101 to 125 of 483 Performance Optimisation Jobs in London

Senior Full Stack Software Developer (Post-Trade)

Location
Greater London, England, United Kingdom
management. Responsibilities Build, enhance and maintain high-quality, well-tested web applications using Angular and C# Contribute to UI architecture, component design, reusability and performance Design and implement backend services, APIs and data integrations Work across the full application lifecycle: requirements gathering, design, implementation, testing, release and support Build … grade backend technologies such as C#/.NET (preferred) or Java Good understanding of modern UI patterns, state management, component-driven development and web performance optimisation Solid understanding of application architecture, data modelling and integration patterns Strong problem-solving skills across multiple technologies and business domains Enthusiastic, collaborative ...

Java Developer – Front Office / Trading Systems

Location
Greater London, England, United Kingdom
tech-native consultancy delivering high value-added IT expertise to the financial services industry. We specialise in complex software engineering environments where performance, robustness and scalability are critical: low latency systems, real-time data processing, distributed architectures and high-volume flows. Joining MARGO means working in demanding Front Office … systems supporting electronic trading activities across multiple asset classes (e.g. Equities, Fixed Income, Commodities, FX, Derivatives). Real-time and event-driven architectures High performance and low-latency constraints Close interaction with trading, quantitative and risk teams Short delivery cycles and high engineering standards Role Overview We are looking ...

Security Data and Platform Engineer

Location
Greater London, England, United Kingdom
cloud, endpoint, network and SaaS sources Define and continuously improve data quality standards to support detection, investigation and threat hunting Contribute to the operation, performance and evolution of the Elastic Security platform Apply software engineering and scripting skills, for example in Python or Bash, to automate ingestion, validation, monitoring … Qualifications Strong experience with Elastic Stack and data engineering technologies such as Logstash, Beats, Kafka or similar Expertise in Elastic data modelling, indexing and performance optimisation Experience designing scalable log collection and processing architectures Knowledge of data governance, retention and security telemetry across cloud, endpoint and network Experience ...

MLOps Engineer

Hiring Organisation
DGH Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
manage AI platforms and agent infrastructure - Build and maintain CI/CD pipelines and DevOps workflows - Implement observability, monitoring, and logging solutions - Optimise performance, scalability, and cost efficiency - Support AI teams with infrastructure, deployment, and integration - Ensure platform security, compliance, and high availability - Automate infrastructure using Infrastructure as Code … practices - Experience with Kubernetes/containerisation technologies - Strong programming skills (e.g. Python, Go, Node.js) - Experience with observability tools (e.g. OpenTelemetry, Datadog) - Understanding of security, performance optimisation, and scalability Desirable Skills - Experience working on AI/ML platforms or deployments - Exposure to large-scale distributed systems - AWS certifications ...

Data Engineer

Hiring Organisation
Synapri
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 460 - 470 Daily
data assets from legacy platforms into modern cloud-based environments. Deliver enterprise-grade data solutions within a highly regulated environment. Ensure data quality, integrity, performance, and security standards are met. Collaborate with technical and business stakeholders to translate requirements into effective data solutions. Troubleshoot production issues and implement sustainable … databases. Proven experience building and supporting enterprise data pipelines and integration solutions. Experience working within cloud-based data platforms. Strong understanding of data modelling, performance optimisation, and data quality controls. Desirable Experience Banking or Financial Services experience. Experience working within regulated environments. Exposure to Azure Data Platform services. ...

Data Engineer

Hiring Organisation
Synapri
Location
Canary Wharf, Greater London, United Kingdom
Employment Type
Contract
Contract Rate
£460 - £470/day
data assets from legacy platforms into modern cloud-based environments. Deliver enterprise-grade data solutions within a highly regulated environment. Ensure data quality, integrity, performance, and security standards are met. Collaborate with technical and business stakeholders to translate requirements into effective data solutions. Troubleshoot production issues and implement sustainable … databases. Proven experience building and supporting enterprise data pipelines and integration solutions. Experience working within cloud-based data platforms. Strong understanding of data modelling, performance optimisation, and data quality controls. Desirable Experience Banking or Financial Services experience. Experience working within regulated environments. Exposure to Azure Data Platform services. ...

Senior Engineer 27 Goswell Rd., Barbican, London EC1M 7AN

Location
Greater London, England, United Kingdom
statically-typed language, and familiarity with a web framework (Spring Boot or Ruby on Rails) Strong skills in automated testing (unit, end-to-end, performance, stress) and a high bar for quality Working knowledge of SQL and relational database concepts at scale, including performance optimisation Technical ...

Senior Fullstack Engineer (Python + React.js)

Location
Greater London, England, United Kingdom
efficient server-side applications. The ideal candidate should have experience in microservices architecture, API development, database management, and frontend ensuring high availability and performance of backend and frontend services. In this role, you will collaborate closely with frontend engineers, product managers, and other stakeholders to build robust backend solutions … that power our applications. A strong focus on Separation of Concerns (SoC), security best practices, and performance optimization is crucial for success in this position. Your key responsibilities: Integrate models into backend systems and create API endpoints for model interaction (e.g., retrieving predictions). Develop and maintain scalable services ...

Infrastructure & Platform Specialist Solutions Architect (SSA)

Hiring Organisation
DataBricks
Location
London, UK
Employment Type
Full-time
Azure ExpressRoute/Google Cloud Interconnect, and private connectivity such as AWS PrivateLink/Azure Private Link/GCP Private Service Connect), network routing, performance optimisation, and large-scale deployment managementPlatform Administration: High availability, disaster recovery, cluster orchestration, observability and audit (e.g. Amazon CloudWatch/CloudTrail, Azure Monitor … religion, sexual orientation, socio-economic status, veteran status, and other protected characteristics. ComplianceIf access to export-controlled technology or source code is required for performance of job duties, it is within Employer's discretion whether to apply for a U.S. government license for such positions, and Employer may decline ...

Infrastructure & Platform Specialist Solutions Architect (SSA)

Location
Greater London, England, United Kingdom
Azure ExpressRoute/Google Cloud Interconnect, and private connectivity such as AWS PrivateLink/Azure Private Link/GCP Private Service Connect), network routing, performance optimisation, and large-scale deployment management Platform Administration: High availability, disaster recovery, cluster orchestration, observability and audit (e.g. Amazon CloudWatch/CloudTrail, Azure … sexual orientation, socio-economic status, veteran status, and other protected characteristics. Compliance If access to export-controlled technology or source code is required for performance of job duties, it is within Employer's discretion whether to apply for a U.S. government license for such positions, and Employer may decline ...

Senior Scala Engineer

Location
Greater London, England, United Kingdom
improvement in platform capabilities, development practices, and operational effectiveness. Required Skills Core Technical Stack: Deep expertise in Scala, Java, or another JVM language, including performance optimisation and tuning. Data Platforms: Strong experience with database technologies including Oracle Exadata at scale, MongoDB, Elasticsearch, or similar. Cloud & DevOps: Solid knowledge ...

Databricks Data Engineer | Real Estate Investment - Contract

Location
Greater London, England, United Kingdom
medallion architectures. Experience performing data profiling, lineage analysis, source-to-target mapping and data quality assessment. Strong understanding of production-grade data platforms, performance optimisation and operational support. Experience migrating SSIS, ETL pipelines, stored procedures and reporting solutions to cloud-based platforms. Exposure to Azure DevOps ...

Senior Developer

Location
Greater London, England, United Kingdom
reviews, unit testing, and ensure compliance with development standards. Work collaboratively in Agile environments and contribute to sprint planning and estimations. Support bug fixing, performance optimisation, and integration testing. Provide build and release instructions to DevOps and QA teams. Support build and deployment processes, ensuring smooth release cycles ...

Databricks Data Engineer | Real Estate Investment - Contract

Hiring Organisation
Marks Sattin
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£600.00 - £700.00 per day
medallion architectures. Experience performing data profiling, lineage analysis, source-to-target mapping and data quality assessment. Strong understanding of production-grade data platforms, performance optimisation and operational support. Experience migrating SSIS, ETL pipelines, stored procedures and reporting solutions to cloud-based platforms. Exposure to Azure DevOps ...

Senior Front-End Engineer React

Hiring Organisation
Halian Technology Limited
Location
Central London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
Auth0 or similar identity providers Sentry or comparable monitoring and error-tracking platforms Azure Static Web Apps Azure DevOps CI/CD pipelines Vite performance optimisation and bundle analysis Storybook or other component documentation platforms WebSockets or SignalR Client onboarding platforms KYC/KYB workflows Regulated financial services ...

Software Engineering Senior Front End Developer - eSC or eDV Clearance Required Professional Mu[...]

Location
Greater London, England, United Kingdom
integrated end‐to‐end solutions. Build reusable components, shared UI patterns, and maintain clean, modular, and scalable codebases. Perform testing, debugging, and front-end performance optimisation to ensure reliable, fast, and secure user experiences. Contribute front-end expertise during requirements analysis, solution design, and technical planning. Support ...

Full Stack Software Developer 197637

Location
Greater London, England, United Kingdom
This is an opportunity to join a highly technical engineering team working on complex, performance-driven software in a fast-paced environment. You'll have the chance to take ownership of impactful projects, influence technical direction, and collaborate with experienced engineers who value high-quality software development. The Company … C# and .NET Work on a combination of greenfield development and existing systems Contribute to system architecture and technical decision-making Develop scalable, high-performance software solutions Collaborate closely with engineers and stakeholders across the business Support performance optimisation and continuous improvement initiatives Take ownership of projects ...

Python Engineer Data Domains

Location
Greater London, England, United Kingdom
products built for: analytics forecasting feature engineering customer behavior insights integration of new data sources Data Transformation & Governance Lead best practices in: data modelling performance optimization governance consistent reliable readily available Platform & Tooling Build reusable tooling and frameworks that enable teams to: ingest data store data transform data serve ...

Full Stack Java Web Developer

Hiring Organisation
Luxoft
Location
London, UK
Employment Type
Full-time
discussions and collaborates with senior engineers and architects. Works closely with frontend developers to integrate backend services with UI components. Supports troubleshooting, debugging, and performance optimization of applications. Breaks down user stories into technical tasks and delivers within agreed timelines. Collaborates effectively in Agile teams with product owners ...

Lead Technical Program Manager

Location
Greater London, England, United Kingdom
pressure, shifting environments Strong stakeholder management skills, building productive relationships and driving outcomes aligned with firm objectives Understanding of data platform trade-offs, including performance optimization, cost management, scalability, and operational excellence Deep technical understanding of modern data platform architectures, including data lakes, data warehouses, Lakehouse architectures, and distributed ...

Forward Deployed Engineer, Infrastructure Specialist (UK Public Sector)

Location
Greater London, England, United Kingdom
bonus if you have... Familiarity with GPU node orchestration & scheduling You understand the intersection of GPU infrastructure, inference systems, Kubernetes, distributed systems, and performance optimization. Full-Time Employees at Cohere enjoy these Perks: A weekly lunch stipend of $75/£75 or equivalent in your local currency for lunch. ...

Lead Network Operations Engineer

Hiring Organisation
G Research
Location
London, UK
Employment Type
Full-time
your career. The roleThis is an exciting opportunity to shape and mature operational processes through automation and observability. You will own the reliability, performance, and security of the organisation's network and security infrastructure across datacentre and office environments. This is a hands-on technical leadership role focused … operational excellence, automation, observability, and incident response — ensuring high availability, resilience, and a strong security posture. Key responsibilities: Own the day-to-day performance, stability, availability, and security of network platforms across datacentre, WAN, and campus environmentsLead response to critical incidents, driving rapid diagnosis, containment, and long-term remediationChampion ...

Senior Analytics Engineer

Location
Greater London, England, United Kingdom
clean, ready-to-use data models. Data Modelling: Implement best-practice data modelling and software engineering techniques to ensure data structures are optimised for performance, accuracy, and ease of use in reporting and analytical applications (e.g. CI/CD, testing, lineage). Data Quality and Testing: Write comprehensive data … their reporting needs and optimise data models to support their analytical use cases. Collaborate with Data Engineers on data ingestion strategies and platform optimisation. Performance Optimisation: Tune and optimise SQL queries and data models to reduce latency and improve the performance of our data warehouse and downstream ...

Contract Data Engineer - £375/day Inside IR35 - Immediate Start

Hiring Organisation
Tenth Revolution Group
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£350.00 - £375.00 per day
particular focus on Azure Cosmos DB and NoSQL data modelling. You'll design and optimise data models, schemas and data structures, while considering performance, scalability and cost. You'll also support data migration and integration projects, working with technologies such as Azure Data Factory and SQL to build pipelines … scalable data models across SQL and NoSQL, with a strong focus on Azure Cosmos DB Design and optimise Cosmos DB models, including partitioning, indexing, performance, scalability, and cost. Define and implement data contracts, including schemas, versioning, and validation rules. Design and orchestrate ETL/ELT pipelines using Azure Data ...

Senior Full Stack Engineer

Hiring Organisation
Teya Solutions
Location
London, UK
Employment Type
Full-time
that responsibility shapes the way we work. We move fast. We care about quality. We stay close to the detail. And we believe great performance and genuine hospitality should go hand in hand. If you want to build meaningful products, solve real problems and make a genuine difference … management, and Strong Customer Authentication (SCA) flows—into secure, end-to-end user experiences backed by reliable APIs. Build and maintain data-rich, high-performance interfaces for transaction feeds, balances, statements, and multi-currency views, ensuring efficient data fetching, state management, and seamless interaction with backend services. Develop ...