76 to 100 of 267 Performance Tuning Jobs in London

environments. The ideal candidate combines strong hands‐on engineering capability with architecture leadership, system design expertise, and a proven track record of optimizing high‐performance, low‐latency applications used by front‐office trading businesses. This role will drive technical strategy, architecture decisions, platform modernization, performance tuning … mission‐critical trading systems. Key Responsibilities: Lead architecture, design, and development of complex trading and market‐facing platforms. Define system architecture, scalability, resilience, and performance strategies for business‐critical applications. Drive modernization of legacy trading systems while ensuring business continuity and platform stability. Partner with traders, quants, business stakeholders ...

Write automation and tooling in Python or Go to remove manual work and reduce operational overhead Support and optimise Amazon RDS environments for availability, performance, and security Embed site reliability principles across the platform, including SLIs, SLOs, error budgets, and blameless incident reviews Build out monitoring, logging, alerting … building CI/CD pipelines with GitHub Actions Strong programming ability in Python or Go, beyond basic scripting Confident with Linux administration, troubleshooting, and performance tuning Experience with Amazon RDS or similar managed database services Track record of architecting cloud native platforms in regulated or security sensitive environments ...

provides market infrastructure and information services. These include: Bullish Exchange – a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high-performance central limit order book matching engine with automated market making to provide deep and predictable liquidity. Bullish Exchange is regulated in Germany, Hong Kong … Gibraltar. CoinDesk Indices – a collection of tradable proprietary and single-asset benchmarks and indices that track the performance of digital assets for global institutions in the digital assets and traditional finance industries. CoinDesk Data – a broad suite of digital assets market data and analytics, providing real-time insights into ...

customers include Deutsche Telekom, Viaplay, Fox, Disney, NBC, Paramount+, and many others. Core Responsibilities Analyzes and forecasts system capacity requirements to ensure scalability and performance for high‐profile events. Participate in incident response efforts, conduct post‐incident reviews, and implement corrective actions and improvements to monitoring. Develop and maintain … monitors and alerts across all services. Optimize system performance through tuning and configuration adjustments. Develop and maintain disaster recovery plans and procedures to ensure business continuity. Create and maintain comprehensive documentation for systems, processes, and procedures. Monitor and optimize cloud infrastructure to ensure efficient resource utilization. Identify opportunities ...

maintain scalable data models using dimensional modelling and star schema best practices Develop advanced DAX calculations and Power Query transformations Optimise report and dataset performance, ensuring reliability and scalability Partner with Data Engineering teams to support data warehousing and analytics architecture initiatives Implement and maintain Power BI governance, security … roles Strong commercial experience designing and delivering Power BI solutions in production environments Advanced Power BI expertise, including semantic modelling, DAX, Power Query, and performance optimisation Excellent data modelling skills with experience of star schema and dimensional modelling techniques Strong SQL skills, including complex query writing, data validation ...

pair programming, and test‐driven development. Drive continuous delivery and automation efforts across supported applications by means of root‐cause analysis reviews, knowledge management, performance tuning, and user training. Operate and evolve CI/CD pipelines, infrastructure‐as‐code tooling, and GitOps workflows to support rapid, safe delivery … they build; follows through from design to deployment to post‐incident review. Benefits 27 days annual leave (plus bank holidays). A discretionary annual performance‐related bonus. Private medical care & life insurance. Employee assistance program. Pension plan. Paid parental leave. Special discounts for employees, family, and friends. Access ...

problem management and knowledge sharing practices.Drives Continuous Delivery and Automation efforts across the supported applications by means of Root Cause Analysis reviews, Knowledge management, Performance tuning, and user training.Fosters a culture that promotes transparency and innovation for increased team productivity.Coaching members of the team and outside the immediate ...

cases.Perform technical code reviews and ensure adherence to best practices across the implementation.Mentor and guide development teams in Quantexa data modelling, scoring logic, and performance tuning.Collaborate with architects and data engineers to integrate Quantexa into broader Big Data ecosystems.Communicate complex technical solutions clearly and effectively to both technical ...

technical code reviews and ensure adherence to best practices across the implementation. Mentor and guide development teams in Quantexa data modelling, scoring logic, and performance tuning. Collaborate with architects and data engineers to integrate Quantexa into broader Big Data ecosystems. Communicate complex technical solutions clearly and effectively to both ...

formats. Able to write quality, testable code and has experience of automated testing. Experience with Continuous Integration and Continuous Deployment techniques. DESIRABLE: Experience of performance tuning. Experience of data visualisation and complex data transformations. Experience with steaming and event-processing architectures including technologies such as Kafka and change-data ...

QUANT SYSTEMS DEVELOPER – High Performance Trading InfrastructureLondon – Hybrid100,000-150,000 + bonusQuant Capital is recruiting on behalf of a leading global quant investment firm seeking a Systems Developer to join its high-impact technology group in London. This role is part of a core engineering team focused … building and maintaining the backbone infrastructure supporting high-performance trading and large-scale research.In this hands-on role, you will gain significant exposure to distributed systems, high-throughput computing, and low-latency infrastructure. You’ll work on complex technical challenges that directly influence the firm’s ability to process ...

enterprise data platform that underpins business intelligence, reporting and analytics across the organisation. The successful candidate will be responsible for building scalable, high-performance data solutions within Snowflake , designing robust data architectures, and developing modern data pipelines that transform data into trusted, business-ready information. This role will work … enterprise data platform centred around Snowflake . Build and optimise scalable dimensional data models to support enterprise-wide reporting and analytics. Develop high-performance ELT pipelines and data transformation processes within Snowflake . Optimise Snowflake virtual warehouses for performance, scalability and cost efficiency. Design and maintain production-grade ...

Project descriptionWe are seeking an experienced Senior KDB+ Developer to design, develop and optimize high performance data platforms built on kdb+. The ideal candidate will have deep expertise in kdb+ tick architecture, performance tuning at scale and close collaboration with business stakeholder - particularly within Risk functions … deliver robust, efficient and maintainable solutions.ResponsibilitiesDesign, develop and maintain kdb+ tick systems with strong understanding of data organization, schema design and the performance implications of different architectural approaches.Build and operate solutions handling large scale, high frequency datasets, ensuring low latency, high throughput and efficient memory usage.Analyze and optimize ...

Power BI semantic models, dashboards and reporting solutions for Risk Reporting, with particular focus on semantic model architecture, automated refresh processes, partitioning, governance and performance optimisation. Responsibilities: Designing and developing enterprise-grade Power BI reports, dashboards and scorecards. Building and maintaining semantic models using dimensional modelling best practices. Developing … Implementing Row-Level Security (RLS), governance controls and access management. Supporting Power BI Premium/Fabric capacity management. Troubleshooting refresh failures, gateway issues and performance bottlenecks. Implementing CI/CD pipelines and deployment automation for Power BI assets. Skills & Experience: Essential Expert Power BI Desktop and Power BI Service ...

Power BI semantic models, dashboards and reporting solutions for Risk Reporting, with particular focus on semantic model architecture, automated refresh processes, partitioning, governance and performance optimisation. Responsibilities: Designing and developing enterprise-grade Power BI reports, dashboards and scorecards. * Building and maintaining semantic models using dimensional modelling best practices. * Developing … Implementing Row-Level Security (RLS), governance controls and access management. * Supporting Power BI Premium/Fabric capacity management. * Troubleshooting refresh failures, gateway issues and performance bottlenecks. * Implementing CI/CD pipelines and deployment automation for Power BI assets. Skills & Experience: Essential * Expert Power BI Desktop and Power BI Service ...

significant impact within an ambitious and innovative organization.This role owns the end-to-end lifecycle of database platforms - from architecture and design, through performance optimization and automation, to incident response and long-term scalability planning. The successful candidate will act as a technical authority for MySQL, partnering closely with … ensure our databases can safely scale to meet high-traffic, data-intensive workloads.Key ResponsibilitiesDatabase Architecture & Scalability· Own and evolve the architecture of high-performance, highly available MySQL platforms supporting production game workloads (>50k QPS).· Design database solutions that support long-term data growth, fault tolerance, and operational simplicity. ...

Azure, GCP, 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 in the UK to support … 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 ...

growing team in the UK and rest of Europe.About the roleThe CICS Mainframe Systems Programmer is responsible for ensuring the stability, availability, performance, and continuous improvement of CICS services within the IBM Mainframe environment. The role requires strong technical expertise, domain knowledge, and specialist skills to operate, maintain … resolve complex technical issues.Lead problem determination, root cause analysis, and recovery activities during critical incidents.Design and implement new technology solutions to improve service availability, performance, and operational efficiency.Monitor CICS performance and system resources to ensure optimal response times and service levels.Develop, test, and maintain backup, recovery, and business ...

databases, cloud infrastructure (AWS), system troubleshooting, and production support. You will work closely with customers, internal engineering teams, and operations to ensure system stability, performance, and reliability.Key ResponsibilitiesProvide production and application support for live systemsManage and maintain Microsoft SQL Server databasesTroubleshoot performance issues, database errors, and system outagesPerform … Science or related field5+ years of experience in Production Support, Application Support, DBA, or Engineering SupportStrong hands-on experience with:Microsoft SQL Server & SQLDatabase performance tuning and troubleshootingWindows and/or Linux environmentsExperience with:Patching, upgrades, and migrationsCloud platforms, preferably AWSStrong problem-solving and communication skillsNice to HaveExperience ...

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. Astrong understanding of Power BI engineering discipline: PBIP/TMDLsource format, Git-based version control, pull-request … andstructured release processes, with demonstrable experience in a teamsetting. Provenability to carry out peer review and QA of analytics work, spotting modelerrors, DAX issues, performance problems and UX weaknesses. Excellentwritten and verbal communication skills, including presenting to underwriters and senior stakeholders, with a track record of turningambiguous business problems ...

effective in both.A genuine DevOps mindset: comfortable owning build pipelines, container images, releases, and the operational side of a product.Experience designing software for performance, scalability, and predictable cost on cloud infrastructure.Bonus PointsHands-on experience with Snowflake, especially Native Apps, Snowpark Container Services, or building stored procedures and UDFs … Trivy, etc.).Understanding of graph theory and graph algorithms (centrality, community detection, pathfinding, embeddings), or strong curiosity to learn them.Background in distributed systems, JVM performance tuning, or columnar/analytical query engines.Experience working in a distributed, remote-first team and shipping to enterprise customers.#Li-HybridWhy Join Neo4j Neo4j ...

provides market infrastructure and information services. These include: Bullish Exchange – a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high-performance central limit order book matching engine with automated market making to provide deep and predictable liquidity. Bullish Exchange is regulated in Germany, Hong Kong … Gibraltar. CoinDesk Indices – a collection of tradable proprietary and single-asset benchmarks and indices that track the performance of digital assets for global institutions in the digital assets and traditional finance industries. CoinDesk Data – a broad suite of digital assets market data and analytics, providing real-time insights into ...

andLangGraph, and integrate them into scalable AI workflows and architectures Contribute to system planning, architectural design,and structured testing to ensure long term reliability, performance, andmaintainability Preferably also someone who can set the buildingblocks and lead building out the backlog Required Skills Bachelor or Master or equivalent in Statistics … Programming skills in Python, SQL, or Scala. Proficiency in data modelling,ETL/ELT processes, and data architecture. Strong analytical background with problem-solvingskills. Performance tuning concepts like watermarking, latedata handling, parallelism & checkpointing. Hands-on expertise in ADF, and QlikReplicate for data ingestion and replication. Experience working ...

retaining importantly strong ethical standards. Best practice: Experience in implementing best practices such as Behaviour Driven Development (BDD), Test Driven Development (TDD) and continuous performance testing using open‐source toolsets. Harden deployments for security and high availability by implementing best practice design principles. Experience in containerisation and orchestration tools … Experience in Keycloak or other identity systems VPN/Secure network access tools (e.g. AppGate or similar) Database management experience (Postgres, MongoDB, performance tuning) Experience in designing and implementing disaster recovery and real‐time business continuity solutions for cloud‐based applications and services. You will thrive ...

Software Developer – High Performance Trading SystemsLocation: London (On-site)400k+ total compWe are looking for a talented software engineer to join a high-performing team responsible for architecting and delivering the systems that underpin a leading and disruptive global trading operation.You’ll work on the full lifecycle of high … throughput, low-latency platforms – including algorithmic trading engines, venue connectivity, and real-time pricing infrastructure. Expect deep technical ownership, constant performance tuning, and direct impact on production trading.What you’ll work on:Design and optimise mission-critical systems where microseconds and gigabits matterBuild core infrastructure for trading strategies ...