76 to 100 of 483 Performance Optimisation Jobs in London

Senior Tech Lead, Quantitative Analytics Engineering

Location
Greater London, England, United Kingdom
solutions for private capital markets.## **WHAT YOU'LL BE DOING:*** Lead the design, development, and delivery of Private Markets Analytics product solutions, ensuring scalability, performance, maintainability, resilience, and high engineering quality.* Lead technical architecture and system design for distributed, cloud-native applications and services.* Drive adoption of AI/… Markets, alternative assets, portfolio analytics, financial data platforms, Fixed Income, or Multi-Asset Analytics is a strong plus.* Strong understanding of software architecture, scalability, performance optimisation, and modern system design principles.* Excellent communication, stakeholder management, and technical leadership skills.**Career Stage:**Manager**London Stock Exchange Group (LSEG) Information ...

Senior Engineer

Location
Greater London, England, United Kingdom
includes our commitment to being an inclusive workplace, attracting and developing exceptional talent, supporting our teammates’ physical, emotional, and financial wellness, recognizing and rewarding performance, and how we make an impact in the communities we serve. Bank of America is committed to an in-office culture with specific requirements … platform capabilities, development practices, and operational effectiveness. What we are looking for Deep solid expertise in Scala, Java, or another JVM language, including performance optimisation and tuning Strong experience with database technologies including Oracle Exadata at scale, MongoDB, Elasticsearch, or similar data platforms. Solid Cloud and DevOps knowledge ...

Senior Game Engine Programmer

Hiring Organisation
Tencent
Location
London, UK
Employment Type
Full-time
etc. What the Role EntailsWe are looking for a Senior Game Engine Programmer to join our engine team and contribute to the development and optimisation of cutting-edge game engine technologies. In this role, you will work on core engine systems across areas such as engine architecture, rendering, animation … physics, performance optimisation and cross-platform development. You will collaborate closely with gameplay, tools, art and production teams to build scalable and high-performance engine solutions for multiple platforms, including mobile, PC and console. You will also help solve complex engine challenges, and mentor other engineers within ...

Senior Game Engine Programmer

Location
Greater London, England, United Kingdom
What the Role Entails We are looking for a Senior Game Engine Programmer to join our engine team and contribute to the development and optimisation of cutting-edge game engine technologies. In this role, you will work on core engine systems across areas such as engine architecture, rendering, animation … physics, performance optimisation and cross-platform development. You will collaborate closely with gameplay, tools, art and production teams to build scalable and high-performance engine solutions for multiple platforms, including mobile, PC and console. You will also help solve complex engine challenges, and mentor other engineers within ...

Senior Data Engineer

Location
Greater London, England, United Kingdom
/CD and Infrastructure as Code. Work closely with technical and business stakeholders to deliver high-quality data products. Contribute to platform improvements, performance optimisation and overall data platform maturity. Ideal Candidate Proven experience working as a Senior Data Engineer within cloud-first environments. Strong background delivering platform ...

Integration Technical Lead – .NET, C# & Azure

Hiring Organisation
ARCA Consulting Ltd
Location
London, United Kingdom
Employment Type
Permanent
delivering integration solutions and distributed systems, including REST APIs, microservices and event-driven architectures. A strong understanding of cloud-native architecture, scalability and performance optimisation. Experience with DevOps, CI/CD and Infrastructure as Code, with ARM, Bicep or Terraform being advantageous. A genuine interest in mentoring engineers ...

Salesforce Senior Dev/Tech Lead

Hiring Organisation
Tata Consultancy Services
Location
London Area, United Kingdom
OAuth Authentication Middleware Integration Patterns DevOps & Tools Salesforce DX Git Azure DevOps Copado Jenkins (desirable) VS Code Data Loader Technical Leadership Solution Design Application Performance Optimization Code Review & Quality Assurance Mentoring Development Teams Agile/Scrum Delivery Knowledge of Government Digital Services (GDS) HMRC Governance Processes Data Protection & GDPR ...

Senior Low-Latency Java Engineer - London

Location
City Of London, England, United Kingdom
technology operates at serious scale, with response times in the 10-100 microsecond range. We're looking for experience in: Modern Java and JVM performance optimisation Low-latency algorithmic trading systems Market data and back-testing/simulation tools Linux internals, system calls and kernel tuning TCP/… kernel-bypass technologies Event-driven or event-sourcing microservices Performance analysis and targeted optimisation Experience with KDB, Rust or C++ would be highly advantageous. London - hybrid working, with up to two days from home £Excellent basic plus strong bonus potential This is an excellent opportunity for someone ...

Senior Data Analyst

Hiring Organisation
Develop
Location
West London, London, United Kingdom
Employment Type
Permanent
Salary
£70,000
dashboards Build scalable data models (star schema, Kimball methodology) and advanced DAX measures Use Power Query (M) for data transformation Optimise report/dataset performance and manage deployment across environments Implement governance standards (naming conventions, documentation, RLS) Validate data via SQL and translate business requirements into BI solutions across … production Advanced Power BI (data modelling, DAX) and advanced SQL Experience with enterprise data warehouses, medallion architecture, Kimball methodology Strong grasp of BI performance optimisation Microsoft Fabric familiarity (Lakehouse, Dataflows Gen2) Strong stakeholder management and communication skills Good to Have Azure/AWS/GCP experience Power ...

Principal Engineer (AWS & Java)

Hiring Organisation
London Stock Exchange Group
Location
London, UK
Employment Type
Full-time
guide effective development approaches by the engineering teams. Lead the implementation of the most complex and business‐critical changes, setting the standard for quality, performance, and maintainability. Provide hands‐on expertise in Java‐based systems, including concurrency, performance tuning, memory management, and API design. Non‐Functional Ownership & System … capacity management, ensuring the platform performs predictably under variable and peak loads. Provide deep expertise in working with large databases and data stores, including performance optimisation, data access patterns, and operational scaling. Problem Solving & Technical Decision SupportSolve the most complex and ambiguous technical problems, particularly those spanning multiple ...

Senior Data Engineer

Location
Greater London, England, United Kingdom
Terraform Your Profile Essential skills/knowledge/experience: Experience with AWS data stack (S3, EMR, EC2, etc.) PySpark & Snowflake & CI/CD & DevOps Performance optimisation and large-scale data processing Data modelling (RDV/BDV or similar patterns preferred) Query performance tuning DBT (or equivalent ...

Azure Data Platform Manager

Hiring Organisation
SSA Digital Recruitment
Location
London, United Kingdom
Employment Type
Permanent
Salary
£70000 - £85000/annum Bonus + Bens
designing and delivering enterprise-scale Azure data platforms? We're looking for an experienced Azure Data Platform Manager to lead the design, development and optimisation of a modern Azure Data Platform within a complex, multi-market technology environment. Azure Data Platform design experience is critical for this position. … Data Factory, Databricks, Data Lake, Azure SQL and Synapse while ensuring solutions are scalable, secure, supportable and cost-effective. You'll also oversee platform performance, monitoring and incident management, lead migrations and platform upgrades, and promote best practice across Data Architecture, Azure DevOps, CI/CD, Data Governance, Data ...

Infrastructure & Platform Senior Specialist Solutions Engineer

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 Senior Specialist Solutions Engineer

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 Developer – C# / .NET / SQL – Hybrid / London

Hiring Organisation
MYO Talent
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £100,000 per annum
Developer/Senior Developer Strong hands-on expertise in C#, .NET/.NET Core, and SQL/T-SQL. Solid understanding of database design, performance optimisation, and query tuning. Experience building and supporting integrations with third-party systems using REST APIs or similar technologies. Practical experience working with ...

BSS Software Developer

Hiring Organisation
MBR Partners
Location
London, UK
Employment Type
Full-time
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 Technical skills Essential Strong expertise in Java, Spring Boot, and J2EE. Hands-on experience with RESTful APIs, Microservices ...

AWS Platform Engineer - Inside IR35 - Investment Banking

Hiring Organisation
SRG
Location
London, United Kingdom
Employment Type
Full-Time
Salary
£650.00 - £700.00 per day
integration flows built on Glue, Lambda, Step Functions, and EventBridge Working with containerised/compute platforms - Amazon EKS and EC2 Monitoring, alerting, and performance optimisation via CloudWatch Supporting production stability - issue resolution and continuous improvement of operational practices Mentoring and upskilling internal engineers to embed sustainable, long-term ...

Lead Engineer

Location
Greater London, England, United Kingdom
Familiarity with monolithic systems and migration strategies Sound judgement on technical debt and long-term maintainability Strong communication skills, able to justify architectural decisions Performance optimisation experience at scale Nice to have: Ruby on Rails experience Full-stack React experience (React Router or Next.js preferred over Angular/ ...

Senior Lead Software Engineer - React Native

Location
Greater London, England, United Kingdom
Hooks End to end testing applications with Detox/Appium/WebdriverIO/Playwright Extensive experience in modern web development, including responsive design and performance optimization Hands-on experience with design systems, component libraries, and implementing consistent UI/UX across large-scale applications Preferred qualifications, capabilities and skills ...

Site Reliability Engineer

Hiring Organisation
REVYBE IT RECRUITMENT LIMITED
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
platform Implement and maintain effective logging, metrics, tracing, alerting, and dashboards Define and improve SLIs, SLOs, and reliability metrics Proactively identify and resolve performance, availability, and reliability issues Lead and contribute to incident response, troubleshooting, and root cause analysis Automate operational processes and eliminate repetitive manual tasks Work closely … engineers to improve deployment processes, system reliability, and developer experience Help improve platform resilience, scalability, and disaster recovery capabilities Contribute to capacity planning and performance optimisation as the platform scales Establish and champion SRE best practices across the wider engineering function What We're Looking For Proven commercial ...

Senior AI/ML Engineer

Hiring Organisation
Argus Media group
Location
London, UK
Employment Type
Full-time
/CD pipelines. Proven ability to partner with and work across teams to drive delivery into production. Strong problem-solving, debugging, and performance optimisation skills. Solid software engineering foundations, including version control, automated testing, and monitoring. DesirableExperience building or productionising agentic AI systems—tool use, orchestration, multi-step … LangGraph, LangChain, CrewAI, AutoGen, or similar).Experience with GenAI/LLM systems in a production context (RAG, prompt orchestration, evaluation, guardrails, cost/latency optimisation).Exposure to MCP (Model Context Protocol) and tool-based/function-calling architectures. Experience deploying and operating machine learning models/MLOps pipelines (e.g. ...

Senior Software Developer

Hiring Organisation
Spectrum IT Recruitment
Location
London, UK
Employment Type
Full-time
that support real-world trading strategies. As a senior member of the team, you will contribute both technically and strategically, helping shape development standards, performance optimisation, and system scalability. You will primarily work within a C#/.NET/SQL Server/ASP.NET ecosystem, developing high-performance, reliable, and maintainable applications. Key ResponsibilitiesDesign, develop, and maintain high-performance applications in C# and .NETLead architectural discussions and contribute to technical directionBuild scalable, reliable systems to support automated trading and researchDevelop and optimise database solutions (SQL Server or equivalent)Improve performance, reliability, and automation across systemsMentor ...

Senior Machine Learning Engineer (Maternity Leave Cover)

Location
Greater London, England, United Kingdom
your core work is designing, training, evaluating, and productionising machine learning models on complex, multi-source datasets from local authorities. You will engineer high-performance training pipelines, build embedding-based and sequence models, implement LLM and RAG workflows, and develop containerised model services that integrate directly into the OneView … platform. This includes hands-on work with model architectures, feature engineering, model optimisation, performance debugging, schema-aligned data preparation, and ML-driven interfaces. This is a role for engineers who want to build real models, ship real systems, and solve real operational ML problems - not just prototypes. ...

Software Engineer – Ads & Commercial Development

Location
Greater London, England, United Kingdom
skilled JavaScript/TypeScript Engineer to join our Ads and Commercial Development team. In this role, you will build and optimize the high-performance, low-latency infrastructure that powers our commercial platforms. Unlike standard full-stack or frontend roles that rely heavily on heavy UI frameworks, this position focuses … bidding, ad servers, tracking pixels, and privacy-focused sandbox APIs. Modern Web Standards: Strong grasp of security protocols (CORS, CSPs), cookie policies, and web performance metrics (Core Web Vitals). About You Essential Skills: Languages: Expert-level mastery of TypeScript and vanilla JavaScript (ES6+) . Runtime Environments: Strong proficiency ...

AI/ML Engineer

Location
Greater London, England, United Kingdom
/CD pipelines. Proven ability to partner with and work across teams to drive delivery into production. Strong problem‐solving, debugging, and performance optimisation skills. Solid software engineering foundations, including version control, automated testing, and monitoring. Experience building or productionising agentic AI systems—tool use, orchestration, multi‐step … LangChain, CrewAI, AutoGen, or similar). Experience with GenAI/LLM systems in a production context (RAG, prompt orchestration, evaluation, guardrails, cost/latency optimisation). Exposure to MCP (Model Context Protocol) and tool‐based/function‐calling architectures. Experience deploying and operating machine learning models/MLOps pipelines ...