276 to 300 of 305 Performance Optimisation Jobs in England

Snowflake Data Architect

Hiring Organisation
Hirexa Solutions UK
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £450 per day
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 ...

Full Stack Engineer

Hiring Organisation
Formula Recruitment
Location
England, United Kingdom
processing and analysing live content in real time. As the platform scales, they’re hiring a Full-Stack Engineer to design and deliver high-performance systems across real-time data pipelines, modern frontend applications, and AI-enhanced product features. What You’ll Do as a Full-Stack Engineer … driven analysis across a modern digital content platform. Design and build resilient backend services using Java and cloud-native infrastructure. Develop modern, high-performance frontend applications using TypeScript and a modern JavaScript framework. Architect and maintain real-time data pipelines using event-driven systems and streaming technologies. Work across ...

Data Warehouse Developer

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Permanent
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 ...

Data Warehouse Developer

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
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 ...

SAP Callidus (SAP Commissions) Support Lead

Hiring Organisation
Stackstudio Digital Ltd
Location
Reading, Berkshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
From £550 to £600 per day
Accuracy & Period Close: Run/monitor calculations, validate results with Finance/Sales Ops, manage disputes/adjustments, and sign-off for payroll integration. Performance & Stability: Track and remediate long-running jobs, bottlenecks, and data quality defects; recommend design optimizations. Governance & Reporting: Provide weekly/monthly service reports … root-cause analysis (RCA), defect resolution, workarounds, and communication management. Data operations proficiency: EIM templates, data validations, reconciliation, pipeline/job scheduler monitoring, and performance tuning. Integration knowledge with CRM/ERP and ETL/iPaaS (e.g., Salesforce/CRM, SAP, SAP CPI/Informatica); ability to read ...

Senior Software Engineer, Ruby

Hiring Organisation
The Electric Car Scheme
Location
City of London, London, United Kingdom
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 ...

CELONIS PROCESS MINING - DATA ENGINEER

Hiring Organisation
Infoplus Technologies UK Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
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 ...

Senior Python Developer – Market Risk (Front Office / FRTB)

Hiring Organisation
Crisil
Location
City of London, London, United Kingdom
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 ...

LLM Engineer

Hiring Organisation
Ultralytics
Location
London Area, United Kingdom
. 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 ...

Senior IBMi Architect

Hiring Organisation
HCLTech
Location
Slough, England, United Kingdom
enterprise solution design, particularly within Leasing, Banking, and Insurance industries. IBMi/iSeries Architect focuses on below aspects Technical: Platform engineering, modernization, integrations, performance, and migration. Functional: Business processes, domain mapping, system capabilities, and functional transformation. Solutioning: End-to-end architecture, enterprise integration, modernization strategy, and governance. Key Responsibilities … Implement middleware and integration patterns. Application Architecture Architect modular and service-oriented AS400 applications. Define layered architecture, data access strategies, security architecture and performance optimization Modernize RPG/RPGLE/CL/CLLE/COBOL monoliths, Green-screen applications → Web/UI platforms, Establish coding and architectural standards. Domain ...

SC Cleared Data Warehouse Engineer - Outside IR35 - Remote

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £500 per day
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 ...

Software Engineer (C#)

Hiring Organisation
microTECH Global LTD
Location
Stoke-On-Trent, England, United Kingdom
Computer Science, Electrical Engineering, or a related field. 3 - 5 years of professional software development experience. Proficiency in C#, with experience in multithreading and performance optimization. Working knowledge of algorithm design and implementation, with attention to performance and scalability. Experience in web development (front-end and back ...

OutSystems ODC SME / OutSystems ODC Migration Specialist

Hiring Organisation
Stackstudio Digital Ltd
Location
Birmingham, West Midlands, United Kingdom
Employment Type
Contract
Contract Rate
From £450 to £500 per day
scalable ODC applications following cloud native and low-code best practices. Provide strategic guidance on OutSystems cloud services, governance, CI/CD pipelines, and performance optimization. 2. Migration from OutSystems 11 to ODC Lead and execute migration assessments, including gap analysis, architecture review, and effort estimation. Define and implement … ODC. Re-architect or refactor components (data models, integrations, UI modules, logic flows) where required for ODC compliance. Resolve compatibility issues, technical constraints, and performance challenges during migration. 3. Architecture & Technical Leadership Work with enterprise architects to design future state ODC-based solutions. Develop reusable components, libraries, templates ...

CRM Technology Manager (Braze Specialist)

Hiring Organisation
Aquent
Location
City of London, London, United Kingdom
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 ...

Senior Mobile Engineer (React Native + Android)

Hiring Organisation
Transreport
Location
City of London, London, United Kingdom
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/ ...

Data Modeler

Hiring Organisation
Norton Blake
Location
England, United Kingdom
best practices, and governance guidelines Design and optimize data models in BigQuery Collaborate with Data Engineers and Analytics teams to ensure model usability and performance Translate business requirements into scalable logical and physical data models Support architecture decisions for data platforms and data lifecycle management Ensure data quality, lineage … Mentor teams on data modelling best practices Must Have Strong hands-on experience with BigQuery Strong experience with GCP data ecosystem Advanced SQL and performance optimization skills Experience designing enterprise-scale data models Strong stakeholder communication skill Nice to Have Strong experience in Data Vault 2.0 methodology (mandatory) Experience ...

Data Platform Engineer Microsoft Fabric

Hiring Organisation
Interact Consulting Limited
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
design and build a modern enterprise data platform using Microsoft Fabric. Youll play a key role in architecting a secure, scalable and high-performance cloud environment that enables advanced analytics and data-driven decision making. This is a hybrid role with 1 day a week in the Milton Keynes … data pipelines, lakehouse/warehouse solutions and semantic models. Implement Platform as Code (terraform) and CI/CD practices. Ensure security, governance, monitoring and performance optimisation. Lead incident resolution and continuous platform improvement. Essential Skills Proven experience building enterprise cloud data platforms. Strong hands-on expertise in Microsoft Fabric ...

Senior Solaris Engineer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
Warrington, Cheshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £600 per day
implementing, managing and patching Sun Solaris infrastructure environments.6-month contractBased in Warrington (Hybrid/onsite first 3 weeks)Inside IR35Experience RequiredPerforming operating system installation, performance tuning, hardware/software upgrades, disaster recovery testing, and scripting for automation.Performance optimisation - includes tuning system parameters, monitoring performance, and performing proactive ...

Azure Architect Linux

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550 per day
. 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 ...

Digital Ad Operations Specialist - Contractor

Hiring Organisation
Palo Alto Networks
Location
City of London, London, United Kingdom
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 ...

WordPress Developer (Elementor Specialist)

Hiring Organisation
Saturate Marketing
Location
Hertford, England, United Kingdom
between Elementor’s capabilities and bespoke design requirements and have the technical depth to manage server-side logic and custom data structures. Key Responsibilities Performance-First Build: Develop pixel-perfect, responsive sites using Elementor Pro and Gutenberg . You must ensure every build is optimised for speed (Core … first line of defence for site errors, plugin conflicts, and server-side issues. Technical SEO Support: Implement advanced caching strategies and performance optimisations to ensure peak site velocity. Collaboration: Work with Designers to ensure UI feasibility and with the Marketing team to ensure tracking (GTM/ ...

SAP Callidus/Commission Support Lead

Hiring Organisation
Smartedge Solutions Ltd
Location
Reading, Berkshire, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
root-cause analysis (RCA), defect resolution, workarounds, and communication management. Data operations proficiency: EIM templates, data validations, reconciliation, pipeline/job scheduler monitoring, and performance tuning. Integration knowledge with CRM/ERP and ETL/iPaaS (eg, Salesforce/CRM,SAP, SAP CPI/Informatica); ability to read … skills: Exposure to SAP Territories & Quotas (T&Q/TQM), SAP CPQ, or related SPM components. Experience across multiple pods/environments, refreshes, and performance optimization. Familiarity with reporting/analytics in SAP Commissions and downstream data warehousing. Scripting/automation for operational efficiency (eg, file checks, reconciliations, alerting ...

Digital & AI Support Apprentice

Hiring Organisation
QA
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£16,000 per annum
experience in providing high-quality AI and cloud support to internal or external customers, troubleshooting AI-driven systems and cloud services to ensure availability, performance, and reliability at all times. With AI operations, cloud troubleshooting, and AWS administration at its core, an AI Support Engineer role within … machine learning engineering pathways. Create specialist AI support engineers with subject matter expertise aligned to business needs, including model monitoring, data pipelines, security, and performance optimisation. Entry requirements: 3 GCSEs (or equivalent) at grades 4+ (A-C) in any subject. GCSE Maths and English (or equivalents) at grades 3+ ...

Advisory Engineer

Hiring Organisation
WorkGenius Group
Location
City of London, London, United Kingdom
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 ...

Solutions Architect

Hiring Organisation
Oscar Technology
Location
Nottingham, Nottinghamshire, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £100,000 per annum
technical direction of both existing systems and new greenfield projects. Working closely with developers, product teams, and stakeholders, you will ensure scalable, high-performance solutions are designed and delivered from concept through to implementation. This role offers the opportunity to work on complex, mathematically-driven systems, influence architectural decisions … Proven experience in Solution Architecture/designing distributed systems Cloud experience (AWS preferred) Experience with NoSQL databases Strong understanding of system design, scalability, and performance optimization Strong Mathematical background (algorithm development/computational maths etc) Desirables: Frontend exposure (Angular 18+) Messaging systems (RabbitMQ/MassTransit) Experience with TDD/ ...