1 to 25 of 103 Performance Tuning Jobs in London

based in the UK or US and offers the opportunity to build scalable, real-time services using modern technologies. If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities … DevOps, Product, and QA teams to ensure production-grade solutions. Participate in architectural discussions, advocate for best practices, and provide mentorship to peers. Drive performance tuning, fault tolerance, and observability improvements across services. Required Skills & Experience: 5+ years of experience in Core Java development with a focus ...

based in the UK or US and offers the opportunity to build scalable, real-time services using modern technologies.If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities: Design … with DevOps, Product, and QA teams to ensure production-grade solutions. Drive architectural changes, advocate for best practices, and provide mentorship to peers. Drive performance tuning, fault tolerance, and observability improvements across services. Required Skills & Experience: 10+ years of experience in Java development with a focus on performance ...

across podcasting, video and next generation consumer experiences. Their analytics and BI capability sits at the heart of digital strategy, supporting product teams, content performance and audience engagement. The business is actively modernising its data stack, moving away from legacy BI platforms toward scalable, best in class solutions. … optimise Power BI solutions, covering data modelling, DAX and semantic layers. Design robust data models using star schema principles and well managed relationships. Own performance tuning across Power BI models and reports to ensure scalability and usability. Partner closely with data engineering and analytics to shape high quality ...

Support Engineer & Administrator experience to manage, support, and optimize Pitney Bowes mailing and shipping solutions. The role involves end-to-end platform administration, troubleshooting, performance tuning, and integration support across enterprise environments. Key Responsibilities Platform Administration & Support Administer and maintain Pitney Bowes systems (e.g., SendPro, Mailstream, Spectrum, EngageOne … patch management of Pitney Bowes applications. Manage system configurations, user roles, permissions, and access controls. Monitor system health and ensure high availability and performance of the platform. Production Support & Incident Management Provide L2/L3 support for production issues and critical incidents. Conduct root cause analysis (RCA) and implement ...

London, United Kingdom Posted: 10 months ago This is a job posted by our partner Jooble Tech stack Architecture Python refactoring TypeScript Software Engineer Performance tuning Django Company MineHub offers an open, enterprise‐grade platform designed for digital trade that enhances efficiency, security, and responsibility within the mining … scalable software solutions using Python/Django (legacy) and TypeScript (future). Proactively optimize and modernize systems through tech debt reduction, code refactoring, performance tuning, and ... Compensation Competitive Role type Full time Visa sponsorship Not provided #J-18808-Ljbffr ...

focus on Oracle environments, Linux/AIX administration, and core banking systems. The successful candidate will play a key role in ensuring the stability, performance, security and scalability of critical platforms within a highly regulated environment. The role Administer and optimise Oracle databases within critical banking platforms Manage … maintain Linux (RHEL/Oracle Linux) and AIX environments Perform upgrades, patching, tuning and performance optimisation across infrastructure and database layers Support backup, recovery and disaster recovery processes using RMAN and Data Guard Work closely with application and infrastructure teams to troubleshoot production issues Automate routine administration tasks ...

hands-on Senior Data Architect who is equally comfortable designing the target state for a multi-system SQL data estate, writing and tuning the T-SQL that delivers it, and standing up the security, monitoring and operational practices that keep it running. You will own data architecture across … framework and PowerShell development at expert level partition design and partition-aligned indexing, clustered/nonclustered index strategy, deduplication, parallel-run cutovers, schema migration, performance tuning of high-impact production queries. Driving the in-flight ETL replatform replacing legacy SSIS jobs with a table-driven, parallel ...

Lambda; strong PySpark/Python and SQL for large-scale batch processing. Data engineering at scale in government or similarly complex domains, including performance tuning and data quality management. CI/CD & DevOps: pipelines and IaC (e.g., Terraform), automated testing, and release governance. Version control & collaboration: Git/ ...

stack (Data Factory, Synapse/Fabric, SQL-based semantic layers). Advanced Power BI: data modelling (star schemas), advanced DAX, Power Query/M, performance tuning, RLS and deployment via pipelines. A strong understanding of Power BI engineering discipline: PBIP/TMDL source format, Git-based version control … with demonstrable experience in a team setting. Proven ability to carry out peer review and QA of analytics work, spotting model errors, DAX issues, performance problems and UX weaknesses. Excellent written and verbal communication skills, including presenting to underwriting and senior stakeholders, with a track record of turning ambiguous ...

highly skilled and motivated iOS Developer to join our dynamic engineering team. The ideal candidate will have strong expertise in building scalable, high-performance iOS applications using modern Apple technologies and best development practices. You will collaborate closely with cross-functional teams to design, develop, test, and maintain robust … Specialisms: Xcode Programming Languages: Swift, SwiftUI, Obj-C RELEVANT EXPERIENCES: Familiarity with Restful APIs to connect iOS applications to back-end services Experience with Performance and Memory Tuning with tools such as instruments Experience with threading and performance tuning Unit and UI testing Accessibility support DESIRED ...

observable systems using modern DevOps practices, including infrastructure as code and automated quality controls. Take ownership of services in production, including monitoring, troubleshooting, performance tuning and reliability improvements. Work directly with customers to understand requirements, shape technical solutions and clearly communicate progress, risks and outcomes. Troubleshoot complex issues ...

attribution models, allocations, and reporting frameworks — into scalable technical systems Architect and optimise data models and database layers , including schema design, indexing strategies, query tuning, and stored procedures Develop and maintain CI/CD pipelines and engineering tooling to support reliable, frequent, and high-quality deployments Implement event-driven … architectures using Kafka , enabling real-time data processing, system decoupling, and auditability Ensure high performance, reliability, and scalability across distributed systems, including observability, monitoring, and production readiness Partner with product, operations, and investment stakeholders to refine requirements and deliver iterative solutions in Agile environments Core requirements 8+ years ...

Power BI to augment client decision-making and operational outcomes. Architecture, Governance & Standards Translate business requirements into end-to-end data architecture, balancing performance, cost, security, and maintainability. Apply and advise on security patterns and contribute to governance-by-design. Enforce technical documentation standards, architectural artefacts, and implementation patterns … audiences. Strong relationship-building and stakeholder management in complex client environments. Code Management CI/CD for Fabric items. Git-based workflow. Testing frameworks. Performance tuning patterns. Cost/capacity optimisation. Desirable Skills & Experience Experience across adjacent Microsoft services often paired with Fabric (e.g., Azure Synapse Analytics, Azure ...

data structures Hands-on experience with AWS cloud services, particularly: EC2, RDS, Lambda, Athena, Glue Expertise in relational and/or NoSQL databases, including performance tuning Proficiency in Python or similar programming/scripting languages Experience with Test Driven Development (TDD) and automated testing frameworks Desirable Skills Familiarity ...

supporting production and non-production SQL Server databases that underpin business‐critical applications. Perform hands‐on production DBA activities, including operational support, troubleshooting, and performance investigation. Support the operation of AlwaysOn Availability Groups. Investigate and resolve database‐related issues such as performance degradation, blocking, deadlocks, resource contention … application‐impacting incidents. Ensure databases meet agreed standards for availability, performance, security, and recoverability. Support stable day‐to‐day operation of database services while identifying opportunities for improvement. Cloud & Multi‐Platform Support Support and operate Azure SQL workloads in line with platform and security standards. Provide hands‐on support ...

trading and market data systems. As part of the specialised network connectivity and hybrid cloud engineering teams, you will help shape and deliver high performance network services across on premise and hybrid cloud environments. The team plays a central role in the firm’s long term transformation, where innovation … technical depth, and continuous learning are core principles.We are looking for engineers who thrive in complex environments, enjoy solving high performance networking challenges, and want to influence the evolution of next generation connectivity platforms.**WHAT YOU'LL BE DOING:**LAN & Connectivity Engineering* Lead the design, optimisation, and evolution ...

automation Requirements Strong commercial Java engineering background within financial services Experience building scalable distributed systems and APIs Strong understanding of multithreading, profiling, and performance tuning Experience with modern engineering practices including TDD, Agile, CI/CD, and automated testing Understanding of clean architecture principles, SOLID design, and software ...

BestXWe are seeking an experienced Senior kdb+ Developer to join the BestX engineering team. In this role, you will design, build, and optimise high‐performance data platforms using kdb+, supporting BestX’s multi‐asset analytics capabilities.The ideal candidate brings deep expertise in kdb+ tick architectures, large‐scale performance tuning, and works closely with quantitative and engineering teams to deliver robust, efficient, and maintainable solutions.Key ResponsibilitiesDesign and develop key components of BestX’s multi‐asset analytics platform.Architect, build, and maintain kdb+ tick systems, with strong consideration for data organisation, schema design, and architectural trade‐offs.Develop and operate ...

seeking an experienced Senior kdb+ Developer to join the BestX engineering team. In this role, you will design, build, and optimise high‐performance data platforms using kdb+, supporting BestX's multi‐asset analytics capabilities. The ideal candidate brings deep expertise in kdb+ tick architectures, large‐scale performance tuning … State Street's Global Markets and GlobalLink ecosystem, is the industry‐standard, multi‐asset Transaction Cost Analysis (TCA) platform . Built as a high‐performance analytics platform, BestX processes over one billion market data updates per day , delivering independent, venue‐agnostic insights across FX, fixed income, and equities. BestX ...

enterprise integrations Implement evaluation, monitoring, and observability frameworks to ensure accuracy, latency, reliability, and system health across AI agent lifecycles Optimize AI and system performance across cost, scalability, and latency dimensions in production environments Deliverables or Project Scope Production‐ready AI‐powered applications aligned to defined business workflows … experience with CI/CD pipelines, infrastructure as code, and monitoring or observability tools Proven ability to deliver production‐quality code, including testing, debugging, performance tuning, and operational readiness Preferred Qualifications Experience with agent frameworks such as LangGraph, AutoGen, CrewAI, or similar Experience designing multi‐agent or distributed ...

leading global digital assets and trading technology business is looking to hire a Senior Trading Systems Developer to help build and optimise high-performance trading infrastructure supporting market making, OTC, systematic trading, and electronic execution environments. This role sits at the intersection of low-latency software engineering and infrastructure … optimisation, focused on maximising throughput, minimising latency, and delivering deterministic performance across critical trading workflows. The Role Design and develop low-latency trading systems supporting market data, execution, and order routing Build high-performance distributed systems used across trading and liquidity platforms Optimise application, operating system, network ...

SpringBoot skills Experience of developing and deploying on Unix or Linux Hands-on experience of using the Kafka ecosystem Experience of profiling and performance tuning Experience of Behaviour-Driven and Test-Driven development principles and skills Experience of Public Cloud development Soft Skills: Have the ability to motivate ...

Manage virtual machine lifecycle including provisioning, maintenance, migration, and decommissioning Perform OS rebuilds and bare metal provisioning using Rebar Maintain infrastructure stability, availability, and performance Operating Systems Advanced Linux administration including troubleshooting, patching, hardening, and performance tuning Windows Server administration and operational support Perform system upgrades, rebuilds … recovery activities Cloud Support Provide operational support for AWS cloud environments Troubleshoot cloud infrastructure, performance, networking, and access issues Monitor cloud resources and recommend improvements for reliability, security, and cost efficiency Support hybrid infrastructure environments Infrastructure as Code and DevOps Strong experience with Terraform for infrastructure provisioning and updates ...

Data Warehousing, AWS, SQL Server DBA/Data Engineer) Founded in 2010, our client is a rapidly growing software company focused on delivering high-performance data solutions for enterprise clients. With a strong presence across the U.S. and Europe, they’re now scaling their operations … their expansion, they are looking for a talented SQL/Data Engineer. In particular, they are looking to move into the field of high-performance data analytics. contribute to the ongoing development and performance optimisation of their mission-critical data platforms. Our client is looking for passionate ...

data models Creating dashboards and reports for senior leaders and business users Improving data quality, documentation, and governance Optimising SQL queries and dashboard performance Working with stakeholders to define KPIs and technical requirements Supporting junior engineers with code reviews and BI best practice Skills and experience: 5+ years' experience … data engineering, analytics engineering, or technical analytics Strong SQL skills, including joins, window functions, and performance tuning Experience with Databricks, Snowflake, or BigQuery Strong data modelling experience, ideally with dbt Experience with BI tools such as Omni, Power BI, Tableau, Looker, or Sigma Strong stakeholder management and communication ...