1 to 25 of 31 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 ...

Azure Databricks Data Engineer

Location
City Of London, England, United Kingdom
data delivery across multiple business functions. Develop and support Lakeflow pipelines, Delta Lake implementations, and modern data engineering frameworks. Drive best practices across performance optimisation, security, governance, monitoring, and platform reliability. Collaborate with business, data, and technology teams to deliver high-quality data products that support organisational growth … Factory, ADLS, Key Vault, and other Azure services. Hands-on experience with Git, CI/CD pipelines, deployment automation, and production support. Strong troubleshooting, performance tuning, and optimisation experience across Databricks and SQL environments. Excellent stakeholder engagement and communication skills, with the ability to operate effectively across both ...

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 Engineer - LMEsmart

Location
City Of London, England, United Kingdom
role is to engineer resilient Inter-Office integrations and workflows that automate recovery, streamline price-band governance, and surface real-time matching performance—reducing manual effort, improving compliance, and strengthening Inter-Office market oversight. Develop the automation of test tooling and framework development for the Inter-Office Trading platform … Required Knowledge and Level of Experience: Degree in Computer Science, IT or related disciplines. 5+ years’ experience in software development with Java (JVM), including performance optimisation and profiling. Deep understanding of cloud infrastructures, usage patterns, across at least one major cloud vendor. Knowledge of off-heap data structures ...

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

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

Location
City Of London, England, 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 ...

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 ...

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 ...

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 ...

SAP Technical Architect

Hiring Organisation
Focus on SAP
Location
City of London, London, United Kingdom
/4HANA, ECC, BTP, HANA, Basis and Fiori/UI5 . Design scalable SAP landscapes across DEV, QAS, PRD and Disaster Recovery , covering sizing, performance, availability and resilience. Provide technical leadership across ABAP, Fiori/UI5, OData, CDS Views, SAP Basis and development teams . Lead technical impact assessments … architecture reviews and performance optimisation across complex SAP environments. Integration & BTP Architecture Define end-to-end integration architecture across SAP and non-SAP platforms using SAP BTP Integration Suite (CPI), SAP PI/PO, REST/SOAP APIs, OData, IDocs and RFCs . Establish scalable ...

Senior Front-End Engineer

Location
City Of London, England, United Kingdom
Next.js Proven experience building and shipping consumer-facing products Strong communication skills and ability to collaborate effectively with cross-functional teams Understanding of performance optimization techniques for modern web applications Competitive salary and an equity sign-on bonus Biannual bonus scheme Fully expensed tech to match your needs Paid ...

Software Developer

Hiring Organisation
Sanderson Government and Defence
Location
City of London, London, United Kingdom
Employment Type
Part Time
Salary
Up to £525 per day + Inside IR35
with Node.js , Microsoft Azure , Azure Functions , Cosmos DB , and GitHub within modern DevOps and Agile delivery environments. Key Responsibilities Design, develop, and maintain high-performance backend applications using Node.js . Build and deploy scalable cloud-native solutions within the Microsoft Azure ecosystem. Develop and manage Azure Functions to support … . Collaborate with cross-functional teams to define technical requirements and deliver robust solutions. Implement best practices for code quality, testing, security, and performance optimisation. Manage source control, branching strategies, and CI/CD pipelines using GitHub . Troubleshoot and resolve application issues, ensuring high levels of availability ...

Backend Software Engineer - Distributed Systems

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
platform that underpins the company's real-time infrastructure. Working on highly scalable distributed systems, you'll design and build new platform capabilities, improve performance and reliability and solve complex engineering problems at scale. You'll contribute across low latency messaging, Pub/Sub services, state synchronisation and next … modern server-side language You have experience building or operating distributed systems, messaging platforms, event-driven architectures or streaming technologies You understand scalability, concurrency, performance optimisation and fault tolerant system design You enjoy solving complex technical challenges and delivering high quality, production ready software You're comfortable working ...

Global Banking Markets - Software Engineer - Equities Data Platform Engineering - London - Vice President

Location
City Of London, England, United Kingdom
ground‐up rebuild of our Electronic Trading data infrastructure into a cloud‐native, AI‐first platform. Design, build, and maintain a high‐performance, high‐availability, high‐capacity platform that processes and persists massive volumes of business‐critical data in near real time, distributing it seamlessly to downstream Electronic Trading … raise the bar on engineering practices across the team. Required Qualifications & Skill‐Sets Around 5–10 years of professional experience with experience building high‐performance, low‐latency systems (sub‐second) – at Vice President level. Proven ability to drive complex, industrial‐scale development independently, while also leading and developing engineers ...