24 of 24 Permanent Performance Optimisation Jobs in Central London

L3 Network Engineer

Hiring Organisation
Claranet
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
support, configuration management, and lifecycle maintenance across the network estate for financial services clients. The role focuses on complex incident resolution, change execution, and performance optimisation for SDWAN, WAN, LAN/WLAN, VPN/SASE, and load-balancing environments, ensuring all activities meet stringent regulatory, security, and compliance … audit trails Support onboarding of new sites/services using Zero-Touch Provisioning (ZTP) and Infrastructure-as-Code pipelines Manage routing policies, QoS, wireless performance tuning, and load balancer configuration updates Collaborate with vendor management teams on escalated transport or device issues, ensuring regulatory requirements are met Financial Services ...

L3 Network Engineer

Hiring Organisation
Claranet
Location
Camden, Greater London, Covent Garden, United Kingdom
Employment Type
Permanent
support, configuration management, and lifecycle maintenance across the network estate for financial services clients. The role focuses on complex incident resolution, change execution, and performance optimisation for SDWAN, WAN, LAN/WLAN, VPN/SASE, and load-balancing environments, ensuring all activities meet stringent regulatory, security, and compliance … audit trails Support onboarding of new sites/services using Zero-Touch Provisioning (ZTP) and Infrastructure-as-Code pipelines Manage routing policies, QoS, wireless performance tuning, and load balancer configuration updates Collaborate with vendor management teams on escalated transport or device issues, ensuring regulatory requirements are met Financial Services ...

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 Developer

Hiring Organisation
Spectrum It Recruitment Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
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 ...

SAP Technical Architect

Hiring Organisation
Focus on SAP
Location
City of London, London, United Kingdom
projects that demand innovation, collaboration, and thought leadership . Role – We are seeking an experienced SAP Technical Architect to lead the design, governance, and optimisation of enterprise SAP landscapes across a large-scale SAP transformation programme. This is a senior architecture role responsible for defining technical strategy, ensuring platform … scalability, security, and performance, and driving the successful delivery of SAP solutions across S/4HANA, SAP BTP, integration platforms, and enterprise applications. Working closely with business stakeholders, solution architects, Basis teams, developers, and integration specialists, you will provide technical leadership across the full SAP ecosystem while ensuring alignment ...

Manager - Lead AI Engineer

Hiring Organisation
KPMG UK
Location
City of London, London, United Kingdom
data integration workflows. Operational Excellence: Contribute to defining reusable development patterns, enforcing coding standards, and implementing MLOps best practices that support version control, performance optimisation, and maintainability. Cross-Disciplinary Collaboration: Work side-by-side with data scientists, product managers, platform engineers, and QA teams to align on technical ...

Salesforce Senior Dev/Tech Lead

Hiring Organisation
Tata Consultancy Services
Location
City of London, London, 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 Data Architect

Hiring Organisation
Gravitas Recruitment Group (Global) Ltd
Location
City of London, London, United Kingdom
audiences (pre-sales experience is essential). Translate business requirements into target-state data models, ingestion patterns, and semantic layers. Guide engineers on implementation, performance optimisation, cost control, CI/CD, and operational readiness. Ensure compliance with data governance, privacy, and security controls (RBAC, encryption, auditing, lineage). ...

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 ...

Senior Software Developer

Hiring Organisation
Spectrum IT Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£100000 - £120000/annum
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 ecosystem, developing high-performance, reliable, and maintainable applications. … 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, and automation across systems Mentor junior ...

Senior Analytics Engineer

Hiring Organisation
Tenth Revolution Group
Location
City of London, London, United Kingdom
into technical solutions. Develop and maintain Looker models, explores, and dashboards. Implement data quality controls, testing frameworks, and monitoring processes. Optimise data pipelines, warehouse performance, and reporting layers. Collaborate with engineering teams to ensure source data supports downstream requirements. Manage delivery blockers and communicate progress to stakeholders. Support adoption … data and automation technologies. Essential Skills & Experience 6+ years' experience in Analytics Engineering, Data Engineering, BI Engineering, or similar. Advanced SQL skills with strong optimisation and troubleshooting experience. Strong understanding of data warehousing and data modelling principles. Experience designing and maintaining end-to-end data pipelines. Hands-on experience ...

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 ...

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 ...

Systems & Cloud Engineer

Hiring Organisation
Larbey Evans
Location
City Of London, England, United Kingdom
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 ...

Senior Software Engineer

Hiring Organisation
Apex Systems
Location
City of London, London, United Kingdom
proficiency (command-line tools, shell scripting) Preferred Qualifications Experience with high-throughput, low-latency systems at scale Advanced coding skills including concurrency, profiling, and performance optimisation Experience with CI/CD pipelines and deployment automation Experience with security at the network edge (DDoS protection, authentication protocols, TLS termination ...

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 ...

Senior Software Engineer – Data Visualisation & Graphics | London

Hiring Organisation
techstack Recruitment
Location
City of London, London, United Kingdom
dashboard-building role. You’ll be working on the underlying systems that make complex visualisations fast, accurate, and scalable. The challenges range from rendering performance and interaction design through to algorithms, graphics, API design, and numerical correctness. What you’ll be doing Designing and building core charting features used … developers around the world Working across rendering, interaction, animation, and visualisation infrastructure Solving performance-critical problems involving Canvas, SVG, and large datasets Improving correctness, precision, and usability across a sophisticated charting platform Designing APIs that are elegant, flexible, and easy for developers to adopt Taking features from initial concept ...

Backend Developer Golang Node Pub / Sub

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 have experience with Pub/Sub messaging You enjoy solving complex technical challenges and delivering high ...

BMS & OT Systems Eningeer

Hiring Organisation
RG Setsquare
Location
City of London, London, St Paul's, United Kingdom
Employment Type
Permanent
Salary
£85000 - £90000/annum Bonus + pension
built in. What you'll be doing: Acting as engineering lead for BMS/OT platform health across a multi-site portfolio Fault diagnosis, performance optimisation and lifecycle work (upgrades, controller refresh, server/workstation replacement) Commissioning, tuning and validating control strategies and alarms Owning OT/ ...

Lead Azure Data Engineering Architect

Hiring Organisation
Fractal
Location
City of London, London, United Kingdom
services (Blob Storage, Data Lake, Synapse Analytics, Databricks). Integrate serverless components such as Azure Functions for automation and orchestration. Ensure system monitoring and performance optimization using Azure Monitor and Grafana. Collaborate with cross-functional teams to define data architecture standards and best practices. Requirements: Proven experience in data … data solutions. Proficiency in Azure ecosystem: Blob Storage, Data Lake, Synapse Analytics, Databricks, Functions, and Monitor. Strong understanding of data modeling, migration strategies, and performance tuning. Familiarity with monitoring tools such as Grafana for system health and analytics. Excellent problem-solving skills and ability to lead technical teams ...

Senior Solution Architect

Hiring Organisation
I3 Resourcing Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Collaborate with business and change teams to define target operating models and develop business cases for technology initiatives. Support requirements gathering and business process optimisation, maximising the use of core platforms while minimising unnecessary custom development. Champion architecture governance, design patterns and technology standards. Promote Agile delivery and DevSecOps … practices throughout the software development lifecycle. Work closely with technical leads and development teams to review designs, provide architectural guidance, support code quality and performance optimisation. Identify technical risks and define appropriate mitigation strategies. Evaluate emerging technologies and industry trends to recommend innovative, cost-effective solutions. Produce high-quality ...

Frontend Architect - React

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
Latency) Role Overview- We are seeking a highly skilled UI Developer with strong expertise in building time-critical, high-availability, and high-performance applications. The ideal candidate will have hands-on experience across the full UI development lifecycle, including design, development, testing, and deployment. Technical Skills & Expertise- Frontend Technologies … Have): Exposure to frameworks like Playwright or Cypress Desired Experience Experience working on financial services or trading platforms is an advantage Strong understanding of performance optimization and low-latency UI applications Experience with highly available, mission-critical systems. ...

Senior Machine Learning Scientist (Single Cell)

Hiring Organisation
Relation
Location
City of London, London, United Kingdom
depth in at least one area relevant to modelling structured, high-dimensional data. Excellence in Python and familiarity with scalable ML tooling and high-performance computing. Strong engineering practice: confidence implementing models from scratch, comfortable with distributed training, profiling, and performance optimisation. Demonstrable experience training models at scale ...