1 to 25 of 36 Performance Optimisation Jobs in the City of London

Lead Business Intelligence Analyst

Hiring Organisation
Harnham
Location
City of London, London, United Kingdom
within their sector and a growing commitment to data-driven decision making. Data sits at the heart of their strategy, supporting product development, commercial performance, and operational effectiveness. With a collaborative data team and investment in modern analytics platforms, they are building a scalable, governed, and future-focused data … frameworks, and reporting standards Acting as the escalation point for complex BI and reporting challenges Partnering with data engineering teams on architecture, modelling, and performance optimisation Contributing to a major cloud migration programme and helping modernise the wider analytics ecosystem Your Skills & Experience Strong commercial experience with Tableau ...

Senior Software Engineer (Java)

Location
City Of London, England, United Kingdom
optimising mission‐critical trading services across multiple asset classes. Role Responsibilities Design and implement distributed, fault‐tolerant Java services for electronic trading environments Lead performance tuning, optimisation, and refactoring of low‐latency trading components Investigate and resolve production issues, ensuring system stability and high availability Collaborate with global … Architecture, DevOps, and Product Mentor and guide engineers to improve technical capability and engineering standards Experience/Competences Strong experience designing and building high‐performance, low‐latency Java services within electronic trading Strong experience with distributed messaging technologies (Solace/Kafka) and real‐time systems Strong experience designing ...

Senior Software Developer

Hiring Organisation
Spectrum IT Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£120000 - £150000/annum
direction of the systems they build. You will work on a combination of greenfield development and the continuous improvement of established platforms, building high-performance, reliable and scalable applications that directly support real-world trading strategies and quantitative research. As a senior member of the engineering team, you will … have the opportunity to influence technical architecture, development standards, performance optimisation and engineering best practices, while working closely with researchers, traders and other technical specialists. Key Responsibilities Design, develop and maintain high-performance applications using C# and modern .NET Take ownership of significant software development projects from ...

Machine Learning Engineer

Hiring Organisation
RedTech Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
beneficial but is not essential. Experience in any of the following would be beneficial: LangChain and/or LangGraph Python memory management and performance optimisation GPU optimisation and acceleration PyTorch ONNX/ONNX Runtime Model inference and acceleration Responsibilities for Machine Learning Engineer: Develop and maintain high … prototyping and experimentation through to production implementation Optimise machine learning models and Python software for speed, scale, runtime and memory usage Help improve the performance and scalability of existing AI systems Develop innovative new features using machine learning and AI technologies Explore new technologies and approaches to solve complex ...

Azure Cloud FullStack

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £520/day
mind, particularly around Azure A collaborative, problem-solving mindset-comfortable investigating and fixing issues as they arise Additional information: Nice to have: experience with performance optimisation and troubleshooting performance bottlenecks If you're excited by full-stack Azure development, want to contribute to healthcare technology, and enjoy ...

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 ...

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 ...

MLOps Engineer

Location
City Of London, England, United Kingdom
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 #J ...

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 ...

Senior Salesforce Developer

Hiring Organisation
Focus on SAP
Location
City of London, London, United Kingdom
Visualforce, SOQL/SOSL, triggers, controllers and Salesforce platform technologies . Design reusable development frameworks and components, ensuring high standards across code quality, performance, testing and maintainability . Implement complex Salesforce configuration, automation, workflows, approvals, validation rules and security controls . Agentforce, AI & Data Cloud Design and develop Salesforce … leadership across Salesforce programmes, contributing to solution design, development standards, code reviews and engineering best practices . Drive continuous improvement across development, automation, platform performance and technical delivery. Key Skills: Extensive hands-on experience delivering enterprise Salesforce solutions , with strong development expertise across Apex, Lightning Web Components (LWC), Visualforce ...

Developer

Location
City Of London, England, United Kingdom
values, with close attention to point in time integrity (as of date versioning, no look ahead bias, clean handling of revisions). Automation and optimisation: automate data workflows and build in data quality checks so parsing failures, gaps or stale data are caught before they reach research. Documentation … time to time Technical Requirements: Proven experience with Python, especially Pandas and NumPy Mastery of SQL and PostgreSQL: schema design, complex queries, indexing and performance optimisation, beyond basic querying Experience with pipeline orchestration and scheduling Proven ability to deliver reliable, tested scripts against a written specification ...

Senior Salesforce Developer

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£80,000
classes, controllers, triggers, Visualforce and web services. Experience developing Salesforce integrations using REST and SOAP APIs. Strong knowledge of SOQL, SOSL, dynamic queries and performance optimisation. Experience writing unit tests and applying code quality and coverage best practices. Knowledge of asynchronous Apex, including Batch Apex, Queueable Apex and Future ...

Senior Front Office Developer - Trading

Hiring Organisation
CMC Markets UK Plc
Location
City of London, London, United Kingdom
Employment Type
Permanent
Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing & Risk, working on our high-performance, high-frequency trading platform. This is a hands-on role at the core of our market-making technology stack, where nanoseconds matter and engineering excellence … critical. You will design and build ultra-low latency pricing and risk systems that directly power our global trading operations. If you thrive in performance critical environments and want your work to have real market impact, we would love to hear from you. Please note that this ...

Adobe Experience Manager

Location
City Of London, England, United Kingdom
Experience with Adobe Assets, Adobe Marketo , and familiarity with Adobe Analytics and Adobe Target (advantageous). Strong understanding of web application security, scalability, and performance optimization . Experience migrating legacy content into AEM, including scripting and automating content workflows. Familiarity with Adobe I/O , GraphQL , and Content Fragment ...

Salesforce Integration Developer

Hiring Organisation
Focus on SAP
Location
City of London, London, United Kingdom
SOAP APIs, Platform Events and modern integration patterns . Working closely with Architects, Developers and business stakeholders, you will deliver secure, scalable and high-performance integrations , supporting wider Salesforce transformation and Agentforce/Agentic AI initiatives. Key Responsibilities: Salesforce Integration & Development Design and develop complex integrations between Salesforce … Work across Salesforce DX, CI/CD, automated testing, version control and deployment , ensuring high-quality and maintainable solutions. Troubleshoot complex integration, application and performance issues across the Salesforce landscape. Key Skills: Extensive hands-on experience designing and delivering enterprise Salesforce integrations , with strong expertise across REST/SOAP ...

Staff Python Engineer (ML)

Location
City Of London, England, United Kingdom
including speccing, architecture, development, testing, deployment, release and monitoring Strong skills in building maintainable tests, observability and tracing systems. Knowledge of best practices for performance optimisation, memory management. Familiarity with Kubernetes , Docker and other cloud infrastructure, ops and containerised tools. Strong analytical and troubleshooting skills – methodically decomposing systems ...

Cloud Transformation Architect

Location
City Of London, England, United Kingdom
migration and re-platforming of legacy or monolithic applications to microservices-based architectures . Define and implement cloud-native designs , ensuring scalability, security, and performance optimization. Collaborate with enterprise and solution architects to define modernization roadmaps and deployment strategies . Provide technical direction during cloud transformation engagements , including assessment ...

Desktop Application Analysis and Packaging - MSI/MSIX, App-V

Hiring Organisation
Hays Technology
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £750/day 650-750
Windows 365 and Azure Virtual Desktop (AVD) platforms Strong knowledge of application packaging , deployment, and lifecycle management technologies Experience in client application troubleshooting and performance optimisation Good understanding of authentication and identity management technologies, including Active Directory and Microsoft Entra ID Effective collaborator with strong communication and stakeholder ...

Desktop Application Analysis and Packaging SME

Hiring Organisation
Hays Technology
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £750/day 650-750
Windows 365 and Azure Virtual Desktop (AVD) platforms Strong knowledge of application packaging, deployment, and lifecycle management technologies Experience in client application troubleshooting and performance optimisation Good understanding of authentication and identity management technologies, including Active Directory and Microsoft Entra ID Effective collaborator with strong communication and stakeholder ...

Solutions Architect

Location
City Of London, England, United Kingdom
translate requirements into effective solutions. Define functional and non-functional requirements. Break requirements into manageable development features. Champion code quality, BDD, unit testing and performance optimisation. Support technical demonstrations, proposals and pre-sales activities. What We’re Looking For Strong Solution Architecture background with 10+ years in enterprise software ...

The Core Engineering - Software Engineer - Analyst / Associate - London

Location
City Of London, England, United Kingdom
statistics, time series analysis and numerical algorithms. Experience with programming in Python and SQL for extract transform load (ETL) operations and data analysis (including performance optimization). Experience in using languages such as R, Java, C++ is beneficial. Experience in developing data visualization and business intelligence solutions using tools ...

Lead BI Analyst - Tableau

Hiring Organisation
Harnham
Location
City of London, London, United Kingdom
will act as the technical authority for Tableau and take ownership of BI standards across the organisation. You will focus on improving the scalability, performance, and governance of the existing BI environment while supporting a major cloud migration programme. Key responsibilities include: Leading end-to-end Tableau development across … Desktop, Prep, and Cloud Defining and enforcing best practice for dashboard design, data modelling, and performance optimisation Owning BI governance frameworks, including data quality and reporting standards Supporting and enabling business users to develop self-service analytics capability Writing and optimising complex SQL across cloud and on-premise ...

Product Engineer (Backend)

Location
City Of London, England, United Kingdom
evolution and scaling of our backend infrastructure Design and implement performant APIs and services Build infrastructure to support cutting‐edge AI capabilities Optimise database performance and query efficiency Continuously improve reliability and observability through enhanced monitoring and alerting Collaborate cross-functionally to ensure our infrastructure supports continuous product innovation … using Terraform) Deep knowledge of relational databases (we use PostgreSQL) Familiarity with serverless architectures (we love lambdas!) Solid understanding of security best practices and performance optimisation As a person, you... Are first and foremost abuilder Are excited towork in-personfrom our office in London (most of the time ...

Sr. Full Stack Developer

Location
City Of London, England, United Kingdom
cross-functional teams, including QA engineers, product managers, and designers, to deliver high-quality software products. Participate in requirements analysis and solution design discussions Performance Optimization: Identify and address performance bottlenecks in applications. Optimize code for speed, scalability, and efficiency Documentation: Create and maintain technical documentation, including design ...

Database Developer - Legal and General

Location
City Of London, England, United Kingdom
Science or a related discipline Strong SQL development skills, including experience creating efficient stored procedures, functions and views Knowledge of database design principles and performance optimisation techniques Experience working with Python and a willingness to further develop technical skills across modern technologies Understanding of concepts such as windo... ...