opportunity to work on systems where reliability and real-time performance actually matter, rather than just internal tooling! Youll be part ...

Platform Engineer

Hiring Organisation
Vertech Group (UK) Ltd
Location
EC1V, Finsbury, Greater London, United Kingdom
Employment Type
Permanent
Salary
£100000 - £130000/annum + Benefits
exchanges Working with APIs, WebSockets and potentially FIX protocols Ensuring high availability and reliability across trading systems Collaborating with engineering and trading teams on performance and scalability Troubleshooting connectivity, latency and production issues Essential: Strong platform/infrastructure engineering background Experience integrating with exchanges (crypto or traditional) Understanding … application-level connectivity Nice to have: Experience in trading, fintech or crypto environments Exposure to low latency systems Knowledge of networking and system performance tuning Tremendous opportunity to work on systems where reliability and real-time performance actually matter, rather than just internal tooling ...

Managing SOC Engineer - MOD DV - Inside IR35

Hiring Organisation
Sanderson Government and Defence
Location
Hemel Hempstead, Hertfordshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £800 per day
servers. Elastic (Elastic Stack/Elastic Security): Hands-on with index lifecycle management (ILM), ingest pipelines, ECS mapping, transforms, and enrichment. Experience designing and tuning detection rules (KQL, EQL), response actions, case workflows, and Elastic Security posture features. Skilled in Fleet/Agent deployment, data stream design, and performance tuning at scale. Strong client management and relationship building experience SIEM experience with Splunk/Elastic Excellent analytical and problem-solving skills coupled with ability to assess complex situations, identify risks, and recommend effective solutions Proven hands-on experience operating Elastic Stack/Elastic Security and Splunk Enterprise ...

C++ Software Engineer

Hiring Organisation
Durlston Partners
Location
London Area, United Kingdom
London or has the right to work in London. You will be part of a highly collaborative, low-ego engineering culture that prioritises performance, innovation, and impact. Working alongside some of the brightest minds in quantitative trading and systems engineering, you will build and optimise ultra-low latency, high … throughput systems that operate at scale. Key Responsibilities: Design and implement high-performance C++ systems for low-latency trading Optimise existing code for speed and reliability under production workloads Collaborate closely with traders, researchers, and fellow engineers to develop scalable infrastructure Work across the full software lifecycle ...

Software Engineer

Hiring Organisation
Albert Bow
Location
City of London, London, United Kingdom
business APIs used globally. This role is ideal for someone who thrives in fast-paced fintech environments and is passionate about clean architecture, system performance, and secure engineering practices. Key Responsibilities Design and develop backend services and APIs with a focus on performance, maintainability, and security. Deliver … experience (TypeScript/Javascript). Professional Golang development experience. Strong GraphQL experience, including schemas, resolvers, and high-volume queries. Deep knowledge of PostgreSQL, including performance tuning and relational design. Hands-on experience with Redis for caching, pub/sub, or distributed systems. Fintech experience is a MUST — ideally ...

Backend Software Engineer / SRE Java JVM

Hiring Organisation
Client Server
Location
East London, London, United Kingdom
Employment Type
Permanent, Work From Home
driving improvements across the platform. You'll have a broad scope including hands-on coding (Java) to build tools and automation, incident response, observability, performance optimisation and operational excellence, working with large scale Java JVM distribution systems and message brokers such as Kafka and ActiveMQ, with … terrace, canteen and break out areas. About you: You have a strong Java software engineering background and a deep knowledge of JVM internals and performance tuning You have a good knowledge of Site Reliability Engineering and how to build scalable solutions to improve reliability, productivity and efficiency ...

Linux System Engineers

Hiring Organisation
CGI
Location
London, UK
Employment Type
Full-time
Your future duties and responsibilities In this role, you will support and enhance secure Linux environments across production and non-production systems, ensuring reliability, performance, and security. You will take ownership of diagnosing issues, improving deployment efficiency, and maintaining platforms that underpin highly sensitive operations. You will also work … collaborative setting. Key responsibilities include: Diagnose & Resolve system issues across production and non-production Linux environments Administer & Maintain enterprise Linux systems, ensuring stability and performance Optimise & Automate deployments to improve efficiency and reliability Support & Enable cloud adoption, hybrid architectures, and migration activities Contribute & Implement security improvements, including zero-trust ...

Data Architect

Hiring Organisation
Hirexa Solutions UK
Location
Hemel Hempstead, Hertfordshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £450 per day
architect, and optimize scalable enterprise data platforms. The role involves defining data platform architecture, governance standards, and scalable data transformation frameworks, while ensuring high performance, security, and cost efficiency. The architect will provide technical leadership to data engineering and analytics teams and ensure the platform supports enterprise reporting, advanced … modelling standards including dimensional modelling, star schema, and enterprise data models. Lead architecture reviews and solution design discussions for new data initiatives. Optimize Snowflake performance, workload management, and cost governance. Establish data governance frameworks including access control, data security, and compliance standards. Design and support AI/ML-ready ...

Infrastructure Data Engineer (Kafka) - Outside IR35 - Remote

Hiring Organisation
Exalto Consulting ltd
Location
South West London, London, United Kingdom
Employment Type
Contract, Work From Home
team responsible for maintaining and developing core data infrastructure that supports a range of business-critical use cases. The work includes improving platform performance, strengthening reliability, and helping internal teams make effective use of streaming capabilities. What the role involves You will take ownership … operation and improvement of Kafka infrastructure in production. That includes identifying performance issues, tuning configurations, resolving incidents, and building out the surrounding platform components needed to support a dependable streaming environment. The role also involves close collaboration with engineering, data, and analytics teams, so it is important that ...

Delphi Developer

Hiring Organisation
Octad Recruitment Consultants (Octad Ltd )
Location
Wickford, Essex, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
term system stability, this role will suit you perfectly. Key Responsibilities Maintain, support, and enhance existing Delphi enterprise applications. Diagnose and resolve complex defects, performance issues, and system bottlenecks. Work closely with business users to translate requirements into technical solutions. Produce clear documentation for updates, fixes, and new features. … experience. Strong experience with complex, data-driven applications. Proven background maintaining or upgrading legacy systems. Experience with visually inherited UIs. Strong debugging, optimisation, and performance-tuning skills. Experience working within Agile, Waterfall, or hybrid SDLC environments. Familiarity with version control (Git, SVN, etc.). Experience collaborating with ...

Data Engineer

Hiring Organisation
Reed
Location
Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Employment Type
Temporary
Salary
£550 - £700 per day, Inc benefits
mission-critical environments? We’re supporting a major banking programme delivering a high-stakes data migration within payments—an environment where precision, stability and performance genuinely matter. This is an opportunity to take ownership of complex extraction and migration activity in a live payments landscape, ensuring data integrity, zero … frameworks. Technical Environment A key element of this role is deep hands-on expertise with IBM DB2 on Mainframe , including: Indexing, clustering and partitioning Performance tuning and query optimisation Understanding how to operate within congested, high-throughput table structures Exposure to Oracle is beneficial for adjacent extractions across ...

Service Support Team Analyst

Hiring Organisation
CGI
Location
Lancashire, UK
Employment Type
Full-time
recurring issues and identify areas for operational improvement • Collaborate & Communicate: Liaise with clients, vendors, and 3rd parties to ensure timely resolution • Optimise & Contribute: Support performance tuning, minor upgrades, and knowledge base updates • Engage & Support: Participate in team meetings, share insights, and contribute to service excellence • Deliver & Lead: Support … motivation and accountability • Strong time management and organisational skills Desirable qualifications: • Experience in a customer-facing IT service desk role • Understanding of SLAs and performance targets • ITIL awareness or certification Together, as owners, let's turn meaningful insights into action. Life at CGI is rooted in ownership, teamwork, respect ...

NET Windows Developer

Hiring Organisation
Lawrence Harvey
Location
Essex, United Kingdom
Employment Type
Permanent
Salary
£45000 - £50000/annum
/.NET Core, WinForms/WPF. Experience working with databases, APIs, and system integrations. Proven track record of delivering production-ready software. Exposure to performance tuning and troubleshooting Windows desktop applications. Experience with secure coding practices and enterprise-grade application development. Financial services experience preferred If this ...

Delphi/SQL Developer

Hiring Organisation
Lawrence Harvey
Location
Essex, United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum
complex data-driven applications. Background working within Agile, Waterfall, or hybrid development environments. Experience of working in mature SDLC processes Understanding of software debugging, performance tuning, and optimization in both Delphi and SQL Server. If this may be of interest, please apply ASAP with an updated CV. ...

Azure Data Architect (Railway/ Transportation)

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract
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. Strong experience with Azure Blob Storage and associated configuration and security best practices. Proven experience implementing data models ...

Lead .Net Developer x 2

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£800 - £850/day Up to £850pd Umbrella
Extensive C# .Net Development experience ideally within financial services, on data-heavy projects. Extensive SQL server experience - Must Have. Solid experience in database modelling, performance tuning, and optimisation. Thorough knowledge of application programming for data intensive applications on SQL Server using Stored Procedures/tSQL. Good knowledge ...

Senior Infrastructure Engineer / Architect

Hiring Organisation
IT Talent Solutions
Location
Milton Keynes, Buckinghamshire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £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 ...