1 to 25 of 60 Performance Optimisation Jobs in London

Mid Level C# Full Stack Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £100,000 per annum
This role offers the chance to deepen your expertise in C# and .NET within a highly technical team working on complex, performance-led systems. You will take on greater ownership while continuing to grow in a collaborative environment. The Company They are a growing, data-focused organisation with … Develop and enhance C# .NET applications across multiple systems * Work on both greenfield projects and improvements to existing platforms * Contribute to system design and performance optimisation * Collaborate with cross-functional teams to deliver technical solutions * Support and mentor more junior engineers where appropriate Your Skills & Experience * Strong commercial ...

Platform Engineer - Snowflake

Hiring Organisation
Robert Walters
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 100,000 - 115,000 Annual
Analytics Engineering team and take ownership of our Snowflake data platform. This is a hands-on role focused on platform administration, security, access management, performance optimisation, and governance. You will act as the Snowflake subject matter expert, ensuring the platform remains secure, scalable, cost-effective, and available … teams, you will play a key role in shaping and evolving our modern data platform. What You'll Do Own the administration, security, and optimisation of the Snowflake platform. Manage access controls, governance, and compliance across the data estate. Monitor platform performance, reliability, and cost efficiency. Deliver platform ...

Senior Developer

Hiring Organisation
Initialize
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 per annum
Azure OpenAI, AI Search, agents and RAG patterns. Strong practical knowledge of databases, including SQL and NoSQL platforms, schema design, data access patterns, query performance and secure data handling. Ability to design, build and review maintainable code while following agreed coding standards, architectural guidelines and secure development practices. Strong … excellent understanding of the development fundamentals - version control (Git), SDLC, agile methodologies, testing, debugging, code review, CI/CD, RESTful APIs, databases, query optimisation, operating systems, networking, security best practice, authentication and authorisation, encryption, cloud computing, containerisation, orchestration, infrastructure as code, monitoring, logging, performance optimisation, scalability ...

NetSuite Technical Lead - Remote working

Hiring Organisation
Communicate Recruitment Solutions LTD
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £80,000 per annum
NetSuite ERP environment. This role acts as the technical bridge between business requirements and system execution, ensuring scalable architecture, seamless integrations, and high system performance across NetSuite and connected platforms such as Workday and other enterprise systems. This is a permanent role and remote working will be available. … blueprints Reporting & Analytics Develop and maintain advanced Saved Searches, SuiteAnalytics workbooks, and financial reports Support data extraction, transformation, and reporting requirements across teams Troubleshooting & Optimisation Diagnose and resolve script errors, integration issues, and system performance bottlenecks Lead performance optimisation initiatives, including refactoring legacy scripts and improving ...

Senior Developer

Hiring Organisation
Reed.co.uk
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 per annum
code reviews, architecture discussions, and system design decisions. Troubleshoot and resolve complex technical issues across the full stack. Ensure software security, scalability, and performance are maintained at all times. Keep abreast of emerging technologies and industry trends to inform strategic decisions. Skills and Experience Minimum 8 years of commercial … orchestration tools such as Docker and Kubernetes. Familiarity with event-driven architecture and message brokers (e.g., Kafka, RabbitMQ). Knowledge of front-end performance optimisation and accessibility standards. Exposure to machine learning pipelines or data engineering workflows. Prior experience working in startup environments or high-growth technology companies. ...

Knowledge Graph Architect

Hiring Organisation
Thebes IT Solutions Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
semantic ontology and taxonomy experience particularly using tools (Protege and Graphview) Hands-on Neo4j or equivalent graph database capability including Cypher query design and optimisation Experience building ETL/ELT pipelines that feed structured data into graph platforms Understanding of how knowledge graphs integrate with RAG and LLM architectures … alongside knowledge graph platforms Knowledge of graph governance, schema versioning and operational monitoring at scale Scope and Boundary: The Context: Thebes Group is an optimisation company specialising in AI-enabled transformation. We help organisations improve workflow, reporting, information management, and operational decision-making by combining process optimisation, knowledge ...

Manager - Lead AI Engineer

Hiring Organisation
Anson Mccade
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
Generative AI tooling Owning the implementation of ML pipelines, APIs and data integration workflows Enforcing MLOps best practices, coding standards, version control and performance optimisation Collaborating cross-functionally with data scientists, product managers, platform engineers, QA and audit professionals Mentoring junior engineers and contributing to internal capability-building ...

Trainee Cloud Computing | No experience needed

Hiring Organisation
Qualify Nation Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£28,000 - £40,000 per annum
strategies Serverless Computing Event-driven architecture Serverless application deployment Cloud-native solutions DevOps Practices Continuous Integration (CI) Continuous Deployment (CD) Infrastructure automation Monitoring and performance optimisation Hands-On Practical Training Learning cloud computing requires practical experience. Throughout the programme, you will complete practical exercises and cloud-based labs ...

Senior Software Developer

Hiring Organisation
Spectrum It Recruitment Limited
Location
London, United Kingdom
Employment Type
Permanent
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 Responsibilities Design, develop, and maintain high-performance applications in C# and .NET Lead architectural discussions and contribute to technical direction Build scalable, reliable systems to support automated trading and research Develop and optimise database solutions (SQL Server or equivalent) Improve performance, reliability ...

Business Intelligence Engineer (AWS / AI Exposure)

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500 per day
support and new capability development Collaborate with cross-functional teams on AI initiatives and roadmap delivery Apply best practices for data quality, governance, and performance optimisation Core Technical Skills Strong hands-on experience with: AWS data stack (Glue, S3, Lambda, Redshift, Athena) Advanced SQL Python for data processing ...

AI Platform Engineer (DevOps / MLOps Focus)

Hiring Organisation
The Portfolio Group
Location
London, United Kingdom
Employment Type
Permanent
Salary
£80000/annum
role is about engineering, not research. You will architect and run the infrastructure that enables AI to perform securely, reliably and at scale ensuring performance, cost control and operational maturity as adoption grows. You'll work closely with AI engineers, security teams, and product stakeholders to transform experimental models … Doing Design and optimise scalable RAG pipelines and vector search systems Orchestrate multi-model AI services with a focus on latency, resilience and performance Productionise GenAI workflows and ensure they operate reliably under real usage Build and run AI services across AWS and Databricks Develop ingestion, embedding and retrieval ...

Principal Engineer - Comms Surveillance

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
leader within the Surveillance Technology team. Provide expert oversight across analysis, architecture, design and delivery of complex systems. Architect, build, and evolve scalable, high‐performance solutions for Communications Surveillance and Record Keeping. Lead engineering standards: architecture reviews, vendor assessments, impact analysis, and automated testing. Mentor and develop engineering talent … Record Keeping. Translate complex technical concepts for both technical and non‐technical stakeholders. Support agile planning, estimation and prioritisation. Identify opportunities for system optimisation, refactoring, and alignment to target architectures. Manage technical risks, issues and dependencies. Benchmark against peer organisations to ensure alignment with regulatory and industry expectations. Experience ...

BI Engineer

Hiring Organisation
Circle Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £530 per day
support and new capability development * Collaborate with wider teams on AI-related initiatives and roadmap delivery * Apply best practices around data quality, governance and performance optimisation * AWS Data Engineering stack (e.g. Glue, S3, Lambda, Redshift, Athena) * SQL (advanced level) * Python (for data processing and pipeline development) * Infrastructure/ ...

Full Stack Developer

Hiring Organisation
Robert Half
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
design and development across the platform. Design, develop, and maintain both front-end user interfaces and back-end services, APIs, and databases. Monitor platform performance and operational metrics, identifying, investigating, and resolving issues as they arise. Collaborate closely with business stakeholders to understand opportunities to improve user and seller … backend development. Bachelor's or Master's degree in Computer Science, Engineering, or a related discipline. Strong understanding of database design, data modelling, and optimisation, particularly using SQL. Hands-on experience working with Google Cloud Platform (GCP) services. Experience monitoring production systems, triaging issues, and distinguishing between critical incidents ...

Senior Snowflake Consultants - SnowPro Advanced Certified

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Extensive hands‐on experience designing, building, and optimising Snowflake solutions Strong understanding of data warehousing, data modelling, ETL/ELT, governance, security, and performance optimisation Experience working with AWS, Azure, or GCP environments Excellent stakeholder engagement and communication skills Ability to work independently within fast‐paced consulting ...

Senior Java Developer

Hiring Organisation
mthree
Location
Bromley, Greater London, Bromley Town, United Kingdom
Employment Type
Permanent
major digital transformation across its capital markets technology estate. You'll play a key role in scaling a mission-critical platform, driving architecture, performance optimisation, automation, and engineering best practice. Strong Java and distributed systems experience required. Exposure to AI, LLMs, Hadoop, Elasticsearch or Oracle would be advantageous. ...

Systems & Cloud Engineer

Hiring Organisation
Larbey Evans
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
leadership, escalation support, and operational oversight for core enterprise infrastructure, including VMware, Windows Server, Active Directory, DNS, and DHCP Drive infrastructure design, capacity planning, performance optimisation, root cause analysis, and continuous service improvement Participate in an on-call rota and collaborate across teams to maintain service availability ...

Technical Product & Platform Manager

Hiring Organisation
Unsworth
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
full software development lifecycle, leading UK and offshore teams to deliver high-quality outcomes Ensure strong engineering standards, minimising technical debt and optimising platform performance Own backlog prioritisation and delivery focus, ensuring alignment to business-critical objectives Work with development teams to define requirements, user stories, and acceptance criteria … using Agile methodologies Monitor delivery progress, performance, and key metrics to drive continuous improvement Stakeholder & Customer Engagement Communicate progress, risks, and updates to stakeholders and senior management Act as a bridge between technical teams and the wider business to ensure aligned delivery Support Sales and business development by articulating ...

Technical Product & Platform Manager

Hiring Organisation
UNSWORTH
Location
East London, London, United Kingdom
Employment Type
Permanent, Work From Home
full software development lifecycle, leading UK and offshore teams to deliver high-quality outcomes Ensure strong engineering standards, minimising technical debt and optimising platform performance Own backlog prioritisation and delivery focus, ensuring alignment to business-critical objectives Work with development teams to define requirements, user stories, and acceptance criteria … using Agile methodologies Monitor delivery progress, performance, and key metrics to drive continuous improvement Stakeholder & Customer Engagement Communicate progress, risks, and updates to stakeholders and senior management Act as a bridge between technical teams and the wider business to ensure aligned delivery Support Sales and business development by articulating ...

Hardware & Embedded Software Engineer

Hiring Organisation
Zenovo
Location
London, United Kingdom
Employment Type
Contract
supporting an innovative technology business developing cutting-edge wearable products that combine hardware, embedded systems, AI, and data analytics to deliver real-time performance coaching. The business has grown from an early-stage concept into a globally recognised technology platform, leveraging large-scale real-world data and intelligent sensing … sensors, and product development. You'll work closely with product, AI, mobile, and data teams to develop wearable electronics that deliver accurate real-time performance feedback in demanding environments. This role is ideal for an engineer who enjoys owning products from concept through to manufacture and wants ...

Salesforce Marketing Cloud Developer

Hiring Organisation
Damia Group Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £700/day Inside IR35
within Audience Builder and Contact Builder Develop and maintain Content Builder assets including emails, landing pages and dynamic content blocks Implement tracking, reporting and performance analytics using Marketing Cloud Intelligence (Datorama) and built-in analytics tools; experience with Marketing Analytics platforms is highly desirable Work with Marketing Cloud Advanced … Salesforce CRM data sync management Understanding of email compliance, GDPR, suppression and consent management requirements Experience with Marketing Cloud reporting, campaign analytics and performance optimisation Desirable Experience with Marketing Cloud Advanced (Personalization/Interaction Studio); real-time personalisation, web and email recommendations, Einstein features Familiarity with Marketing Cloud ...

Application Support Manager

Hiring Organisation
Proactive Appointments
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£475 - £500 per day
continuous improvement of critical business applications, including core banking platforms. This role combines hands-on technical oversight with leadership responsibility, ensuring high availability, performance, and strategic development across application services. You will play a key role in managing both change delivery and BAU support, while driving operational excellence … application support, resolving incidents with a focus on root cause analysis Oversee delivery of projects and enhancements from design through to BAU transition Ensure performance optimisation, system monitoring, and platform stability Collaborate with infrastructure teams on platform performance, backup, and recovery Drive best practices across development, testing ...

Data Engineer

Hiring Organisation
Addition
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 per day
shape the success of complex migration and reconciliation initiatives. This role offers the chance to work within a cloud-first environment, improving data quality, performance, and scalability while supporting critical business outcomes. Role Overview: Location: Remote (Must be UK-based) - no third parties Active SC Clearance is essential Package … Doing: Design, build, and enhance data migration and transformation solutions within AWS. Review existing data engineering solutions and identify opportunities to improve performance, reliability, and scalability. Optimise data processing workflows to increase efficiency across migration and reconciliation activities. Develop robust logging, monitoring, and error-handling capabilities within Python-based ...

SENIOR HPC/COMPUTE ARCHITECT

Hiring Organisation
Crear Group
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Rust library, from initial architecture through production stabilisation and intraday extension. Responsible for architecture, validation strategy, and technical metrics framework. KEY RESPONSIBILITIES - Define the performance optimisation architecture for the computation stack - C++ library and Rust library paths, with architecture diagrams, sequenced delivery plan, and explicit EOD and near … Real Time performance targets - Establish the test and validation strategy: benchmark definitions, regression test suites, acceptance criteria per milestone - Define the technical metrics framework: what constitutes an optimisation gain, how it is measured - Direct C++/Rust Compute Engineers Real Time and intra-day compute batch PoC execution ...

Infrastructure / DevOps Engineer (Senior)

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Temporary
Salary
£500 - £800 per day
security) in line with CISO and GTS requirements . Monitoring, Observability & Reliability Ensure systems are observable and resilient by implementing logging, monitoring, alerting, and performance optimization. Release & Deployment Support Support release processes, ensuring infrastructure readiness and smooth deployment into production environments. Troubleshooting & Incident Support Diagnose and resolve infrastructure-related … issues across environments, working with GTS and engineering teams. Continuous Improvement Identify opportunities to improve automation, reduce manual effort, and optimize infrastructure cost, performance, and reliability. Job Requirements: Bachelor's or Master's degree in Computer Science, IT, or a related field. Strong experience in DevOps, infrastructure engineering ...