201 to 225 of 267 Performance Tuning Jobs in London

Senior Frontend Engineer, Scale

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
simplicity in system/component design Demonstrate clean communication across technical and non‐technical stakeholders Make pragmatic decisions on when to optimize for performance vs. velocity based on business impact Thrive in cross‐functional environments spanning Product, Design, Compliance, and Sales Design for scale, maintainability, and production excellence Preferred … qualifications: Fintech, payments, or regulated industry experience High‐scale performance tuning (100k+ QPS, large user bases, strict latency SLAs) Multi‐tenant SaaS or platform architecture background Proficiency with PostgreSQL, Redis, Kafka, or cloud platforms (AWS/GCP/Azure) Experience with OAuth2.0, API design, or developer documentation Cross ...

Software Engineer, Scale

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
simplicity in system/component design. Demonstrate clean communication across technical and non‐technical stakeholders. Make pragmatic decisions on when to optimize for performance vs. velocity based on business impact. Thrive in cross‐functional environments spanning Product, Design, Compliance, and Sales. Design for scale, maintainability, and production excellence. Bonus … have Fintech, payments, or regulated industry experience. High‐scale performance tuning (100k+ QPS, large user bases, strict latency SLAs). Multi‐tenant SaaS or platform architecture background. Proficiency with PostgreSQL, Redis, Kafka, or cloud platforms (AWS/GCP/Azure). Experience with OAuth2.0, API design, or developer ...

Linux SysAdmin Engineer - RHEL

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£385/day £385 p/d Inside IR35
provisioning and lifecycle activities using Red Hat Satellite. Create and maintain Shell/Bash scripts to automate operational tasks and system processes. Monitor system performance, troubleshoot issues and perform root cause analysis. Manage servers and platforms through the Linux command line interface. Support system upgrades, deployments and infrastructure improvements. … automation and configuration management. Experience managing virtualisation platforms, particularly KVM. Knowledge of Red Hat Satellite for patching, provisioning and lifecycle management. Strong troubleshooting and performance tuning skills across Linux environments. Experience supporting enterprise-scale production systems. Understanding of security, patch management and platform compliance requirements. Ability to work ...

High-Performance Java Low-Latency Developer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Barclays in London is seeking a Low Latency Developer to design, develop and optimize high-performance trading systems that underpin our markets platform. You will contribute to latency-sensitive algorithmic rollouts and ensure the platform remains fast, stable, and precise in a dynamic trading environment. The role emphasizes secure … coding, performance tuning, and collaboration with cross-functional teams to deliver reliable software for critical market activity. #J-18808-Ljbffr ...

Oracle Architect - Payroll, Compliance, Implementations, Public Sector, Mainly Remote, London

Hiring Organisation
Bangura Solutions
Location
London, UK
translate them into technical architecture.Ensure compliance with relevant payroll regulations and data security standards.Provide technical guidance and mentorship to development and support teams.Conduct system performance tuning and troubleshooting.Stay updated with the latest Oracle technologies and payroll industry trends.Qualifications:Proven experience as an Oracle Architecture.Extensive knowledge of Oracle Database ...

Senior Software Engineer, Trading Platform, C++

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
multi-threaded programming and a strong understanding of hardware/software interaction Are comfortable working “under the hood” and you are quite skilled in performance tuning (applications, Linux, socket I/O, etc.) and troubleshooting Have experience working with C++ libraries like STL and Boost ...

Senior Software Engineer, Trading Platform, C++

Hiring Organisation
DRW
Location
London, UK
multi-threaded programming and a strong understanding of hardware/software interactionAre comfortable working “under the hood” and you are quite skilled in performance tuning (applications, Linux, socket I/O, etc.) and troubleshootingHave experience working with C++ libraries like STL and BoostAre up to date ...

AI Infrastructure Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Build and optimize inference services that deliver low‐latency, high‐reliability experiences for our customers, including autoscaling, routing, and fallbacks. Work on GPU‐level performance : tuning kernels, improving utilization, and identifying bottlenecks across our training and inference stack. Collaborate closely with ML scientists to implement cutting edge training ...

AI Infrastructure Engineer

Hiring Organisation
Intercom
Location
London, UK
evaluation.Build and optimize inference services that deliver low‐latency, high‐reliability experiences for our customers, including autoscaling, routing, and fallbacks.Work on GPU‐level performance: tuning kernels, improving utilization, and identifying bottlenecks across our training and inference stack.Collaborate closely with ML scientists to implement cutting edge training and inference ...

Engineering Director

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Practical experience leading DevOps and SRE initiatives and driving best practices Experience with cryptography preferred Bonus points for each of the following: Experience with performance tuning and scaling across client, backend, infrastructure Working closely with C-level executives to align on direction, vision and execution Having both ...

Senior Cassandra Platform Architect - Real-Time Payments

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Falcon Smart IT Limited in London, UK, is seeking a Senior Apache Cassandra Engineer to design, build and operate a high-performance NoSQL platform supporting real-time payment and fraud detection systems. Hybrid work arrangement in a regulated financial services environment. You will own data model design, cluster topology … performance tuning, security and disaster recovery, collaborating with cross-functional teams to deliver a scalable, resilient data platform. #J-18808-Ljbffr ...

Senior KDB+ Developer: Real-Time Risk Data Platforms

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Luxoft is looking for an experienced Senior KDB+ Developer in Greater London. The successful candidate will design and optimize high-performance data platforms using kdb+. Key responsibilities include building kdb+ systems, collaborating with Risk teams, and mentoring junior developers. Candidates should have over 8 years of experience, proficiency … language, and a solid background in performance tuning, with knowledge of Unix/Linux environments. This is an opportunity to work in a dynamic and challenging role within a leading firm. #J-18808-Ljbffr ...

Principal Data Solution Architect

Hiring Organisation
Formula Recruitment Limited
Location
London, UK
technology roadmaps balancing near-term delivery with longer-term target state architectureMentor engineers and architects on distributed data platform patternsDesign with security, cost optimisation, performance, and regulatory compliance in mind throughoutRequirements:Extensive experience designing and implementing distributed data platforms at scaleProven track record architecting real-time, low-latency streaming … platforms and event-driven architecturesStrong hands-on experience with Apache Spark and Databricks, including performance tuning at scaleExperience with Cassandra or similar distributed databases, including partitioning, consistency models, and optimisationSolid experience with OLTP databases such as PostgreSQL or MySQLCloud-native delivery experience on AWS, GCP, or AzureExperience delivering ...

Cassandra Database Engineer (NoSQL)

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £730 per day
fraud detection platform.Collaborate: Work closely with application and middleware teams, ensuring seamless data integration and alignment with business goals.Optimise: Take ownership of keyspace design, performance tuning, and operational readiness of the data platform.Documentation: Produce essential design documentation and operational runbooks for effective knowledge transfer. What You'll Bring … related field.4-9 years of hands-on experience in NoSQL database engineering, specifically with Apache Cassandra.Proficiency in keyspace and table design, replication strategies, and performance tuning.Familiarity with Linux administration, CQL, and cluster operations.Experience in regulated environments, with a keen understanding of security measures. Join Us Today ...

Cassandra Database Engineer (NoSQL)

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £730/day
platform. Collaborate: Work closely with application and middleware teams, ensuring seamless data integration and alignment with business goals. Optimise: Take ownership of keyspace design, performance tuning, and operational readiness of the data platform. Documentation: Produce essential design documentation and operational runbooks for effective knowledge transfer. What … years of hands-on experience in NoSQL database engineering, specifically with Apache Cassandra. Proficiency in keyspace and table design, replication strategies, and performance tuning. Familiarity with Linux administration, CQL, and cluster operations. Experience in regulated environments, with a keen understanding of security measures. Join Us Today ...

Senior zOS Systems Programmer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
commerce. Responsibilities Design, develop, maintain and support critical enterprise systems and platform services that underpin Global Payments' business operations. Lead system enhancements, software upgrades, performance tuning and platform optimisation activities. Troubleshoot complex production issues, perform root-cause analysis and implement permanent solutions. Collaborate with infrastructure, application, architecture … automation and operational excellence. Qualifications Extensive experience in systems programming within large-scale enterprise environments. Strong knowledge of operating systems, middleware, automation tooling and performance tuning. Proven ability to analyse and resolve complex technical problems in mission‐critical systems. Experience supporting highly available production platforms with a focus ...

Senior zOS Systems Programmer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Design, develop, maintain and support critical enterprise systems and platform services that underpin Global Payments' business operations. Lead system enhancements, software upgrades, performance tuning and platform optimisation activities. Troubleshoot complex production issues, perform root-cause analysis and implement permanent solutions. Collaborate with infrastructure, application, architecture and security teams … excellence. What you’ll bring Extensive experience in systems programming within large-scale enterprise environments. Strong knowledge of operating systems, middleware, automation tooling and performance tuning. Proven ability to analyse and resolve complex technical problems in mission-critical systems. Experience supporting highly available production platforms with a focus ...

Frontend Engineer, Real-Time Trading UIs (React/TypeScript)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
elegant UI engineering and wants to build products that matter at millisecond scale. This is your chance to work at the core of high-performance trading tech, crafting ultra-fast, hyper-polished interfaces used by some of the sharpest and most demanding minds in global finance. What … shape next-generation trading tools Designing and evolving front-end architectures for real-time data and complex visualisations Working in an environment where craftsmanship, performance, and code quality are taken seriously — every single day Tech Stack Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar state management) Tooling: Webpack ...

Anaplan Solution Architect

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
data integrity, scalability, and standardisation across Aztec’s modelling landscape. Key Responsibilities: Platform Configuration & Support Lead the design of multi-jurisdictional Anaplan models, ensuring performance, reusability, and governance Define modelling standards, calculation frameworks, and design conventions Own and manage the Anaplan ALM (Application Lifecycle Management) process across dev, test … experience designing and managing Anaplan or comparable modelling solutions Deep understanding of private-markets fund structures and carried-interest logic Expertise in model optimisation, performance tuning, and governance Strong collaboration, leadership, and documentation skills Qualifications & Experience Bachelor’s degree in Computer Science, Finance, or related field 6+ years ...

Anaplan Solution Architect

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
ensuring data integrity, scalability, and standardisation across Aztec’s modelling landscape. Responsibilities Platform Configuration & Support: Lead the design of multi-jurisdictional Anaplan models, ensuring performance, reusability, and governance. Define modelling standards, calculation frameworks, and design conventions. Own and manage the Anaplan ALM (Application Lifecycle Management) process across dev, test … experience designing and managing Anaplan or comparable modelling solutions. Deep understanding of private-markets fund structures and carried-interest logic. Expertise in model optimisation, performance tuning, and governance. Strong collaboration, leadership, and documentation skills. Qualifications & Experience Bachelor’s degree in Computer Science, Finance, or related field. 6+ years ...

Senior Palantir Engineer: Scale Data Pipelines & Solutions

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
delivering production-grade data systems with leadership in software design and quality. You will collaborate with architects, engineers, and operations to ensure robust delivery, performance tuning, and reliable deployments across cloud platforms. A strong emphasis on mentoring and driving best practices is included. #J-18808-Ljbffr ...

Informatica MDM Architect

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
resolving complex technical issues, and mentoring junior developers on IDMC best practices Experience with Survivorship, user exit, Data model customization, Org/Customer Master, Performance tuning, Address doctor and Data Stewardship in MDM Background in Banking Excellent communication skills with English Able to start immediately or 10 days ...

Windows Security Engineer - Quant Trading

Hiring Organisation
Quant Capital
Location
London, UK
common Windows vulnerabilities and mitigation methods, countermeasures to common TTPs, OS hardening/best practices, log aggregation and querying methods. Experience hardware monitoring and performance tuning • An appetite for delivering solutions to complex problem • Good hand son experience with core Windows infrastructure (Active Directory, PKI, SQL) • Experience developing ...

SAP ABAP EWM S/4 Hana Architect - UK

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
programming, Z‐tables, match codes. Support for customizing Fiori apps. Proficiency with ABAP runtime analysis tools (SE30), SQL trace (ST05), system dump analysis (ST22), performance tuning, troubleshooting, and capacity planning. Preferred Experience in life‐science domain. High‐level SAP S/4 EWM technical knowledge and roadmap awareness. ...

Network Engineer

Hiring Organisation
Indigo Vision
Location
London, UK
third party vendors to troubleshoot outages/circuits faults etc.Participating in an on-call rotation (begins after 6 months of service)Conduct capacity planning, performance tuning and optimisation.Ensure compliance with security policies and regulatory requirements from a public sector perspective, such as ISO 27001, Cyber Essentials and NCSC ...