101 to 124 of 124 Performance Optimisation Jobs in London

governance of RESTful APIs, JSON, and HTTP standards API versioning and backward‐compatibility strategies MongoDB/NoSQL expertise, including: Data modeling Indexing strategies Performance optimization Advanced experience with Java concurrency, streams, and performance tuning Cloud & Infrastructure AWS services including EC2, ECS/EKS, S3, RDS and/… working in Agile/Scrum environments and influencing engineering best practices Experience Level Principal‐level backend engineering experience building and operating large‐scale, high‐performance systems Approximately 8+ years of backend development experience, with several years working on production Java and Spring Boot services Proven experience owning architecture ...

Ensure pipelines are auditable, lineage-aware, idempotent, and resilient in regulated environments. Implement robust data quality controls including testing, validation, monitoring, and alerting. Drive performance optimization across Spark and Snowflake workloads. Partner with Product, Engineering, DevOps, and Regulatory teams to translate requirements into scalable technical designs. Improve engineering standards … your partner, and your child(ren) Employee Assistance Program Enhanced parental leave (maternity & paternity) Professional qualification sponsorship Accelerated career progression based on performance, not tenure Holiday entitlement increases with tenure Flexible hours with core collaboration time Paid volunteering leave Gym & fitness discounts Quarterly socials, and office snacks & drinks Interest ...

automation, cloud-native best practices, data lifecycle management, and high engineering standards. Oversee end-to-end data engineering delivery, ensuring pipeline reliability, observability, performance, resilience, and continuous improvement. Your Skills: Expert-level hands-on experience with Azure Data Services and Databricks in enterprise, highly regulated environments. Deep understanding … Delta Lake, Medallion architecture, Lakehouse patterns, distributed compute, data modelling, and performance optimisation. Strong programming skills in Python, PySpark, and Spark SQL, with experience implementing CI/CD pipelines (Azure DevOps, branching/merging, automation). Solid knowledge of data governance, lineage, access controls, secure cloud engineering, and FinOps ...

React , TypeScript , and Next.js . You’ll work across the full front‐end life cycle — from architecture and design collaboration, through to deployment and optimisation — delivering robust, performant, and accessible user interfaces. You’ll join a highly collaborative team where your voice will matter, and your work will … Build and maintain modern web applications using React , TypeScript , and Next.js . Translate UI/UX designs into responsive, accessible and high‐performance user interfaces. Collaborate strategically with backend engineers, product owners and designers to deliver end‐to‐end solutions. Write clean, tested, maintainable code and set best‐practice ...

Azure Databricks, Azure Data Lake Storage, Azure Data Factory).• Architect and implement advanced data pipelines using Databricks, Delta Lake, Python and Spark, ensuring performance, reliability, and maintainability across cloud and on-prem environments.• Champion data quality, governance, and observability, ensuring data is accurate, timely, and fit-for-purpose … including Azure Databricks, Azure Data Lake Storage, and Azure Data Factory.• Advanced proficiency in SQL, Python, and Spark (PySpark), with a strong focus on performance optimization and distributed processing.• Proven experience in CI/CD practices using industry-standard tools (e.g., GitHub Actions, Azure DevOps).• Strong understanding ...

Azure Databricks, Azure Data Lake Storage, Azure Data Factory). Architect and implement advanced data pipelines using Databricks, Delta Lake, Python and Spark, ensuring performance, reliability, and maintainability across cloud and on-prem environments. Champion data quality, governance, and observability, ensuring data is accurate, timely, and fit-for-purpose … including Azure Databricks, Azure Data Lake Storage, and Azure Data Factory. Advanced proficiency in SQL, Python, and Spark (PySpark), with a strong focus on performance optimization and distributed processing. Proven experience in CI/CD practices using industry-standard tools (e.g., GitHub Actions, Azure DevOps). Strong understanding ...

Quant Developer/Data Scientist Location: Flexible (Major Financial Hubs) Experience: 25 Years Compensation: Competitive + Performance-Based Bonus A leading asset management firm is seeking a highly talented Quant Developer/Data Scientist to join its systematic and discretionary investment teams. This is a front-office, high-impact … analytics tools. Work closely with PMs and Quants to translate research ideas into production-grade models and code . Build and maintain high-performance C++ and Python components used for modelling, simulation, and live trading. Design scalable Linux-based data and compute architectures , including feature engineering and large dataset ...

expertise in Splunk Enterprise, ITSI, and Kubernetes/OpenShift observability. The ideal candidate will build scalable monitoring solutions, drive service health insights, and optimize performance across hybrid cloud environments. Key Responsibilities Splunk Architecture & Operations Design, deploy, and manage Splunk Enterprise and ITSI for hybrid Kubernetes/OpenShift environments. Onboard …/etcd), node readiness, pod restart trends Network/storage errors, quota usage, bursting patterns Capacity metrics and noisy‐neighbor detection Search & Platform Performance Tune Splunk search performance, workload rules, concurrency, DMA, summary indexing, and scheduling hygiene. Alerting & Integrations Implement alerting, enrichment, routing to ITSM/ChatOps, suppression ...

reactive state management, and real-time data handling (WebSockets/SSE) using TypeScript . Technical Design: Lead framework decisions and navigate trade-offs between performance, UX, and maintainability. Engineering Excellence: Drive standards through rigorous code reviews, unit/E2E testing, and performance profiling. Fintech Focus: Ensure all interfaces … consuming RESTful/event-driven APIs and managing complex, real-time data states (RxJS/NgRx). Quality: Strong advocate for WCAG accessibility, performance optimization, and robust testing (Jest, Cypress). ...

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 … guest behaviour analysis, booking trends, revenue analytics, and operational reporting. Required Technical Skills Data Platform Strong expertise in Snowflake Deep knowledge of Snowflake architecture, performance tuning, data sharing, security, and workload optimization. Cloud Platform Strong experience with Amazon Web Services, including: S3 IAM AWS Glue Lambda CloudWatch Data Transformation ...

modify data models to accommodate new PRISM position attributes. * Ensure data consistency, referential integrity, and alignment with business rules. * Tune SQL queries, optimise ETL performance, and resolve bottlenecks. * Add or update validation rules, data quality checkpoints, reconciliations, and monitoring scripts. * Support defect analysis and resolution across SIT/… SQL. * Hands on experience with ETL frameworks, ideally SSIS, including package development, debugging, and optimisation. * Solid understanding of data modelling, schema design, indexing, and performance optimisation. * Ability to work with complex data structures in Finance or Risk domains. * Familiarity with PRISM, GL accounting data flows, or financial system integrations ...

modify data models to accommodate new PRISM position attributes. * Ensure data consistency, referential integrity, and alignment with business rules. * Tune SQL queries, optimise ETL performance, and resolve bottlenecks. * Add or update validation rules, data quality checkpoints, reconciliations, and monitoring scripts. * Support defect analysis and resolution across SIT/… SQL. * Hands on experience with ETL frameworks, ideally SSIS, including package development, debugging, and optimisation. * Solid understanding of data modelling, schema design, indexing, and performance optimisation. * Ability to work with complex data structures in Finance or Risk domains. * Familiarity with PRISM, GL accounting data flows, or financial system integrations ...

decisions within the team, ensuring solutions are scalable, maintainable, and align with long-term strategic goals. Champion best practices in areas like system design, performance, security, and operational excellence. About you: 5+ years of professional experience building web applications using Ruby, Rails, React, and TypeScript. Strong backend development skills … lead technical initiatives from concept to completion, often involving multiple team members or complex integrations. Well versed in production operations, incident response, and performance optimisation. You proactively identify and mitigate risks to ensure system stability and scalability. Benefits: Hybrid working: Split your week between home and the office, with ...

required for process mining in Celonis. Translate existing process event logs (case IDs, activities, timestamps, attributes) into a Data Model. Ensure scalability, reusability, and performance of event log frameworks across processes. Data Model & Data Pipeline Development Develop and optimize ETL/ELT pipelines from Source systems. Data ingestion, transformation … Design and optimize process mining data models (CCPM and OCPM) aligned with requirements. Handle large-volume transactional datasets while preserving process integrity and traceability. Performance Optimization & Quality Optimize queries, transformations, and data models for performance and scalability. Perform data validation, reconciliation, and root-cause analysis. Proactively identify data ...

technology team supporting Market Risk and regulatory initiatives, including FRTB (Fundamental Review of the Trading Book). The role involves designing and delivering high-performance risk analytics, integrating trading data, and building scalable Python solutions used directly by traders, quants, and risk managers. Key Responsibilities Develop and maintain Python … risk teams to translate business requirements into robust technical solutions. Integrate trading, pricing, and market data into risk systems and analytics platforms. Optimize performance for large-scale risk calculations and data processing. Contribute to system architecture, code quality, and best practices across the development team. Required Skills & Experience Strong ...

. Designing and maintaining efficient data pipelines and vector storage solutions using MongoDB Atlas Vector Search. Fine-tuning LLMs on custom datasets to enhance performance for specialized tasks related to our documentation and user support. Collaborating with our YOLO development team to explore and build innovative multi-modal solutions. … full RAG pipeline, including vector embeddings , rerankers , and data indexing in databases like MongoDB. Practical knowledge of LLM fine-tuning, prompt engineering, and performance optimization. Familiarity with MLOps principles and tools, including CI/CD with GitHub Actions . A strong interest in computer vision and an understanding ...

through Azure SQL, OLAP technologies, and DAX-powered semantic models. You will collaborate with data engineers, analysts, and business stakeholders to ensure reliable, high-performance data pipelines and analytics platforms. Key Responsibilities Data Warehouse Development Design and develop enterprise data warehouse solutions using Azure SQL Database/Azure … snowflake schemas for analytical workloads. Develop ETL/ELT pipelines for ingesting and transforming data from multiple source systems. Implement data partitioning, indexing, and performance optimization strategies. Data Modeling & Analytics Develop OLAP data models for business intelligence and reporting. Create and optimize DAX measures, calculated columns, and KPIs. Design ...

take root-cause ownership— not just advise. Reporting & Team Context You’ll be part of a close-knit Martech team supporting CRM and Performance Marketing capability. Senior CRM Managers will rely on you to unlock Braze’s full potential. Data Engineering partners with you on CRM data models … triggered messaging across web and nativeapp environments. Ensure identity resolution, consent handling, and schema alignment are robustand future-proof. Advanced Braze Build & Optimisation Design and optimise complex Canvas journeys across markets. CRM Technology Manager (Braze Specialist) V2 2 Build scalable, reusable HTML/CSS/Liquid templates. Leverage advanced ...

will: Deliver a phased migration roadmap from monolithic native Android to React Native. Reduce platform risk while increasing cross-platform feature parity. Introduce measurable performance improvements in mobile stability and delivery velocity. Influence long-term mobile architecture decisions across the organisation. Responsibilities Architect & Build - Design and ship … Android app and rebuild functionality in React Native without disrupting current operations. Bridge Native & Cross-Platform - Write native modules where necessary and ensure high-performance interop between Kotlin and JavaScript/TypeScript using the React Native Bridge and JSI. Cross-Team Alignment - Work closely with the Swift/ ...

. Security & Governance: Oversee Azure IAM, Key Vault, and general security protocols within a UNIX environment to ensure compliant and hardened architectures. Performance Optimization: Implement and tune high-performance web stacks using Apache, Varnish for caching, and HAProxy for load balancing. Team Leadership: Manage and technically govern ...

Your Impact Campaign Execution & Traffic Management: Meticulously build and launch campaigns, ad sets, and individual ads across key channels. Manage the technical pipeline of performance marketing initiatives, contributing directly to the growth of a sophisticated e-commerce business. Oversee audience targeting integration, manage audience match rates across platforms … Server, DSPs, and publisher reporting systems. Be able to resolve complex ad-serving, tracking, and reporting issues with internal teams and external partners. Performance Optimization & Reporting: Monitor and optimize campaigns to ensure they run without issue, managing budget pacing to avoid under/over spend, and hit campaign KPIs ...

operational excellence. Build Observability Infrastructure Architect tracing, logging, and monitoring systems for agent behavior at scale. Develop dashboards, metrics, and alerting pipelines. Enable continuous performance evaluation and optimization. Mentor and Grow the Team Lead architectural decision-making within the squad. Conduct code reviews and establish engineering best practices. Mentor … strategy. Identify technical risks and drive reliability and velocity improvements. Influence technical direction beyond the immediate team. Core Skills Expert-level Python (async programming, performance optimization, SDK/library design). Deep understanding of agentic frameworks (LangChain, LangGraph, LlamaIndex, AutoGen or similar), including internal mechanics. Proven experience shipping production ...

Change Management, Service Catalog, and Knowledge Management. Administer user access, roles, and permissions within the ServiceNow environment. Develop and manage ServiceNow reports, dashboards, and performance analytics to track system usage and optimize performance. Execute regular system maintenance duties such as patching, upgrades, and performance optimization. Deliver comprehensive user … expect: Salary - £25,000 - £30,000 28 days holiday Company sick pay scheme Pension match contribution Life insurance policies Great development opportunities to progress Performance based annual Christmas bonus Pay rise consideration at end of year ...

Milton Keynes. This is a hands-on role combining Oracle APEX development, reporting, and database support, with a strong focus on production stability and performance optimisation. Due to the nature of the project, active UK SC Clearance is mandatory. Key Responsibilities: ● Develop and maintain applications using Oracle APEX ● Design … manage reports using JasperReports or similar tools ● Write and optimise complex SQL queries ● Perform database performance tuning and troubleshooting ● Provide production support (incident management, root cause analysis) ● Monitor systems and ensure high availability of critical applications ● Collaborate with internal teams and stakeholders on data requirements Required Skills & Experience ✔ Strong ...