26 to 50 of 73 Performance Optimisation Jobs in London

Senior Architect - API

Hiring Organisation
Proactive Appointments
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £110,000 per annum
architectures and messaging strategies to power automation and connectivity across the enterprise. Provide technical leadership for large-scale, complex applications - from conceptual design to performance optimisation. Influence strategic decisions across cloud-native , SaaS , and on-premises environments. Collaborate with senior stakeholders, delivery teams, and other architects to ensure alignment ...

Data Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £800 per day
data loading and dataset management in production environments* Work closely with ML practitioners to enable training and inference pipelines* Ensure efficient memory usage and performance when handling large datasets* Integrate data from SQL-based systems into cloud and ML pipelines* Apply best practices around reliability, monitoring, and scalability Required … cloud environments with large-scale file-based data Desired Experience * BigQuery (GCP)* SQL databases (Microsoft SQL Server preferred; PostgreSQL also acceptable)* Memory management and performance optimisation* Exposure to ML workflows (without being a dedicated ML Engineer) Nice to Have * Broader GCP experience (Cloud Run, Cloud SQL, Cloud Scheduler ...

SharePoint Developer

Hiring Organisation
VIQU IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £550 per day
OneDrive, and other Microsoft 365 services. Build PowerApps that connect to live data sources (Dataverse, SQL, SharePoint, APIs). Support ongoing maintenance, troubleshooting, and performance optimisation of Power Platform solutions. Apply now to speak with VIQU IT in confidence about the Sharepoint Developer role. Or reach ...

Senior Java Developer - Electronic Trading

Hiring Organisation
McGregor Boyall Associates Limited
Location
London, United Kingdom
Employment Type
Contract
latency, high-throughput trading engines that power the firm's EMEA and global electronic trading business. This includes delivery of key functional changes, performance optimisation, and close collaboration with quants and traders. Key Responsibilities Design, develop, and enhance algorithmic trading engines and core frameworks Partner with the Quant ...

Senior Golang Developer - Kubernetes - Financial Services

Hiring Organisation
Rothstein Recruitment Ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 130,000 Annual
eager to apply your technical expertise to the financial services industry, this is the role for you. Key Responsibilities: Design, develop, and maintain high-performance Back End services using GoLang to support financial applications and services , including trading platforms, investment systems, and risk management tools. Build and deploy cloud … scaling, and resilience in a cloud environment. Write clean, efficient, and well-documented code while following best practices for financial systems development, focusing on performance and security. Collaborate with other development teams, business analysts, and stakeholders to define and refine requirements, and ensure that applications meet financial regulatory standards ...

Data Engineer Databricks

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £450 per day
designing and optimising large-scale data engineering solutions within the Databricks Data Intelligence Platform. This role is ideal for someone passionate about building high-performance data pipelines and ensuring robust data governance across modern cloud environments.Key Responsibilities Design, build, and maintain scalable data pipelines using Databricks Notebooks, Jobs … Workflows for both batch and streaming data. Optimise Spark and Delta Lake performance through efficient cluster configuration, adaptive query execution, and caching strategies. Conduct performance testing and cluster tuning to ensure cost-efficient, high-performing workloads. Implement data quality, lineage tracking, and access control policies aligned with Databricks ...

Data Engineer (Databricks)

Hiring Organisation
Hays Technology
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450/day 450
designing and optimising large-scale data engineering solutions within the Databricks Data Intelligence Platform. This role is ideal for someone passionate about building high-performance data pipelines and ensuring robust data governance across modern cloud environments. Key Responsibilities Design, build, and maintain scalable data pipelines using Databricks Notebooks, Jobs … Workflows for both batch and streaming data. Optimise Spark and Delta Lake performance through efficient cluster configuration, adaptive query execution, and caching strategies. Conduct performance testing and cluster tuning to ensure cost-efficient, high-performing workloads. Implement data quality, lineage tracking, and access control policies aligned with Databricks ...

Databricks Data Engineer

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £475/day up to £475 (Inside IR35)
Data Engineer with Active Security Clearance (SC) Strong experience with Databricks, PySpark and Delta Lake Expertise in Jobs & Workflows, cluster tuning, and performance optimisation Solid understanding of Data governance (Unity Catalog, Lineage, Access Policies) Hands-on with Azure services: Data Lake Storage (Gen2), Key Vault, Azure Functions Familiarity … Excellent communication and collaboration skills Nice to have: Immediate availability Experience with enterprise-scale Databricks environments Knowledge of Azure Synapse, Power BI and cost optimisation strategies If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call ...

Databricks Data Engineer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £475 per day
Data Engineer with Active Security Clearance (SC) Strong experience with Databricks, PySpark and Delta Lake Expertise in Jobs & Workflows, cluster tuning, and performance optimisation Solid understanding of Data governance (Unity Catalog, Lineage, Access Policies) Hands-on with Azure services: Data Lake Storage (Gen2), Key Vault, Azure Functions Familiarity … Excellent communication and collaboration skills Nice to have: Immediate availability Experience with enterprise-scale Databricks environments Knowledge of Azure Synapse, Power BI and cost optimisation strategies If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call ...

IT Applications Operations Engineer

Hiring Organisation
Oliver James
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 per annum
Hiring: IT Application Operations Engineer! Our client is seeking an experienced and dynamic IT Application Operations Engineer to ensure the stability, reliability, and performance of their mission-critical application ecosystem. This is an exciting opportunity to join a forward-thinking organisation where technology excellence directly empowers business success. … applications to ensure optimal performance.* Custom Development & Enhancements - Building and maintaining custom features and tools to meet business and application needs.* Monitoring & Troubleshooting - Analysing performance issues, resolving incidents quickly, and implementing solutions that drive efficiency.* Incident Management & Service Delivery - Leading incident resolution, managing SLAs and KPIs, and driving continual ...

Technology Product Owner, AI, Microsoft Stack, Data Bricks, Remote

Hiring Organisation
Carrington Recruitment Solutions Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Developer before moving into Product Ownership Technical proficiency:Familiarity with Azure services (e.g., Data Lake, Synapse, Fabric) and Databricks for data engineering, analytics, performance optimisation, and governance. Experience with implementing and optimising scalable cloud infrastructure is highly valued. Backlog management:Demonstrated expertise in maintaining and prioritizing product backlogs ...

Technology Product Owner, AI, Microsoft Stack, Data Bricks, Remote

Hiring Organisation
Carrington Recruitment Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £110,000 per annum
Developer before moving into Product Ownership Technical proficiency: Familiarity with Azure services (e.g., Data Lake, Synapse, Fabric) and Databricks for data engineering, analytics, performance optimisation, and governance. Experience with implementing and optimising scalable cloud infrastructure is highly valued. Backlog management: Demonstrated expertise in maintaining and prioritizing product backlogs ...

Data Scientist

Hiring Organisation
Hays Specialist Recruitment Limited
Location
West Drayton, Middlesex, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Python and ML frameworks (TensorFlow, PyTorch). Strong statistical and analytical skills. Experience with a wide range of Data Science techniques (e.g. ML, Optimisation, Simulation, GenAI, etc.). Demonstrated ability to take models from design through to production deployment, including performance optimisation, monitoring, and integration into business ...

Portfolio Solutions MI Analyst

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
countries and products. Bordereaux and block payments (project/ongoing): design, build and maintain bordereaux solutions, reconciliations and linking to claims for pricing and performance MI. Digital Working Group participation (ongoing): contribute to ensuring digital data is accessible, accurate and fit for purpose for actuarial, underwriting and portfolio management. … digital or portfolio solutions initiatives, with demonstrable stakeholder management and delivery in a complex environment. Excellent Power BI skills: data modelling (star schemas), DAX, performance optimisation, UX best practice, row-level security, and governance of shared datasets/workspaces. Strong SQL across Microsoft SQL Server/SSMS; able ...

Forward Deployed Engineer (Palantir)

Hiring Organisation
Consol Partners
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
Ontology, Workshop, OSDK, Code Repositories, Actions, and AIP/agentic capabilities - you can build production-grade applications not just prototypes Production deployment experience including performance optimisation, data pipeline architecture, permissioning at scale, audit requirements, and operational maintenance ...

Technical Lead

Hiring Organisation
E-Solutions IT Services UK Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
team of developers, enhancing their technical capabilities and increasing productivity. 2. To conduct comprehensive code reviews, establish and oversee quality assurance processes, performance optimization , implementation of best practices and coding standards to ensure successful delivery of complex projects. 3. To ensure process compliance in the assigned module| and participate ...

Senior ZK-Engineer

Hiring Organisation
Plexus Resource Solutions Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
trustless Bitcoin vaults and zk light-client operations. Lead the architecture and implementation of zkVM systems, including circuit design, data interfaces, proof pipelines, and performance optimization. Implement and enforce security best practices across zkVM programs. Requirements: Demonstrated expertise in Rust programming. Proven experience delivering zero-knowledge systems or infrastructure ...

APIGEE Architect

Hiring Organisation
Cognizant
Location
london, south east england, united kingdom
Google Cloud Platform (GCP) and Apigee to design and implement robust API solutions. With a strong focus on cloud infrastructure, API security, and performance optimization, you will ensure seamless integration across enterprise systems. Your role will be pivotal in driving innovation within telecom domain projects, contributing to business success … deployment and management of Anthos Service Mesh to enhance service connectivity and security. · Lead cloud infrastructure projects ensuring robust and scalable solutions. API Management & Optimisation: · Provide technical guidance on Apigee OPDK and Apigee X for optimised API management and performance. · Develop and maintain Apigee Developer Portal and Apigee Edge ...

Director - Lead Software Engineer (Java, Equities)

Hiring Organisation
Huxley Associates
Location
London, United Kingdom
Employment Type
Permanent
Salary
£120000 - £180000/annum + Bonus & Benefits Package
join our Equities Technology team within the Front Office. This is a hands-on, independent contributor role where you will design and build high-performance systems that support our equities trading business. You will work closely with traders, quants, and other technologists to deliver innovative solutions in a fast … management and execution. Collaborate with front-office stakeholders to understand business requirements and translate them into technical solutions. Ensure best practices in software architecture, performance optimization, and scalability. Mentor junior engineers and contribute to technical strategy while remaining hands-on in coding. Requirements Expert-level Java development skills with ...

Director - Lead Software Engineer Java, Equities

Hiring Organisation
Huxley
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£120,000 - £180,000 per annum
join our Equities Technology team within the Front Office. This is a hands-on, independent contributor role where you will design and build high-performance systems that support our equities trading business. You will work closely with traders, quants, and other technologists to deliver innovative solutions in a fast … management and execution. Collaborate with front-office stakeholders to understand business requirements and translate them into technical solutions. Ensure best practices in software architecture, performance optimization, and scalability. Mentor junior engineers and contribute to technical strategy while remaining hands-on in coding. Requirements Expert-level Java development skills with ...

Global Head of Platforms (DevOps)

Hiring Organisation
XACT PLACEMENTS LIMITED
Location
London, United Kingdom
Employment Type
Permanent
helps organisations understand exactly how they could be compromised in real time . They think like attackers, innovate like researchers, and execute like high-performance engineers. Now, theyre looking for a standout leader to shape and scale their global platform capability. ?? The Role: Global Head of Platforms (DevOps) This … change failure rates, and time-to-recovery across all services. Own cloud and infrastructure strategy across AWS/Azure with a focus on security, performance, cost, and global regulatory requirements. Partner with Product, Security, and Engineering to deliver secure, reliable, and scalable capabilities. Define and evolve platform architecture across ...

UI Lead

Hiring Organisation
Ascendion
Location
BR1, Bromley Town, Greater London, United Kingdom
Employment Type
Permanent, Contract
ideal candidate will have deep expertise in React, RxJS, and modern UI frameworks, combined with strong leadership and architectural skills to deliver high-performance, scalable, and intuitive trading interfaces. Key Responsibilities: Lead UI Development: Own the design and implementation of the front-end architecture for the SDP. Collaborate with … backend teams to deliver seamless user experiences. Technical Leadership: Mentor and guide a team of UI engineers, ensuring best practices in coding, testing, and performance optimization. Integration: Ensure smooth integration with Java-based backend services and real-time data streams. Performance & Scalability: Optimize UI for low-latency, high ...

Lead Software Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450 per day
Angular, or Vue.js. Back-End Development: Develop and maintain server-side logic with programming languages like .NET, Node.js, or Python. Nice to have skills: Performance Optimization: Identify and resolve performance bottlenecks in both front-end and back-end systems. Experience with monitoring and logging tools such as Azure ...

Lead Data Engineer

Hiring Organisation
ARC IT Recruitment Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
data marts that support complex analytics and operational use cases. Pipeline Optimization: Maintain and optimize data pipelines and warehouse environments to ensure top-tier performance, reliability, and scalability. Cross-Functional Collaboration: Effectively collaborate with cross-functional teams to translate business and technical requirements into high-quality, robust data solutions. …/ELT design and data orchestration, specifically with Apache Airflow. SQL Mastery: Strong SQL skills with significant experience in query tuning and performance optimisation. Programming Proficiency: Proficiency in Python and Bash (for data processing, scripting, and automation). Data Streaming: Familiarity with streaming data technologies (e.g., Kinesis, Kafka ...

Lead Data Engineer

Hiring Organisation
Arc IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £100,000 per annum
data marts that support complex analytics and operational use cases. Pipeline Optimization: Maintain and optimize data pipelines and warehouse environments to ensure top-tier performance, reliability, and scalability. Cross-Functional Collaboration: Effectively collaborate with cross-functional teams to translate business and technical requirements into high-quality, robust data solutions. …/ELT design and data orchestration, specifically with Apache Airflow. SQL Mastery: Strong SQL skills with significant experience in query tuning and performance optimisation. Programming Proficiency: Proficiency in Python and Bash (for data processing, scripting, and automation). Data Streaming: Familiarity with streaming data technologies (e.g., Kinesis, Kafka ...